ga eS aide i raed : : it ae Sy niet ahh AAA aks thir ee ee Or | 1 i? a ow wey Vibe i Ua irc iM aa Agee ‘ 9p ae rn AN aR itis fe Bi hate i ea i tenia ern tidad WA wad } ih, 1 hea os eh Ba in Tea eae Ratan 3a ? ; hi a ae Av ie utes ae Wea ; Aan ie lan ; Ty ) Os 7 " eo : ae 0 ise a ta ne | Do 17 my, Sern RVers ih Ratt - Phu. ae oe 4 . " MiP. 1 a\an 5, hots a ni m es i) o i = amg ye ma J Ta), ur ys ~y | aoe oe ih A 7 na wie 4 ae oe my, P ey ro - : a, a ii ee | oe) 7 a ye) | ERT 7 ce > Te tae di my LR a: ae : : 7 ea) 7 aul 7 y ‘ m0 yA . Or ae - as Cana ye yak : v Ai Bs wy a : as ; % ; ; ‘hi a i ‘ian \ Gai! oye ih ee i chy; Oo eee . a nt @ ~ i) vie ay § ve : f : - 1 : HN a ein i: 7 a8 : Hl | : im 8 oo an a " : Ne an a q 4 MS _ ; 7 Ri : ; 7 log ee ig Mi PO hat at | ; in og oTy b aie : i Po i . sa) 7 ve i by y : a : i) 6 7 _ en ME Ant : ay Di a | - ' ie +r + -. 7 vt fet te oe | i i) Fi: (meee A ita Ue ath : Tak aa a ren i ei rh 7 7 a a Che é 7 mai. rai e = an _ a = ; 2 7 : by in i mA ‘ a Vi: wi 4 be any here) ane mu i nis ie a ui rin ' a) ral ty ne | i 1 f : 7 a 7 rhe a neve, vel he Anas) Li i rr nF : it i : 7 ’ un act i 7 a + Tae ie : ra a my 7 | J A Al : i A, th ” an a ) _ aa t } a a 7 ae i \ a A MRS MOON Ce rk 7 7 Pee lhe " a A ¥ a Pe + ‘ ey fy sod. Tir ‘yl a 7 , i? TRANSACTIONS OF THE ENTOMOLOGICAL SOCIETY oF LONDON. THE TRANSACTIONS OF THE vi ENTOMOLOGICAL SOCIETY OF LONDON FOR THE YEAR 1871. LONDON: PRINTED FOR THE SOCIETY BY H. G. ROWORTH, 11, RAY STREET, FARRINGDON ROAD, SOLD AT THE SOCIETY’S APARTMENTS, 12, BEDFORD ROW, AND BY LONGMAN, GREEN, READER AND DYER, PATERNOSTER ROW. 1871. LONDON: PRINTED BY H. G. ROWORTH, 11, RAY STREET, E.Ce ENTOMOLOGICAL SOCIETY. COUNCIL FOR 1871. AuFreD R. Wautace, Esq., F.Z.S., &c. . . . . President. J. W. Dunnine, Esq., M.A., F.L.S., F.Z.S., &. EC TES SLAINTON, USQs, Hoh.) &Cs « « « « « | Ys Presidnt, J. O. Westwoop, Esq., M.A., F.L.S., &c. SamvureL Stevens, Esq., F.L.S. Rosert M’Lacuuan, Esq., F.L.8. . Frrpinanp Grout, Esq. . ... . . Treasurer. Secretaries. A. G. Butter, Esq., F.L.S., &e. } AurEx. Fry, Esq., F.L.S. . © Sones (¢ | Peel HIGGINS, HSq:,MERIC:Ss 9% a let Other Members Major F. J. Sipnry Parry, F.L.S., &e. . ; r of Council. Hee ARCO HisGesphiclaSssuuGe ie ie =) fey te Epwarbp SaunpDERS, Esq., F.L.8. . . . . . THE TRANSACTIONS OF THE ENTOMOLOGICAL SOCIETY OF LONDON. 1834-19170" ——— To the Public. To Members. First Series, 5 volumes (1834-1849)......... Price £6 O 0 £410 0 Second Series, 5 volumes (1850-1861)...... 8 0 0 6 0 0 Third Series, 5 volumes (1862-1869)........ TLIO TO 8 5 0 The Transactions for the year 1868......... L070 015 0 % Ay ISGO)ccccsone 12 0 016 6 4 * 1S(Omvccstees i 38! 0 0 9 % IES Ya saononc 15 0 018 9 Volume 5 of the First Series can no longer be obtained separately; the volumes of the First, Second, or Third Series may. Longicornia Malayana may be obtained separately 5 Bee 6 6 6 Go oO oleate 14 © £119 0 Phytophaga Malayana, Pt.1, Apostasicera may be obtained separately . . . . 016 0 0 12° 10 The Journal of Proceedings is bound up with the Transactions, but may be obtained separately, by members gratis, by the public, price One Shilling per Sheet. Members and Subscribers resident more than fifteen miles from London, who have paid the subscription for the current year, are entitled to receive a copy of the Transactions for the year without further payment, and they will be forwarded free, by post, to any address within the United Kingdom. Members and Subscribers resident in or within fifteen miles from Lon- don, are entitled to a copy of the Transactions for the current year at half the price to the public, which copy may be obtained on application to the Librarian. Gay CONTENTS. Explanation of the Plates Errata - List of Members . MEMOIRS. IX. XIII. A Monograph on the Ephemeride. By the Rev. A. E. Eaton, B.A. A F 5 4 5 New Species of Diurnal Lepidoptera from South gia Central America. By W. C. Hewrrson, F.L.S. Descriptions of a new genus, and six new species of Pierine. By A. G. Burumr, F.L.S., &e. : On the dispersal of non-migratory Insects by atmospheric agencies. By Aupert MUuuer, F.R.G.S., &e. Notes on some British species of Oxypoda, with descrip- tions of new species. By Davin Suarp, M.B. Observations on Immature Sexuality and Alternate Gen- eration in Insects. By B. T. Lown, M.R.C.S8., Eng. . On additions to the Atlantic Coleoptera. By T. Vernon Wo taston, M.A., F.L.S. : : k : On a new genus and species of Coleoptera, belonging to the family Lucanide, from the Sandwich Islands. By Cuas. O. WATERHOUSE . C : ; An examination of the arrangement of Macro- ite introduced in England by Mr. Doubleday, and a sug- gestion as to its origin; with some strictures on synonymic Lists. By W. Arnotp Lewis : Descriptions of some new Exotic species of Lucanide. By Prof. J. O. Westwoop, M.A., F.L.S. Descriptions of a new genus, and of two new species of Longicorn Coleoptera. By H. W. Barus, F.Z.S8., &e. Descriptions of three new species of Cicindelide. By H. W. Barus, F.Z.S., &e. . < - . 7 Descriptions of new genera, and of some recently dis- covered species of Australian Phytophaga. By J. 8. Baty, F.L.S. : ; ; : ; : ; vili MEMOIRS (continued) . PAGE. XIV. Descriptions of five new species, and a new genus of Diur- nal Lepidoptera from Shanghai. By A. G. Buruer, F.L.S., &. . . A - : 5 C 401 XV. On some black species of Cantharis with red nedas aa filiform antenne. By Cuas. O. WATERHOUSE . - 405 XVI. Apercu statistique sur les Névroptéres Odonates. Par le Baron E. pe Serys-Lonecuamps, Mem. Hon. Soe. Ent. Lond. . - - : 5 . 409 XVII. On the forms of Fitna Prifolii, with some remarks on the question of specific difference, as opposed to local or phytophagic variation, in that genus. By T. H. Brices, iB 2AN ae S - . 417 XVIII. Remarks concerning the identification of Mipsis for- micaleo, formicarium, and formicalyna of Linné. By R. McLacuuay, F.L.S., Sec. Ent. Soc. . : » 441 Proceedings for 1871 2 ; < : - - i. Index : c : - ; F “ 2 . . lxxvil. EXPLANATION OF THE PLATES. Plates I-VI. . . : Ae . . a . See page 158. Plate VII. . f . 2 A n A 2 See pages 169-173. Plates VIII.-IX. ° : . ° “ = . See page 373. ERRATA. Page 2, line 16, for * 1858-9” read ‘* 1860.” Page 123, line 4, for ‘*fuscus,” read “ fusco.”’ Page 164, line 7, for ‘‘ Centroptilum pheops,”’ read “* Baetis pheops.” Kist of Members OF THE ENTOMOLOGICAL SOCIETY OF LONDON. DECEMBER 31sr, 1871. LIST OF MEMBERS OF THE ENTOMOLOGICAL SOCIETY OF LONDON. ——— Honorary Members, Guérin-Méneyille, F. E., Paris. Hagen, H. A., Cambridge, U.S.A. Leconte, John L., Philadelphia. Milne-Edwards, H., Paris. Pictet, J. C., Geneva. Schiddte, J. C., Copenhagen. Selys-Longchamps, E. de, Liége. Siebold, C. T. E. yon, Munich. Zeller, P. C., Stettin. Zetterstedt, J. W., Lund. ( x1 ) ORDINARY MEMBERS AND SUBSCRIBERS. Marked * are Original Members. Marked + have compounded for their Annual Subscriptions. Marked 8 are Annwal Subscribers. Date of Election. 1866 Adams, Henry, F.L.S., 19, Hanover Villas, Notting Hill, W. 1867 §. Archer, F., 3, Brunswick Street, Liverpool. 1856 Armitage, Edward, A.R.A., 3, Hall Road, St. John’s Wood, N.W. 1857 Atkinson, W. S., M.A., F.L.S., Caleutta. * + Babington, Professor C. C., M.A., F.R.S., &c., Cambridge. 1850 Baly, J. S., F.L.S., The Butts, Warwick. 1865 Barton, Stephen, 32, St. Michael’s Hill, Bristol. 1867 S. Bates, Frederick, 15, Northampton Street, Leicester. 1861 Bates, Henry W., F.L.S., F.Z.S., 40, Bartholomew Rd., N.W. 1851 Beaumont, Alfred, Steps Mills, Huddersfield. 1866 Bicknell, Perey, Beckenham, S.E. 1854 Birt, Jacob, 30, Sussex Gardens, Hyde Park, W. 1864 Blackmore, Trovey, The Hollies, Wandsworth, S.W. 1849 + Bladon, J., Albion House, Pont-y-pool. * Blomefield, Rey. L., M.A., F.U.8., &e., 19, Belmont, Bath. 1841 Bond, Fred., F.Z.S., 203, Adelaide Road, N.W. 1860 Bonyouloir, Vicomte Henri de, 15, Rue de l'Université, Paris. 1865 Borthwick, Richard, Alloa, N.B. * Bowerbank, J. 8., LL.D., F.R.S., &c., 2, East Ascent, St. Leonards. : 1852 + Boyd, Thomas, 17, Clapton Square, N.H. 1867 Boyd, W. C., Cheshunt, Herts. 1856 Braikenridge, Rey. G. W., M.A., F.L.S., Clevedon, Bristol. 1870 Briggs, Thos. Hy., B.A., 6, Old Square, Lincoln’s Inn, W.C. 1849 §. Brown, Edwin, Burton-on-Trent. 1869 §. Brown, N. E., Brighton Road, Red Hill. 1862 Browne, Rev. T. H., M.A., F.G.S., High Wycombe, Bucks. 1855 Burnell, E. H., 32, Bedford Row, W.C. 1868 + Butler, A. G., F.L.S., F.Z.S., 17, Oxford Road, Ealing, W. 1860 Candéze, Dr. E., Glain, Liége. 1865 Carey, A. D., Ahmedabad, India. 1868 Carrington, Charles, Westwood Park, Forest Hill, §.E. 1871 §. Champion, G. C., 274, Walworth Road, S.E. 1871 Charlton, Ernest §., Hesleyside, Bellingham, Hexham. 1867 Clarke, Alex. H., 16, Furnival’s Inn, E.C. 1865 §. Clarke, C. B., M.A., F.L.S., Calcutta. xu Date of Election. 1865 1865 1853 1867 1865 1868 1868 1865 * 1867 1849 1853 1837 1855 1865 * 1867 1867 1871 1849 1865 1865 1869 1865 1858 1865 1869 1870 1869 1855 1865 1857 1865 1855 * 1850 1842 1866 1865 1846 1850 1868 1864 1846 1866 S. LIST OF MEMBERS. Colquhoun, Hugh, M.D., Anchorage, Bothwell, N.B. Cooke, Benj., 119, Stockport Road, Manchester. Cox, Colonel C. J., Fordwich House, Canterbury. Cox, Herbert E., Rosenheim, Reigate. Crotch, G. R., M.A., University Library, Cambridge. Cumming, Linneus, B.A., The College, Cheltenham. Curzon, E. P. R., Brixham House, Brixham. Dallas, W. S., F.L.S., Geological Society, Somerset House, W.C. Darwin, Charles, M.A., F.R.S., &c., Down, Beckenham, S.E. Davies, A. E., Ph. D., F.L.S., &c., Lowesmoor, Worcester. Dawson, John, Carron, Falkirk, Stirlingshire. De Grey and Ripon, Earl, K.G., F.R.S., &¢., 1, Carlton Gardens, 8.W. Devonshire, Duke of, K.G., F.R.S., &c., 78, Piccadilly, W. Dohrn, Dr. C. A., Pres. Ent. Verein, Stettin. Dorville, H., Alphington, Exeter. Doubleday, Henry, Epping. Druce, Herbert, 1, Circus Road, St. John’s Wood, N.W. Duer, Yeend, Cleygate House, Esher. Duncan, Prof. P. M., M.D., F.R.S., &c., Lee, S.E. Dunning, J. W., M.A., F.L.S., F.Z.S., 24, Old Buildings, Lincoln’s Inn, W.C. D’Urban, W.S. M., F.L.S., 4, Queen’s Terrace, Mount Rad- ford, Exeter. Eaton, Rey. A. E., B.A., Andover. Emich, Gustave d’, Pesth. Farren, W., 10, Rose Crescent, Cambridge. Fenning, George, Lloyds, H.C. Fletcher, J. E., Pitmaston Road, St. John’s, Worcester. Foot, A. W., M.D., 21, Lower Pembroke Street, Dublin. Freeland, H. W., M.A., Chichester. French, D. J., F.L.S., &c., Chatham. Fry, Alexander, F.L.8., Thornhill House, Dulwich Wood Park, 8.E. Fust, H. Jenner, jun., M.A., Hill Court, Berkeley. Gloyne, C. P., Jamaica. Godman, F. D., M.A., F.L.S., &c., Park Hatch, Godalming. Gorham, Rey. H.S., St. John’s Vicarage, Enfield. Gould, J., F.R.S., &c., 26, Charlotte Street, Bedford Sq., W.C. Gray, John, Wheatfield House, Bolton, Lancashire. Gray, John Edw., Ph. D., F.R.S., British Museum, W.C. Green, Philip, 11, Finsbury Circus, E.C. Greene, Rev. J., M.A., Apsley Road, Redland, Bristol. Grut, Ferdinand, Secretary, 9, King Street, Southwark, S.E. Guyon, George, Southcliff Cottage, Ventnor. Harold, Baron Edgar von, 52, Barerstrasse, Munich. Harper, P. H., 30, Cambridge Street, Hyde Park Square, W. Hewitson, W. C., F.L.S., F.Z.S., Oatlands, Weybridge. Higgins, E. T., M.R.C.S., 24, Bloomsbury Street, W.C. Date of Election 1869 1869 1859 1865 1864 1870 1869 1843 1869 1853 1865 1861 1865 1842 1861 1868 1865 1868 t LIST OF MEMBERS. xill Holdsworth, Edward, Shanghai. Horne, Charles, Innisfail, Beulah Hill, 8.B. Howitt, Godfrey, M.D., Collins Street East, Melbourne. Hudd, A. E., 10, Burlington Buildings, Redland Park, Bristol. Hume, William H. Jacques, F. V., Chertsey Road, Redland, Bristol. Janson, E. M., Las Lajas, Chontales, Nicaragua. Janson, E. W., Librarian, 21, Fonthill Road, Tollington Park, N. Janson, O. E., 21, Fonthill Road, Tollington Park, N. Jekel, Henri, 13, Rue de Lille, Paris. John, Hvan, Llantrisant, Pontypridd. Kirby, W. F., Royal Dublin Society, Kildare Street, Dublin. *Knox, H. Blake, 2, Ulverton Place, Dalkey, Dublin. Kuper, Rev. C. A. F., M.A., The Vicarage, Trelleck, Chepstow. Lacerda, Antonio de, Bahia. Lang, Capt. A. M., R.E., Civil Engineering College, Roorke, India. Latham, A. G., Weaste Hall, Pendleton, Manchester. Lebour, G. A. L., F.R.G.S., Geological Survey Office, Jermyn Street, S.W. Lendy, Capt. A. F., F.L.S., Sunbury House, Sunbury, 8.W. Lewis, W. Arnold, 4, Crown Office Row, Temple, E.C. Lingwood, R. M., M.A., F.L.8., 1, Derby Villas, Cheltenham. Llewelyn, J. T. D., M.A., F.L.S., Ynisygerwn, Neath. Logan, R. F., Hawthornbrae, Duddingston, Edinburgh. Lowe, W. H., M.D., Balgreen, Murrayfield, Edinburgh. Lowsley, Lieut. Barzillai, R.E., Demerara. Lubbock, Sir John, Bart., M.P., F.R.S., &¢., High Elms, Farn- borough. Lucas, B. J., Upper Tooting, 8.W. M‘Caul, 8., B.C.L., Rectory House, London Bridge, E.C. M‘Intosh, J. M‘Lachlan, Robert, F.L.8., Secretary, 39, Limes Grove, Lewis- ham, 8.E. Marseul, L’Abbé S. A. de, Boulevard Pereire, 271, Paris. Marshall, Rev. T. A., M.A., F.L.S., St. Albans. Marshall, William, Elm Lodge, Clay Hill, Enfield. Mathew, G. F., R.N., F.L.S., Raleigh House, Barnstaple. May, J. W., Arundel House, Percy Cross, Fulham Road, 8.W. Meek, Edward G., 4, Old Ford Road, E. Melvill, J. Cosmo, B.A., 16, Back Square, Manchester. Mercer, Albert, 38, Richmond Road, Islington, N. Miskin, W. H., Supreme Court, Brisbane, Queensland. Mniszech, Comte G. de, 22, Rue Balzac, Paris. Moore, Frederic, 110, Oakfield Road, Penge, 8.E. Mosse, G. Staley, 12, Eldon Road, Kensington, W. Miller, Albert, F.L.8., Eaton Cottage, Sunny Bank Road, South Norwood, 8.E. xiv Date of Election 1870 1849 1869 1841 1840 1854 1869 1852 1870 1851 1867 1866 1870 1871 1865 1871 1857 1869 1865 1868 1861 1865 1866 1865 1861 * 1849 * 1865 1866 1870 1864 1862 1868 1847 1851 1852 1867 1853 1863 1850 1869 * 1848 s ee a sees 2 + +a mmm wm LIST OF MEMBERS. Murray, Rey. R. P., Mount Murray, Isle of Man. Newman, Edward, F.L.S., F.Z.S., M. Imp. L.C. Acad.,7, York Grove, Queen’s Road, Peckham, S.E. Oberthur, Charles (fils), Rennes. Owen, Richard, M.D., F.R.S., &c., British Museum, W.C. Parry, Major F. J. Sidney, F.L.8., 18, Onslow Square, S.W. Pascoe, Francis P., F.L.S., 1, Burlington Road, Westbourne Park, W. Pearson, W. H., Ivy Hall, Solihull, Birmingham. Pickersgill, J. C., Hooley House, Coulsdon, Croydon. Porritt, G. T., Clare Hill, Huddersfield. Preston, Rey. T. A., M.A., The College, Marlborough. Pryer, H. J. S., Yokohama, Japan. Pryer, W. B., Shanghai. Puls, J. C., Place de la Calandre, Ghent. Raine, F., South Road, Durham. Ransome, Robert James, Ipswich. Riley, C. V., State Entomologist, St. Louis, Missouri. Robinson, EH. W., 3, Bartholomew Road, N.W. Robinson, W. Douglas, Kirkennan, Dalbeattie, N.B. Rogers, W., 42, Old Town, Clapham, 8.W. Rothney, G. A. J., Addiscombe. Ruspini, F. O., Fulshaw Farm, Wilmslow, Cheshire. Rylands, T. G., F.L.S., F.G.S., Highfields, Thelwall, Warring- ton. Salvin, Osbert, M.A., F.L.S., &c., 32, The Grove, Boltons, S.W. Saunders, Edward, F.L.S., Hill Field, Reigate. Saunders, G. S., Hill Field, Reigate. Saunders, S. S., late H. M. Consul General, Ionian Islands. Saunders, W. F., F.L.S., Hill Field, Reigate. Saunders, W. Wilson, F.R.S., Tr. & V.P.L.S., &c., Hill Field, Reigate. Schaufuss, L. W., Ph. D., M. Imp. L. C. Acad., &c., Dresden. Schrader, H. L., Shanghai. Seaton, E. M., 28, Belsize Park, N.W. Semper, Georg, Altona. Sharp, David, M.B., Eccles, Thornhill, Dumfriesshire. Shearwood, G. P., Cedar Lodge, Stockwell Park, S.W. Shepherd, Edwin, Wallington, Surrey. Sheppard, Augustus F., Rose Bank, Eltham Road, Lee, S.E. Sheppard, Edward, F.L.S., 18, Durham Villas, Kensington, W. Sidebotham, J., 19, George Street, Manchester. Signoret, Dr. Victor, 51, Rue de Seine, Paris. Smith, E. A., 27, Richmond Crescent, Islington, N. Smith, Frederick, 27, Richmond Crescent, Islington, N. Smith, Henley G., Warnford Court, E.C. Spence, W. B. Stainton, H. T., F.R.S., Sec. O.8., &c., Mountsfield, Lewis- ham, S.E. . Date of Election 1862 1837 1866 1854: 1850 1856 1866 1838 1853 1859 1869 1849 1866 1850 1870 1858 1863 1866 1866 1850 1869 * 1869 1845 1855 * 1868 1865 1849 1863 1843 1862 1866 LIST OF MEMBERS. xV Stevens, John §., 38, King Street, Covent Garden, W.C. Stevens, Samuel, F.L.S., Treaswrer, 28, King Street, Covent Garden, W.C. Swanzy, Andrew, 122, Cannon Street, E.C. Thompson, Miss Sophia, Barn Hill, Stamford. Thompson, Thomas, 14, Parliament Street, Hull. Thomson, James, 28, Rue de l’ Université, Paris. Thornborrow, W., 4, Provost Road, Haverstock Hill, N.W. Thwaites, G.H. K., Ph. D., F.R.S., F.L.8., Ceylon. Tompkins, H., 3, Colonnade, Worthing. Trimen, Roland, F.L.S., Colonial Office, Cape Town. Vaughan, Howard, 54, Chancery Lane, W.C. Vaughan, P. H., Redland, Bristol. - Verrall, G. H., The Mulberries, Denmark Hill, 8.E. Walker, Francis, F.L.S., Elm Hall, Wanstead; N.E. Walker, Rey. F. A., M.A., F.L.S., Elm Hall, Wanstead, N.E. Wallace, Alexander, M.D., Trinity House, Colchester. Wallace, Alfred R., F.LS., F.Z.S., &c., President, The Glen, Grays, Essex. Walsingham, Lord, M.A., F.Z.8., &c., 23, Arlington Street. W. Ward, Christopher, Halifax. Waring, 8S. L., The Oaks, Norwood, 8.E. Waterhouse, C. O., British Museum, W.C. Waterhouse, G. R., F.Z.S., &c., British Museum, W.C. Websdale, C. G., 78, High Street, Barnstaple. Weir, J. Jenner, F.L.S., 6, Haddo Villas, Blackheath, S.E. Were, R. B., 35, Osborne Terrace, Clapham Road, S.W. Westwood, Professor J. O., M.A., F.L.S., &c., Oxford. White, F. Buchanan, M.D., Perth. White, Rev. W. Farren, Stonehouse Vicarage, Gloucestershire. Wilkinson, S. J., 16, Austin Friars, E.C. Wix, William, Isbells, Reigate. Wollaston, T. Vernon, M.A., F.L.8., 1, Barnepark Terrace, Teignmouth, Devon. Wormald, Perey C., 2, Clifton Villas, Highgate Hill, N. Wright, Professor E. Perceval, M.A., M.D., F.L.S., &¢., 10 Clare Street, Dublin. 2 1865 §. Young, Morris, Free Museum, Paisley. en Vege, . ¥ Ly 7 i ati 5 a ea a ‘ unl 4 t ’ : : 4 re ye i " j ; m nen ii pass) YOU MME Bile a A 1 Posed y fie i. ay . 6 y Re VERE ha ge ar Ay yr, P i . t ac Sesh ha Veen 4 ; i" ; ; teed i a : >a ; ; ; f ears ie , oo | +. : i Pay ; t : f 7 e yt i f ur oY Pty Al THE TRANSACTIONS ENTOMOLOGICAL SOCIETY LONDON FOR THE YEAR 1871. [= I. A Monograph on the Ephemeride. By the Rev. A. K. Eaton, B.A. {Read 5th December, 1870.} Part I. The Nomenclature of the Hphemeride. THE present communication is an introduction to a series of papers on the Hphemeride. In these papers I hope to give a detailed account of the organization and deve- lopment of some characteristic British species of the Family. My original plan was to treat of the British Fauna alone. In the course of my investigations, how- ever, I found that the nomenclature of the Family at large was corrupt, and therefore I have been led to review the synonymy of the whole group. In order to ac- complish this, I have been obliged to give at second- hand descriptions of many foreign species. These incor- porated descriptions I have, for the sake of uniformity, translated into Latin. Jt is always difficult, and sometimes impossible, to identify species by reference to mere colour descriptions and admeasurement, without recourse to the distinctions afforded by special structures. I have therefore avoided the use of analytic tables and diagnoses for the determi- nation of species. TRANS, ENT. soc. 1871.—partTi. (MARCH.) B 2 Rey. A. H. Eaton’s Monograph Structure has not hitherto received sufficient considera- tion in descriptive publications; which makes it necessary to examine all authentic specimens of described Hpheme- ride extant in collections, before the synonymy of the known species can be settled. With a view to reform, I have examined the undermentioned collections. Lists of the type specimens in each are given under the titles of the works in which they were originally described. Should I have opportunity, I will notice the contents of the principal French and German collections in some future part of my work. Through the kindness of Dr. Gray, I had unlimited access to the collections in the British Museum, com- prising Stephens’ collection (see Steph. 1835-6), Mr. Wollaston’s collection (see Hag. 1865), and the general collection of Newroptera (see Walk. 1853 and 1858-9). At the Linnean Society’s Library I examined the col- lection of Linné (see Lin. 1746). Mr. R. M’Lachlan has given me every assistance, by placing in my hands his valuable foreign collection (M’Lach. 1868, HEtn. 1871), and his British collection (Etn. 1870), and making them to all mtents my own. Through the hospitality of Mr. J. C. Dale, I had the pleasure of spending several days in gathering informa- tion concerning the geographical range of species in his British collection, and in describing the rarities in his foreign collection (see Htn. 1871). In the Museum at Oxford, with the permission of Professor Westwood, I inspected the University’s general collection (Htn. 1871), Prof. Westwood’s collection( Westw. 1840), and Mr. A. Ronalds’ collection (Ron. 1836). The cabinets of my own University contain no remark- able Hphemeride. Some Australian species, sent by Professor M’Coy, of Melbourne, to Mr. F. Walker, were forwarded to me (Htn. 1871) ; and Mr. P. C. Wormald obliged me with the loan of his collection. At Geneva, M. A. E. Pictet very kindly submitted to me the remains of Professor J. F. Pictet’s collection (Pict. 1848-5), and some Spanish Hphemeride which he had himself collected (Ed, Pict. 1865). M. de Selys-Longchamps’ collection, containing valu- able type specimens, was sent to me (see Lat. 1805; Guer. 1829-43; Ramb. 1842; Hag. 1858-9, 1861, 1864; Hin. 1871). on the Hphemeride. 3 The late State Entomologist of Illinois entrusted me with some authentic specimens of American species which he transmitted for the British Museum (Walsh 1862-3) . My own types of new species are placed in the British Museum. In the subjoined list of publications relating to the Ephemeride, the titles of those which I have been unable to collate are distinguished by asterisks prefixed; and the names originated in each work are given after its title. My thanks are due to Mr. G. R. Crotch, of the Cambridge University Library, for the great assistance he has rendered me in the preparation of the bibliogra- phical portion of this paper; and I am also under great obligations to Mr. J. C. Dale, Professor Westwood, Mr. C. O. Waterhouse, and Mr. R. M’ Lachlan, for enabling me to give references to scarce books. Authors anterior to those of the seventeenth Century are mentioned by Clutius (1634), and by Pictet (1843-5). The following list is arranged in chronological order, and the abbreviations employed in the citations are given in brackets, immediately after the year of publication. 1634 (Clut.). Aug. Cluyt, Opuse. duo singularia; ii. De Hemerobio sive Ephemero, pp. 61-103. 1662 (Mey). J. de Mey, in J. Gédart’s Metamorph. et Hist. Nat. Ins. i. Appendix, pp. 193-200. 1675 (Swam.). J. Swammerdamm, Ephemeri vita.— [See Tyson, 1681.) *1680 (Bleg.). N. de Blegny, De quelques papillons qui paraissent une fois tous les ans sur les bords de la Meuse; in Temple d’Esculape, An. 2e, p. 188 (Hag.). 1681, E. Tyson, (a translation of) Ephemeri vita, by J. Swammerdamm, pp. 44, pls. 8, 4to. *1718, J. J. Baier, De Ephemeri vita, Adagium medicinalium centuria, pp. 54 (Hag.). *1723 (Kul.). J. A. Kulmus, Yon einem gewissen Fisch-Insect; in Bresl. Natur. u. Kunstgesch. pp. 292-3 (Hag.). 1735 (Lin. 8S. N. i). K. Linné, Systema Nature, ed. i—Insecta,.... Angioptera, .... Ephemera. 1737-8 (Swam.). J. Swammerdamm, Biblia Nature, i. 234-70; i. pls. xiii-xy. 1740 (Lin. S. N. ii). K. Linné, Systema Nature, ed. ii., p. 60. Gymnaptera. 1741 (Targ.). G. Targioni-Tozzetti, Lettera sopra una numerosissima specie dei farfalle vedutasi in Firenze; pp. 32, frontisp. figs. 1-5. B2 4 Rev. A. E. Eaton’s Monograph 1742 (Réaum.). R. A. F. de Réaumur, Des Mouches appellés Ephé- méres ; Mém. pour servir 4 Vhist. des Ins. vi., pp. 457-522, pls. xlii-xlvi. 1746 (Col.). P. Collinson, Some observations on a sort of Libella or Ephemeron; in Phil. Trans. vol. xliv., p. 329, pl. ii. 2-4. 1746 (Lin. F. 8. i). K. Linné, Fauna Suecica, ed. i. pp. 226-7, Nos. 750-5. [In Linné’s own interleaved copy of this work, MS. names are written before the index numbers ; viz. :—‘‘vulgata’’ before 750; ‘ bioculata”’ before 751; “mutica” after 752; ‘* culiciformis”’ before 753; “horaria”’ before 754, above “minima” erased; and ‘‘vespertina”’ before 755. Re- ferences are made in the text to some of his earlier publications; viz. :— after 751, Acta Upsal. (1736) p. 27.2; after 754, Act. Ups. p. 27. 3; and to his Iter @land. (Hlandska Resa, 1745) p. 21. In his cabinet are—2 @ sub. spurious, and 1 ¢ sub. ticketted 750 (perhaps by Linné junr.) of HE. vulgata; 2 g im. spurious, of L. margi- nata; 1 @ sub. spurious, and 1 9? sub. ticketted nigra” in Linné’s MS., of L. marginata; 2 9 im. spurious, labelled “ culiciformis,” of a Cenis; 2 2 im. spurious, of C. dipterum; 1 g im. ticketted 751 (in the same handwriting as the 750 under the Z. vulgata g sub.) of Siphlu- rus Linneanus, nov. sp.; and 2 2 im., unlabelled, and spurious, of Heptagenia elegans. The Librarian of the Linnean Society (who rendered me every assist- ance during my examination of the collection), thinks that the numbers 750 and 751 are Linné’s autograph, as the “ nigra’? undoubtedly is. There is a close resemblance between these figures and certain others in the handwriting in the Author’s own books. However, notwithstanding that the tickets are apparently in Linné’s autograph, and the specimens are seemingly Linnean, it is evident that the specimens ticketted 751 and nigra are not authentic, because they altogether disagree with the diag- noses 751 in F. §.i., and 1478 nigra in F. S. ii., respectively. The MS. reference to ‘* Schaef. ic. 175, f. 1, 2” under E. bioculata (an entirely dif- ferent insect from the one figured) in the Author’s own copy of 8. N. Xll., suggests the possibility of the specimens in question haying been placed by Linné in his cabinet after the publication of 8. N. xii.; and if this were the case, these specimens having been newer than the original types, it is likely that they may have been in a better condition than those, and thus have stood a greater chance than they of being kept by the owner.] 1747 (Lin. 8. N. v.). K. Linné, Systema Nature, ed. v. [Reprinted in 1748.] Ordo 3, Neuroptera, p. 62. E. maculata, E. minima. 1749 (Rees.). A. J. Résel, Insecten Belustigung. ii. 53-60, pl. xiii. 1-6, [Pictet quotes certain names as of the authorship of Résel (whose de- scriptions and figures are not named). These names probably originated in C. Schwarz’s ‘‘ Nomenclator tiber die in den Réselschen Insect. Belust. &¢.,”” which was published many years later (1793-1830.] ; *1753 (Pontop.). E. Pontoppidan, Det forste Férség paa Norges natur- lige Historie. Vol. ii. ch. ii. (An edition in German, 1754, and another in 1765; see Pontop. 1765). 1755 (De G.). K. de Geer, Observations sur les Ephéméres; in Mém. Say. Htr. Acad. Paris, ii. 461-9. pl. xvii. 1-2. *1757 (Schef.). J. C. Schaffer, Das fliegende Uferaas oder der Haft &e., p. 84. [Reprinted in his ‘‘ Abhandlungen yon Insecten,’’ iii. 30, pl. i.] (Hag. and Pict.). on the Hphemeride. 5 1758 (Lin. S. N. x.). K. Linné, Systema Naturm, ed. x; i. 546-7. E. vulgata, bioculata, culiciformis, horaria, mutica, vespertina. [The author’s interleaved copy of S. N. x. contains the following MS. notes and references :— L.vulgata, Note; E. cauda 3-seta corpore luteo, alis hyalinis reticulatisque [=E. danica, Mil. ?]; ref. after 750, Geof. 2, p. 238, n.1, Sulz. Ins. t. 17, f. 103. Note; H. ————, Res. ins. 2. aquat. t. 12, f.2,6. E. cauda triseta alis albis margine exteriore fusco. Habitat Upsaliw, Fabri- cius....Corpus fuseum [evidently marginata, L.]. On p. 547, and the op- posite leaf—H. bioculata, ref. after 751, Geof. 2, p. 239, n. 5, t. 18, f. 42. Note; 2 alis ut totum corpus pallide flavescentibus. E. culiciformis, ref. after 753, Geof. 2, p. 240, n. 6: ref. after Resel, Poda, ins. t. i. f. 10. EH. horaria, ref. after 754, [Geof.] 2, p. 240, n. 8 E. mutica; Note, E. cauda biseta, alis albis hyalinis ‘striatis, thorace fusco, abdomine albo; ref. Geof. 2, p.240 [n.7]. H.vespertina, Note; cauda triseta; ref. after Gil. 21, Geof. 2, p. 239, n. 4. 1760 (Kr.). OC. C. Kramer, Dissertatio inauguralis, sistens specimen Bogie Danice,...preside B. J. de Buckwald, M.D., p. 26. [A mere ist. ] 1761 (Lin. F. 8. ii.). K. Linné, Fauna Suecica, ed. ii. pp. 376-8, Nos. 1472-80. LE. fuscata, diptera, nigra, striata. [The Author’s copy has no MS. notes. ] 1761 (Sulz. Ken.). J. H. Sulzer, Die Kenntzeichen der Insekten, p. 43, pl. xvii. 103. 1761 (Pod. Mus. Gr.). N. Poda, Insecta Musei Grecensis, pp. 97-8, pl. 1.10. HE. ignita, maculata, speciosa. *1763 (Pontop. Atl.). E. Pontoppidan, Den Danske Atlas, pl. i. 1763 (Scop. E. Carn.). G. A. Scopoli, Entomologia Carniolica, pp. 253-4, Nos. 683-7, pl. xxxviii. 683. HE. gemmata, albipes, parvula. 1764 (Geof.). E. L. Geoffroy, Histoire Abrégée des Insectes qui se trouvent aux environs de Paris, ii. 234-41, Nos. 1-8, pl. xiii. 4. 1764 (Mil. F. Fr.). O. F. Miller, Fauna Insectorum Friedrichsdalina, p- 68, Nos. 554-7. EH. danica. 1765 (Pontop. Nat.). E. Pontoppidan, Die Naturhistorie in Danne- mark, p. 223, Nos. 1-3, pl. xvii. [A wretched figure. ] 1766 (Schef. Elem.). J. C. Schiffer, Elementa Entomologica, pl. Ixii. *1766-9 (Hout.). M. Houttuyn, Natuurkundige Beschrijving der In- sekten (Hag.). 1767 (Lin. S. N. xii.). K. Linné, Systema Nature, ed. xii., part ii. pp. 906-7, Nos. 1-11. #. lutea, marginata. [Linné’s own (not interleaved) copy of 8. N. xii. contains the fol- lowing MS. references. On p. 906.—E. vulgata, after Carn. 683, f. 683, De Geer 2, t. 16, f. 1-9, 1-13; after Sulz. .... f. 103, Schef. Ic. 9, f: 5. E. vespertina, after Gil. 21, Rees. ins. aqu. t. 17, f. 14. HE. bioculata, after Suec. 1473, Schef. ic. 175, f. 1, 2. On p. 907—E. nigra, after Suec. 1478, Schef. ic. 154, f. 1,2. EH. diptera, after Suec. 1477, De Geer, 2, TLS, f.:5.) *1769-72, J. Berkenhout, Outlines of the Natural History of Gt. Britain and Ireland. [The Entomology is reproduced in ed. ii., 1789.] 1771 (De G. Mem.). K. de Geer, Mémoires pour servir a l’histoire des Insectes, t. ii. part 2, pp. 621-56, Nos. 1-5, pls. xvi-xviii. (PI. xvii. fig. 13, is not that of a gill of a true Leptophlebia.] 6 Rev. A. E. Eaton’s Monograph *(1773], J. Hill, A decade of curious insects, pls. vii, viii. [E. culici- formis, Hill, is a Perla; E. rupestris, Hill, is a Trichopteron.| (Hag-) *1774 (Schef. Abh.). J. C. Schiffer, Abhandlungen von Insecten, iii. 30. (Pict.). 1775 (Georg. Bem.). J. G. Georgi, Bemerkungen auf einer Reise im Riissischen Reiche, i. 190. [A mere list.] 1775 (Fab. 8. E.). J. C. Fabricius, Systema Entomologie, pp. 303-304, Nos. 1-11. Ordo Synistata. H. venosa. 1776 (Schef. Ic.). J. C. Schiffer, Icones Insectorum circa Ratisbonam indigenorum. Vol. i. pl. ix. 5, 6; xlii.7. Vol. ii. pl. cliv. 1, 2; clvi. 2, 8; clxxy. 1-3. Vol. iii. pl. cciv. 3; ccxxix, 2, 3; cexxxix. 4, 5. [For Panzer’s nomenclature, see Pz. 1804.] 1776 (Mil. Pr.). O. F. Miller, Zoologie Danice Prodromus, pp. 142- 3, Nos. 1640-51. EH. plumosa, sulphurea, diaphana, luteola, russula, an- nulata, berolinensis. 1776 (Sulz. Gesch.). J. H. Sulzer, Abgekiirzte Geschichte der Insecten, pp. 169-71, pl. xxiv. 6,7. EH. helvola. 1776 (Schr. Beyt.). F. v. P. Schrank, Beytrage zur Naturgeschichte, p- 82. H. flava. 1777 (Fab. Gen.). J. C. Fabricius, Genera Insectorum, p. 244. HE. halterata. 1781 (Barb.). J.Barbut, Les Genres des Insectes de Linné, pp. 209-13, pled. de 1781 (Schr. En.). F. v. P. Schrank, Enumeratio insectorum Austriz indigenorum, pp. 302-5, Nos. 602-6. 1782 (Fab. Sp.). J.C. Fabricius, Species Insectorum, i. pp. 383-5, Nos. 2. 1782 (Har. Exp.). M. Harris, An Exposition of English Insects, pl. vi. 1-3. 1783 (Retz.). A. J. Retzius, Caroli De Geer Genera et Species Insecto- rum, pp. 56-7, Nos. 180-4. HE. communis, albipennis, cincta, fusco-grisea. 1785 (Thunb.). K. P. Thunberg, Donationes Thunbergiane ; in Mus. Nat. Acad. Upsaliensis, p. 81. [A mere list.] 1785 (Foure. E. Par.). A. F. Fourcroy, Entomologia Parisiensis, ii. 350-2, Nos. 1-8. H. reticulata, viridescens. 1787 (Fab. Mant.). J. C. Fabricius, Mantissa Insectorum, i. 243-4, Nos. 1-12. 1789 (Berk. Outl.).. J. Berkenhout, Outlines of the Natural History of Gt. Britain and Ireland, ed. ii., i. 150, Nos. 1-5. 1789 (Raz.). G. de Razoumousky, Histoire Naturelle du Jorat, p. 210. 1789 (Vill.). ©. J. de Villers, Caroli Linnwi Entomologia, iii. 16-22, Nos. 1-20, pl. vii. 8. EH. nervosa. 1789 (Reem. Gen.). J. J. Romer, Genera Insectorum Linnei et Fabricii iconibus illustrata, pl. xxiv. 6, 7. Explic. p. 23. [Figures reproduced from Sulz. 1776.] 1789 (Zsch.). J.J. Zschach, Museum Leskeanum, i. 150, Nos. 18-20, [Names were assigned by Gmélin in 1790.] 1790 (Ros. F. Etr.). P. Rossi, Fauna Etrusea, ii. 7-9, Nos. 672-7. *1790, J. G. Georgi, Versuch einer Beschreibung der Residenzstadt St. Petersburg. (Hag.) on the Ephemeride. 7 1790 (Gmél.). J. F. Gmélin, Linnei Systema Nature, ed. xiii., t. i. part v. pp. 2628-30, Nos. 1-18. E. notata, testacea, ferruginea, stigma, imanis. 1791 (Ol. Enc. Méth.). G. A. Olivier, Article “Ephemera,” in Ency- clopédie Méthodique, vi. 404-22, E. longicauda, virgo. 1791 (Fisch. Vers.). J.B. Fischer, Versuch einer Naturgeschichte von Livland, pp. 337-8, Nos. 564-6. 1793 (Fab. E.8.). J. C. Fabricius, Entomologia Systematica emendata et aucta, t. iii. part i. pp. 68-71, Nos. 1-16. EH. marocana, brevicauda. *1794, U. J. Seetzen, Beitrag zur Naturgeschichte der Ephemera lutea, L.; in Meyer’s Magaz. f. d. Thiergeschichte, i. 41-63 (Hag.). 1795 (Don. B.I.)._ E. Donovan, Natural History of British Insects, iv. 53, pl. exxviii. *1796 (Licht.). Lichtenstein, Cat. Mus. Holthuisen, iii. 1938, No. 52. EB. noveboracana. (Hag.) 1796 (Lat. Préc.). P. A. Latreille, Précis des Caractéres Genériques des Insectes, p. 96. 1798 (Cuv. Tab. Elem.). G.L. C. D. Cuvier, Tableau Elem. de I’Hist. Nat. des Animaux, livr. vii. pp. 483-5. Agnathes. 1798 (Schr. F. B.). F. vy. P. Schrank, Fauna Boica, pp. 196-9, Nos. 1937-49. P. erythrophthalma, fuscula, familiaris. oe es (Ced.). J. Cederhjelm, Faunx Ingrice Prodromus, pp. 133-5, Nos. 1800-2, J. G. Georgi, Geogr. physik. und naturhist. Beschr. des Rus- sichen Reichs. *1800, Thl. iii. vi. 1802, p. 324. E. fuliginosa. 1801 (Web.). F. Weber, Observationes Entomologice, pp. 99-100. EB. atrostoma. 1802 (Will.). Dr. Williamson, On the Ephoron leukon, usually called the White Fly of Passaik River; in Trans. Amer. Soc. Philad. v. 71-3. 1802 (Illig.). J. K. W. Illiger, Magazin fiir Insectenkunde, i. 187-8, No. 17. E. flos-aque. 1802 (Walck.). C. A. Walckenaer, Faune Parisienne, ii. 7-10, Nos. 1-11. *1802. Elements of the Natural History of the Animal Kingdom; ed. anonym. [See 1817, Stewart.] 1804 (Pz. Explic. Schef. Ic.). G.W. F. Panzer, in the explanation of Schiiffer’s Icones. (see 1776). E. hyalina, Semblis marginata. 1805 (Pz. F. Germ.). G. W. F. Panzer, Faune Insectorum Germanics Initia, Heft xciv, Nos. 16, 17. 1805 (Lat. H. N.). P. A. Latreille, Hist. Nat. des Crustacés et des In- sectes, xiii. 93-100, Nos. 1-19. EH. Swammerdiana. Subulicornes. [In M. de Selys-Longchamps’ collection is Latreille’s type of E. Swam- merdiana, Pal. longicauda, 1 g subim.} aed (Dum. Z. Anal.). A.M. C. Duméril, Zoologie Analytique, pp. 1806, G. Shaw, General Zoology, vol. vi. part ii. pp. 249-53, pl. 81-2. E. Swammerdamiana. ae (Lat. Gen.). P. A. Latreille, Genera Crustaceorum et Insectorum, iii. 184. 1810 (Lat. Con. Gen.). P. A. Latreille, Considerations Générales sur l’Ordre Naturel des Insectes, &c., p. 268 & p. 434. 8 Rey. A. E. Eaton’s Monograph 1815, W. E. Leach, Article “‘ Entomology” in Brewster’s Edinburgh Encyclopedia, ix. 187. Tribe 2, EpHemertprs. Fam. 1, Banripa. Gen, 488, Baetis; B.bioculatus. Gen. 489, Cloeon; C.pallida, Leach, MSS. _#. diptera, Lin. Fam. 2, Epnemertpa. E.vulgata, Lin. [The article being contributed anonymously, Leach quoted his own MSS.} 1817 (Cuv. R. A.i.). G.L. ©. D. Cuvier, Le Régne Animal, ed. i., t. iii. pp. 426-30. 1817 (Lamarck, i). J.B. P. A. de M. Lamarck, Histoire Naturelle des Animaux sans Vertébres, iy. 218-22. 1817 (Sav.). J.C. L. de Savigny, Description de Egypte. Histoire Naturelle, Planches, t. ii. Névroptéres, pl. ii. 4-8. [In t. i. 194, Explic. des Pls., he merely states that the figures belong to the Gen. Ephemera. | 1817 (Stew. Elem.). Stewart, Elements of the Natural History of the Animal Kingdom, ed. ii., vol. ii. pp. 224-6, Nos. 1-9. *1818, F. v. P. Gruithuisen, in Salz. Medic. Zeit. No. 92. Ephem. larva. (Hag.) 1819 (Sam. E. Com.). G. Samouelle, The Entomologist’s useful Com- pendium, pp. 259-60, pl. vii. 2. Alsop.65. [An incorporation of Leach’s MS. with modifications. Fam. Hphemeride is put for Tribe Ephemerides, Leach; and Leach’s named Families are ranked as nameless Stirpes.] 1821, W. Wood, Illustrations of the Linnzwan Genera of Insects, ii. 21-3, pl. xlvii. 1823 (Dum. Con. Gen.). A. M. C. Duméril, Considerations Générales sur la Classe des Insectes, p. 204, pl. xxviii. 4, 5. 1823 (Say, W. Q. R.). T. Say, Descriptions of Neuroptera collected by the Expedition under Major 8S. H. Long; in * The Western Quarterly Reporter, vol. ii. p. 162-3; repr. by Le Conte 1859, vol. i. 171-2. Buaetis femorata, Cloeon posticata, Ephemera cupida. 1824 (Say, Long’s 2d Exp.). T. Say, Narrative of an expedition to the source of St. Peter’s River, under Major 8. H. Long; * W. Q. R. vol. ii. 303-5 ; ed. Le Conte 1859, vol. i. 203-4. Baetis bilineata, alternata, alba. 1824, J. Fleming, Article ““Insecta,” in Encyclopedia Britannica, Sup- plem. yol. y. 53. Hphemerade. 1825 (Lat. Fam.). P. A. Latreille, Familles Naturelles du Régne Ani- mal, p. 434. 1825 (Dum. Elem.). A. M. C. Duméril, Hlemens des Sciences Natu- relles, ii. 142, pl. v. 16-7. 1827, C. G. Carus, Entdeckung eines einf. Blutkreisl. &c., *p. 16, pl. lii. Isis, iv. 317, pl. iv. 3. [Circulation in an Ephem. nymph.] 1828, O. G. Costa, Fauna di Aspromonte, pl. i. 2. 1829 (Cuv. R. A. ii.). G.L.C. D. Cuvier, Le Régne Animal, ed. ii. t. v. pp. 241-4. 1829 (Gor. & Prit.). Goring and Pritchard, Natural History Objects for the Microscope, *ed. i; ed. iii. pp. 61-9, pl. ii. 4-6. 1829, J. F. Stephens, The Nomenclature of British Insects (ed. i. of the Catalogue,) ii. 305-7, Nos. 3369-3409. [A mere list. ] 1829, J. Curtis, A Guide to the Arrangement of British Insects, columns 132-3. [A mere list.] 1829-43 (Guér. Ic.). F. E. Guérin-Méneville, Iconographie du Régne Animal, vol. ii. part i. pl. lx. 7-9, vol. i. 384. EH. limbata. [In M. de Selys-Longchamps’ collections are Serville’s types of H. tit- BATA, Hexagenia, 1 g im.; EH. pirererRa, Cloeon, 1 g im.] on the Ephemeride. 9 1831, C. J. Carus, Fernere Untersuchungen tiber den Blutlauf in Ker- fen; in Act. Acad. Leopold. Carol. Akad. t. xv. Abth. ii. p. 11. [A mere statement that circulation is observable in the wings of E. lutea and man- ginata. | 1832, R. Wagner, Beobachtungen iiber den Kreislanf des Blutes und den Bau des Riickengefiisses bei den Insecten; in Isis, ix. 322, pl. ii. 1. 1832 (Grif. A. K.). G. R. Gray, The Class “ Insecta,” in Griffith’s eas Kingdom, ii. 296 and 313-20, pl. xciv.7,9. [Figures from Guér. c.] 1833 (Bowerb.). J. 8. Bowerbank, Observations on the circulation of blood in Insects; in Ent. Mag. i. 239-44, pl. ii. 1-6. 1834, A. H. Davis, Metamorph. of Ephemera; in Ent. Mag. ii. 322-3. 1834 (Sam. Ent. Cab.). G. Samouelle, Entomological Cabinet, ii. No. 53, pl. xxiv. 1. 1834 (Curt. Phil. Mag.). J. Curtis, Descriptions of some nondescript British species of May-flies of Anglers; in Lond. and Edinb. Philos. Mag. ser. 3, pp. 120-2. EH. fusca. B. dispar, costalis, elegans, mellea, straminea, flavescens, lateralis, semicolorata, carnea, vernus, autwmnalis. C. mar- moratum, obscurwm, unicolore, dimidiatum. Brachycercus Harrisella, chironomiformis, minima. [The numbers prefixed to the names in the text refer to the second ed. of the Guide.] 1834 (Curt. B. E.). J. Curtis, British Entomology, vol. xi. No. & pl. ececlxxxiy. 1835, E. Newman, The Grammar of Entomology, pp. 248 and 255. Ephemerites and Ephemerina. 1835 (Lamarck, ii.). J.B. P. A. de M. Lamarck, Hist. Nat. des Anim. sans Vertebres, ed. ii., t. iv. 422-5. HE. Swammerdania. 1835-6, Allen Thompson, Article “Circulation,” in Tod’s Cyclopedia of Anatomy and Physiology, i. 651-2. 1835 (Ste. Ill.). J. F. Stephens, Illustrations of British Entomology, Mandib. vi. 53-70, pl. xxix. EH. cognata, talcosa, submarginata, dispar, apicalis, rufescens, rosea, helvipes, dubia, minor. Cenis macrwra, dimi- diata, pennata, interrupta. Ba. longicauda, subfusca, obscwra, cingulata. Cl. ochraceum, hyalinatum, albipenne, cognatum, virgo. [The specimens in Stephens’ collection are named in accordance with his Catalogue, not with the Illustrations. The ticketted specimens, how- ever, partake in some measure of the nature of type specimens. Many of them are no doubt the originals of the descriptions in the Illustrations ; for Stephens had not access to many collections of Ephemeride; his descriptions are mostly taken from dried examples; and many of these specimens are of an older date than 1835. Those of them which conform to the descriptions in the Illustrations similarly named, may, therefore, be presumed to be virtually authentic. The collection comprises:—E. vunteata, 5 g im.; coanata, 3 g,5 2 im.; stigMA,2 ¢ im.; Tancosa l 2 im.; LurEa, 1 Heptagenia elegans, S im.; MARGINATA, 2 H. semicolorata, g im.; supMARGINATA, 1 L. helvipes, 2 im., &1 B. phwops, g im.; pDispar, 6, 1im., 1 subim.; nicRicans, 4 g im.; (pILUTA, absent); apicaLis, 2 Eph.ignita, g im., and 1 B. pheops, é im.; rurescens, 2 6,8 Y im.; puBis, 2 f im.; HELVIPES, 1 ¢ im.; RosEA, 1 ¢,1 2 im.; (vESPERTINA, absent). (C#NIS MACRURA, wanting); C. pennata, | 9; BREvVIcAUDA, 1 92; cHIRONOMIFOoRMIS, 1 macrura, § ; pimipmata, 2 g¢,1 9. Barris caupara,l ¢,2 9 im.; veNnosa, 1 6,22 im.; suprusca,1 9 im.; FLAvEScENS, ¢ 1subim., 2 lim.; Basauis, 2 g im.; stRIATA, B. phwops, 2 1 im., 1 subim.; pH®opa (=phwops) 1 subim.; opscura, 1 9 im.; HoRARIA, 1 Cloeon, sp. dub., 9 subim. and 10 Rey. A. E. Eaton’s Monograph Eph. ignita,1 8,12 im.; cunicrrormis, 4 B. pheops, g im. and 1 Cloeon, sp. dub., 2 subim.; ruscara, 1 buceratus, g im., 1C. luteolum, o im., binoculatus, § lim., 1 subim.,2 pheops, f im.; B1iocuLatus, 1 g im., 7 luteolum, 8 im.; crneuLATA,2 ¢ im. CLoronprPrERA, 9 5im., 3subim. ; ocHRAcHA, 2 C. luteolum, @ im., 1 B. binoculatus, 9 subim.; opscuRA, 1 B. binoculatus, 2 damaged; HyALInaTA, 3 C. luteolum, 2 im.; DORSALIS, 3 C. luteolum, g im.; coanara, 1 ¢ im.; consopnrinus, ¢ 4 im., 1 subim. ; virGo, 1 dipterum, g im., 1 russuluwm, 9 im., damaged. There are also— E. minor, 1 2 im.; B. lateralis, 1 g im.; B. annulata, 1 2 im.; B.par- vula, 1 g im.; and B.verna, 1 2 im. *1836, F. J. Ehrenberger, Dissertatio inauguralis Zoologica de Neu- ropterorum anatomia et physiologia. (Hag.) 1836 (Westw. Part. Cyc.). J. O. Westwood, in Partington’s British Cyclopedia, ii. 439. Macrocercus. 1836 (Ronaldsi.). A. Ronalds, The Fly-fisher’s Entomology, ed. i. [Pls. ix, xiii. & xiv. alone in this edition are worth citing. The figures in the later editions are mostly inferior to those in ed. i.] [The types comprise, —ii. Baetis pheops, 2 subim.; iii. Heptagenia, longicauda, 2 im.; viii. H. venosa, 2 im.; xv. H. longicauda, subim. ; xvi. Baetis, sp. dub., subim.; xvii. Baetis, sp. dub.; xix. H. elegans, 9 1 im., 1 subim.; xxii. H. insignis, $ subim.; xxiii. Baetis, sp. dub., subim.; xxv.afragment; xxviii. H.danica, 9 subim.; xxix. H. danica, 2 im.; xxxi. H. vulgata, g im.; xxxii. & xxxiii. absent ; xxxviii. & xlii. each H. longicauda, subim.; xliii. Cl. russulum, 2 subim. The Roman nu- merals are index numbers to the work. ] 1837, G. Dahlbom, Kort Underiittelser om skandinayiska Insekters, pp. 227-8, No. 151. é 1838 (Curt. B. H.). J. Curtis, British Entomology, vol. xy., No. & pl. dccviii. 1838, J. T. Lacordaire, Introduction 4 ’Entomologie, ii. 77. [Circula- tion described. ] 1888 (Perch. Gen.). E.Guérin & A. R. Percheron, Genera des Insectes, &e., livr. vi. pl. iv. LE. albicans. 1839 (Burm. Handb.). H.C. C. Burmeister, Handbuch der Entomo- logie, Bd. ii. Abth. ii. pp. 796-804 and 1015. Ozxycypha lactea, luctuosa, discolor. Cloe halterata, pumila. (Baetis) fusca, marginalis, aurantiaca, reticulata, luridipennis. Palingenia horaria, dorsalis. 1839, G. Newport, Article “ Insecta,” in Tod’s Cyclopedia of Anatomy and Physiology, ii. 864, fig. 345; and (circulation) p. 979. 1839, T. Say, Descriptions of New N. American Neuropterous Insects ; in Journ. Acad. Nat. Sci. Philadelphia, viii. 41-4; ed. Le Conte, 1859, ii. 411-13. B. interpunctata, arida, verticis, obesa. E. hilaris. 1840 (Zet.). J. W. Zetterstedt, Insecta Lapponica, columns 1044.6, Nos. 1-9. HE. hyalinata, vitrea. 1840 (Westw. Intr.). J. O. Westwood, Introduction to the modern elas- sification of Insects; vol. ii. Addenda, p. viii. Text, pp. 24-84, fig. Ixi. 1-20. Generic Synopsis, p. 47, Addenda to the Generic Synopsis, 158. Neuropt. Biomorphotica. Leptophlebia, Brachyphlebia. (The types in Prof. Westwood’s Cabinet, are :—LrpropHiesta, 1 margi- nata, 2 im., andl Eph.ignita, g im.; BracHypHLEstA, 2 Ba. binoculatus, 3 im.; Baeris{, Heptag. elegans.] 1840, Triepke, Hinige Bemerkungen tiber Ephemera flosaque, Iliger ; in Stet. Ent. Zeit. i, 54-8. 1840, F. 8. Voigt, Lehrbuch der Zoologie, v. 309-11, on the Ephemeride. 11 1840, G. A. W. Herrich-Schiiffer, Fauna Ratisbonensis, von K. L. Koch, Dr. A. Scheffer, und F. Forster, p. 346, Nos. 161-88. [A list.] 1840 (Blanch. N.H.). E. Blanchard, Hist. Nat. des Insectes, t. i. p. xxiv. Introd. Anatomie et Physiologie (circulation by Brullé) ; t. iii. 52-5, Nos. 1-11, pl. iii. 1. 1841 (Duf. Rech.). Léon Dufour, Récherches anatom. et physiolog. sur les Orthoptéres, les Hymenoptéres, et les Névroptéres, part iii., in Mém. par divers savans, Instit. de France, t. viii. pp. 560-4, 578-82 ; pl. xi. 167-8, anatomy. P. 580, footnote, E. flavipennis, nigrimana. 1841 (Burm.). H.C. C. Burmeister, Article “ Ephemera,” in Ersch & Gruber’s Encyclopiadie der Wissenschaften. Theil xxxy. 312-16. 1842 (Ramb. Névr.). J. P. Rambur, Hist. Nat. des Ins. Névroptéres, pp. 293-9, pl. viii. 2. E. hispanica, angustipennis, flavicans, rufa, chloro- tica, obscura, subinfuscata, brunnea, affinis. [The types sent to me by M. le Baron E. de Selys-Longchamps were :— E. nurea, 1 HE. glawcops, 2 im.; E. uispanica, 1 E. danica, g im.; E. LoNGicaupA, 1 Palingenia longicauda, g subim.; E. sANGUSTIPENNIS, 1 Heptagenia, 2 subim.; E. Fuavicans, 1 Potamanthus luteus, 2 im.; E. rura, 1 Heptagenia (venosa ?), 2 im.; E. cHnororica, | Pot. luteus, g subim.; Chor opscura, 4 Cloeon, 9 subim.; C. suBrnruscaATA, 1 Cloeon, 2 subim.; C. prunnEA, 1 Heptagenia lateralis, g subim.; C. arrinis, 1 Cloeon dipterum, $ im.; C. pumia, 1 Cloeon russulum, g im.; C. HAL- TERATA, 1 Cloeon russulum, 2 im. There were also CLoE pierera, 1 Cloeon dipterwm, 9 im. ; E. maprti- TENSIS (Ramb. MS.), 1 Heptag. angustipennis, 9 im.; E. Lonaicaupa,t 1 Pot. luteus, § im.; and a CENTROPTILUM LUTEOLUM, ¢ im.; from Rambur’s collection, not types. ]} 1843, J. Atkinson, Notes on Ephemera, in The Zoologist, i. 272-5. 1843-5 (Pict. Eph.). F. J. Pictet, Hist. Nat. des Ins. Névroptéres. Famille des Ephémérines. £. glaucops, guttulata. Pal. puella, indica, Savignyi. Ba. fluminum, cyanops, montana, purpurascens, semitincta, cerea, flaveola, guttata, australasica. Potamanthus Ferreri, Geerii, casta- neus, brunneus, gibbus, eneus, (and erythrocephalus, a misprint for ery- throphthalmus). (Cloe) Rhodani, translucida, alpina, melanonyx, litura, fasciata, undata. (Cenis) grisea, argentata, varicauda, oophora. Oligo- newia anomala. [As the authentic and spurious specimens are not distinguished in M. Pictet’s collection, an accurate enumeration of them could not be made. The collection contained:—E. vuneata, HE. danica; Danica, vulgata ; GLAUCOPS. Ba. FLUMINUM, subim.; VENOSA,im.; CYANOPS; PURPURASCENS, venosa, ¢ im.; SEMICOLORATA, ¢ and § im.; SEMITINCTA, semicolorata, g and 9 im. Por. (marginatus, L.) unnamed; Grxrt, L. helvipes, g im. subim.; cinctus, L. cincta, and 1 fusca; ERYTHROPHTHALMUS, EL. ig- nita. CiLoE Ruopant, B. Rhodani, with 2 C. luteolwm, subim., and 1 C. russulum, g im.; PUMILA; TRANSLUCIDA, C. luteolwum; MELANONYX, C. rus- sulum, g im., var. 1; DIPTERA; CH#NIS LACTEA; (PoLYMITARCYS SAVIGNII, unnamed). | 1845 (Schn.). W. G. Schneider, Verzeichniss der von Herrn Zeller im Jahre 1844 in Sicilien und Italien gesammelten Neuropteren, &c.; in Stet. Ent. Zeit. vi. 340, Nos. 13-14. (Cloe) fusca. 1846 (Fons.). E.L.J.H. Boyer de Fonscolombe, Notes sur huit espéces nouvelles d’Hymenoptéres et de Névroptéres trouvées aux environs d’ Aix ; in Ann. Soc. Ent. Fr., ser. 2, t. iv. 49-51. E. caliciformis (a misprint). 1846 (?), (Lab. & Imh.). J.D. Labram and L. Imhoff, Insecten der Schweiz, Bd. iv. (one plate, not numbered). 12 Rey. A. E. Eaton’s Monograph 1847, M. C. Verloren, Sur la circulation dans les Insectes; in Mém. Couron. Acad. Roy. Belg. t. xix. 49, pl. i. 1847, Ant. & Giov. Bap. Villa, Comparsa periodica delle Efimere nella Brianza ; in Economista, Novemb. 1847, p. 1-6 [illustrated]. 1847 (at. Nouv. Dict.). P. A. Latreille, Nouv. Dict. d’hist. Nat., t. x. 348-9, pl. xix. 5, 1848 (Corn.). C. Cornelius, Beitrige zur niheren Kenntniss der Palin- genia longicauda, Ol.; 38 pp., 4 pl. 1848 (Cuy. R. A., Crochard ed.). EH. Blanchard, in Cuvier’s Reg. Anim. by Crochard, t. xiii. 88-92, t. xiv. pl. cii. 1-1c. 1848 ree L. Calori, en ee Oe vavibare della Cloe Hees 1849 (Hag. Tebet): ETE i Eagsh, Uebersicht ae neueren Ties betreffend die Neuropteren Linné’s; in Stet. Ent. Zeit. x. 354-71. [In the critique of Pict. Ephem. (1843-5), Dr. Hagen indicated in this paper a genus Potamantius, restricted (type P. gibbus, Pict.) ; but he did not adopt the genus in his later writings. Mr. Walsh afterwards described this genus, with additional species, under the name Ephemerella. I have passed by Dr. Hagen’s usage, arid have adopted the later name for the genus. | *1850, L. H. Fischer, Beitraige zur Insecten-Fauna um Freiburg im Breisgau; in Jahresb. des Mannheim. Ver. fiir Naturk. pp. 60-70 (Hag.). 1851 (Sieb. Beitr. xii.). C. T. EH. von Siebold, Beitrage zur Fauna der wirbellosen Thiere Preussens (12th Beitr.); in *Neu. Preuss. Provinzial Blatt. Bd. xi. 8, Nos. 1-18. [A mere list.] 1851 (Blanch. Chili). E. Blanchard, in C. Gay’s Historia fisica y politica de Chille, vi. 103-7; Atl. Zool. Ent. Névrop. lam. ii. 2-8. (Cloe) vitripennis. *1852 (Imh. Bericht). L. Imhoff, Oligoneuria rhenana; in Bericht tiber Verhandl. d. naturf. Gesellsch. in Basel, x. 177-80. O. rhenana. *1853, J. A. Herklots, Het Haft, de langgestaarte Hendagsvlieg; in Jahrb. k. Zool. Genootsch. Amst. pp. 117-123. *1853, Forster, Notiz tiber die Hintagsfliege; in Corresp. Bl. zool. mineral. Ver. Regensburg, vii. 91-3. ~ 1853 (Kirsch. Ent. Misc.). C. L. Kirschbaum, Entom. Miscellen ; in Jahrb. Vereins f. Naturk. Nassau, Heft. ix. pp. 44-5. 1853 (Walk. Cat.). F. Walker, List of Neuropterous Insects in the British Museum. Part iil. pp. 535-85. H. simulans, Colombic, decora, Hebes, australis. Pal. lata, viridescens, occultata, natata, hwmeralis, bicolor, pallipes, concinna, nebulosa, albifilum, latipennis, vitrea. Ba. angulata, remota, vicaria, basalis, tessellata, albivitta, annulata, Taprobanes, deter- minata, invaria, fusca, debilis, canadensis, fuscata, scita, torrida, ignota. Cen. diminuta, sinensis, perpusilla. [The general collection of the British Museum contained in 1853 :—E. VuLGATA, ¢ 1 subim.,2im., 1 danica, 9 im.; panica,2 9 im. ; SIMU- LANS, 1 decora, g subim. ; Conomsrm, ub Toptasmetia, 9 subim.; ; DECORA, 1 ¢ im.; (HEBEs, wanting) ; AUSTRALIS, subim. 1 ¢,3 9. Por. LUTEUS, 1 Leptophlebia marginata, g subim.; Marcinatus, 1 g im.; crNncTUS, 1 Leptophlebia fusca, § im.; ERYTHROPHTHALMUS, Ephemerella ignita, 2 9 im.; RosEus, H. ignita, 1 2 im.; cosTanis, im. 1 ¢,2 9. Pau. viRGo, 1 g subim.; aupicans, 1 9 im.; Lata, 3 g¢ subim.; viripDEScENS, 1 H. bilineata, 9 subim.; occuLTaTa, bilineata, 3 Q subim.; Navava, 2 E. decora, 2° subim.; HuMpRALIS, 1 9 subim.; BICOLOR, 1 Siphlurus, 2 subim.; PALLIPES, Leptophlebia cupida, i 6 subim., 2 2 im. ; concinna, L. cupida, 1 g im.; NEBULOsA, 2 Leptophlebia, g im.; on the Ephemeride. 13 ALBIFILUM, Campsurus albifilum, 1 g im. & A. curtus, 1 g im.; LATIPEN- nis, 1 (Q subim., 2 im., ¢ im.), & 1 sp. dub. ¢ subim.; viTREa, 1 Heptagenia, 2 subim. Ba. riuminum, H. venosa,2 9 subim.; VENOSA, 1H. longicauda, g Y im.; montana, 2 H. insignis, § im.; LATERALIS, 1 9 im.; semrconoraTa, 1 g im.; cEREA, 1 H. flavipennis, f 2 im.; FLAvVEOLA, H. 1 9 im. subim., sp. dub. 1 2 subim.; avsrranasicA, 2 Leptophlebia, § im.; ELEGANS, 1 H. 9 subim.; suBrusoa, 1 Leptophlebia, marginata, g im.; LURIDIPENNIS, 1 H. ¢ im.; aneunata, 1 Hexagenia bilineata, g im.; (REMoTA, wanting); vicaria, 1 H. g im.; Basauis, 1 H. g im.; ressenuara, 1 A. vicaria, 9 subim.; auprvirra, Hexagenia, go 1 subim. 2 im.; annunata, 1 Siphlurus, ¢ im.; Tapropanes, 1 Lepto- phlebia, § im.; pereRMINATA, 1 H. ¢ im. (now a fragment merely) ; IN- varia, 3 Ephemerella, g im.; Fusca, (a.b.) H. g 2 im., (c), Leptophlebia cupida,1 g im.; pestis, 1 L. cwpida, $ im.; canapensis, 2 H. gf im.; FuscaTa, 1 Ephemerella invaria, g im. subim.; scrra, 2 Leptophlebia g im.; rorrmpA, 1 H. 2 im.; 1enora, 1 Isonychia, g im.; No. 45, 1 Lep- tophlebia cupida, 2 im. Cu. BIocuLaTA, (e,f),2 ¢ im., (g.) sp. nondescript. 1 $ im.; pumrma, 1 B. binoculatus, § im.; TRANSLUCIDA, 2 B. binoculatus, 9 im.; prpTERA, (a-c) 2 im.; cunicrrorMIs, 1 Leptophlebia helvipes, ? im.; srriatTa, 2 Ephemerella ignita, 9 subim.; veRNA, 1 B. pheops, $ im.; cINGuULATA, 1 Ephemerella ignita, g im; uyatinata, 1 binoculatus & 1 luteolum, 9 im.; CaN. BREVIcAUDA, 1 9 im.; piuruta, 1 g im.; sI- NENSIS, 1 Cloeon russulum, g im.; PERPUSILLA, 1 ¢ im.] 1854 (Pict. Trait. de Pal.). F.J. Pictet, Traité de Paléontologie (ed. 2) ii. 871. Palingenia macrops, Baetis anomala, Potamanthus priscus. *1854 (Letz.). K. Letzner, Ueber Palingenia virgo; in Arbeit. schles. Gesellsch. p. 101. 1854 (Hag.). H. A. Hagen, Ueber die Neuropteren der Bernstein Fau- na; in Verh. zool.-bot. Ver. Wien, iv. 221-32. [A mere list, containing the new names :—Palingenia gigas, Baetis longipes. | 1854 (Hag.). H. A. Hagen, Auffaillig nérdliches Vorkommen dreier grosser sudeuropiischer Insekten; in Stet. Ent. Zeit. xy. 316-19. 1855 (Hag.). H. A. Hagen, Die Ephemeren-Gattung Oligoneuria; in Stet. Ent. Zeit. xvi. 267-70, tab. i. O. rhenana, var. pallida. ~ 1856 (Pict. & Hag.). F. J. Pictet and H. A. Hagen; in C. G. Berendt’s Organische Reste im Bernstein, Bd. ii. 73-7, tab. vi. 1,2; vii. 5. Ba. gigantea, grossa. 1856 (Ronalds, y.). A. Ronalds’ Fly-fishers’ Entomology, ed. v. [In this edition, names were added to the original explanations of plates, and No. 29 is an Ephemerid.] 1857 (Brau.), F. Brauer, Neuroptera Austriaca, pp. Xvi, xvii. 24-27. 1858-59 (Hag. Syn. Ceyl.). H. A. Hagen, Synopsis der Neuroptera Ceylons ; in Verh. zool.-bot. Gesells. Wien, Part I, 1858, vol. viii. pp. 476-7, Nos. 22-31. Pot. fasciatus, annulatus, femoralis. (Cloe) tristis, consueta, solida, signata, marginalis. Part II, 1859, vol. ix. p. 206, Nos. 29-30, [In the collection of M. de Selys-Longechamps are the types of :—P. Fasciatus, Ephemera, 1 2 subim.; P. annuxatus, Leptophlebia, 1 g im.] 1859 (Hag.). H. A. Hagen, Ueber das Vorkommen von Palingenia longicauda in Preussen; in Stet. Ent. Zeit. xx. 431. 1859 (Schi.). J.C. Schiddte; in Berlin. Ent. Zeit. iii. 148. 1859 (Say, Le Conte rep.). J. L. Le Conte, The complete Writings of Thomas Say on the Entomology of N. America, i. 171-2 (Say, W. Q. R.); i, 203-4 (Say, Long’s 2d. Exp.); ii. 411-13 (Say, Journ. Acad. Nat. Se. Philad. 1839). 14 Rey. A. E. Haton’s Monograph 1860 (Walk.). F. Walker, Characters of undescribed Neuroptera in the collection of W. W. Saunders, Esq., F.R.S.; in Trans. Ent. Soc. Lond. N. S. vol. v. pp. 198-9. EH. dislocans. Pot. exspectans. Pal. continua, annulifera. (Cloeon) debilis. [The types, now in the British Museum, are E. pisuocans, Leptophlebia, 1 g im.; P. exsprorans, Ephemera, 1 9 subim.; P. continua, Hexagenia albwvitta, 1 2 im.; P. annunireRa, Heptagenia, 1 9 im.; C. DEBILIS, Baetis, 1 9 im.] 1860 (Kolen.). F. A. Kolenati, Einige neue Insekten-Arten von Alt- vater ; in Wien. Ent. Monatschrift, iv. 383. Ba. iridana. 1860 (Hag.). H. A. Hagen, Examen des Névroptéres (non Odonates) recueillis en Sicile par E. Bellier de la Chavignerie ; in An. Soe. Ent. Fr. 3 ser., vill. 746. Ba. Bellieri. [The type in M. de Selys-Longchamps’ collection is B. Benurer1, Hepta- genia, 1 2 im.] 1861 (Hag.). H. A. Hagen, Synopsis of the Neuroptera of N. America, with a list of the §. American species; in Smithsonian Miscellaneous Collections, pp. 38-55. EH. pudica. Pal. Hecuba, decolorata. Ba. ignawa, (Cloe) mollis, pygmea, vicina. Ce.amica. [Ba. tessellata and Cloe wnicolor are paronyms. | [The types in the collection of M. de Selys-Longchamps are :—P. HE- cuBA, Huthyplocia, 1 9 im.; B. vicaria,Heptagenia lwridipennis, 1 g im. ; C. motuis, Leptophlebia, 1 6 im.] 1861, F. Loew, Beitrige zur Kenntniss der Orthopteren; in Verh. zool.-bot. Gesells. Wien, xi. 409-10. 1862, B. D. Walsh, List of the Pseudo-Neuroptera of Illinois contained in the cabinet of the writer, &c.; in Proc. Acad. Nat. Se. Philad. pp. 367-81. Ba. sicca. Pot. odonatus. Pal. vittigera, flavescens, pulchella, terminata. EH. flaveola. Ephemerella excrucians, consimilis. Betisca (obesa, Say). (Cloe) ferruginea, fluctuans, dubia, mendac. [The types sent by the late Mr. Walsh to me were :—i. PENTAG. VITTI- GERA, 1 ¢ im.; ii. Hexac. prmpatTa, 1 ¢ im.; iii. HEPTAG FLAVESCENS, 1 g im.; iv.-vii. Barisca opesa, 4(gim., 2 im., g subim., ¢ pupal , shell) ; viii. ix. EpHEMERELLA ExcRucians, 2 EH. invaria, g im. The Roman numerals denote those on the tickets affixed to the types in the British Museum.} 1863 (Hag. & Walsh). Observations on certain N. American Neuroptera, by H. A. Hagen; with notes and descriptions of new species of N. American Pseudo-Neuroptera, by B. D. Walsh ; in Proce. Ent. Soc. Philad. ii. 169-179 (Hag. Obs.) ; and ii. 188-207 (Walsh, Notes). Cenis nigra (undescribed). Pentagenia; Hexagenia; Heptagenia. Pentag. quadri- punctata. Heptag. simplex, cruentata, maculipennis. EH. myops. 1863 (Hag. Brit. Syn.). H. A. Hagen, Synopsis of the British Hphe- meride; in Entomologist’s Annual, pp. 1-35. 1863, J. Lubbock, On the development of Chlocon [Ephemera] dimidia- tum, Part 1; in Trans. Lin. Soc. Lond. xxiv. 61-78, pls. xvii-xviii. 1864, B. D. Walsh, On the pupa of the Ephemerinous genus Betisca ; in Proc. Ent. Soc. Philad. pp. 200-6. 1864, J. F. Stein, Beitrag zur Neuropteren-Fauna Griechenlands ; in Berlin. Ent. Zeit. vii. 411. Pot. Krueperi. 1864 (Meyer). LL. R. Meyer-Diir, Zusammenstellung der auf meiner Reise durch Tessin und Ober Engadine, &c.; in Mitth. Schw. Ent. Ges. i. 219-21. Ba. Picteti. on the Bphemeride. 15 1864 (Hag.). H. A. Hagen, Névroptéres (non Odonates) de la Corse, &e.; in An. Soc. Ent. Fr. ser. 4, vol. iv. pp. 38-9. Ba. fluminwm, var. ? fallan, zebrata. Pot. modestus. [In the collection of M. de Selys-Longchamps are Dr. Hagen’s types of B. rtuminum, Hept. zebrata, 1 g im.; B. rauuax, 1 zebrata, g subim.; B. ZEBRATA, 1 ¢ subim.,1 2 im.; B.vEnosa, 1 subim., 1 2 im.; P. mopzs- tus, 1 Leptophlebia, g im., and 1 B. Rhodani, 2 subim.; C. puma, 1 B. 2 subim.; C. Ruovanr, 1B. g im.; C. prprera, 2 Cloeon, ¢ im.] 1865 (Hag.). H. A. Hagen, The Neuroptera of Madeira; in The Ento- mologist’s Monthly Magazine, i. 25-6. (Cloe) maderensis. {In Mr. Wollaston’s collection (Brit. Mus.) are C. piprmra, 2 Cloeon, 2 im.; C. mapprensis, B. Rhodani, § 4im., 9 2 im., 1 subim.] 1865 (Ed. Pict.). A. E. Pictet, Synopsis des Névroptéres d’Espagne, pp. 22-6, pl. iii. Ba. flavida, sylvicola. {In M. Ed. Pictet’s collection were B. Fuavipa, Siphlurus, g im.; B. SYLVICOLA, Heptagenia, g im., named; and Ephemerella ignita, g im., from San Ildefonso, unnamed.] 1865 (A. Miil.). A. Miller, Observations on the habits of Oligonewria rhenana; in Ent. Mo. Mag. i. 262. 1865 (Etn.). A. EH. Eaton, Occurrence of the female imago of Cloeon under submerged stones ; in Ent. Mo. Mag. ii. 14. (Baetis.) 1865, Lubbock (see 1863), Part. II, in Trans. Lin. Soe. xxy. 477-92, pl. lyiii—lix. 1865, W. Houghton, Ephemera, the May Fly; in The Intellectual Ob- server, vi. 147-54, pls. i, ii. 1866, Tuffen West, Description of the Skin cast by an Ephemeron in its Pseudimago condition; in Trans. Microscop. Soc. Lond. xiy. 69-70, pl. vii. 8-11. 1866 (A. Mul.). A. Miller, Further Notes on Oligoneuria rhenana ; in Ent. Mo. Mag. ii. 182. ° 1866, F. Loew, in Verh. zool.-bot. Ges. Wien, xvi. 947. 1866 (Htn.). A. E. Eaton, On some species of the Orthopterous genus Cloeon, Leach, (as limited by M. Pictet); in Ann. & Mag. Nat. Hist. ser. 3, vol. xvili. pp. 145-8 (illustrated). Cloeopsis. 1867 (Etn.). A. E. Eaton, On some British Neuroptera; in Ann. & Mag. Nat. Hist. ser. 3, vol. xix. p. 401. *1867, M. T. Ratzel; in Zeitsch. f. wiss. Zool. xviii. 99. [On the egg of an Ephemerid.} 1867 (Oul.). B. Oulianine, (in Russian), Neuroptera and Orthoptera of the province of Moscow, pp. 25-9. 1868 (M’Lach.). R. M’Lachlan, On a new species belonging to the Ephemerideous Genus Oligonewria; in Ent. Mo. Mag. iv. 177-8. 0. Tri- meniana, [The typeis1 2 im., in Mr. M’Lachlan’s collection.] *1868, H. Gernacher, Beitriige zur Kenntniss des Eies der Epheme- riden; in Zeits. f. wiss. Zool. xix. 95. 1868 (Brau. Ver.). F. Brauer, Verzeichniss der bis jetzt bekannten Neuropteren im Sinne Linné’s; in Verh. zool.-bot. Gesellsch. Wien, XViil. 361, 363, 387-9. 1868 (Brau. Reise Novara). F. Brauer, Reise der Fregatte Novara, Zool, Theil, Bd. ii. Abth. i. 104. [A list.] 16 Rev. A. E. Haton’s Monograph 1868, B. D. Walsh, The Bug-hunter in Egypt (S. Illinois); in The American Entomologist, i. 6, fig. i. b. ¢. 1868 (Hag.). H. A. Hagen, On Lachlania abnormis, 1 new Genus and Species from Cuba, belonging to the Ephemerina; in Proc. Boston Soc. Nat. Hist. pp. 372-4, fig. 1868 (Etn.). A. E. Eaton, in Trans. Ent. Soc. Lond. 1868, p. 142. Ecdyonurus (misreading for Ecdywrus). 1868 (Etn.). A. EH. Eaton, An outline of a re-arrangement of the genera of Ephemeride; in Ent. Mo. Mag. v. 82-91. Tricorythus, Campsurus, Polymitarcys, Coloburus, Siphlurus (mis-spelt Siphlonurus). 1868 (EKtn.). A. E. Eaton, On some points in the anatomy of the immature Canis macrura of Stephens; in Trans. Ent. Soc. Lond. 1868, pp. 279-82. 1869 (Ausser. Neur. Tirol.). C. Ausserer, Neurotteri Tirolesi; in Annu- ario della Soc. Natur. Modena, An. iy. 131-7. 1869 (Etn.). A. E. Eaton, On Centroptilum, a new genus of the Ephe- - meride; in Ent. Mo. Mag. vi. 1382. Centroptilum (luteolum). 1870 (Etn.). A. E. Eaton, On some new British species of Epheme- ride; in Trans. Ent. Soc. Lond. 1870, pp. 1-8. #. lineata. Cl. simile. Centropt. pennulatum. Ba. scambus, atrebatinus, pheops, tenax, bucera- tus, niger. Siphl. armatus, lacustris. Heptag. volitans, insignis. 1870 (Etn.). A. E. Eaton, A Catalogue of British Neuroptera. [The Fam. Ephemeride]. Pp. 7-11. [A mere list.] 1871 (Htn.). A. H. Haton. In this present monograph I describe the following new genera and species. (Campsur.) cuspidatus, quadriden- tatus ; Asthenopus curtus; (Polymit.) Savignii; Huthyplocia; (Ephem.) immaculata, serica; (Leptophl.) furcifera, inconspicua, dentata, strigata, nodularis, awriculata, mollis; (Centropt.) stenopteryx ; (Baetis) finitimus, amnicus, pictus; (Siphl.) Linneanus; Isonychia manca; (Colobur.) ha- leuticus; Cronicus; (Heptag.) nivata, borealis, cupulata, alpicola: in all, four new genera, twenty-four species. [The types of new species described in (Etn. 1870) and (Etn. 1871) are in the following collections :— In Mr. Wormald’s, S. armatus; in Linné’s, S. Linneanus; in Mr. Walker’s, L. furcifera, C. haleuticus; in Mr. Dale’s, C. 4-dentatus, S. Lin- neanus, H. borealis; in M. de Selys-Longchamps’, C. cuspidatus, Huthy- plocia, L. mollis; in the Oxford Museum, EF. immaculata, L. inconspicua; in Mr. McLachlan’s, P. Savignit, Euthyplocia, L. strigata, nodularis, auriculata, mollis, C. stenopterya, B. pictus, I. manca, S. armatus; the rest are in the British Museum.] Nominibus homonymicis signa anteposita significant :— || nomen preoccupatum. tT nomen abusum. Signo ! nomini auctoris premisso, me exemplar typicum insecti sui vidisse, significatur. Ante nomina generum numeralia loca systematica generum designant. on the Ephemeride. 17 INDEX SPECIERUM, Operibus supra enumeratis descriptarum. LV. ASTHENOPUS, n. g.—=Palingena, auct., p- Typ. A. curtus. curtus,! nov. sp.; in Palingenia, Hag., Campsurus, Etn. [not described] ; = og im. _ dorsalis, Burm.; in Palingenia, Burm. XX. Banris, Leach, 1815; Sam. 1819; Etn. 1868. Typ. B. binoculatus. t Baetis, Say, Curt., et auct., p.=Heptagenia, &e. albivitta, ! Walk. Cat. 566; Hag. Am. Syn. 304, list; =Hevagenia., 3 im. albus (alba), Say, Long’s 2d Exp. ii. 305; Le Conte, rep. 1. 204; Walsh, Proc. Ent. Soe. Philad. ii. 170, 193, Note 12, in Cloe (A.); in Palingenia, Hag. 9. : alpinus, Pict.; in Cloe, Pict.: Clogon, Walk. a alternata, Say, Long’s 2d Exp. ii. 304; Le Conte, rep. i. 203; Hag. Am. Syn. 49; Walsh. Proc. Acad. Nat. Se. Philad. 1862, p. 369, & Proc. Ent. Soc. Philad. ii. 169, 189=Siphlurus. anvnicus, ! nov. sp. angulata, ! Walk. Cat. 564=Hezxagenia bilineata, g im. angustipennis, ! Ramb. in Ephemera; Ed. Pict. Nevr. d’Esp. 23 = Hepta- genia, 2 subim. annulata, Pz., in Ephemera ;— indeterminable. || annulata, ! Walk. Cat. 567; Hag. Am. Syn. 48=Siphlurus; g im. anomata, Pict. Trait. de Pal. ed. 2, ii. 871; Hag. Verh. zool.-bot. Ver. Wien, 1854, p. 227; Hag. & Pict. Org. Rest. im Bernst. ii. 75, pl. vi. 1, b. c. = Cronicus, g im. arida, Say, Journ. Acad. Nat. Se. Philad. viii. 42 ; Walk. Cat. 562; Le Conte, rep. ii. 412; Hag. Am. Syn. 46; Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 370, & Proc. Ent. Soc. Philad. ii. 170, 191, Note 8, 192, Note 11=Siphlurus. atrebatinus, ! Etn. Trans. Ent. Soc. 1870, p. 4, 3. aurantiaca, Burm. Handb. ii. 801; Her.-Schef. 346; Pict. Ephem. 191 ; Walk. Cat. 560—=Heptagenia iridana ? australasica, Pict. Ephem. 189, pl. xxiv. 1,2; Walk. Cat. 559 = Lepto- phlebia, g. autumnalis, Curt. Phil. Mag. 1834, p. 121; Ste. Ill. vi. 67 = [probably a monstrous ¢] binoculatus. basalis, ! Walk. Cat. 565 (nec Ste. Cat.); Hag. Am. Syn. 50 =Heptagenia, 3 im. Bellieri, ! Hag. An. Soe. Ent. Fr. 1860, p. 746=Heptagenia, 9 im. bilineata, Say, Long’s 2d Exp. ii. 303; Le Conte, rep. i. 2083=Hezxagenia, éo im. binoculatus (bioculata), Lin., in Ephemera, Lin.; Leach, E. Ene. ix. 137 ; Sam. E. Comp. 259, Ent. Cab. ii. n. 53, pl. xxiv. 1; Ste. Il. vi. 65. buceratus, ! Etn. Trans. Ent. Soc. 1870, p.5; ¢ im. canadensis, |! Walk. Cat. 569; Hag. Am. Syn. 47=Heptagenia, g im. TRANS. ENT. soc. 1871.—parri. (MARCH.) C 18 Rev. A. E. Eaton’s Monograph Barris (continued). cornea, Curt. 1.1 Mag, 1884, p. 121; Ste. Ill. vi. 65; Pict. Ephem. 193; Walk. Cat. 560 ; »-Aeterminable. cered, Pict. Ephem. 183, pl. xxiii. 2; Wak. Cut FE°—Montagenia flavi- pennis, g im. cingulata,! Ste. Ill. vi. 67=Leptophlebia fusca, § im. costalis, Curt. Phil. Mag. 1834, p. 120; Ste. Ill. vi. 64; Pict. Ephem. 194; Walk. Cat. 561—Heptagenia elegans (2 im. s.s., Curt. ; é im.,! Ste.). || costalis, Burm. Handb. ii. 800; Brau. Reise Novara (1868) = Lepto- phlebia, subim. culicifornus, Lin.; in Ephemera, Lin.; sp. dub. t culiciformis, ! Ste. Il. vi. 66=pheops, f im. cyanops, Pict. Ephem. 171, pl. xx.2; Walk. Cat. 556 = Heptagenia elegans, g im. debilis, ! Walk. Cat. 569; Hag. Am. Syn. 46=Leptophlebia cupida, ? im. || debalis, ! Walk.; in Cloeon, Walk.=Baetis, 9 im. t debilis, Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 871; Proe. Ent. Soe. Philad. ii. 170; (in Baetis [C], Walsh)=Siphlurus ? determinata,! Walk. Cat. 567 =Heptagenia, g im. dispar, Curt. Phil. Mag. 1834, p. 120; B. HE. xi. 484; ! Ste. Ill. vi. 68= Heptagenia venosa, g im. elegans, Curt. Phil. Mag. 1834, p. 120;! Ste. Ill. vi. 64; Pict. Ephem. 193; Walk. Cat. 560; Hag. Brit. Syn. 25= Heptagenia. fallaw,! Hag. An. Soc. Ent. Fr. 1864, p. 88 =Heptagenia zebrata, g subim. fasciatus, Pict.; in Cloe, Pict.; Cloeon, Walk. femorata, Say, W. Q. R. ii. 162; Le Conte, rep. i. 171; Hag. Am. Syn. 48; Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 368, & Proc. Ent. Soc. Philad. ii. 169, 188, Note 6=Siphlurus. ? ferrugineus, Walsh; in Cloe (A), Walsh; ¢ im. jinitimus,! nov. sp. flaveola, Pict. Ephem. 186, pl. xxiii. 4; ! Walk. Cat. 559; Hag. Am. Syn. 44—Heptagenia; 9 im. Pict., 2 subim. & im. Walk. flavescens, Curt. Phil. Mag. 1834, p. 121; Pict. Ephem. 193; Walk. Cat. 561; probably binoculatws, subim. flavida, ! Ed. Pict. Nevr. d’Hsp. 24, pl. iii. 1-6=Siphlurus, im. fluctuams, Walsh ; in Cloe (B), Walsh. fluminum, Pict. Ephem. 164, pl. xvi.-xix.; Lab. & Imh., Bd.iv.; Walk. Cat. 556; Brau. N. Aust. 26; Meyer-Diir, Mitt. Schw. Ent. Ges. i. 221; Ausser. Neur. Tirol. 1384=Heptagenia. t fuminum,! Hag. An. Soc. Ent. Fr. 1864, p. 38; Stet. Ent. Zeit. xxvi. 229 (list) =Heptagenia zebrata, § im. forcipula, Pict. Ephem. 169, Note=Heptagenia venosa ?, g im. fusca, Burm. Handb. ii. 800; Her.-Scheef. 346; Sieb. Beitr. xii. 3; [imis- printed fusa, Walk. Cat. 541, in synon.]—=Leptophlebia vespertina. || fusca, ! Walk. Cat. 568; Hag. Am. Syn. 45= Heptagenia, im. fuscata, Lin., in Ephemera; ! Ste. Ill. vi. 66=binoculatus, g im. on the Ephemeride. 19 Baetis (continued). i| fuscata, ! Walk. Cat. 570; Hag. Am. Syn. 47=Ephemerella invaria, im. ¢, & subim. ? || fuscus, Schn. ; in Cloe, Schn. gigantea, Hag. & Pict. Org. Reste im Bernst. ii. 75; incerte sedis. grossa, Hag. & Pict. Org. Reste im Bernst. ii. 75; incerte sedis. guttata, Pict. Ephem. 187, pl. xxiv.3; Walk. Cat. 559= Heptagenia, 2 im. horaria, ! Ste. Ill. vi. 66; a Cloeon, 9 subim., indeterminable. ignava, ! Hag. Am. Syn. 47=Leptophlebia cupida, 2 subim. ignota, ! Walk. Cat. 571=Isonychia, g im. interlineata, Walsh, Proc. Ent. Soc. Philad. ii. 188; [for Siphlwrus femoratus, Walsh, if distinct from S. femoratus, Say]. interpunctata, Say, Journ. Acad. Nat. Se. Philad. viii. 41; Pict. Ephem. 194; Walk. Cat. 562; Le Conte, rep. ii. 411; Hag. Am. Syn. 44= Heptagenia. invaria, ! Walk. Cat. 568; Hag. Am. Syn. 48=Hphemerella, g im. tridana, Kolen. Wien. Ent. Monatschr. iv. 383= Heptagenia. lateralis, Curt. Phil. Mag. 1834, p. 121; ! Ste. Ill. vi. 65; Pict. Ephem. 175, pl. xxi.; Walk. Cat. 557; Hag. Brit. Syn. 28= Heptagenia. longicauda, ! Ste. Ill. vi. 63; Pict. Ephem. 193; Walk. Cat. 560= Hepta- genia. t longicauda, Hag. Brit. Syn. 24= Heptagenia flavipennis, 2 im. t longicauda, ! Ronalds, ed. v. pl. ix.=Heptagenia venosa, 9 im. longipes, Hag. Verh. zool.-bot. Ver. Wien, 1854, p. 7; Hag. & Pict. Org. Rest. im Bernst. ii. 76; incerte sedis. luridipennis, Burm. Handb. ii. 801; Pict. Ephem. 192; ! Walk. Cat. 563, ¢ im.; Hag. Am. Syn. 49= Heptagenia. lutea, Hag. Brit. Syn. 23= Heptagenia elegans. luteolus, Mil. ;in Ephemera, Mil. ; ! Kin. Ent. Mo. Mag. v. 88= Centroptilum. marginalis, Burm. Handb. ii. 801; Her.-Schef. 346; Sieb. Beit. xii. 3 ;— description= Heptagenia elegans ? — [reference = Potamanthus luteus ? ] melanonyx, Pict. ; in Cloe, Pict. ; Cloeon, Walk. mellea, Curt. Phil. Mag. 1834, p. 121= Potamanthus luteus, subim. montana, Pict. Ephem. 172, pl. xx. 3; Walk. Cat. 557; Brau. N. Aust. 26; Ausser. Neur. Tirol. 184=Heptagenia, g im. t? montana, Hag. Brit. Syn. 26= Heptagenia insignis, im. niger (nigra), Lin.; in Ephemera, Lin.; Ste. Ul. vi. 67; (Ronalds, ed. i. pl. ix. 16-17 [? 17, type] ) ; !Htn. Trans. Ent. Soc. 1870, p. 6. || nigra, Hag. Stet. Ent. Zeit. xxvi. 229=Heptagenia ? noveboracana, Licht.; in Ephemera, Licht.; Hag. Am. Syn. 50 = Hepta- genia luridipennis ? obesa, Say, Journ. Acad. Nat. Sc. Philad. viii. 43; Pict. Ephem. 195 ; Walk. Cat. 563; Le Conte, rep. li. 412; Hag. Am. Syn. 45= Beetis- ca, subim. obscura, ! Ste. Ill. vi. 65; Walk. Cat. 558=Ephemerella ignita, 9 im. tobscura, Hag. Brit. Syn. 27; ? Pict. Ephem. 152, pl. xxiii. 1= Heptagenia lateralis, ¢ im. c2 20 Rey. A. E. Haton’s Monograph Barris (continued). pheops, | Ktn. Trans. Ent. Soc. 1870, p. 4. pictus, | noy. sp. Picteti, Meyer-Diir, Mitt. Schw. Ent. Ges. i. 221= Heptagenia, subim. posticatus, Say ; in Cloeon, Say ; Cloe, Hag. ‘ procellaria, Fuessly, in Ephemera; Hag. Stet. Ent. Zeit. xxvi. 229; sp. incert# sedis. propinquus, Walsh ; in Cloe (B), Walsh. pumilus, Burm.; in Cloe, Burm.; Cloeon, Walk. purpurascens, Pict. Ephem. 174, pl. xx. 4; Walk. Cat. 557; Brau. N. Aust. 26; Ausser. Neur. Tirol. 185= Heptagenia venosa ? pygmeus, Hag.; in Cloe, Hag. remota, Walk. Cat. 564=Coloburus humeralis, im. reticulata, Burm. Handb. ii. 801; Her.-Schef. 346; Pict. Ephem. 192; Sieb. Beit. xii. 3; Walk.. Cat. 561= Leptophlebia helvipes, subim. ? Rhodani, ! Pict.; in Cloe, Pict. ; Cloeon, Walk. scambus, ! Etn. Trans. Ent. Soc. 1870, p. 3. scita, ! Walk. Cat. 570= Leptophlebia. semicolorata, Curt. Phil. Mag. 1834, p. 121; ! Ste. Tll. vi. 64, pl. xxix. 2, é im.; Pict. Ephem. 178, pl. xxii. 4-9; Walk. Cat. 557 ; Hag. Brit. Syn. 26=Heptagenia. semitincta, Pict. Ephem. 180, pl. xxii. 1-3; Walk. Cat. 558; Brau. N. Aust. 26; Ausser. Neur. Tirol. 183; (misprinted semitireta in Hag. Uebers. 368)—Heptagenia semicolorata, var. ? ? sicca, Walsn, Proc. Acad. Nat. Se. Philad. 1862, p. 371, Proc. Ent. Soc. Philad. ii. 170, 191, Notes 9, 10, 192, Note 11=Siphlurus. speciosus, Pod.; in Ephemera, Pod.; sp. incerta. straminea, Curt. Phil. Mag. 1834, p. 121=Heptagenia elegans, subim. sicca. striata, | Ste. I. vi. 65=pheops, 9. subfusca, | Ste. Ill. vi. 64; Pict. Ephem. 194; Walk. Cat. 561= Heptagenia longicauda, 9 im. sulphurea, Pict. Ephem. 185, pl. xxiii. 3; Walk. Cat. 558; Ausser. Neur. Tirol. 134= Heptagenia elegans, g im.? sylwicola, ! Kd. Pict. Nevr. d’Esp. 24, pl. iii. 7-12 = Heptagenia, im. Taprobanes,! Walk. Cat. 567; Hag. Ceyl. Syn. 476=Leptophlebia, g im. tena, ! Ktn. Trans. Ent. Soc. 1870, p.5; ¢ im. tessellata, | Walk. Cat. 566= Heptagenia vicaria, 9 subim. ? || tessellata, Hag. Am. Syn. 50 = either a Heptagenia, or Leptophlebia Co- lombie, ? subim.; (preserved in alcohol). torrida, ! Walk. Cat. 571-=Heptagenia, 9 im. undatus, Pict.; in Cloe, Pict.; Cloeon, Walk. unicolor, Hag.; in Cloe, Hag. venosa, ! Ste. Ill. vi. 63; Burm. Handb. ii. 801; Her.-Schef. 346; Pict. Kphem. 167, pl. xx. 1; Sieb. Beit. xii. 3; Walk. Cat.556; Brau. N. Aust. 26; Hag. Brit. Syn. 22; Meyer-Diir, Mitt. Schw. Ent. Ges. 1.221; ! Hag. An. Soc. Ent. Fr. 1864, p. 38; Oul. 1867, p. 27; Ausser. Neur. Tirol. 1833= Heptagenia. on the Hphemeride. 21 Baetis (continued). verna, ! Ste. Ill. vi. 66=pheops. vernus, Curt. Phil. Mag. 1834, p. 121l=pree.? ? verticis, Say, Journ. Acad. Nat. Sc. Philad. viii. 42; Walk. Cat. 562 Le Conte, rep. ii. 412; Hag. Am. Syn. 46; Walsh, Proc. Ent. Soe. Philad. ii. 204, Note 19. vicaria, ! Walk. Cat. 565; Hag. Am. Syn. 48=Heptagenia, g im. zebrata, ! Hag. An. Soe. Ent. Fr. 1864, p. 88= Heptagenia, g subim. ? im. XVII. Barisca, Walsh ; in Baetis, Say. Typ. B. obesa. obesa, Say, in Baetis, Say; ! Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 878; Proce. Ent. Soe. Philad. ii. 187, iii. 200-6, fig. Bracuycercvs, Curt. (1834)=Cenis, Ste. (1835-6), p. chironomiformis, Curt. Phil. Mag. 1834, p. 122=Cenis. Harrisella, Curt. ib.; (Har. Exp. pl. vi. 1-3) =Cenis luctuosa, ? , ? minima, Curt. ib.=Cenis dimidiata ? BracHypuuesBia, Westw. (1840) =Baetis, Leach (1815). bioculata,! Westw. Intr. ii. 25, Add. to Gen. Syn. 158=Baetis binocu- latus, g im. XV. Canis, Ste. (1835-6); in Ephemera, Lin.; Brachycercus, Curt. ; Oxycypha, Burm. Typ. C. macrura. amica, Hag. Am. Syn. 55=diminuta, g im. ? argentata, Pict. Ephem. 279, pl. xliii.6; Walk. Cat. 581; 9 subim. brevicauda, ! Ste. Ill. vi. 61; Pict. Ephem. 286; Walk. Cat. 582=dinu- diata, 2 im. chironomiformis, Curt. in Brachycercws; ! Ste. Ill. vi. 62; 2 im. (mis- printed chironoformis, Hag. Brit. Syn. 11, in synon.). dimidiata, ! Ste. Ill. vi. 61; Pict. Ephem. 286; Walk. Cat. 582; Hag. Brit. Syn. 12; Oul. 1867, p. 27; im. diminuta, ! Walk. Cat. 584; Hag. Am. Syn. 55; ¢ im. discolor, Burm.; in Oxycypha, Burm. grisea, Pict. Ephem. 278, pl. xlv. 1,2; Walk. Cat. 581; Brau. N. Aust. 25; Ausser. Neur. Tirol. 133=macrura. halterata, Hag. Brit. Syn. ll=chirononuformis. t halterata,! Etn. Trans. Ent. Soc. 1868, pp. 279, 280, 281=luctuosa, od im. & nymph. Harrisella, Ste. Ill. vi. 61; Pict. Ephem. 286; Walk. Cat. 583=Jluc- tuosa, 9. hilavis, Say; in Ephemera, Say; Walk. Cat. 583; Hag. Am. Syn. 54; Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 381, Proc. Ent. Soe. Philad. ii. 179. interrupta, Ste. Ill. vi. 62; Pict. Ephem. 287 ; Walk. Cat. 583=macrura, ? . lactea, Burm.; in Oxycypha, Burm.; ! Pict. Ephem. 276, pl. xliu. 1-4 & xliv.; Walk. Cat. 581; Hag. Stet. Ent. Zeit. xxvi. 229=chirono- miformis. luctuosa, Burm.; in Oxycypha, Burm.; Pict. Ephem. 283, pl. xlv. 3; Walk. Cat. 582; Hag. Stet. Ent. Zeit. xxvi. 229. macrura, Ste. Ill. vi. 60, pl. xxix. 1; Walk. Cat. 583; Hag. Brit. Syn. 10;! Etn. Trans. Ent. Soc. 1868, pp. 279-82. 22 Rev. A. E. Eaton’s Monograph Canis (continued). [nigra, Hag. MS., Walsh, Proc. Ent. Soc. Philad. ii. 179; not described. } oophora, Pict. Ephem. 284, pl. xlv. 4; Walk. Cat. 582; 92 im. pennata, ! Ste. Ill. vi.61; Pict. Ephem. 286; Walk. Cat.588=dimidiata, ? . perpusilla, ! Walk. Cat. 585; Hag. Ceyl. Syn. 477; ¢ im. sinensis, ! Walk. Cat. 584=Cloeon russulum, & im. varicauda, (Say. 1817, pl. ii. 6, 7), Pict. Ephem. 281, pl. xliii.5; Walk. Cat. 581=Tricorythus, g im. ¢. Ill. Camrsurus, Etn. 1868; in Ephemera, Perch.; Palingenia, auct. Typ. C. latipennis. albicans, Perch. ; in Ephemera, Perch.; Palingenia, Pict.; ¢ im. albifilum, ! Walk. ; in Palingenia, Walk.; g im. curtus, ! Htn. Ent. Mo. Mag. vy. 84 [not described] =Asthenopus, g im. cuspidatus, ! nov. sp., ¢ im. latipennis, ! Walk.; in Palingenia, Walk.; g im. ? puella, Pict.; in Palingenia, Pict.; 9 im. quadridentatus, ! noy. sp., ¢ im. XIX. Crntrroptinum, EHtn. 1869; Baetis (A), Hin. 1868. Typ. C. lu- teolum. lituratwm, Pict. ; in Cloe, Pict.; Cloeon, Walk. luteolum, Miil.; in Ephemera, Miil.; Baetis, Etn. 1868; !Etn. Ent. Mo. Mag. vi. 132. pennulatum, |! Etn. Trans. Ent. Soc. 1870, p. 2. stenopteryx, ! nov. sp. Cuuoron, Lubbock (1863)=Cloeon, Leach (1815). dimidiatum, Lub. Trans. Lin. Soc. xxiv. 61-7, pls. xvii-xviii; id. xxv. 477-95, pl. lviii-lix. 18 = Cloeon russulum. dipterum, Lub. lib. cit. xxv. pl. lix. 19-21=Cloeon dipterum. Croz, Burm. (1839)=Baetis & Cloeon, Leach, 1815, & Centroptilum, Etn. 1869. affinmis, ! Ramb. Nevr. 298=Cloeon dipterum, im. albipennis, ! Ste. in Cloeon; Pict. Ephem. 271—=Centroptitum luteolum, g im. alpina, Pict. Ephem. 257, pl. xl. 5=Baetis, g im. auliciformis, ! Ronalds, v. No. 25 [misprint for culiciformis] =Baetis, [sp. indeterminable] . autumnalis, Curt. in Cloeon; Pict. Ephem. 270; vide Baetis. bioculata, Lin., in Hphemera, L.; Pict. Ephem. 244, pl. xxxiv-v.; Hag. Am. Syn. 52 (teste Walk., sed vide Walk. Cat. 572), Stet. Ent. Zeit. xxvi. 229; Oul. 1867, p. 28= Baetis binoculatus. brunnea, ! Ramb. Nevr. 298; Walk. Cat. 577, var. ? halterata; Hd. Pict. Neyr. d’Esp. 26= Heptagenia lateralis, g subim. cingulata,! Ste. in Cloeon; Pict. Ephem. 271=Leptophlebia fusca, g im. cognata, | Ste. in Cloeon; Pict. Ephem. 272=Cloeon dipterum, 8 im. consueta, Hag. Ceyl. Syn. 477 ; incert. gen. (Gen. XXII). culiciformis, Lin., in Ephemera, L.; Pict. Ephem. 270; Hag. Am. Syn. 54= Baetis, sp. dub. dimidiata, Curt. in Cloeon; Pict. Ephem. 272=Cloeon russulum. on the Hphemeride. 23 Ciox (continued). diptera, Burm. Handb. ii. 798; Her.-Schef. 346; ! Pict. Ephem. 266, pl. xlii.; Schn. Stet. Ent. Zeit. vi. 340; Cal. (1848); Sieb. Beit. xii. 3; Brau. N. Aust. 26; !Hag. An. Soc. Ent. Fr. 1864, p. 39, and Ent. Mo. Mag. ii. 25; Ed. Pict. Nevr. d’Hsp. 25; Oul. 1867, p. 27; Ausser. Neur. Tirol. 185=Cloeon dipterwm. + diptera, Ronalds, v. No. 16=Baetis niger, subim. dubia, Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 380, Proc. Ent. Soc. Philad. ii. 178=Cloeon. fasciata, Pict. Ephem. 262, pl. xli. 4; Hag. Am. Syn. (list) 304= Baetis, Q im. ferruginea, Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 379=? Baetis, im., subim. fluctuans, Walsh, 1. c., & Proc. Ent. Soc. Philad, ii. 178=Baetis, 9 im. fusca, Schn. Stet. Ent. Zeit. vi. 340=? Baetis, 2 im. fuscata, Pict. Ephem. 251, pl.xl. 1; Oul. 1867, p. 28=Leptophlebia cincta, é im. halterata, Burm. Handb. ii. 798; Her.-Schef. 346; ! Ramb. Nevr. 299; (misprinted hatterata in Sieb. Beitr. xiii. 3)=Centroptilum luteolum, g im. horaria, Lin., in Ephemera, L.; Ramb. Nevr. 299; Pict. Ephem. 270; Oul. 1867, p. 29=? Cenis dimidiata. hyalinata, ! Ste., in Cloeon, Ste.; Pict. Ephem. 271=Centroptilwm luteo- ad lum, 2 im. Uitura, Pict. Ephem. 260, pl. xli. 1-3=Centroptilum. maderensis, ! Hag. Ent. Mo. Mag. ii. 25=Baetis Rhodant. marginalis, Hag. Ceyl. Syn. i. 477, ii. 206; incert. sed. (Gen. XXII, 2). melanonyx, Pict. Ephem. 258, pl. xl. 6= Baetis, g im. mendaz, Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 381, & Proc. Ent. Soe. Philad. ii. 178=Cloeon. mollis, ! Hag. Am. Syn. 52 [not described] =Leptophlebia, g im. obscura,! Ramb. Nevr. 297=Cloeon, 9 subim. oclvacea,! Ste., in Cloeon, Ste.; Pict. Ephem. 271=Centroptilum luteo- lum, 2 im. posticata, Say, in Cloeon, Say ; Hag. Am. Syn. 53=Baetis, g im. propingua, Walsh, Proc. Ent. Soc. Philad. ii. 207; [for vicina, Walsh] = Baetis. pumila, Burm. Handb. ii. 799; Her.-Schef. 346; Pict. Ephem. 253, pl. xl. 2; Sieb. Beit. xii. 3; Brau. N. Aust. 26; ! Hag. An. Soc. Ent. Fr. 1864, p. 39; Meyer-Dir, Mitt. Schw. Ent. Ges. i. 221; Ausser. Neur. Tirol. 136= Baetis. Tpumila, Hag., in Cloeon; Oul. 1867, p. 28=Baetis binoculatus. t pumila, ! Ramb. Nevr. 298=Cloeon russulum, g im. pygmea, Hag. Am. Syn. 54; Walsh, Proc. Ent. Soc. Philad. ii. 178 = Baetis, 2 im. Rhodani, ! Pict. Ephem. 248, pl. xxxvi-ix.; Brau. N. Aust. 26; ! Hag. An. Soe. Ent. Fr. 1864, p. 39; Meyer-Diir, Mitt. Schw. Ent. Ges. i. 221; ?, Oul. 1867, p. 28; Ausser. Neur. Tirol. 136= Baetis. 24 Rev. A. E. Eaton’s Monograph CuoE (continued). signata, Hag. Ceyl. Syn. i. 477, ii. 206; incert. gen. (Gen. XXII.) solida, Hag. Ceyl. Syn. i. 477; incert. gen. (Gen. XXII. 2). striata, Lin., in Ephemera, L. ; Pict. Ephem. 270; Oul. 1867, p. 28= Baetis pumilus,?; vide Ephemera. subinfuscata, ! Ramb. Nevr. 298; Walk. Cat. 577 (var. ? halterata) = Cloeon, 2 subim. translucida, ! Pict. Ephem. 255, pl. xl. 3, 4= Centroptilum luteolum, im. tristis, Hag. Ceyl. Syn. i. 476; incert. gen. (Gen. XXII, 2 subim.). undata, Pict. Ephem. 264, pl. xli.5; Hag. Am. Syn. 53=Cloeon?, g im. unicolor, Curt., in Cloeon, Curt.; Burm. Handb. ii. 798; Pict. Ephem. 271; Sieb. Beit. xii. 3=Cloeon, sp. dub. || wnicolor, Hag. Am. Syn. 54;? Walsh, Proc. Acad. Philad. 1862, p. 350, & Proc. Ent. Soc. Philad. ii. 178= Baetis. verna, Curt., in Cloeon, Curt.; Pict. Ephem. 270=Baetis pheops? vespertina, Lin., in Ephemera, L.; Oul. 1867, p. 29=Leptophlebia ? vicina, Hag. Am. Syn. 54; Walsh, Proc. Ent. Soc. Philad. ii. 178=Cloeon. f vicina, Walsh, Proc. Acad. Nat. Sc. Philad.,1862, p. 380, & Proc. Ent. Soc. Philad, ii. 207, Note 20=Baetis propinquus. virgo, ! Ste., in Cloeon, Ste.; Pict. Ephem. 272=Cloeon dipterum, g im. XVIII. Cxroxzon, Leach (1815); in Ephemera, Lin.; Cloe, Burm. p.; Cloeopsis, Etn., olim. Typ. C. dipterwm. t albipenne,! Ste. Ill. vi. 69; albipennis, Walk. Cat. 579=Centroptilum luteolum, 3 im. alpina, Pict., in Cloe; Walk. Cat. 574=Baetis. autumnalis, Curt., in Baetis, Curt.; Walk. Cat. 578; vide Baetis. bioculata, L., in Ephemera, L.; Walk. Cat. 572, 1 a-f=Baetis binoculatus. } bioculatwm, Hag. Brit. Syn. 34; !Etn. An. & Mag. Nat. Hist. 1866, p. 147 =Centroptilum luteolum. cingulata, Ste., in Baetis, Ste.; Walk. Cat. 578=Leptophlebia fusca, $ im. cognatwm,! Ste. Ill. vi. 69; cognata, Walk. Cat. 579=dipterwum, g im. consobrinum, ! Ste. Ill. vi. 69=dipterum, ¢ im. culiciformis,! Walk. Cat. 576= Leptophlebia helvipes, 2 im. debilis, ! Walk. Trans. Ent. Soc. N.S. v. 199=Baetis, 9 im. dimidiatum, Curt. Phil. Mag. 1834, p.121; Hag. Brit. Syn. 32; dimidiata, Walk. Cat. 5880=russulum. t dimidiatum, ! Ste. Ill. vi. 69=dipterum, S im. dipterwm, Lin., in Ephemera; Leach, E. Enc. ix. 187; Curt. Phil. Mag. 1834, p. 121; ! Ste. Ill. vi. 68, pl. xxix. 3; Hag. Brit. Syn. 29; diptera, Walk. Cat. 575. discolor, Burm., in Cloe; Walk. Cat. 577=Cenis. dubiwm, Walsh ; in Cloe (C), Walsh. fasciata, Pict., in Cloe; Walk. Cat. 575=Baetis ?. fuscata, Walk. Cat. 573= Leptophlebia cincta. halterata, Burm., in Cloe; Walk. Cat. 577=Centroptilum luteolum, gf im. horaria, Lin., in Ephemera, Lin. ; Walk. Cat. 576; vide Ephemera. on the Bphemeride. 25 Croxon (continued). hyalinatum, ! Ste. Ill. vi. 68; hyalinata, Walk. Cat. 579=Centroptilum luteolum, 2 im. litura, Pict., in Cloe; Walk. Cat. 574=Centroptilwmn. marmoratum, Curt. Phil. Mag. 1834, p. 121l=dipterwm, 2 im. melanonyx, Pict., in Cloe; Walk. Cat. 574=Baetis. mendaw, Walsh ; in Cloe (C), Walsh. obscurum, Curt. Phil. Mag. 1834, p. 12l=dipterum, subim. || obscurwm, ! Ramb.; in Cloe, Ramb.; 2 subim. ochracewm,! Ste. Ill. vi. 68; ochracea, Walk. Cat. 578=Centroptilum luteolum, 2 im. pallida, Leach, HE. Enc. ix. 187; Sam. E. Comp. 259=dipterum. posticata, Say, W. Q. R. ii. 162; Le Conte, repr. i. 172=Baetis, g im. pumila, Burm., in Cloe; Walk. Cat. 573= Baetis. t pumilum, Hag. Brit. Syn. 33; ! Etn. An. & Mag. Nat. Hist. 1866, p. 147 = Baetis binoculatus. Rhodani, Pict., in Cloe; Walk. Cat. 573; Hag. Brit. Syn. 31; ! Etn. An. & Mag. Nat. Hist. 1866, p. 147=Baetis. russulum, Miil.; in Ephemera, Mil. simile, ! Etn. Trans. Ent. Soc. 1870, p. 2. striata, Lin., in Ephemera; Walk. Cat. 576= Baetis pumilus ? subinfuscatum, ! Ramb.; in Cloe, Ramb.; ? subim. translucida, Pict., in Cloe; Walk. Cat. 574=Centroptilum luteolum. undata, Pict., in Cloe; Walk. Cat. 575=Baetis. unicolore, Curt. Phil. Mag. 1834, p.121; ! Ste. Ill. vi. 69; wnicolor, Walk. Cat. 579=sp. anceps. verna, Curt. Phil. Mag. 1834, p. 1217 ! Ste. Ill. vi. 69; ! Walk. Cat. 578= Baetis pheops, g im. vicinum, Hag.; in Cloe, Hag. virgo, ! Ste. Ill. vi. 70; Walk. Cat. 580=dipterum, g im. vitripennis, Blanch. ; in Ephemera (Cloe), Blanch. Cuoxorsis, Etn. (1866) =Cloeon, Leach. diptera, Kin. An. & Mag. Nat. Hist. 1866, p. 146=Cloeon dipterwm. diptera, var., Ktn. op. cit. 1867, p. 401=Cloeon russulum. XXIV. Coxozurvs, Etn. (1868); in Palingenia, Walk. Typ. C. hume- ralis. haleuticus, ! nov. sp., ¢ im. humeralis, ! Walk. ; in Palingenia, Walk. XXY. Cronicus, nov. gen. anomalus, Pict. ; in Baetis, Pict. Ecpyurvs, Etn. (1868); [mis-spelt Hedyonwrus] = Heptagenia. venosus, Fab., in Ephemera, Fab.; Htn. Trans. Ent. Soc. 1868, p, 141, n. X. Epuemera, Lin. 1735; Sam. 1819; Pict. 1843-5; Hag.; Brau.; Walsh; Houghton, 1865; Etn. = Ephemera, Lin. c. 3-set. p. Typ. E. vulgata. 26 Rev. A. E. Haton’s Monograph EprEemeEra (continued). albicans, Perch. vi. pl. iv. l=Campsurus, 9 im. albipennis, Retz. n. 181=Leptophlebia vespertina. || albipennis, Atk. Zool. i. 272-5=Cenis dimidiata. || albipennis, Fab. HE. §. III. i. 70= Leptophlebia cincta. t albipennis, Voigt, v. 310; Blanch. H. N. iti. 54, pl. iii. 1; Ramb. Nevr. 296= Polymitar cys virgo. { albipennis, Walck. ii. 9; Lat. H. N. xiii. 98? =Baetis culiciformis. albipes, Scop. E. Carn. 264; Vill. iii. 22; Ol. Enc. Meth. vi. 421=Cen- troptilum luteolum, g subim.? angustipennis, | Ramb. Névr. 295; Walk. Cat.571= Heptagenia, subim. ?. annulatd, Mil. Pr. 143=Cloeon dipterum. || annulata, Pz. Explic. Schef. Ic. clvi.= Baetis, sp. anceps. apicalis, ! Ste. Ill. vi. 59=Hphemerella ignita, g im. atrostoma, Web. 99= Hewagenia?, subim. australis, ! Walk. Cat. 5838= Leptophlebia. berolinensis, Mil. Pr. 143, n.= Heptagenia venosa ? bioculata, Lin. (Act. Ups. 27); (i. F. 8S. 751); x. 8. N. i. 547; i. F. S. 1473; (Geof. ii. 239.5, pl. xiii. 4); Mil. F. Frid. 556; Lin. xii. 8. N. 906; Georg. Bem. i. 190; Fab. 8. H. 304 & Sp. In. i. 384; Thunb. 81; Fab. Mant. i. 244; Vill. iii. 18; Gmel. 2629; Ol. Enc. Meth. vi. 419; Fab. E. 8. III. i.:70; Schr. F. B. II. ii. 199; Ced. 184; Walck. ii. 9; Lat. H. N. xiii. 97; Shaw, pl. Ixxxi.; Lam. ed. 1, iv. 221; Stew. *Hlem. II. ii. 225; Guer. Ic. ii. pl. lx. 9; Grif. ii. pl. xciv. 9; Zet. 1046; Westw. Intr. ii. 25; Blanch. H. N. iii. 54=Baetis binocu- latus. + bioculata, Foure. HE. Par. ii. 352=Baetis pheops, subim. ? + bioculata, Pz. Explic. Scheef. Ic. cexxix.= Heptagenia fluminum. + bioculata, var., Pz. Explic. Schef.*Ic. cexxix. & F. Germ. heft. xciy. 7 =Heptagenia elegans ? t bioculata, Rom. 23, pl. xxiv. 7=pree. ? brevicauda, Fab. BE. 8. III. i. 69; Walck. ii.9; Lat. H. N. xiii. 96; Zet. 1045=Cenis macrwra, 9 subim.? f brevicauda, Blanch. H. N. ii. 54=Cenis luetuosa. [cellulosa, Hag.= Dictyonewra. | chlorotica, ! Ramb. Névr. 296; Walk. Cat. 540=Potamanthus luteus, 3 subim. ; cincta, Retz. n. 182; (De G. Mem. ii. 650, pl. xvii. 17-18) = Leptophlebia. cognata,! Ste. Ill. vi. 56; Curt. B. E. xv. 708=danica. Colombia, ! Walk. Cat. 5837= Leptophlebia, 2 subim. communis, Retz. n. 180=vulgata. cwliciformis, Lin. (i. F. 8. 753); x. S. N. i. 547; ii. F. S. 1475; (Pod. Mus. Gr. 98, pl. i. 10, ?; or is this Leptophlebia marginata 7); Scop. E. Carn. 264; (Geof. ii. 240. 6); Lin. xii. S. N. 907; Fab. 8. E. 304; Mil. Pr. 143; Fab. Sp. In. 385 ; Thunb. 81; Foure. HE. Par. ii. 352; Fab, Mant. i. 244; Berk. Syn. i. 150; Vill. iii. 20; Gmel. 2630; Ol. Ene. Meth. vi. 420 (excl. note): Fab. £. 8. IIT. i. a Lat. H. N. xiii. 98, ?; Stew. Elem. II. ii. 225; Zet. 1046; Schi. Berl. E. Zeit. iii. 143= Baetis, sp. anceps. on the Hphemeride. 27 EPHEMERA (continued). ({t cwliciformis, Hill, Dee. pl. vii.= Perla.) t culiciformis, Ol. Enc. Meth. vi. 420, n.; Lat. H. N. xiii. 98? =Baetis binoculatus. t culiciformis, Blanch. H. N. iii. 55=Cloeon russulum. t culiciformis, Fonscol. An. Soc. Ent. Fr. 1846, p. 49=Cloeon dipterum. t culiciformis, Scop. E. Carn. 264=Centroptilum lituratum. cupida, Say, W. Q. R. ii. 163; Le Conte, rep. i.172— Leptophlebia. danica, Mil. F. Frid. 63, & Pr. 142; Vill. iii. 18; (Ronalds L., pl. xiii. 28-29); Walk. Cat. 535; Hag. Brit. Syn. 15. ft danica, Pict. Ephem. 130, pl. vii.; Oul. 1867, p. 26=Tineata. t danica, Ronalds V., No. 3l=vulgata. decora, ! Walk. Cat. 537; Hag. Am. Syn. 38; Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 376, & Proc. Ent. Soc. Philad. ii. 177=gut- tulata. diaphana, Mil. Pr. 143=Baetis binoculatus, 3. diluta, Ste. Ill. vi. 58= Ephemerella ignita. diptera, Lin. ii. F. 8. 1477; (Reaum. vi. pl. xlv.); (Pontop. Nat. Dan. 223, pl. xvii. ?); Lin. xii. S. N. 907, diag., nec obs.; (De G. Mem. ii. 656, pl. xviii. 1-9); Fab. 8. E. 304, & Sp. In.i. 385; Retz. n. 184; Thunb. 81; Fab. Mant. i. 244; Raz. 210; Vill. iii. 20; (Zsch. i. 51, No. 19); Gmel. 2680; Ros. F. Etr. ii. 9; Ol. Ene. Meth. vi. 420; Fab. H.8. 1.1.71; Schr. F.B. I1.ii.199; Lat. H. N. xiii. 99; Shaw, 253; Lat. Gen. iii. 184; Leach, E. Ene. ix. 137, inter syn.; Cuv. R. A. ed.i., iii. 480; Lamarck, ed. i., iv. 221; Sam. K. Comp. 259; Cuv. R. A. ed. ii., 244; Blanch. R. A. (ed. Cro- chard) xiii. 92; Zet. 1046; Voigt, v. 311; Blanch. H. N. iii. 55; Duf. Rech. 580, note; Lat. Nouv. Dict. H. N.x.349; Verl. Mem. 49, pl. i=Cloeon dipterwm. dislocans, |! Walk. Trans. Ent. Soc. N. 8. v. 198=Leptophlebia, 9 im. dispar, | Ste. Ill. vi. 58=Leptophlebia helvipes, im. & subim. dubia, ! Ste. Ill. vi. 59=Baetis pheops, g im. erythropthalma, Schr. F. B. II. ii. 197 =Ephemerella ignita, g im. exspectans, ! Walk.; in Potamanthus, Walk.; 2 subim. familiaris, Schr. F. B. II. ii. 200, indeterminable. fasciata, ! Hag.; in Potamanthus, Hag. ferruginea; (Zsch. i. 50, No. 18) ; Gmel. 2630 ; Ol. Ene. Meth. vi. 422— Heptagenia elegans ? Lfimbriata, Bremi, MS.; Hag. Stet. Ent. Zeit. xxvi. 229; not described.] flava, Schr. Beyt. 82, & En.n. 605; Vill. iii. 22; Ol. Ene. Meth. vi. 421; Schr. F. B. IL. ti. 200= Baetis binoculatus. flaveola, Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 377, & Proc. Ent. Soc. Philad. ii. 178. flavicans, ! Ramb. Névr. 296; Walk. Cat. 536, ? var.=Potamanthus lw- teus, @ im. flavipennis, Duf. Réch, 580, n. = Heptagenia, 2 subim. flosaque, Illig. Mag. i. 187; Triepke, Stet. Ent. Zeit. i. 54-8 = Palingenia longicauda. fuliginosa, Georg. (1802), p. 324=Palingenia longicauda. 28 Rey. A. EH. Haton’s Monograph EPHEMERA (continued). fusca, Curt. Phil. Mag. 1834, p. 120=Leptophlebia. t fusca, ! Ste. Ill. vi. 58=Ephemerella ignita, g im. fuscata, Lin. ii. F. 8. 1474; Mil. F. Frid. 557; Lin. xii. S. N. 907; Thunb. 81; Vill. iii. 19; Gmel. 2629; Ol. Ene. Meth. vi. 419; Fab. EK. 8. 111.i.70; Walck.ii.9; Lat. H. N. xiii. 97=Baetis binoculatus. fusco-grisea, Retz. n. 183= Heptagenia venosa, subim. fuscula, Schr. F. B. IL. ii. 199= Heptagenia semicolorata, subim. ? gemmata, Scop. E. Carn. 264; Mil, Pr. 143; Vill. iii. 22; Ol. Ene. Meth. vi. 421=Heptagenia, 2 incert. sp. [gigantea, Illig. Mag. i. 188; not described.] glaucops, ! Pict. Ephem. 132, pl. viii. 1-3; Walk. Cat. 536; Brau. N. Aust. 25; Hag. Brit. Syn. 16 (excl. Brit. subim.); Meyer, Mitt. Schw. Ent. Ges. i. 221; Oul. 1867, p. 26; Ausser. Neur. Tirol. 132. guttata, Blanch. Chili, v vi. 106, Atl. Névr. ii. 2; in § Baetis, Blanch.= Heptagenia, 2 im. guttulata, Pict. Ephem. 135, pl. viii. 4; Walk. Cat. 536. halterata, Fab. Gen. 244, & Sp. In. 384, & Mant. i. 248; Vill. iii. 18; Gmel. 2629; Ol. Enc. Meth. vi. 418; Fab. E. 8. III. i. 69; Schr. F. B. IL. ii. 198; Lat. H. N. xiii. 95; Shaw, pl. Ixxxi; Zet. 1045= Leptophlebia cincta? (supposing Fabricius’ speci- men to have been mutilated). Hebes, Walk. Cat. 5388; Hag. Am. Syn. 39 = Leptophlebia cupida? helvipes, ! Ste. Ill. vi. 59=Leptophlebia, 2 im. helvola, Sulz. Gesch. 171, pl. xxiv. 7; Roem. Gen. pl. xxiv. 7= Heptagenia elegans ? hilaris, Say, Journ. Acad. Nat. Sc. Philad. viii. 43; Le Conte, repr. ii. 413 =Cenis. hispanica, ! Ramb. Nevr. 294; Walk. Cat. 535 (vulgata, var. ?); EH. Pict. Nevr. d’Esp. 23=danica, ¢ im. horaria, Lin. (Act. Ups. 27; 1. F. 8. 754); x. 8. N. i. 547; ii. F. 8S. 1477; (Geof. ii. 240.8); Pontop. Nat. Dan. 223; Lin. xii. S. N 907; Fab. 8S. E. 304; Mil. Pr. 143; Fab. Sp. In. i. 358; Foure. E. Par. ii. 8352; Fab. Mant. i. 244; Berk. Synop. i. 150; Vill. iii. 20; Gmel. 2630; Ros. F. Etr.9; Ol. Ene. Meth. vi. 419; Fisch. Vers. 566; Fab. E. S. III. i. 71; Schr. F. B. II. i. 199; Ced. 185; Walck. ii. 10; Lat. H. N. xiii. 98; Stew. Elem. II. ii. 226 ?,=Cenis dimidiata ? hyalina, Pz. Expl. Scheef. Ic. xlii.= Potamanthus luteus. hyalinata, Zet. 1044= Leptophlebia cincta. ignita, Pod. Mus. Gr. 97=Ephemerella, § im. ammaculata, ! nov. sp., ¢ im. inanis (Zsch. i. 50, No. 15); Gmel. 2629; Ol. Enc. Meth. vi. 421= Lepto- phlebia cincta, g im. (the abdominal segments being counted from behind forwards). limbata, ! Guer. Ic. ii. pl. lx. 7, & iii. 384; Gray, Grif. Cl. Ins. ii. pl. xciv. 7; ! Ramb. Névr. 295, pl. viii. 2= Hexagenia, § im. (liamnobia and limosa, Zet. MS., for L. vespertina, Zet.] lineata, ! Etn. Trans. Ent, Sog¢, 1870, p. 1. on the Ephemeride. 29 EPHEMERA (continued). longicauda, 2 Ene. Meth. vi. 418; Lat. H. N. xiii. 96; Lamarck, ed. ., iv. 221; ! Ramb. Nevr. 295= Palingenia. lutea, Lin.; (Geof. ii. 238.2); Lin. xii. S. N. 906; Fab. S. E. 303; (? Schef. Ie. i. pl. xlii. 7); Schr. En. 603; Fab. Sp. In. i. 383, & Mant. i. 243; Vill. iii. 17; Rem. 23; (Zsch. i. 50, No. 14) ; Gmel. 2628; Ros. F. Etr. ii. 8; ‘Ol. Ene. Meth. vi. 417 ; Fisch. Vers. 565; Fab. E. 9. III. i. 68 ; Seetzen (1794) ; Schr. F. B. IL. ii. OT Walck. ii. 8; Lat. H. N. xiii. 95; Blanch. H. N. iii. 54; Dut. * Rech. 580, n.= Potamanthus luteus. ft lutea, Pz. Expl. Schef. Ic. clxxv.=Polymitarcys virgo. } lutea, Foure. E. Par. ii. 352=Baetis binoculatus. t lutea, Sulz. Gesch. 171, pl. xxiv.6; Roem. xxiv. 6; Burm. Handb. ii, 804; ! Ramb. Nevr. 294; Her. -Schef. 346; Sieb. Beit. xii. 3= glaucops, rina Ye t lutea, ! Ste. Ill. vi. 55=Heptagenia elegans, g im. luteola, Mil. Pr. 143=Centroptilwm luteolum, 9 im. maculata, Lin. v. S. N. 62= vulgata. || maculata, Pod. Mus. Gr. 97= Heptagenia (? venosa), subim. t maculata, Vill. iii. 22=H. danica, g im. [madritensis, ! Ramb. MS.= Heptagenia angustipennis, 9 im. ?] marginata, Lin. xii. S.N. 906; Fab. S. E. 303, & Sp. In. i. 384, & Mant. i. 243; Vill. iii. 17; Gmel. 2628; Ol. Ene. Meth. vi. 417; Fab. E. 8. IIT. i.69; Schr. F. B. II. ii. 198; Ced. 184; Walck. ii. 8; Lat. H.N. xiii. 95; Shaw, pl. lxxxi.; Stew. Elem. II. ii. 225, pl. xvii. 14, 15; ! Ste. Dll. vi. 57; Zet. 1044; Blanch. H.N. iii. 54=Leptophlebia, g im. t marginata, Mil. Pr. 142= Potamanthus luteus ? t marginata, Gor. & Prit. 61-9, pl. ii. 4-6; Bowerb. E. M. i, 239-44, pl. ii. 1-6; Lacord. ii. 77; Brullé, Blanch: He Nes. pl. xxive= Cloeon dipterum (aquat. ). marocana, Fab. E. S. III. i. 69= Polymitarcys (? virgo). minima, Lin. v. S. N. 62; Mil. Pr. 142; Schr. F. B. II. ii. 198= Canis dimidiata ? minor, ! Ste. Ill. vi. 60=Leptophlebia fusca, 2 im. mutica, Lin. (i. F. 8. 52); x. 8S. N.i. 547; ii. F. S. 1479; (Geof. ii. 240.7) =Baetis pumilus, g subim. ? myops, Walsh, Proc. Ent. Soe. Philad. ii. 207, note20; g im. natata, | Walk.; in Palingenia, Walk.; Hag. Am. Syn. 39; Walsh, Proce. Ent. Soc. Philad. ii. 177=guttulata, 9 subim. nervosa, Vill. iii. 22= Heptagenia venosa. migra, Lin, ii. F. 8. 1478; xii. S. N. 907; Fab. S. E. 304; (Schef. Ie. ii. pl. cliv.1, 2?) ; Schr. En. 606; Fab. Sp. In. 385, & Mant. i. 244; Vill. iii. 19; Gmel. 2629; Ros. F. Etr. ii. 8; Ol. Enc. Meth. vi. 419; Fab. KE. S. III. i. 70; Ced. 185; Walck. ii.9; Lat. H. N. xiii. 98; Pz. Expl. Schef. Ic. cliv.; Stew. Elem. II. ii. 225; Ste. Ill. vi. 67; Blanch. H. N. iii. 54=Baetis niger, subim. t nigra, Foure. E. Par. ii. 8352= Leptophlebia cincta, subim. nigrimana, Duf. Rech. 580, n.= Heptagenia (¢, sp. P)-im. 30 Rev. A. E. Haton’s Monograph EPHEMERA (continued). notata (Zsch. i. 50, No. 16); Gmel. 2630; Ol. Enc. Meth. vi. 422= Baetis binoculatus, 2 im. noveboracana, Licht. Cat. Mus. Holth. iii. 193= Heptagenia luridipennis ? parvula, Scop. E. Carn. 264; Vill. iii. 22; Ol. Ene. Meth. vi. 421=Cen- troptilum luteolum ? plumosa, Mil. Pr, 142=Cenis (sp. P). procellaria, Schwarz, Nomencl. Res. Ins. Bel. pl. xii. 1-3=Leptophlebia marginata ? [procera, Hag.= Dictyoneura. ] pudica, Hag. Am. Syn. 39; Walsh, Proc. Ent. Soc. Philad. ii. 177; 2? subim.; incerte sedis. [ pusilla, Zet. MS.=Cenis macrura, 9 subim.? ] reticulata, Foure. H. Par. ii. 350= Potamanthus luteus. rosea, ! Ste. Ill. vi. 59=Ephemerella ignita, im. rufa,! Ramb. Nevr. 296= Heptagenia venosa, 2 im. ? rufescens, ! Ste. Ill. vi. 59= Ephemerella ignita, im. [rupestris, Hill, Dec. 8; a Trichopteron.] russula, Mil. Pr. 1483=Cloeon, g im. serica, | NOV. Sp. simulans, ! Walk. Cat. 586; Hag. Am. Syn. 388=guttulata, ¢ subim. speciosa, Pod. Mus. Gr. 98; Schr. En. 604; Vill. iii. 22; Ol. Ene. Meth. vi. 418; Lat. H. N. xiii. 97=Baetis, sp. incert. stigma (Zsch. i. 50, No. 20); Gmel. 2630; Ol. Ene. Meth. vi. 422= Hepta- genia lateralis or semicolorata, subim. ? || stigma, ! Ste. Ill. vi. 56=Leptophlebia marginata, g im. striata, Lin. xii. 8. N. 907; Fab. S. EH. 304, & Sp. In. i. 385, & Mant. i. 244; Berk. Syn. i. 150; Vill. iii. 20; Gmel. 2680; Ol. Enc. Meth. vi. 420; Fab. E. 8. III.i.71; Ced. 1385; Lat. H. N. xiii. 99; Stew. Hlem. II. ii. 226= Baetis pumilus, g im.? } striata, Mul. Pr. 143=Cloeon dipterum, 9 im. { striata, Blanch. H. N. iii. 55=Cloeon russulum, im. ? + striata, Walck. ii. 10O=Baetis binoculatws, subim. ? submarginata, ! Ste. Ill. vi. 58=Leptophlebia helvipes, 2 im. sulphurea, Mul. Pr. 142 = Heptagenia elegans, ? Swammerdamiana, Shaw, vi. pl. lxxxii.=seq. Swanmerdiana, ! Lat. H. N. xiii. 96, & Gen. iii. 184; Cuv. R. A. ed. 1, iii. 430; ed. ii. 244; Lamarck, ed. 1,iv. 221; Blanch. R. A. ed. Crochard, xiii. 91, & H. N. iti. 54= Palingenia longicauda. talcosa, ! Ste. Ill. vi. 57= Leptophlebia marginata, 9 im. testacea (Zsch. i. 50, No. 17); Gmel. 2630; Ol. Enc. Meth. vi. 422= Baetis pheops ? venosa, (De G. Mem. ii. 625, pl. xviii. 1-4), Fab. S. E. 304, & Sp. In. i. 384; Thunb. 81; Fab. Mant.i. 243; Gmel. 2629; Ol. Ene. Meth. vi. 418; Fab. HE. S. III. i. 70; Lat. H.N. xiii. 97= Heptagenia. t venosa, Zet. 1045, § =Siphlurus, sp. incert. vespertina, Lin. (It. Gil. 21; i. F. 8. 755); x. S. N. i. 547; ii. F.S. 1480; (Geof. ii. 239. 4); Lin. xii. S. N. 906; (De G. Mem. ii. on the Ephemeride. 31 ErHEmera (continued). 646, pl. xvii. 11-16); Fab. S. B. 303, & Sp. In.i. 384, & Mant. i. 243; Berk. Synop. i. 150?; Vill. iii. 17; Gmel. 2628; Ros. F. Etr. ii. 8; Ol. Enc. Meth. vi. 417; Fab. E. 8. III. i. 69; Schr. F. B. Il. ii. 197 ; Ced. 134; Walck. ii. 9; Lat. H. N. xiii. 95; Stew. Elem. II. ii. 225; Zet. 1045; Westw. Introd. ii. fig. 61, 19 (gill) = Leptophlebia (aquat. ? ?), im. virgo, Ol., (Clut. title p. fig. & pp. 61, 87, 90?; Mey. 197?; Targ. 1741, figs. 1,42; Reaum. vi. pls. xlii.-xliv; Schef. 1757, 1779, Ie. ii. pl. elxxv. 1-3; Abh. iii. 30 pgs. pl. i.); Ol. Ene. Meth. vi. 419; Lat. H. N. xiii. 98, & Nouv. Dict. H. N. x. pl. xix. 5= Polymitarcys. viridescens, Foure. E. Pav. ii. 351= Leptophlebia marginata, subim. vitrea, Zet. 1045—Leptophlebia cincta, im. vitripennis, Blanch. Chili, vi. 107, Atl. Nevr. ii. 3; in Ephemera (Cloe), Blanch.=Cloeon. ° vulgata, Lin. (i. F. S. 750; De G. Obs. 463, pl. xvii. 2); Lin. x. 8. N. i. 546; Kr. (1760) 26; Lin. ii. F. S. 1472; Sulz. (1761) 48, pl. xvii. 103; Scop. E. Carn. 263 (diagn.), pl. xxxviii. 683; (Geof. ii. 238. 1); Mul. F. Frid.63; Pont. Nat. Dan. 223; Schef. Elem. pl. Ixii. 1-3; Lin. xii. 8S. N. 906; Hout. (1766-9); (De G. Mem. ii. 621, pls. xvi.-xvii. 1-10); Georg. Bem. i. 190; Fab.S. E. 303; (Schef. Ic. i. pl. ix. 5-6) ; Mil. Pr. 142; Schr. En. 602; Fab. Sp. In.i. 383 ; Thunb. 81; Foure. E. Par. ii. 351; Fab. Mant.i. 243; Berk. Syn. 1.150; Vill. iii. 16; (Zsch. i. 50, No. 138); Gmel. 2628; Ros. F. Etr. i. 7; Ol. Ene. Meth. vi. 417; Fisch. Vers. 564; Fab. E. S. III. i. 68; Schr. F. B. IL. ii. 196; Ced. 184; Walck. i. 8; Lat. H. N. xiii. 94; Pz. Expl. Schef. Ic. ix. 5-6, & F. Germ. heft. xciv. 16; Shaw, vi. pl. lxxxi.; Lat. Gen. iii. 184; Leach, E. Ene. ix. 187; Cuv. R. A. ed. 1, iii. 480; Lamarck, ed. 1, iv. 221; Stew. Elem. II. ii. 225; Cuv. R. A. ed. 2, v. 244; Guer. Ic. ii. pl. lx. 8 (aquat.); Gray, Grif. Cl. Ins. ii. pl. xciv. 8 (aquat.); ! Ste. Ill. vi. 55; (Ronalds I., pl. xiv. 30-31); Dalhbom, 228; Perch. vi. pl. iv. lm.; Burm. Handb. ii. 804; Zet. 1044; Voigt, v. 811; Her.-Schef. 346; Blanch. H. N. iii. 53; Duf. Rech. 580, n.; Lat. Nouv. Dict. H. N. x. 348; Sieb. Beit. xii. 3; Walk. Cat. 534; Hag. Brit. Syn. 14; Stein, Berl. Ent. Zeit. vii. 414; Hag. Stet. Ent. Zeit. xxvi. 229. + rulgata, Don. B. I. iv. 53, pl. exxviii.; Sam. E. Comp. 260, pl. vii. 2; Wood, ii. 21-3, pl. xlvii.; Dum. Cons. Gen. 204, pl. xxviii. 4, 5; Blanch. R. A. ed. Crochard, xiii. 91, xiv. pl. cii, 1-¢ ; Newport, Tod’s Cye. ii. 864, fig. 345; Westw. Introd. ii. fig. 61, 1 (the abdominal spots being reversed)-15; Blanch. H. N. iii. 53; !Ramb. Nevr. 293; Pict. Ephem. 126, pls. i-vi.; Ronalds V. no. 28; Brau. N. Aust. 25; E. Pict. Névr.d’Hsp. 22; Oul. 1867, p. 25; Ausser. Neur. Tirol. 13l=danica. t vulgata, Wagner, Isis, 1832, p. 332, pl. ii. 1= Baetis (aquat.). XVI. EpxemMEReLia, Walsh (1862); in Ephemera, c. 3-set., Pod.; Pota- manthus, Pict.; Baetis, Walker. Typ. EH. invaria. ened, Pict.; in Potamanthus, Pict. consimilis, Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 378; ¢ im. excrucians, ! Walsh, lib. cit., p. 877, & Proc. Ent. Soc. Philad. ii. 178= imvaria. gibba, Pict.; in Potamanthus, Pict. ignita, Pod.; in Ephemera, Pod. invaria, | Walk.; in Baetis, Walk. 32 Rey. A, E. Eaton’s Monograph Epnoron, Will. leukon, Will. Trans. Am. Soc. Philad. v. 71-3=Baetis ? IX. Evruypnocta, nov. gen. Typ. E. Hecuba. Hecuba, ! Hag.; in Palingenia, Hag.; 9 im. HemeErosivs, Clut. cap. viii. fig. & p. 100= Palingenia longicauda. XXVI. Hezpracenia, Walsh (1863); in Ephemera, Poda; Baetis, Say; Palingenia, Walk. Typ. H. flavescens. alpicola, ! noy. sp. angustipenmis, ! Ramb.; in Ephemera, Ramb.; Baetis, Hd. Pict. annulifera, ! Walk.; in Palingenia, Walk. basalis, ! Walk.; in Baetis, Walk. Bellieri, ! Hag.; in Baetis, Hag. borealis, ! nov. sp., ¢ im. canadensis, ! Walk.; in Baetis, Walk. cruentata, Walsh, Proc. Ent. Soc. Philad. ii. 205, note 19. cupulata, ! noy. sp. determinata, ! Walk.; in Baetis, Walk. elegans, Curt.; in Baetis, Curt. : fiaveola, Pict.; in Baetis, Pict. flavescens, ! Walsh; in Palingenia (C), Walsh. flavipennis, Duf.; in Ephemera, Dut. fluminum, Pict.; in Baetis, Pict. fusca, ! Walk.; in Baetis, Walk. guttata, Pict.; in Baetis, Pict. insignis, ! (Ronalds I. pl. xi. 22); Etn. Trans. Ent. Soe. 1870, p. 7. interpunctata, Say; in Baetis, Say; Palingenia (C), Walsh (1862). tridana, Kolen.; in Baetis, Kolen. ‘lateralis, Curt.; in Baetis, Curt. longicauda, ! Ste.; in Baetis, Ste. lwridipennis, Burm.; in Baetis, Burm. maculipennis, Walsh, Proc. Ent. Soc. Philad. ii. 206, note 19. montana, Pict.; in Baetis, Pict. wigrimana, Duf.; in Ephemera, Duf.; sp. dub. nivata, ! Nov. sp. Picteti, Meyer-Diir; in Baetis, Meyer-Diir. pulchella, Walsh; in Palingenia (C), Walsh. semicolorata, Curt.; in Baetis, Curt. simplex, Walsh, Proc. Ent. Soc. Philad. ii. 204, note 19. sylvicola, |! Hd. Pict.; in Baetis, Ed. Pict. tessellata, Hag.; in Baetis, Hag.; incerte sedis (perhaps a Leptophlebia). torrida, ! Walk. ; in Baetis, Walk. venosa, Fab.; in Ephemera, Fab.; Baetis, Ste. vicaria, ! Walk.; in Baetis, Walk. vitrea, | Walk.; in Palingenia, Walk. on the Ephemeride. 35 HEPrTacEenta (continued). volitans, | Etn. Trans. Ent. Soc. 1870, p. 7, ¢ im. zebrata, ! Hag.; in Baetis, Hag. VIII. Hexacknra, Walsh (1863); in Ephemera, Web.; Baetis, Say ; Palingenia, Pict. albivitta, | Walk.; in Baetis, Walk. ? atrostoma, Web.; in Ephemera, Web. bilineata, Say; in Baetis, Say; Palingenia, Walsh, 1862. decolorata, Hag.; in Palingenia, Hag. limbata, ! Guer.; in Ephemera, Guer.; Palingenia, Pict. XXIII. Isonycuta, nov. gen. Typ. I. manca. manca, | NOY. sp. ignota, ! Walk.; in Baetis, Walk. II. Lacunanz, Hag. (1868). Typ. L. abnormis. abnornmis, Hag. Proc. Bost. Soc. Nat. Hist. 1868, p. 372-4, fig.; 9 im. XII. Lepropuirst1s, Westw. (1840); in Ephemera, Reaumur; Baetis, Ste.; Potamanthus, Pict.; Palingenia, Walk. anmulata, ! Hag.; in Potamanthus, Hag. auriculata, ! nov. sp.; ¢ im. australasica, Pict.; in Baetis, Pict. australis, ! Walk.; in Ephemera, Walk. castanea, Pict.; in Potamanthus, Pict. cincta, Retz. ; in Ephemera, Retz. Colombice, ! Walk.; in Ephemera, Walk.; Palingenia, Hag. costalis, Burm.; in Baetis, Burm. cupida, Say; in Ephemera, Say ; Potamanthus, Hag. dentata, ! nov. sp.; ¢ im. dislocams, ! Walk.; in Ephemera, Walk. femoralis, Hag.; in Potamanthus, Hag. fusca, Curt.; in Ephemera, Curt.; Potamanthus, Pict. furcifera, ! noy. sp.; g¢ im. helwipes, ! Ste.; in Ephemera, Ste. tmconspicua, |! noy. sp.; ¢ im. Krueperi, Stein; in Potamanthus, Stein. marginata, Lin.; in Ephemera, Lin.; Potamanthus, Hag. modesta, | Hag.; in Potamanthus, Hag. mollis, ! Hag.; in Cloe, Hag. [not described]. nebulosa, ! Walk.; in Palingenia, Walk. nodularis,! nov. sp.; go im. Picteti, Etn.; for Potamanthus } marginatus, Pict. prisca, Pict.; in Potamanthus, Hag. & Pict. scita, ! Walk. ; in Baetis, Walk. strigata, ! nov. sp.; 9 im. TRANS. ENT. soc. 1871.—ParTI. (MARCH.) D 34 Rey. A. H. Eaton’s Monograph LeprorpHuEsia (continued). Taprobanes, Walk. ; in Baetis, Walk. vespertina, Lin.; in Ephemera, Lin.; Cloe, Oul. Macrocercus, Westw. Partingt. Cyc. Nat. Hist. (1836) ii. 439=Cenis. I. OxiconEurt, Pict. (1843-5). anomala, Pict. Ephem. 290, pl. xlvii.; Walk. Cat. 585; Hag. Stet. Ent. Zeit. xvi. 269, pl. i.; Am. Syn. list, 8304; 2 im. ft anomala, Pict. Ephem. pl. xlvi.; Kirsch. Jahrb. Naturk. Nassau, heft ix. 44-5=rhenana. pallida, (? Costa, Faun. Asprom. pl.i. 2); O. rhenana, var. pallida, Hag. Stet. Ent. Zeit. xvi. 268, pl. i. rhenana, Imh. Bericht. x. 180; Hag. Stet. Ent. Zeit. xvi. 267, pl. i.; Brau. N. Aust. 25; Mul. Ent. Mo. Mag. i. 262, ii. 182; ! Etn. Ent. Mo. Mag. vy. 83. Trimeniana, | M’Lachl. Ent. Mo. Mag. iv. 177-8; Etn. op. cit. v. 83; 2 im. OxycypeHa, Burm. (1839) [misprinted Onycypha, Ramb. Nevr.] =Cenis. discolor, Burm. Handb. ii. 797 =Cenis. lactea, Burm. Handb. ii. 796 ; Her.-Schef. 346; Sieb. Beit. xii. 3=Cenis chironomiformis. luctuosa, Burm. Handb. ii. 797; Her.-Schef. 346; Sieb. Beit. xii. 83= Cenis, & im. VI. Paxincenta, Burm. (1839) ; in Ephemera, Ol. Typ. P. longicauda. alba, Say, in Baetis, Say; Hag. Am. Syn. 40=Baetis, 9. albicans, Burm. Handb. ii. 803; Pict. Ephem. 149, pl. xiii. 1-3; ! Walk. Cat. 548 (excl. 2 ?); Hag. Am. Syn. list, 304—=Campsurus. albifilwm, | Walk. Cat. 554 (excl. var.); Hag. Am. Syn. list, 304=Camp- surus. t albifilum var., ! Walk. loc. cit.=Asthenopus curtus, g im. annulifera, | Walk. Trans. Ent. Soc. N. S. v. 199=Heptagenia, 9 im. atrostoma, Web., in Ephemera, Web.; Pict. Ephem.157; Walk. Cat. 550; Hag. Am. Syn. list 304= Hewagenia ? bicolor, ! Walk. Cat. 552; Hag. Am. Syn. 48=Siphlurus, 2 subim. bilineata, Say, in Baetis, Say; Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 373, & Proc, Ent. Soc. Philad. ii. 174-5, 189, 199= Hexagenia. { bilineata, Hag. Am. Syn. 41= Hexagenia limbata. Colombie, ! Walk.; Hag. Am. Syn. list, 304=Leptophlebia, 9 subim. concinna, | Walk. Cat. 553=Leptophlebia cwpida, g im. continua, ! Walk. Trans. Ent. Soc. N. 8. v. 199=Hewxagenia albivitta, 3 im. curta, ! Hag. Am. Syn. list, 304; for albifilum, var., Walk.=Asthenopus. decolorata, Hag. Am. Syn. 48=Hevragenia, 9 subim. dorsalis, Burm. Handb. ii. 803, 1015; Pict. Ephem. 153, pl. xiii. 5; Walk. Cat. 549; Hag. Am. Syn. list, 304—=Asthenopus, 9. (dorsigera, Hag. Am. Syn. list; not described.] flawescens, ! Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 373, & Proc. Ent. Soc. Philad. ii. 177= Heptagenia. co Ce on the Ephemeride. PaLinaEnia (continwed). fuliginosa, Georg.; in Ephemera, Georg.=longicauda. gigas, Hag. Verh. zool.-bot. Ver. Wien, 1854, p. 227; incerte sedis. Hecuba, ! Hag. Am. Syn. 40=Euthyplocia, 9 im. horaria, Burm. Handb. ii. 802; Her.-Schef. 846; Sieb. Beit. xii. 3; Hag. Stet. Ent. Zeit. xxvi. 229; Loew, Verh. zool.-bot. Ges. Wien, xvi. 947 = Polymitarcys virgo. humeralis, |! Walk. Cat. 552=Coloburus, 9 subim. indica, Pict. Ephem. 151, pl. xiii. 4; Walk. Cat. 549= Polymitarcys, 2 im. interpunctata, Say, in Baetis, Say; Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 374, & Proc. Ent. Soc. Philad. ii. 177, 190= Hepta- genia. lata, ! Walk. Cat. 550, 3. latipemnis, ! Walk. Cat. 554 (excl. var.); Hag. Am. Syn. list, 304=Camp- surus, im., subim. limbata, ! Pict. Ephem. 146, pl. xii.; Walk. Cat. 548; ! Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 373, & Proc. Ent. Soc. Philad. ii. 176, 199, with No. 4= Hewxagenia. } limbata, Hag. Am. Syn. 42= Hewagenia bilineata. longicauda, Ol., in Ephemera, Ol.; (Swam. 1675; ed. Tyson, p. 44, pl. i.- v. 2 [aquat.] pl. v. 1, 3 et seq.-vili. [aer.] ; Blegny, 1680; Scheef. Ie. iii. pl. eciv. 3); Burm. Handb. ii. 803; Her.-Scheef. 346; Pict. Ephem. 155, pls. xiv, xiv bis, xvi.; Corn. (1848); Walk. Cat. 549; Hag. Stet. Ent. Zeit. xv. 316-9, xx. 431; Loew, Verh. zool.-bot. Ges. Wien, xi. 409-10. macrops, Pict. Trait. d. Paleont. II. ii. 371; Hag. Verh. zool.-bot. Ver. Wien, 1854, p. 227; Pict. & Hag., Org. Rest. im Berns. ii. 74, pl. vi. 2 b., pl. viii. 5= Polymitarcys. natata, ! Walk. Cat. 551= Ephemera guttulata, 2 subim. nebulosa, ! Walk. Cat. 554—=Leptophlebia, g im. occultata, ! Walk. Cat. 551; Hag. Am. Syn. 43=Hewxagenia bilineata, 2 subim. pallipes, ! Walk. Cat. 553=Leptophlebia cupida, 2. puella, Pict. Ephem. 145, pl. xi. 4-5; Walk. Cat. 548; Hag. Am. Syn. 40 =Campsurus, 2 -im. ? pulchella, Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 375, & Proc. Ent. Soe. Philad. ii. 177, 203= Heptagenia. Savignyi, Pict. Ephem. 157 ; Walk. Cat. 550 [not described] = Polymitarcys. terminata, Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 376, & Proc. Ent. Soc. Philad. ii. 177= Heptagenia pulchella ? [wnbrata, Hag. Am. Syn. list, 304; not described.] virgo, Ol., in Ephemera, Ol.; Pict. Ephem. 141, pl. ix-xi. 3; Villa, 1847, 1-6; Walk. Cat. 547; Letzner, 1854; Brau. N. Aust. 25; Oul. 1867, p. 26; Ausser. Neur. Tirol. 182= Polymitarcys. viridescens, ! Walk. Cat. 550= Hexagenia bilineata, ¢ subim. vittigera, ! Walsh. Proc. Acad. Nat. Se. Philad. 1862, p. 373, & Proc. Ent. Soe. Philad. ii. 174= Pentagenia. vitrea, | Walk. Cat. 555—Heptagenia, 2 subim. 2D 36 Rey. A. E. Haton’s Monograph VII. Pernracenta, Walsh (1863); in Palingenia (A), Walsh (1862). Typ. P. vittigera. quadripunctata, Walsh, Proc. Ent. Soe. Philad. ii. 198, note 16; subim., 9 im. vittigera, ! Walsh; in Palingenia, Walsh. V. Potymirarcys, Etn. (1868); in Ephemera, Ol.; Palingenia, Burm. Typ. P. virgo. indicus, Pict.; in Palingenia, Pict.; 2 im. macrops, Hag.; in Palingenia, Hag. Savignii, ! nov. sp. (Savigny, pl. ii. 5, Ephemera; in Palingenia, Pict.; not described). virgo, Ol.; in Ephemera, Ol.; Palingenia, Pict. XI. Poramantuvs, Pict. (1843-5); restricted, Etn. (1868); in Ephemera, auct.—Typ. P. luteus. eneus, Pict. Ephem. 229, pl. xxxiii.; Walk. Cat. 545=Ephemerella, 9 im. annulatus, Hag. Ceyl. Syn. i. 476= Leptophlebia, 3. apicatlis, Ste., in Hphemera, Ste.; Pict. Ephem. 236; Walk. Cat. 544 = Ephemerella ignita, g im. brunneus, Pict. Ephem. 217, pl. xxvii.; Walk. Cat. 542 = Leptophlebia fusca. castaneus, Pict. Ephem. 215, pl. xxvi. 4,5; Walk. Cat.542=Leptophlebia, 9 im. cinctus, Retz., in Ephemera, Retz.; Pict. Ephem. 219, pl. xxviii. (excl. 5) ; Walk. Cat. 543; Brau. N. Aust. 27; Hag. Brit. Syn. 20; Ausser. Neur. Tirol. 137= Leptophlebia. concinnus,! Walk., in Palingenia, Walk.; Hag. Am. Syn. 51=Lepto- phlebia cwpida, g im. costalis, Burm., in Baetis, Burm.; Pict. Ephem. 237; Walk. Cat. 546 = Leptophlebia, subim. cupidus, Say, in Ephemera, Say; Hag. Am. Syn. 51; Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 372, & Proc. Ent. Soc. Philad. ii. 172, 189, 194, notes 14, 15= Leptophlebia. dilutus, Ste., in Ephemera, Ste.; Walk. Cat. 545; Hag. Brit. Syn. 19; [misprinted dilectus, Pict. Ephem. 236] =EHphemerella ignita. dispar, ! Ste., in Ephemera, Ste.; Pict. Ephem. 234; Walk. Cat. 542= Leptophlebia helvipes, g im. erythrophthalinus, Schr., in Ephemera, Schr.; Pict. Ephem. 222, pl. xxix. (misprinted erythrocephalus) aquat., pl.xxx.; Walk. Cat. 544; Hag. Brit. Syn. 21=Hphemerella ignita. exspectans, ! Walk. Trans. Ent. Soc. N.S. v. 198= Ephemera, 2 subim. fasciatus, ! Hag. Ceyl. Syn. i. 476= Ephemera. femoralis, Hag. loc. cit.= Leptophlebia. Ferreri, Pict. Ephem. 203, pl. xxv. 1; Walk. Cat. 539; ¢ im. fuscus, Curt., in Ephemera, Curt.; Pict. Ephem. 235; Walk. Cat. 543; Hag. Brit. Syn. 19= Leptophlebia. } Geerii, Pict. Ephem. 211, pl. xxvi. 1-8; Walk. Cat. 541; Brau. N. Aust. 27; Hag. Brit. Syn. 18; Ausser. Neur. Tirol. 1836=Leptophlebia helvipes. gibbus, Pict. Ephem. 226, pl. xxxi.-xxxii. (aer.); Walk. Cat. 544=Ephe- merella. halteratus, Fab., in Ephemera, Fab.; Pict. Ephem. 236; Walk. Cat. 546= Leptophlebia cincta, g im. on the Hphemeride. 37 Poramantuts (continued). helvipes, ! Ste.,in Ephemera, Ste.; Pict. Ephem. 2385; Walk. Cat. 543= Leptophlebia, 2 im. hyalinus, Zet., in Ephemera [hyalinata], Zet.; Pict. Ephem. 237= Lepto- phlebia cincta. , inanis, Gmel., in Ephemera, Gmel.; Pict. Ephem. 235; Walk. Cat. 544= Leptophlebia cincta, g im. || inanis, Pict. Ephem. 232, pl. xxiv. 4; Walk. Cat. 547; incerte sedis (allied to Tricorythus) ; Gen. XIII. Krueperi, Stein, Berl. Ent. Zeit. vii. 414= Leptophlebia ?, im. luteus, Lin., in Ephemera, Lin.; Pict. Ephem. 205, pl. xxv. 2,3; Walk. Cat. 539; Hag. Stet. Ent. Zeit. xxvi. 229. marginatus, Lin., in Ephemera, Lin.; Hag. Brit. Syn. 17, & Stet. Ent. Zeit. xxvi. 229= Leptophlebia. { marginatus, Pict. Ephem. 208, pl. xxv. 4, 5; Walk. Cat. 540; ? Oul. 1867, p. 27= Leptophlebia Picteti. minor, ! Ste., in Ephemera, Ste.; Pict. Ephem. 237; Walk. Cat. 546= Leptophlebia fusca, @ im. modestus, ! Hag. An. Soc. Ent. Fr. 1864, p. 89= Leptophlebia. nebulosus, ! Walk., in Palingenia, Walk.; Hag. Am. Syn. 52; Walsh, Proc. Ent. Soc. Philad. ii. 193, note 13, 194, note 15= Lepto- phlebia, g im. odonatus, Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 372, & Proc. Ent. Soe. Philad. ii. 171=nebulosus, g im. priscus, Pict. Trait. d. Paleont. II. ii. 871; Hag. Verh. zool.-bot. Ver. Wien, 1854, p. 227; Pict. & Hag. Org. Reste im Bernst. ii. 77, pl. vi. 3, b= Leptophlebia. roseus, Ste., in Ephemera, Ste.; Pict. Ephem. 236; Walk. Cat. 545= Ephemerella ignita, im. stigma, ! Ste., in Ephemera, Ste.; Pict. Ephem. 235; Walk. Cat. 541= Leptophlebia marginata, g im. submarginatus, ! Ste., in Ephemera, Ste.; Pict. Ephem. 236; Walk. Cat. 545=Leptophlebia helvipes, 2 im. talcosus, ! Ste., in Ephemera, Ste.; Pict. Ephem. 234; Walk. Cat. 541= Leptophlebia marginata, 2 im. + Sempuis, Pz. Expl. Schef. Ic. t marginata, Pz. op. cit. Ie. eciv.= Palingenia longicauda. XXI. Srpsuvurvus, Etn. (1868) [mis-spelt Siphlonwrus] ; in Baetis, Say; Ephemera, Zet.; Palingenia, Walk. Typ. S. flavidus. alternatus, Say ; in Baetis, Say; Baetis (A), Walsh. annulatus,! Walk; in Baetis, Walk. ? aridus, Say; in Baetis, Say ; Baetis (B), Walsh. armatus, ! Etn. Trans. Ent. Soc. 1870, p.6; g¢ im. bicolor, ! Walk.; in Palingenia, Walk. ? debilis, Walsh; in Baetis (C), Walsh. femoratus, Say; in Baetis, Say; Baetis (A), Walsh. jlavidus, ! Ed. Pict.; in Baetis, Ed. Pict. lacustris, ! Etn. Trans. Ent. Soc. 1870, p. 7. Linneanus,! nov. sp.; fo im. ? siccus, Walsh; in Baetis (B), Walsh. XIV. Tricoryruus, Etn. (1868); in Ephemera, Savigny; Cenis, Pict. varicauda, Pict., (Savigny, pl. ii. 6, 7); in Canis, Pict. 38 Rey. A. E. Eaton’s Monograph Fossil Hphemeride. The oldest known fossil of this Family has been dis- covered in the Solenhofen slate. It is a fragment of a wing [Pl. I. fig. 10] and is in the British Museum. The best preserved of the extinct Ephemeride are those found in Stettin Amber. These species are such as would be likely to occur in a large river. They differ but slightly from extant species, and some of them are referable to recent Huropean genera. Many remains of insects from formations older than the Tertiary have been referred to the Hphemeride, but with doubtful accuracy. The following works contain notices of such fossils. 1845. Brodie’s History of Fossil Insects, p. 127, pl. x. 4. [The actual specimen is in the British Museum; it exhibits an affinity to the Plani- pennia. | 1856. F. Goldenburg, in Dunker & Meyer’s Paleontographica, iv. 33-5, pl. ii. 5 & vi. 5, 6, described and figured three species of a genus Dictyoneura. [I consider this genus not to belong to the Ephemeride, because the subcosta ends abruptly at the nodus in the anterior wing; and because the thickened basal veinlet is absent. Dr. Dohrn ranks it with Eugereon.] 1861. H.A. Hagen, in Meyer’s Paleontogr. x. 115-118, pl. xv. 2, 3, 5, described and figured Ephemera cellulosa, E. ? procera, and HE. mortua, together with E. prisca (Syn. Sciaria prisca, Germar, Noy. Act. Leopold. xix. 211-212, pl. xxiii. 11; Id., Giebel, Insect. d. Vorwelt, p. 230; Deutschl. Petrefakt, p. 640). [Cellulosa and procera have since been referred to Dictyoneura. It is impossible to determine the nature of the others, from the figures. ] 1864. J.D. Dana, in Silliman’s American Journal of Science, xxxvii. 34, described the genera Miamia and Hemeristia. [In 1866, Mr. 8S. H. Scudder erected a Family Paleopterina for these. Dr. Brauer, in 1866, cited them amongst the Ephemeride. Perhaps these genera are related to the Planipennia, as Mr. M’Lachlan suggests, or perhaps (but this is hardly probable) to Dictyoneura.} 1868. Dr. A. Dohrn, in Meyer’s Paleontogr., gave a figure and de- scription of Hugereon Beckingii. [He referred it to the same group as Dictyoneura. Dr. Brauer, in the same year, ranked it amongst the Ephemeride. The condition of the mouth-organs clearly separates it from the Ephemeride; and the neuration of the wings favours Dr. Dohrn’s determination of its relationship. ] : 1867. J. W. Dawson, in the Geological Magazine, iv. 385-388, pl. xvii. 1-5, described and figured Haplophlebium Barnesii, Platephemera antiqua, Homothetus fossilis, and Xenoneura antiquorum. [They have all been regarded as allies of the Ephemeride. Haplophlebium, however, on account of the well-marked nodus in the fore-wing, and the character of the reticulation between the principal longitudinal nervures is, I think, related to Dictyoneura and Eugereon: Platephemera and Homothetus may possibly be of the Ephemeride, but there is nothing in the figures to make this certain: and there is no reason for considering that Xenoneura be- longs to this Family.] oa on the Ephemeride. 39 1868. §S. H. Scudder, in Geol. Mag. v. 175-7, and 218-19, catalogued three genera in addition to those of Prof. Dawson’s paper. [‘‘ Gerephe- mera simplea is represented by a slight fragment of the tip of a wing; the wing must have been large and broad; the veins distant, weak and simple. It is apparently a member of the family Ephemerina.” Platephemera an- tiqua is referred to the same family, although the base of the wing is wanting, as well as apiece of the tip. A fragment of what is ‘‘ probably ” a portion from the middle of a wing is named Dyscritius vetustus, not- withstanding that ‘it is impossible to determine” from it “either the approximate size of the insect, or the family to which it belongs.” Li- thentomum Hartii is also described. Mr. Scudder correctly observes at p. 218, that Palephemera medicva, Hitchcock (previously named Mormolu- coides antiquorum, Hitchcock) is not a nymph of an Ephemerid]}. 1868. §.H. Scudder described, in the Paleontology of Illinois, p. 571-2, figs. 8-10, a genus Ewphemerites with two species, HE. gigas and afjinis, which he ranks among the Ephemeride. Paleeontologists have adopted a ridiculous course with regard to some insect fossils. -Whenever an obscure fragment of a well-reticulate insect’s wing is found in a rock, a genus is straightway set up, and the fossil named as a new species. The species is then referred to the Lphemeride, and is immediately pronounced to be a syn- thetic type of insects at present distantly related to one another in organization. This enunciation of synthetic types is often nothing less than a resort to random con- jecture respecting the affinities of animals which the writer is at a loss to classify. An insect allied to the Hphemeride which chirped like a Locust (such as Xeno- newra is imagined to have been), is a tolerable sample of these synthetic types. When a fossil comprises only a fragment, or even a complete wing of an Ephemerid, it is hardly possible to determine the genus, and impossible to assert the species. The utmost that can be learned from such a specimen is the approximate relations of the insect. Neuration by itself is not sufficient to define the species or even the genera of recent Hphemeride. The following list contains the names of the fossils hitherto reputed Hphemeride upon questionable grounds. I shall take no further notice of them. Genus DicryonreuRA, Goldenb. 1856. anthracophila, Goldenb. 1856. cellulosa, Hag. 1861. Humboldtiana, Goldenb. 1856. libelluloides, Goldenb. 1856. procera, Hag. 1861. 40 Rey. A. E. Haton’s Monograph Genus Dyscritivs, Scud. 1868. vetustus, Scud. 1868. Genus Epnemera, Hag. 1861; (nec Lin.). cellulosa, Hag. 1861=Dictyonewra. ? mortua, Hag. 1861; incerte sedis. prisca, Germar, Hag. 1861; vide Sciaria. procera, Hag. 1861= Dictyonewra. Genus EvcErreon, Dohrn. Beckingii, Dohrn, 1868. Genus Epuemenires, Geinitz, Hag. 1865; in Leonhard & Geinitz, Jahrb. f. Mineral. &c., 1865, p. 385 [Brauer]. Genus HuPHEMERITES, Scud. 1868. affivis, Scud. 1868. gigas, Scud. 1868. Genus GEREPHEMERA, Scud. 1868. simplex, Scud. 1868. Genus HapLopHuesium, Dawson, 1867. Barnesii, Dawson, 1867. Genus HemertstiA, Scud. 1864. Brownsoni, Scud. 1864. Genus Homornetus, Dawson, 1867. fossilis, Dawson, 1867. Genus LirHentomum, Scud. 1868. Hartii, Scud. 1868. Genus Miamta, Scud. 1864. Brownsom, Seud. 1864. Genus Mormo.vucoipss, Hitehcock. antiquorum, Hitchcock. Genus PatErHEemeERA, Hitchcock= Mormotucoides. medieva, Hitchcock=M. antiquorwm. Genus PLaTEpHEMERA, Dawson, 1867. antiqua, Dawson, 1867. Genus Sctar1a, Germar. prisca, Germar ; cf. Ephemera, Hag.; incerte sedis. Genus XENONEURA, Dawson, 1867. antiquorum, Dawson, 1867. Ps on the Ephemeride. 41 Family HPHEMERIDAi. (ArxipTerA, Brullé; Anisoprera, Stephens). The Ephemeride are hexapod insects which have many- jointed caudal setee; which carry their fore-wings erect and unfolded; and which in the imago have abortive mouth organs. Antenne aristate; the basal two joints the largest, the bristle many-jointed. Ocelli three. Oculi compound or complex. Legs slender, the anterior pair the longest; tarsi distinctly jomted, terminated by claws. Anter- ior wings large, creased lengthwise, but never folded together ; costa united by a stout cross-veimlet to the radius near the base of the wing; subcosta uninterrupted at the nodus. Posterior wings sometimes absent, some- times rudimentary, at the utmost small. Abdomen ten- jomted: the first abdominal segment joimed immoveably to the metathorax ; the ninth provided in the male with a pair of abdominal legs in the form of claspers (forceps) ; the tenth bearing (two at the fewest, three at the most) multiarticulate caudal sete, which are used as balancers ; the alimentary canal straight, apparently destitute of salivary glands, and inflated with gas; many short ex- cretory tubules are appended to the large intestine ; the penis is situate at the apex of the ninth segment, and is either hidden or exposed ; the oviducts terminate in the joining of the eighth and seventh segments, In coition, the male flies under the female and seizes her prothorax with his elongate anterior legs, simulta- _ neously bending the tip of his abdomen upwards and forwards, and clasping the proper segment of her body with his forceps. During their connexion, which is of brief duration, the pair are chiefly supported by the female, and they gradually descend slowly in the air, sometimes even to the ground. When they separate, the male rejoins his companions. The female retires to the water, and deposits the eggs impregnated, settling again and again upon the surface of the water with extended setzx, until the extruded eggs become detached from the rest. This done, she, in some genera, returns to the general assembly, and “pairs again, and then again deposits eggs ; and so on, until all the eggs are disposed of: thus the same female may be served by several males; and like- wise the same male may frequently serve several females, 42 Rev. A. HE. Eaton’s Monograph not being exhausted by one union. But in other genera, the coitus once consummated, the eggs are deposited in one mass altogether. The egg laid in the water, after some time develops into a nymph, which at first has only the two outer caudal sete, and respires through the integument at large. But, subsequently, when the nymph increases in bulk, special breathing organs grow out from the pos- tero-lateral region of some of the abdominal segments, as well as from the hinder segments of the thorax. These are usually lamellar in form, and nearly always external. The thoracic out-growths persist as the wings ; those belonging to the abdominal segments are deci- duous with the integument, and they are not reproduced after the insect emerges from the water as the sub-imago. * A cloaca at the end of the intestine is a supplementary breathing organ. From the tenth segment, between the two setee first formed, a third seta grows, which in some genera is afterwards cast off at the same time as the mouth-organs, and the gills. The tarsi are jointless, and end in a moveable claw. The food of the insect is obtained from the large quantities of mud which it swallows. The adult nymph sometimes floats on the surface of the water, with the dorsum of the thorax exposed to the air, buoyed up by gas which at that time accumulates be- tween the old and the young integuments, and in the / emptied alimentary canal: and sometimes it crawls a short distance out of the water. In either case, the, thorax opens along the middle dorsal suture. Through this opening the subimago extricates its head and fore- legs from the old skin: the wings suddenly expand fully ; the hinder legs are freed, and then the insect creeps out, and flies heavily to some convenient resting place, where on alighting it assumes the posture characteristic of its genus. In some genera, the subimago is the permanent aerial state of the female; in most cases, however, the subimaginal pellicle is cast sooner or later, according to the temperature of the air and the habit of the genus. The dingy appearance of the subimago, the comparative shortness of its sete and tarsi, and the ciliate terminal border of the wings, nearly always distinguish it from the imago. 8 The term “ pseudimago” used by some authors is spurious, and ‘ sub- imago”’ has precedence over “ pro-imago.”’ on the Bphemeride. 43 It is well known that, in some genera, differences be- tween the sexes are apparent in the oculi, setz, and tarsi. The oculi are always smaliest in the female, and in the male are sometimes divided into two parts. The female usually has shorter sete than the male. The middle seta is often shorter than the two outer setz, or altogether absent. Sometimes the male wants the middle seta, whilst the female has it equal to, or only shorter than, the others; frequently neither sex possesses the central seta. The proportions of the tarsal joints of the male are not the same as those of the female; and his anterior legs exceed hers in length. The composition of the abdomen of Hphemeride has been the subject of much dispute. Some consider it to be ten-jointed, others reckon nine joints. The ‘tenth joint” throughout this paper means the dorsal arcus immediately above the sete, the part from which the setze proceed, and the ventral arc often formed of two valve-like pieces under the anus—the intermediate appen- dices of M. Pictet. The ninth joint is that which bears the forceps in the male, and which, in the female, is sometimes prolonged behind into a broad lobe beneath, concealing the tenth joint. This lamina has been mis- taken for the egg-valve in some species. The eighth joint is the first posterior to the opening of the oviducts. From the apical edge of the seventhjoint, beneath, the egg- valve grows out. The next five segments are not pecu- har in point of structure. The first jot is immoveably united with the metathorax, and often resembles it in colour. Hence certain Entomologists have reckoned , this joint a part of the thoracic region. That this joint belongs to the abdomen may, however, be demonstrated in the nymphs of some genera, in which it is furnished with a moveable pair of branchial plates. Now the branchial out-growths of the thorax are always fixtures in the nymph. In certain four-winged genera, those branchial plates of the first segment are present, and may be contrasted with the rudimentary hind-wings. In drying, the colour and form of Hphemeride soon change. Colour is of little importance, even in fresh examples; but form is necessary to the distinguishing of the species. They are, therefore, best preserved in a hquid. It is sufficient for ordinary purposes, to dip the freshly-killed specimen into dilute spirits, and then 44 Rey. A. E. Eaton’s Monograph transfer it to a tube, or homceopathic globule bottle, partly filled with water. Next, Price’s glycerine is added to the water,—one or two drops a day,—until the bottle is gradually filled. A small drop of acetic acid may be added finally, to prevent the growth of mould. The name of the species may be written on the disk of the cork, the date and locality of capture round its side. Hind-wings of the species of Baetis and Centroptiluin should be mounted on slips of glass, for microscopical examination. Pinned specimens are often difficult to determine, in consequence of their shrinking ; to card them is to render them fit for nothing. GENERUM DISTRIBUTIO GEOGRAPHICA. Symbola ( ) species fossiles, [ ] nondescriptas, claudunt. Europa. |America.| Asia. | Africa. Peay Oceania. Oligoneuria ...... yy 1 0 iL 0 0 Lachlania ......../ 0 1 0 0 1) 0) Campsurus......... 0) 6 0 (0) 0) 0) Asthenopus ........ 0 2+/1) |0 0 0 0 Polymitarcys...... 1+ (1) | 0 1+-[2] | 1-+- (1) 0) 0) Palingenia ......... i @) 1 (0) 0) 0) Pentagenia......... 0) 2 0 0 0 0 Hexagenia ........| O 5 [j 0 0) 0 Euthyplocia ...... 0 il 0 0 0 to) Ephemera ......... 4 3+[1] | 4 0 0 0) Potamanthus .....| 2 0 0 0) @) 0) Leptophlebia I ...| 0 0 3 2 9 0 3 IA) gaa} © 1 a) 0 ) 0 oy UNE Seal Ze S| 0 0) 0 0 ay | ANY cool © 2 0 0 @) 0) *) Waal 24 0 0 0 0 0) Genus [XIII] ...... 0 il 0 0 0 0 Tricorythus ....... 0 0 0 i 0 0 (OER) cognossobodacaa 6 2 il 1 0) 0 Kphemerella ...... 3 2 0 0 0 0) Beetiscaeecussoteres 0 1 0) @) 0 0 C@llocons.carecmecese 5 4, 1+(1]|1 [1] 0 Centroptilum,,...| 4 1 0) 0) 8) (0) IBEN=) tS) nqoooasgo90000C 16 13+-[2}/ 1 +f) / (4) [2] 0 Silallviets) Goosnoncc 3-+[2] | 7? 0 0 0 0 Genus [XXII].....| 0 0 5 0 0 0 Isonychia ......... 0 1+?1 |0 0 (0) 0) Coloburus ......... 0 0 0) 0 2 0 (Cronicus) ......... (1) 0 0) 0 0 0 2 0 te) 2 Heptagenia ...... 20 16 on the Ephemeride. SPECIERUM DISTRIBUTIO GEOGRAPHICA. Symbola () species fossiles, [ ] ambigue definitas, claudunt. Oligoneuria anomala » ” ” Lachlania Campsurus fs rhenana [pallida] Trimeniana abnormis . latipennis . albifilum . albicans cuspidatus quadridentatus . [puella] Asthenopus curtus ” dorsalis Polymitareys virgo Palingenia Pentagenia ” Hexagenia Savignii indicus (macrops) longicauda lata . vittigera quadripunctata . albivitta [atrostoma] (decolorata] limbata bilineata . Euthyplocia Hecuba liphemera vulgata ” guttulata . flaveola (myops] lineata danica glaucops immaculata exspectans fasciata serica Potamanthus luteus ” Ferreri Rio Janeiro. Germany ; Turin. Hungary. Umroti District, Natal. Cuba. Para. Para. Brazil. Guatemala, Santarem, Brazil. New Orleans. Para. Brazil. France; Germany; Madrid. The Nile. Hindostan. Fossil in Amber. Central Europe ; Caucasus. Silhet; Sarawak. Illinois; Texas. Illinois. The Amazons; Texas. Brazil. Matamoras; Tamaulipas. Texas; Illinois; Maryland. Hudson’s Bay Ter.; Canada; Mexico ; Hlinois. Vera Cruz; Mexico; Veragua. Texas ; Northern & Central Europe. Albany River ; Canada; Northern United States. Illinois; New York. Illinois. S. England; France; Switzerland. Northern & Central Europe & Spain. Moscow ; Germany ; Switzerland; North Ttaly. Cuna, Hindostan. Hindostan. Ceylon; Masuri, North India. North China. England; France; Germany. Turin. 46 Rev. A. E. Haton’s Monograph Leptophlebia australis . Gen. XIII. australasica furcifera inconspicua dentata strigata {costalis] . A nodularis . : scita Taprobanes annulata . femoralis . dislocans . ; auriculata. Colombie . marginata. helvipes . castanea Krueperi . Picteti ; 0 (prisca) . cincta vespertina. mollis cupida nebulosa . fusca modesta inanis i Tricorythus varicauda . Ceenis +P) macrura . chironomiformis dimidiata . diminuta . hilaris ; fi perpusilla . : [discolor] . Ephemerella ignita . d Betisca Cloeon LP) th [argentata] [oophora] luctuosa . . gibba C eenea. : 5 invaria . $ {consimilis] obesa ‘ 5 dipterum . simile ‘ [subinfuscatum] Tasmania. Sidney ; (Moreton Bay ?). Melbourne ? Adelaide. New Zealand. North Australia. New Holland. Christ Church, New Zealand. New Zealand. Ceylon. Rainbodde, Ceylon. Rainbodde, Ceylon. Cape of Good Hope. Cape of Good Hope. British Colombia. Temperate & Arctic Europe & America. Gt. Britain; Germany; Switzerland. Villeneuve, Vaud. Greece. Geneva. Fossil in Amber. Northern & Temperate Europe. Scandinavia. West Farms, New York. Nova Scotia; Cincinnati; Washington. Albany River ; Illinois. Gt. Britain ; Switzerland. Carinthia ; Corsica. Brazil. Upper Egypt. Temperate Europe. ] England; Prussia; Geneva. ff Temperate Europe. ; E. Florida. { Indiana. Ceylon. Cape of Good Hope. Sicily. Sardinia. England; Berlin; L. of Thun. Temperate Europe; Madrid. Villeneuve, Vaud. Mt. Saléve, Geneva. Nova Scotia; Illinois. Illinois. Illinois; Indiana; Upper California. Europe; the Madeiras; Egypt. England. Provence. on the Ephemeride. [obscurum] russulum . mendax dubium vicinum vitripennis Centroptilum luteolum pennulatum lituratum . stenopteryx binoculatus . debilis scambus . finitimus . atrebatinus Rhodani pheeops tenax buceratus . amnicus alpinus. melanonyx pumilus niger. [culiciformis] [speciosus ] fuscus posticatus . unicolor . propinquus [verticis] . pygmeus . fluctuans . pictus fj undatus fasciatus ferrugineus [albus] . [Ephoron leukon] flavidus . armatus . lacustris . Linnzanus annulatus . [bicolor] . femoratus . alternatus . aridus : 47 France; near Paris ? Europe ; North China. Illinois. Tllinois. Washington. Chili. Alten; Temperate Europe. England. Mt. Saléve, Geneva. Carinthia. Temperate & Arctic Europe ; Hudson’s Bay Territory. Hindostan. England. Val Montjoie. England. Temperate Europe ; the Madeiras. England. England. England. Mt. Blane District. Mt. Brevent, Val de Chamounix. Val d’Entremont; Faucigny. Temperate Europe; Madrid; Corsica. England; ? Sweden. . Sweden. incog. (Europe). Messina. Shippingport. Tlinois; Washington; ? Porto Rico. Ilinois. Indiana. The 8S. Lawrence. Ilinois. Texas. Red River ; New York; Mexico. Brazil. Illinois. Winnepeek River. Belville on the Passaick. Spain. Treland; England. Wales. incog. Trenton Falls, New York. Albany River. Illinois ; Olio. Illinois; 8S. Peter’s River; Washington. Illinois ; Indiana. 48 Rey. A. E. Eaton’s Monograph Siphlurus? siccus ‘ j Tllinois. pe debilis 5 0 Tllinois. Gen. XXII. [tristis] . : Rainbodde, Ceylon. as [econsueta ] ° Rainbodde. op {solida] . é Rainbodde. » (signata] . : Rainbodde. » {marginalis] . Rainbodde. Isonychia manca : C Texas. op [ignota] . : ? United States. Coloburus humeralis . Otago, New Zealand. 5p haleuticus . : ? Melbourne. (Cronicus anomalus) . Fossil in Amber. Heptagenia semicolorata . Gt. Britain; Switzerland; Austria. > [semitincta] . Versoix, Lake Leman. of nivata : Mt. Blane District. 4s borealis . 9 Finmark. .s canadensis : Canada. ar fusca 5 ; Albany River. Hy cupulata . : N. China. “5 basalis . 5 Lake Winnipeg. - maculipennis . Illinois; New York. x eruentata . : Illinois. 5) simplex . ; Tllinois. 3 pulchella . : Illinois. x [terminata] : Illinois. oF interpunctata . Illinois ; Indiana. 99 flavescens . : Tlinois. rs vitrea : ; Albany River. + [nigrimana] . France. %) flavipennis : England; France; Switzerland. i elegans . : Temperate Europe; Hammerfest. 4p flUminum . ; Germany; Lake Leman. >" sylvicola . : Spain. ‘s volitans . ; England. * alpicola . : Mt. Blane District ; Carinthia. = iridana . ; Altvater. 3 {annulifera] . Hindostan. 5 luridipennis . Albany River; S. Lawrence. a flaveola . , Tennessee; West Farms, New York. 0 vicaria . . Canada. me [tessellata, Hag.] Puget Sound; Washington. 5 venosa . : Scandinavia; Corsica; and Temperate Europe. As longicauda . Gt. Britain. : > [angustipennis] Madrid. _ Picteti . ; Tessin; Ober Engadine. 3 insignis . f England. + montana . 3 Mt. Brevent ; Austria. 5 lateralis . ;: England, Wales; Carinthia; ? L. Leman; Spain. oP [Bellieri] . ‘ Sicily. on the Hphemeride. 4.9 Heptagenia zebrata.. : Corsica. is [gemmata] : “Circa aqueductum Fodinarum Idren- sium.”’ PA guttata . : Valdivia, Chili. 5 torrida . e Philippine Isles. aS determinata . Java. Thus, the number of described recent species of Hphe- meride is about 178, exclusive of ten which are either hardly determinable, or probably mere conditions of well- characterised forms which have been otherwise named. There are three fossil species determinable. EPHEMERIDARUM GENERUM RECENTIUM SUMMA ANALYTICA. Metathoracic wings present Metathoracie wings wanting 1 3 long subequal caudal sete 2 Cloeon, Pl. IL. f. 7. Cross-veinlets of wings numerous towards the anterior margin; Gen. XII; Tricorythus, Pl. II. f. 3. Cross-veinlets of wings disposed in very few transverse rows ; Cenis, Pl. II. f. 4. Longitudinal neuration of posterior wings considerably complex Longitudinal neuration of posterior wings ee Cs 23. pect 4 nervures only) Lateral margins of the hinder abdominal segments produced into a slender subulate process on each side; Lachlania, Pl. I. f. 1; Oligoneuria, P11. f. 2. Posterior wings very narrow ; Centroptilum, Pl. II. f. 8. 6 Il. f. 9, Pl. Il. £. Posterior pairs of legs well developed a Posterior pairs of legs very short and feeble . Cross-veinlets in the marginal area before the nodus of the an- terior wing, few and indistinct Cross-veinlets in marginal area before the nodus of anterior wing, numerous and well defined; Polymitarcys, P1.I. f. 5. Terminal margin of anterior wing free from cross-yeinlets ; Campsurus, Pl. I. f. 4 Terminal margin of anterior wing here and there met by cross- Lateral margins of the hinder abdominal segments simple 5 veinlets; Asthenopus, Pl. I. f. 3 TRANS. ENT. soc. 1871.—ParT I, (MARCH.) 2 long caudal sete; the third rejected ; Gen. “XXII. 993 Posterior wings ee obtuse ; Gen, XXTT. 9° 2s Baetisy PI. ne 50 Rey. A. E. Haton’s Monograph Oculi even in both sexes . 14 102 Oculi in ¢ ae polapholes WslOey "intersected by a slightly i im- pressed line. “ 11 Penultimate segment in beneath prtonged into a short iBT lamellar process ; . . Penultimate segment in 9 beneath simple ; Potamanthus, 1PAL, OT 3% Ie Proximal joint of leg of forceps of ¢ short . 13 122 Proximal joint of leg of forceps of ¢ the longest ; Gen. OMe B23 - Leptophlebia, Piet) 2-2: 13 Hinder tarsi 4-jointed; Ephemerella, Pl. I. f. 5. Hinder tarsi 5-jointed; Coloburus, Pl. III. f. 3. Penultimate segment in § beneath prolonged into a short 14 lamellar process . : : ; Penultimate segment in 9 beneath simple c : : 16 Cross-veinlets crowded, indistinct ; Botisca, Pl. IT. f. 6. 1} Cross-veinlets regular, well-defined ; Tsonychia, Pl. IIT. f. 4; Heptagenia, Pl. III. f. 5. 16 3 long caudal sete . < ‘ : : : . P - ey 2 long caudal setz : : : : ; ; : 5 18 Cross-veinlets crowded, well-defined ; Huthyplocia, 2 , Pl. 1.f.8. 172 Cross-veinlets regular, well-defined ; Pentagenia, 2, Pl.1. f£. 6; Ephemera, Pl. I. f. 9. 18 { Hinder tarsi 5-jointed ; ne Tk IML, 1, PA, Hinder tarsi 4-jointed .. : 5 » ws | Middle seta very short; Pentagenia, g, PILI. £6; Hexagenia, 19 TEMG Te a Pc Middle seta rejected ; Palingenia. | Materials for a complete analysis of the genera of the Hphemeride are not at hand. Of some, only one sex is — at present known: jof others, only mutilated specimen deprived of legs, or examples with the legs shrivelled up in drying, so as to prevent their proportions being made out, are in Huropean collections. Our grounds for establishing comparisons between the genera are conse- quently very limited. In determining from the imago the affinities of a genus, the principal points to be noted are,—First, the neura- tion of the anterior wing; Secondly, the structure of the hinder pairs of legs ; and, Thirdly, sexual peculiarities. _ In the neuration of the anterior wing, the most im- portant features are the disposition of the nervures dis- ‘ on the Hphemeride. : 51 tributed to the inner and terminal margins. It should be noted whether the longitudinal neuration is sparse and simple, or plentiful and complex: next, whether the eross-veinlets are scanty or numerous (especially in the costal and subcostal areas -before the nodi) : and then, whether the interneural veinlets of the terminal margin (if there be any of them) are derived from the longitu- dinal nervures, or from the cross-veinlets, or from the terminal margin only; and if they are only from the margin, it should be ascertained whether they are soli- tary or in pairs. Minute details of neuration are value- less ; only the general aspect or style of the neuration need be studied. In the hinder pairs of legs, the length of the tibie, as compared with the femora, should be noted; then the number of the tarsal joints, and the form of the wngues. If a fifth joint is present in the ¢arsus, its joining with the tibia may be obliterated, or indistinct, or clearly defined. As to the sexual peculiarities, it is important to examine first the oculi. Do the oculi of the male differ from those of the female in size only? or are they also divided into two parts? If they are divided, it must be ascertained whether the divisions are only ascalaphoid (as in Lepto- phlebia), or whether the upper part is elevated into a turbinate protuberance (as in Baetis). Next the forceps should be examined. Are the legs of the forceps sessile (as in Baetis) ? or are they inserted upon a lamellar ex- pictision of the penultimate segment (as in Siphlurus)? ‘What are the relative proportions of their joints? It is lso very important to note whether the female has or jhas not a lamellar extension of the ventral margin of the ‘apex of the penultimate segment.- Next the sete should be examined. Are their joints long, or short? Have ‘they long or short pubescence towards their tips? Is the middle seta as long as the others in both sexes? or abbreviated in both, or rejected in both? Or is it re- jected by, or abbreviated in, the male only? Then it should be noted whether the anterior legs of the male have the femora unusually short, or not; and whether the anterior legs of the female are well developed or rudimentary. It should be ascertained also whether the eggs are extruded all at once, or not. 25 52 Rev. A. EH. Haton’s Monograph Last of all, the form and neuration of the posterior wings (if there be any) should be taken into considera- tion. The abdomen may further be examined as to the mode in which the last segment is finished off beneath; whether by a simple membrane, or by plate-like folds of the integument beneath the insertion of the sete (as in Hphemera and Baetis). In Lachlania, Oligoneuria, and - Cenis, the posterior segments are furnished at the tip. with slender lateral processes; on account of this and other reasons (e.g., the structure of the sete), I am in- clined to consider the first two genera to be allied to Cenis more closely than might be inferred from the arrangement of the genera adopted by me. Heptagenia is the only genus known which possesses a true egg- valve. In the immature insect, the attitude assumed by the subimago during repose is of value in classification. The points to be noted are whether it elevates the anterior — legs, or not. If it does, are they held together, or separated ? Are the wings spread abroad, or held up- — right? Are the caudal sete laid together, or separated? — The average duration of the subimago stage should also be taken into consideration. Does it last only a few minutes, or an hour or two, or a whole day, or longer? or is it the permanent state of the female ? | In the nymph, the habit of the insect is of first import- ji | | ance. Does it burrow, or creep? or does it run and swim actively? These points can be inferred from the structure of its mandibles, lees (especially the anterior’ legs), sete, and antenne. Next in importance is thy structure of the branchial organs. Are they lamince fringed with short slender processes ? and, if so, are they simple (as in Cenis), or compound lamine (as i | Hphemera)? Or are the lamine fringeless? If so, are\ the lamine simple (as in Baetis), or compound (as im Cloeon), or complex (as in Hphemerella)? or are they furnished at the base with a fascicle of branchial filaments | (as in Heptagenia)? Betisca has the branchie concealed under an extension of the dorsum of the thorax. The labium, with the two pairs of maxillee and their palpi, have next to be considered. Are the palpi of the lower maxille two-jointed, or three-jomted ? Last of all, the number and position of the branchial organs must be noted, ~ on the Ephemeride. 53 and their relative sizes. In some genera there is a minute pair of branchial processes on the first abdominal segment, which is very liable to be overlooked. Some- times the anterior pairs of plates differ in texture and form from those of the segments behind them. These last items have more to do with the determination of the order of succession of genera closely allied to one another, than with the determination of the position of a genus in the family at large. Arrangements of genera founded upon the structure of the imago, or of the nymph, alone, can be only tem- porary. ‘The relations of genera can be definitely ascer- tained, only by taking into consideration all the peculiari- ties presented by the structure of representative species at the principal epochs in the course of their develop- ment from the egg. NOTANDA. long. al.=longitudo coste ale antice. exp. al.=explicatio alarum anticarum. set.=longitudo setarum caudalium; e.g., sub Ephemera vulgata legitur “ set. 33 & 34-32 & 36 mm.” i. ¢., longitudo setarum exterioris 33-32 mm., interioris 34-86 mm. mm.=millimetres; mensurd Gallicé adhibita. im. & subim.=imago et subimago. Symbola descriptionibus preeposita significant,— Vv. S.=viyum specimen. vy. vy. Ss. = vidi specimen vivum. 8. S.=specimen siccum. VY. 8S. 8. vidi specimen siccum. } !=vidi specimen genuinum siccum. * Cum terminologid doctoris Julii Miiller,* terminologia colorum una et eadem est, preter in locis sequentibus :— Testaceus et luridus concolores putantur. Isabellinus, Miil,=furfurosus (Anglice, bran-colour). Fuscus et umbrinus, Miil., similiterque olivaceus et pistazinus, Miil., con- colores esse putantur. Ferrugineus= Anglice, steel-blue. Rubiginosus= Anglice, rust-red. * Terminologia Entomologica. J. Miller. Briinn, 1860. od Rev. A. E. Eaton’s Monograph Genus Lacubania. (Ada, Pi, tos 1) Lachlania, Hag. 1868. Imago ¢. Caput transversum, ocellis subeequalibus ; prothorax etiam transversus. Ales quatuor. Sete dua. In dentibus segmentorum abdominis latera producuntur. Lachlania abnormis. L. abnormis, Hag. 1868. imacowgrss. Sy * Fusca, subtus pallida, capite, pro- thorace atque pedibus nigris. Alze grisee, pellucide, crassioribus nervorum griseo-fuscis: in anticis prima, secunda, et quarta venarum longitudinalium furcatee sunt, et serie una ‘rasmmerieruaaisienn intersecantur ; im posticis venarum trium longitudinalium media furcata est, et nervi transversales absunt. Setze albidee.” (Hag. abstract.) Long. corp. ? 6-7, set. 5, exp. al. 18-19 mm. Hab.—Cuba. Dr. Hagen gives “ ovivalvula transversa” as a cha- racter: but as he called the ventral process of the penultimate segment of Leptophlebia an egg-valve, itis | uncertain whether Lachlania has a true egg-valve or | not. Genus OLIGONEURIA. Oligoneuria, Pict. 1843-5. ( Neuratio alarum, in hoc genere, pro singula ee diversa est. Imago. Oculi integri; prothorax transversus. ‘Aad quatuor ; antice nervis longitudinalibus robustis parum divisis, et nervis transversalibus marginem costalem so- lum et ale apicem versus: in processti tenui hbero basis alee anticee supra singulariter excurrit. Pedes debiles, tibiis anticis femoribus multo longioribus ; tarsi pree- cipue infirmi, quadri-articulati, unguibus obtusis. Abdo- minis segmenta singula intermedia lateribus in processi tenui utrinque producta. Sete tres equales. Pedes forcipis maris quadri-articulati, proximo articulorum longissimo. Ovivalvula femina caret. on the Bphemeride. 5d The curious species comprised in this genus appear in considerable numbers towards evening. The males of the extra-European species being at present unknown, I have not separated the group, in spite of the differ- ences of their wings. My divisions of the genus may be tabulated as follows :— Ale anticee radius et subcosta confluentes : nervorum longitudinalium sequentium primus— et tertius bifidi; secundus obsolescens bipartitus :— O. Trimeniana : bipartitus; secundus simplex ; tertius— bifidus :—O. rhenana et pallida, (Pl. I. fig. 2). simplex :—O. anomala. Oligoneuria anomala. O. anomala, Pict. 1843-5. Imago ?,s.s. ‘‘ Corpus fuscum vel brunneum. Ale pallide grisez ; antice: nervis transversalibus circa sex. Setze longe pubescentes, pube sparsi bases versus.” (Hag.) Long. corp. ? 13, set. 8, exp. al. 32 mm. Hab.—Rio Janeiro (Koll. MS.). Oligoneuria rhenana. (Genitalia maris, Pl. III. fig. 7; caput, fig. 7a.) O. rhenana, Imh. 1852. O. anomala, pars, Pict. 1843-5. Subimago, v. v.s. Ale fumatie, costas versus satura- ‘ tiores. Setarum bases glabrae, apices pilosi. ) Imago, v. v. s. Oculi atri; caput et thorax lutes- \\ centes. «© Abdomen albicans, segmentorum apices versus ochraceo tinctum,” juncturis obscuris, et setis albis. Pedum antici fuliginosi ; posteriores albi, femoribus cre- taceis et unguibus obscuris. Alarum crassiores nervorum saturate fumati. @. Corpore lutescenti, setis glabris; et nervis alarum albicantium lutescentibus.” (Hag.) Long. corp. ¢ 9-12, ¢ 7-9; set. ¢ im. 15, subim. 10; set. 2 im. circa 4, subim. circa 3; exp. al. ¢ 23, Q 28 mm. Hab.—The large rivers of Germany; and at Turin (Hag.). July and August. I have taken specimens between Cologne and Bonn, in the evening, at the end 56 Rev. A. E. Eaton’s Monograph of July, on a Rhine steamer; but, unfortunately, I neglected to make a memorandum of the posture of the subimago; they were blown along the deck of the steamboat helplessly, being unable to maintain their footing. Oligoneuria pallida. (Genitalia, Pl. III. fig. 8. a-c; caput, fig. 8.) O. rhenana, var. pallida, Hag. 1855. Imago, s. s. O. rhenane similis esse videtur. Dr. Hagen forcipem delineavit; sed figura a forcipe O. rhenane longe discrepat. fiong. corp. ¢ 9, 9 7; set. 3 10, 9 4; expral @ 20, 9 24 mm. Hab.—Hunegary. I have some doubt about the correctness of Dr. Hagen’s figure of the forceps; for the relative propor- tions of the joints resemble those of the forceps of Baetis or Ephemera. There is great danger of misrepre- sentation being the utmost that one can extort from dried specimens. Oligoneuria Trimeniana. (Processus ventralis penultimi segmentorum, ¢, Pl. Terie O8.5) O. Trimeniana, McLach. 1868. Imago, v. s. s. ?. Caput et thorax lutei, pectore lutescenti. Ale pellucida, venis fumato-albis. Pedes | albicantes, femoribus furfurosis. Sete cretacez, ad junc-} turas apices versus sub-pilose. Ovee virides. Long. corp. ? 12, exp. al. 415 mm. Hab.—Mapulnulo Mission Station, Umroti District, Natal. March. The wings have a satiny lustre. { Genus CAMPsuURUS. (Ala antica, Pl. I. fig. 4.) Ephemera, Perch. 1836; Palingenia, pars, Pict. 1843-6 ; Campsurus, Etn. 1868. Imago. Oculi integri. Ale quatuor, anticee reticulo subtili. Pedes debillimi, unguibus longis tenuibus obtusis f / 1% 4 t on the Hphemeride. 57 conformibus. <4 seta media caret; pedum posteriores brevissimi, antici longi femoribus imprimis brevissimis ; ultimi segmentorum latera breviter producuntur. ? sete tres equales; pedes breves debillimi (etiam antici); ovivalvula caret. The genus Campsurus occupies in America the posi- tion of Polymitarcys in the Old World. Many species of this genus are so alike in colour that it is difficult to discover. the females. Their habitat is probably limited to large rivers of a tolerably high temperature. Campsurus latipennis. (Genitalia maris, Pl. III. fig. 10, 10a.) Palingenia latipennis, Walk. 1853 (non var.). Imago, v. s. s. 6 @. Thorax fusco-luteus; pro- thorax tumescens, a fronte angustus, sulco longitudmali medio, et foveis lateralibus, alter pone oculos subtrian- gulari, alterdque apud coxam utrinque. Alarum anticarum area marginalis usque ad tertiam partem ab apice fusces- cens, nervis transversalibus tenuibus subrectis simplicibus paucis claudentibus. Pedes antici fusci. Abdomen supra lined elevati longitudinali media, et posterioribus seg- mentorum fuscis; infra testaceum. Set cretacex. hongeeorpy. 99-7; al. ¢ 8, 9 9;-set.. ¢-22imm. Hab.—Para. Campsurus albifilum. (Genitalia maris, Pl. III. fig. 11.) Palingenia albifilum, Walk. 1853. Imago, v.s.s. ¢. Thorax fusco-testaceus; prothorax veluti in sp. preecedente. Ale pellucidz, anteriores ner- vorum cretacei; transversales apicales arez marginalis anticee pauci subrecti. Pedes antici fusci, coxis testaceis. Abdomen ochraceum, setis albis ; segmentorum apicalium quatuor, ceeterum juncture, et lez longitudinalis ele- vate dorsalis margines, cinereo tinct. Forceps et penis pallide lutescentes. Sete albe. Long. corp. ¢ 12, al. 13, set. 47 mm. Hab.—Para. 58 Rev. A. E. Haton’s Monograph Campsurus albicans. g Ephemera albicans, Perch. 1836; Palingenia albicans, Burm. 1859. Imago, s.s. Prothorax lutescens, latera versus viola- ceus; meso- et meta-thoraces fulvi. Ale anticealbicantes, crassioribus nervorum et bases versus violaceo tincte ; alee posticee fere in toto alba. Pedes albicantes, tibus et femoribus anticis solum violaceis. Caput nigrum. Abdomen pallidum, apicem versus fulvum. Femina in Cat. Brit. Mus. descripta a mare C. albi- cantis longe discrepat. Pro specie innominata optime habebitur. Long. corp. ¢ 10, exp. al. 30 mm. Hab.—Brazil. (Perch.) Campsurus cuspidatus, n. sp. (Genitalia maris, Pl. ITI. fig. 12.) Imago, v.s. s. d. Prothorax gibbus, virescenti-mu- rinus. Ale albee, vitrine, invarie. Abdomen supra fumato-albidum, infra fere cretaceum. Long. corp. ¢ 10°5, al. 11 mm. Hab.—Guatemala. (De Selys Longchamps.) The name cuspidatus indicates the form of the last ventral plate. Campsurus quadridentatus, n. sp. (Genitalia maris, Pl. III. fig. 13.) Imago, v.s.s. ¢. Thorax et pedes pallide testacei. Ale opace; antice subcostis et radiis nigricantibus. Ab- domen ochraceum, atrescenti-umbratum, preecipue apicem versus, et lined longitudinali media atra in segmentorum primis sex. Long. corp. 6 12, al. 13 mm. Hab.—Santarem, Brazil. (Bates.) June. Named from the form of the last ventral plate. Campsurus puella. Palingenia puella, Pict. 1843-5. Imago, 2 s.s. ‘Caput et thorax lutescentes: pedes fuscescentes, apicibus femorum pallidis. Prothorax _on the Bphemeride. 59 tumescens, margine antico in angulo prominente pro- ducto.”” (Pict.) Exp. al. 9 26 mm. Hab.—New Orleans. It is doubtful whether this species can bere-determined. Genus ASTHENOPUS, nov. gen. (Ala antica, Pl. I. fig. 3.) Palingenia, p., Walk. 1853; Campsurus (B), Htn. 1868. Imago. Oculiintegri. Al quatuor. Pedes debiles veluti in Campsuro. 6 Sete duz longe ; pedes forcipis tri-articulati; prothorax transversus. ¢ Seta intermedia brevissima, vel obsoleta. The wing figured belongs to an undescribed species from Texas, specimens of which are in Mr. M’Lachlan’s collection. Asthenopus curtus, n. sp. (Genitalia maris, Pl. ITI. fig. 14, 14 a b.) Palingenia albifilum, var., Walk. 1853; P. curta, Hag. MS. 1861; Campsurus curtus, Ktn. 1868. Imago 3, v.s.s. Prothorax transversus piceus ; meso- et meta-thoraces lutei. Alee antice obscurate costas versus, nervis transversalibus areze marginalis apicis paucis, sim- plicibus et subrectis. Pedum antici fusci; posteriores lutei. Abdomen. supra nigricans, subtus ochraceum, immaculatum ; segmentum singulum supra lined longitu- dinali media, punctoque rotundato utrinque, pallidioribus. Setze albee. Long. corp. g 8, al. 10, set. 35 mm. Hab.—Para. Asthenopus dorsalis. Palingenia dorsalis, Burm. 1839. Imago ¢,8. 8s. Prothorax transversus, tumescens, lutescens, maculi in medio violacei. Caput nigricans. Ala antica nervis fuscescentibus, et margine costali vio- 60 Rey. A. H. Haton’s Monograph laceo-fusco. Pedes antici nigricantes. Abdomen fulvo- griseum, striga supra fusca in medio, postice quam antice latiori. Sete albicantes. (Pict.) Long. corp. @ 11, exp. al. 38 mm. Hab.—Brazil. (Burm.) Genus PoLymirarcys. (Ala antica, Pl. I. fig. 5.) Ephemera, p., Ol. 1791; Palingenia, p., Burm. 1839 ; Polymitarcys, Ktn. 1868. Imago. Oculi integri; ale quatuor; pedes debillimi, femoribus brevissimis. 6 Forcipis pes vel quadri- vel tri-articulatus, secundo articulorum longissimo. Setarum media est brevissima. Ungues antici tenues, obtusi et impares. ? caret ovivalvula, et setas tres equales habet. Polymitarcys virgo. (Genitalia maris, Pl. III. fig. 15, 15 a b.) Bphemera virgo, 01.1791. H. marocana ?, Fab. 1793. EH. lutea, Pz. 1804. Palingenia horaria, Burm. 1839. H. albi- pennis, Voigt, 1840. Palin. virgo, Pict. 1843-5. Subimago, v. s. s. Imagine pallidior, setis pubes- centibus. Imago, v.s.s. 6. ‘‘Oculi atri; caput infra in fronte atrum.’’ Prothorax testaceus; meso- et meta-thoraces lutescentes. Ale albz; nervi transversales apicales areee marginalis simplices et subrecti. ‘‘ Pedes albi- cantes, femoribus anticis infra cum tibiis suis fere in toto atris.” Abdomen cretaceum, griseo-nebulosum apicem versus. Setze et forfex albee. Long. corp. 6 2? 16-17; exp.al. 9 33; set. ¢ im. 23, subim. 18; set. 2? 1m. 13 mm. Hab.—Central Europe, in large rivers (e.g., Paris, Cologne, and Mannheim); Madrid. The subimagines rise from the rivers in immense numbers late in the evening, in August, and soon moult. The species from Morocco is possibly distinct from P. virgo. = ‘ ee on the Lphemeride. 61 Polymitarcys Savignii, n. sp. (Genitalia maris, Pl. III. fig. 16, 16 a.) (Ephemera, Say.1817; Palingenia Savignyt, Pict. 1843-5.) Imago ¢,v.s.s. Capitis vertex cinereus. Prothorax murinus, linea longitudinali in medio atra; meso- et meta-thoraces lutescentes. Ale albzx; antice costis et subcostis in majore parte nigricantibus. Pedum antici eriseo-tincti, posteriores cretacei. Abdomen cinerascens, juncturis, lateribus, ventreque sub-ochraceis, et setis albis. Nervi transversales apicales arez marginalis antice simplices et subrecti. Long. corp. 10, al. 11 mm. Hab.—The Nile. M. E. Pictet has several specimens of this species. Polynvitarcys indicus. Palingenia indica, Pict. 1843-5. Subimago 9,s.s. ‘* Caput parvum, nigricans. Pro- thorax brevis, gibbosus, et fulvus, in medio fuscus. Mesothorax fulvus, strigis longitudinalibus _ tribus, quarum duz alarum radices versus prodeunt. Area marginalis antica violaceo-tincta. Pedes antici fulvi, tibs strigisque in femoribus singulis nigricantibus. Setee parum ciliate, fulvee.” (Pict.) Long. corp. ? 12, exp. al. 30 mm. Hab.—The Hast Indies. Mr. M’Lachlan possesses specimens of two other species, undescribed, from N. W. India and Bombay. Polymitarcys macrops. Palingenia macrops, Hag. 1856. Apex are marginalis antic nervis reticulatis. Species in electro. Long. corp. ¢ subim. 11, exp. al. 23 mm. Genus PALINGENIA. Ephemera, p., Ol. 1791; Palingenia, p., Burm. 1839 ; restricted, Westw. 1840. Nympha fodiens. Segmentorum abdominis 2-7 bran- chiifera; laminée branchiales duplices, et bene fimbriate. 62 Rev. A. H. Haton’s Monograph Palpi maxillares tri-articulati ; inferiores ultimis articu- lorum late expansis. Mandibulee antice longe prolongatz, per-robustz, extrinsecus serrate. Frons bicornuta, cor- nibus dentatis, dentibusque lateralibus. Labrum subro- tundatum, apice acuto. ‘Tibize antice intus dentate. (Corn.) Inter ultimam metamorphosem exuyias alarum mas seepe evertit; feminz tamen subimago seepissime status adultus est, pelle retenta. (Swam.) Imago. Oculi integri. Setarum media est brevissima. Alze quatuor. Tarsi postici quadri-articulati. Ovival- vula femina caret. Forcipis pedes pedicillati, quadri- vel forsan quinque-articulati, proximis articulorum longissi- mis. The nymphs live in burrows which they excavate a little below the water-mark, in the clayey banks of large and tranquil rivers. Palingenia longicauda. (Genitalia maris, Pl. III. fig. 17, 17a.) Hemerobius, Clut. 1634. Hphemera longicauda, O1. 1791. H. fuliginosa, Georgi, 1802. LH. flosaque, Illig. 1802. Senblis marginata, Pz. 1804. H. Swammerdiana, Lat. 1805; H. Swammerdamiana, Shaw, 1806. Pedes postici bi-unguiculati. Imago, v.s.s. d. Alee cervine, nervis luridis. ‘Tho- rax luteus; prothorax longitudinaliter quinque-striatus,” (Pict.). Tarsorum posticorum primus, secundus et tertius articulorum subzquales, quarto paulo breviores. Ungues tenues conformes. Abdomen supra saturate um- brinum. Pedes, venter, setaque, pallide lurido-ochracei. Long. corp. ¢ 23, al. 24, set. 70 mm. (Pict.) Hab.—The large rivers of Central Europe (e.g. in Ger- many, Hungary, Austria, and the Netherlands); also in the Caucasus. About Midsummer. Swammerdam’s supposition, that the aquatic stages of development occupy three years, seems merely a gratuitous surmise ; for he reared no specimens, and founded his conjecture upon the differences of size presented by the nymphs alone. But though in this instance Swammer- dam was inaccurate, his famous treatise will remain a monument of his perseverance, and his extraordinary powers of research. f on the Ephemeride. 63 Palingenia lata. (Genitalia maris, Pl. III. fig. 18, 18 a b.) Palingenia lata, Walk. 1853. Tarsi postici uni-unguiculati. Adult. g, v. s. s. Ale et thorax fuliginosi. Pro- thorax lineis longitudinalibus fuscis impressis quinque, viz.: in medio una, latero-dorsalibus duabus, alterisque intermediis duabus. Pedes sub-fuliginosi, vel testaceo- cervini; tarsorum posteriores uni-unguiculati, proximis articulorum paulo ceteris longioribus. Abdomen supra fuscum. Sete lutescentes pilose. Long. corp. ¢ 20, set. supra 70, exp. al. 43 mm. Hab.—Silhet and Sarawak. The specimens from Borneo have paler legs than those from India. Genus PENTAGENIA. (Ala antica, Pl. I. fig. 6.) Palingenia (A), Walsh, 1862; Pentagenia, Walsh, 1863. Imago. Ale quatuor. Oculiintegri. Setarum media in ¢ brevissima, in ¢ ceteris parum brevior. Tarsus posticus quadri-articulatus; articulorum tres priores eequales, et quarto breviores; ungues dissimiles. Femina caret ovivalvula. Pedes forcipis quadri-articulati, secundo articulorum longissimo. Pentagenia vittigera. (Genitalia maris, Pl. IV. fig. 1.) Pal. vittigera, Walsh, 1862 ; Pent. vittigera, Walsh, 1863. Subimago. “ Ale opace, flavescentes.” Imago, v. s. s. ¢. “QOculorum partes superiores exemplaris viventis flavescentes, inferiores rubiginose.” (Walsh.) Medium dorsi fuliginosum ; latera venterque testacea, paucis segmentorum apicalium flavis exceptis. Nervi alarum pallidissime testacei, vel electro colorati ; plurimis nervorum transversalium in area’ marginali, puncto nodali subcostz, lineique infra eandem in quoque nervorum (preter unum) sequentium duorum, atris. Pedes 64. Rev. A. E. Haton’s Monograph subtestacei; antici apicibus.femorum juncturisque tarso- rum fuscis. Apud segmentorum abdominis juncturas dorsales, linezw flavescentes duz breves divergentes sunt. Setee albz pubescentes. ? simillima, pedibus sub-gambosis. Alee, bases ver- sus, et in arels marginalibus imprimis, lurido tinctee. Long. corp. ¢ 17- 19;, 9 17-205 al. 18-19 setts 40-50 & 5, subim. 18 & 4°5; set. 2 13 &10°5-20 &15 mm. Hab.—Illinois and Texas. Pentagenia quadripunctata. P. 4-punctata, Walsh, 1863. Subimago. ‘ Alse opace albicantes.” Imago 2. ‘“Striga dorsalis picea in segmento sin- gulo abdominis hexagonum symmetricum format. Ala antica in medio serie curvata punctorum fuscorum ne- bulis parvis cinctorum ; viz.—in costa uno, unoque in nervorum sequentium quarto, sexto, et nono. Long. corp. 19°5; exp. alar. 40; set. 9? 22°5 & 19°5, subim. 17 & 14; set. ¢ subim. 15 & 3 mm. Hab.—tIhnois. Genus HEXAGENIA. (Ala antica, Pl. I. fig. 7.) Baetis, p., Say, 1824; Ephemera, Guér. 1829-43; Palin- genia, p., Pict. 1843-5; Palingenia (B), Walsh, 1862; Hexagenia, Walsh, 1863. Nympha fodiens a Dom. Walsh, in “The American Naturalist, Oct. 1868,” figuratur. Imago. Oculi integri. Setarum media brevissima. Alee quatuor. ‘Tarsus posticus quadri-articulatus, primo articulorum vix secundo longiore; ungues dissimiles. Ovivalvula femina caret. Pedes forcipis quadri-articulati ; articulorum secundus est longissimus. Hexagenia albivitta. (Forceps, Pl. IV. fig. 2, 2'a:) Baetis albivitta, Walk. 1853. Palingenia continua, Walsh, 1860. Subimago paulo imagine obscurior. Imago ¢,v. s. s. Dorsum atrum, striga longitu- dinali lati media nivea, in prothorace oblongi; in on the Ephemeride. 65 meso- et meta-thoracibus mitriformi, et in abdomine marginibus serratis, claudente in segmentis singulis api- calibus lineas duas breves divergentes atras. Venter sub-hepaticoloratus, striga longitudinali testacea, atque apicibus seementorum obscuratis. Ale vitrine, pallide fuliginoso tincte, nervis piceis ; anticarum coste fusce ; posticarum nervi transversales obscure marginati. Pedes testacei ; antici fuscescentes, tarsis atris, ultimis articu- lorum fuscis. Sete cervine, fusco cincte. Long. corp. ¢ 15, al. 15; set. im. 35, subim. 23 mm. Hab.—The Amazons and Texas. Mr. M’Lachlan has a specimen of an undescribed In- dian species, in some respects closely related to this. Heaagenia (?) atrostoma. Ephemera atrostoma, Weber, 1801; Palingenia atrostoma, Pict. 1843-5. «K. flava, dorso alisque fuscis, ore oculisque atris. Thorax marginatus canaliculatusque. Abdomen cauda biseti, setis longissimis flavis.”? (Weber.) Hab.—Brazil (Weber). Hewxagenia decolorata. Palingenia decolorata, Hag. 1861. Imago in spiritii ztheris conservata. ‘ Lutea; caput fusco-nigrum ; pedum antici nigricantes, posteriores lutei; abdomen luteum, strigis lateralibus obscure fuscis, et setis luteis; ale vitrinew, flavescenti tinct, nervis luteis, subcostis fuscis exceptis.” (Hag.) Long. corp. 16, set. 30 (?); exp. al. 30 mm. Hab.—Mexico; Matamoras; Tamaulipas. Common. (Hag.) Perhaps this is only a colour variety of the following species, but I am unable to decide the point. Hexagenia limbata. (Forceps, Pl. IV. fig. 3, 3a.) Bphemera limbata, Guer. 1829-43 ; Palingenia limbata, Pict. 1843-5. Palingenia bilineata, Hag. 1861. Subimago, v.s.s. Al pallide flavicantes, plurimis nervorum transversalium corvinis. Setz pilose. TRANS. ENT. soc. 1871.—parRTI. (MARCH.) F 66 Rey. A. H. Haton’s Monograph Imago, v.s.s. 6 “Oculorum partes superiores acute virescenti-flavee, partes inferiores nigre. Sete fusce, proximis dimidiorum articulorum pallidis.” (Walsh, v. 8.) Strigze laterales dorsi prothoracis nigra retro produ- cuntur, et findentesjuxta bases alarum, ¢ circa mesothoracis apicem desinunt. Alarum nervi plerumque picei, bases versus pallidi; interdum vero longitudinales lutei, et transversales solum picei sunt. “‘Pedes antici fusci, basibus plerumque artictlorum tarsalium 2, 3, 4, albi- cantibus vel flavescentibus; posteriores acute flaves- centes, paucis articulorum tarsalium cum apicibus, quin- toque in toto, fuscis. Abdomen supra striga in medio fusca, lineisque lateralibus obliquis ab apicibus segmen- torum “quibus in trigonis paribus flavicantibus vel fulvescentibus latera dorsi finduntur.” 9g. A ¢ innervis alarum vitriris (“ hyaline” Walsh) vel flavescentibus discrepat. Setze flavee. Long. corp. ¢ 20-21, 9 22; set. ¢ 40, 9 subim. 20; exp. al. 3 38, ? 30 mm. (Pict.) Hab.—Arctic America, Texas and Mexico; in large rivers. Mr. M’Lachlan has many specimens. Hexagenia bilineata. (Forceps, Pl. IV. fig. 4.) Baetis bilineata, Say, 1824. Palingenia viridescens & occultata, Walk. 1853. Baetis angulata, Walk. 1853. Palingenia limbata, Hag. 1861. Palingenia bilineata, Walsh, 1863. Subimago, v.s. s. Alee griseze, nervis piceis, bases versus lutescentes. Alarum posteriores apud margines terminales atro hmbatz. Imago, v.s.s. o ‘ Oculorum dimidiorum superiora cinamomeo-fusca, inferiora atra”? (Walsh, v.s.). Pedum antici picei, apicibus tibiarum et proximis articulorum tarsorum atris; ‘interdum 2, 3 et 4tus articulorum bases versus pallidiores sunt: posteriores in s. s. ochracei; vel (veluti in v. s.) femoribus obscure virescentibus, cum genubus, tibus, tarsisque fuscis. Nervi alarum picei; harum anterior areis me re.nal et submarginali, atque posterior margine termine..:, ruscis. Q s.s. ‘* Dorsum prothoracis in fronte et ad latera nigrum. Abdominis striga dorsalis maculam cretaceam on the Ephemeride. 67 oblongam vel triangulam apud latera segmenti singuli utrinque relinquit; striga ipsa segmentorumque apici- bus fuscis.”” (Walsh.) Long. corp. ¢ 17-21, 2? 21-29; set. ¢ 42-51, subim. 18; set. 9 20, subim. 18-19; al. ¢ 17-20, 9 21-23 mm. Hab.—Arctic America, to New Orleans; in lakes and rivers. The Hexagenie are said to appear in suitable localities in astounding profusion. The late Mr. Walsh says he has seen shrubs broken down by the accumulated masses of one species upon them! ‘The name of the shrub, and how many thousand specimens of the Hexagenia in ques- tion go to the pound, are unfortunately omitted from his observations. Genus HurnypLocia, nov. gen. (Alee anticee partes, Pl. I. fig. 8, 8a.) Palingenia, p., Hag. 1861. Imago ¢. Ala quatuor. Seta tres, longs, sub- eequales. Huthyplocia Hecuba. Palingenia Hecuba, Hag. 1861. Imago, v.s. s. ?. ‘‘ Capite nigro-fusco ; prothoraco fusco, polito ; coxis luteis; alis magnis opacis, cervino- tinctis, costas versus obcuratioribus, nervis griseis. Ab- domen supra nigro-fuscum, subtus lutescens; setis _ saturate fumatis.” (Hag.) Long. corp. 22, exp. al. 78 mm. Hab.—Vera Cruz (Sallé) ; Veragua. There is a specimen of this insect in Mr. M’Lachlan’s collection, and another (the type) in that of Baron De Selys Longchamps. The legs are lost, and the colours are so faded, that I have preferred citing the old de- scription to redescribing the species. In what Dr. Hagen suspects to be the male, the undivided eyes are almost contiguous, the median seta is very long, and the an- terior legs are long and feeble. FQ 68 Rey. A. E. Eaton’s Monograph Genus Hpyemera. (Ala antica, in parte, Pl. I. fig. 9.) Bphemera, Lin. 1735.* Nympha fodiens. Segmentorum abdominis 1-7 bran- chiifera: laminarum prime minutissime, bipartite, di- midiis linearibus marginibus integris ; posteriores quoque duplices, sed dimidiis acute lanceolatis, marginibus bene fimbriatis. Palpimaxillares bi- articulati: superiores longi, hirsuti, secundo articulorum primo longiore: inferiores apicibus articulorum ultimorum dilatis, obliquis. Man- dibulze latus externum in cornu prorecto longissimo valde prorsus producitur. Frons breviter bicornuta, cornibus simplicibus. Alis conniventibus erectis, pedibus anticis elevatis et prorectis, sctisque caudalibus subparallelis, subimago quiescit. Setarum laterales inter se approximantur vel subtus vel supra mediam. Imago. Oculi integri; alee quatuor; sete tres longe, subeequales. ‘T'arsi postici quadri-articulati ; articulorum tres priores subeequales ; ungues dissimiles. Pedes for- cipis quadri-articulati, secundo articulorum longissimo. Ovivalvuld femina caret. Species of this genus usually appear in moderate numbers. The apical cross-veinlets of the marginal area of the fore-wing are variable in the same species. The pale spots of the thorax of the subimago, mentioned in the description of H. vulgata, are found in the other . EKuropean species. Ephemera vulgata. (Genitalia maris, Pl. IV. fig. 5, 5a. Maculee abdominales, fig. 5b.) Hphemera maculata, Lin. 1747. EH. vulgata [De G. 1755]; Lin. 1758. H. communis, Retz. 1783. EH. danica, Ronalds, 1856. Subimago, v. v.s. Ale vel flavo-virentes, vel vires- centi-grisex, vel cinerez, nervis fuscis; anticee in medio fusco vel piceo maculate ; nervi transversales maris cor- vino marginati: margines terminales late griseo tincti. * Ephemerum, Hampe (1844), is a genus of the Phascei, an Order of the Acrocarpous Mosses. on the Ephemeride. 69 Vertex capitis maculd lutea: prothorax lineis longitudi- nalibus duabus atris; mesothorax supra macula magna lutescente, ex qui in fronte et a posteriore strigze cur- vate due producuntur; metathorax luteus, maculis L-formatis nigris duabus. Imago, v.v.s. d. Caput atrum, oculis supra fuligi- nosis, infra vel paulo saturatioribus vel nigris. Thoracis tergum aterrimum nitens. Ale virescenti-grisez vel pallidissime flavo-virentes, maculis piceis et nervis atris : posteriores marginibus terminalibus late, et nervis trans- versalibus anguste, griseo tinctis. Pedes olivacei; antici femoribus atro-piceis, et tarsis fuscis; posteriores tibiis tarsisque fulvis, apicibus articulorum ultimorum et ungui- bus fuscis. Abdomen umbrino-olivaceum, juncturis et apicibus segmentorum plus aut minus ochraceis: trian- gulos acutos duos, lineasque interpositas breves duas, segmentorum posteriorum supra quidque habet, infraque lneas longitudinales atras quatuor, viz., duas longas sub-parallelas, et duas breves divergentes: in anteriori- bus segmentorum trianguli in strigis curvatis se conver- tunt, et notule interposite obsolescuntur. Setz fusce, juncturis fuliginosis, atque pubescentes, preecipue apices versus. Forceps fuscus. ? plane omnino mari similis, alis pallidioribus ex- ceptis. Var. $ et 9,v.v.s. Pro maculis trigonalibus, lines curvate segmentis singulis sunt. Long. corp. 14-22; al. ¢ 16-17, 2 18-24; set. ¢ im. 33 & 34-32 & 36, subim. 16 & 17-19°5 & 21; set. 2 im. 22 & 24-26, subim. 17 & 16-18 & 19 mm. | Hab.—Moscow (Oul.); Scandinavia (Zet.); England, , Germany, France, and Switzerland. May and June. This species is plentiful in warm rivers and tranquil streams in England, and in some of the Swiss lakes (e. g., near Brunnig). Ephemera guttulata. (Genitalia maris, Pl. LV. fig. 6, 6a. Maculee abdominales, fig. 6b.) Ephemera guttulata, Pict. 1843-5. Ephemera deeora, E. simulans & Palingenia natata, Walk. 1853. Ephemera natata, Hag. 1861. 70 Rey. A. HE. Eaton’s Monograph Subimago, v. s. 8s. ¢ @?. Ale vix nigricantes, maculis et marginibus nervorum transversalium piceis. Pedes purpureo-brunnei. Sete fuliginose, juncturis obscuris. Imago, v.s.s. &. Ale vitrine, in nervis transversa- libus piceo crebre maculate. Pedes et sete lutei, junc- turis fuscescentibus. Macule magne dorsi abdominis transverse, subquadrate, angulis posticis retro pro- ductis, et lateribus emarginatis: venter bilineatus. ? simillima, alis sparse maculatis. Long. corp. ¢ 11, ? 18-15; al. g 18-15, ¢ 15-19; set. ¢ im. 25, subim. 14; set. @ subim. 15 mm. Hab.—From Northern Illinois and from Connecticut northwards ; in rivers. This species resembles H. vulgata in having the back of the abdomen spotted instead of being merely streaked, and also in the general formation of the male genital organs. M. Pictet’s specimen seems, from the figure, to have been a male imago. Ephemera flaveola. Li. flaveola, Walsh, 1862. Subimago, v.s.s. ‘Ale fumate. Sete obscure et pallide virescentes.” Imago, v. s. ¢. “Vertex capitis rubiginosus ; ter- gum thoracis pallidius. Ale vitrine; anticee apud costas flavescenti-tinctz, et tribus prioribus nervorum longitu- dinalium flavescentibus. Pedes flavescentes; antici apicibus femorum et tibiarum, proximis articulorum tar- Salium et apicibus juncturisque ceterum, rubiginosis. Abdomen flavescens, strigd pallidé utrinque segmentorum 3-7. Setz albicantes, juncturis fuscis.” 9 v.s. Abdomen vitelli-coloratum. Nervi trans- versales alarum fusci, eis ad apices et apud margines terminales exceptis.” Long. corp. ¢ 7°5-9°5, ¢ 9-10°5; set. g im. 20& 14, subim. 12 & 10; set. 9 im. 12 & 10; exp.al. ¢ 17- 19, @ 19-20. (Walsh.) Hab.—Rock Island, Illinois (Walsh) ; and New York. on the Ephemeride. 71 Ephemera myops. EF. myops, Walsh, 1863. “© Hphemerd flaveold major ; oculi eis speciei illius mi- nores, et ab ipsis remoti. Segmentorum abdominis 1-5 rubiginosa, sextum et nonum pallidiora, septimum et octavum flavescentia: vel omnia segmentorum flaves- centia sunt. Long. corp. ¢ 12-13; exp. al. 26-27; set. 27 & 19-29 & 21 mm. Hab.—Rock Island, Illinois.” (Walsh.) Dr. Hagen ad paginam 177 operis supra citati (Walsh 1863) diagnosem quam forsan ad H. myopis varietatem pertineat donavit :— <¢ Ale vitrinee, maculose. Abdomen flavum, immacu- latum. H. danice subsimilis.” Long. corp. 19, exp. al. 42 mm. Hab.—New York. (Hag.) Ephemera lineata. (Genitalia maris, Pl. IV. fig. 7, 7a. Note abdominales, fic. 7b.) E. danica, Pict. 1843-5 (nec Miil.). H. lineata, Kin. 1870. Subimago, v. v.s. Als virescenti-grisex, marginibus terminalibus pallido griseo late tinctis, et nervis trans- versalibus atris. Horum pauci in medio alz antice atro- brunneo marginati sunt, ideoque seriem macularum for- mant. Imago, v. v.s. o. Thorax supra fusco-piceus. Ale vitrine, nervis et maculis atris; antics in areis margi- nali submarginali, atque late marginem terminalem versus, corvino tincte. Pedum anteriores femoribus piceis, tibiis tarsisque atris: posteriores virescenti- erisel, coxis, maculis utrinque femorum, et apicibus junc- turisque tarsorum, atris. Abdomen fusco-virescenti- griseum, apicem versus lutescens: segmentorum poste- riora singula strigis atris dorsalibus sex, infraque lineis longitudinalibus atris duabus ; illarum due longs unaque brevis utrinque supra medium dorsi sunt. Sete fusce, juncturis atris ; forceps lutescens. Strigarum duz breves ab anterioribus segmentorum absunt. 72 Rey. A. E. Eaton’s Monograph @. Simillima mari. Prothoracis tergum virescenti griseum, strigis lateralibus atris duabus. Meso- et meta- thoraces lutei, strigis obscuris inter alas duabus. Ale vitrine, nervis transversalibus atris, et nervis longitudi- nalibus cum areis marginalibus et submarginalibus, vires- centi-griseis. Pedes antici fusci, apicibus femoris, tibie, articulorumque tarsalium, atque tibize basi, atris. Caput ochraceum, circa ocellos luteum, oculis (veluti in @) fuligineo-umbrinis. Long. corp. ¢ 15-20, 9 21-25; al. g 16, 9 20-21 ; set. ¢ 30 & 35-6; set. ¢ im. 24 & 26-25 & 24, subim. 15 mm. Hab.—The Thames, and the Kennet, near Reading ; near Paris; and Genthod, near Geneva. June and July. It frequents rivers or tranquil waters. I have no doubt that the two females referred by Dr. Hagen to #. glaucops, Pict. subim. (Hag. 1863), were specimens of H. lineata. The H. danica of M. Pictet’s collection is #. vulgata, Lin. Ephemera danica. (Genitalia maris, Pl. IV. fig. 8. Macule abdominalis, fig. 8a.) EH. danica, Mil. 1764. EH. maculata, Vill. 1789. 4H. vulgata, Don. 1795. LH. cognata, Ste. 1835-6. H. his- panica, Rbr. 1842. Subimago, v. v.s. Ale: fumate, nervis atris, lutescen- tibus bases versus; vel flavo-virentes. Pedes lutei, tibiis et tarsis posticorum flavo-virescentibus, apicibus articu- lorum nigricantibus. Abdomen flavicans, maculis corvinis, et setis piceis. Imago, v. v.s. ¢.Caput et tergum thoracis aterrima vel picea ; os et prosternum straminea; oculi fuliginosi. Alee vix corvinee; antice areis marginalibus et submar- ginalibus anthracinis, maculis fuscis, et nervis atris. Pedum antici atri; posteriores atro-fusci, juncturis satu- ratioribus. Abdomen cretaceum, postice szpe fusco suffusum: posteriora segmentorum strigas quatuor supra habent, infraque lineas longas, atras vel fuscas, duas ; anteriora lineis intermediis supra carent, vel etiam omni- bus. Sets piceze. sh ncaa on the Bphemeride. 73 @ abdomine pallide ochraceo, lineis et strigis fuscis. Ale vitrinee: antics: in areis marginalibus et submargi- nalibus, posticee margines terminales versus, nigricanti tincte. Pedum posteriores saturate virescente grisei, juncturis atris. Long. corp. ¢ 16, 9 16-23; al. g 16, 2 14-22; set. 6 35 & 30, 2? 14-25, subim. 17 mm. Hab.—Spain (Rbr.); France (Blanch.); England ; Lapland (Pict.); Moscow (Oul.) ; Belgium and Germany. In brooks, streams, and cold swift rivers; from May to July. This is the May-fly of anglers. Fishermen apply various names to it, according to the state and sex ; thus the “Green Drake” (2 subim.), ‘‘ Bastard Drake” ( g subim.), and the ‘‘May-fly” (¢ im.). It frequents colder and more rapid streams than H. vulgata. Mr. E. Brown, of Burton-on-Trent, tells me that on one occasion he saw the River Dove almost covered with the sub- imago, at a part where it is upwards of twenty or thirty feet broad. Ephemera glaucops. (Forceps, Pl. IV. fig. 9.) E. lutea, Sulz. 1776: (nec Lin.). EL. glaucops, Pict. 1843-5. Subimago, v.s.s. Als pallide cervino tinctz, nervis transversalibus atris rufo-cervino marginatis, ideoque in medio alz antice et prope basin maculas formantibus ; margines terminales, vel griseo vel rufo-cervino late tincti; nervi longitudinales flavescentes. Oculi saturate ceesil. Imago 3, v.v.s. Oculi supra vel olivacei vel rubi- gineo-lutescentes, infra saturate olivacei vel purpureo- rubiginei: os flavescens. Corpus rubigineo-luteum vel luteum; “ prothorax maculis fuscis duabus” (Pict.). Alze vitrine, maculis paucis, et margines terminales versus tinctee, longitudinalibus nervorum (transversalibus ipsis atris) et marginibus transversalium, atque areis margina- hibus et submarginalibus, plus aut minus lutescentibus. Pedum antici lutescentes, apud juncturas atri: posteriores testacei, juncturis saturatioribus vel virescenti-grisei. Segmentorum abdominis posteriora singula strigas atras 74 Rev. A. H. Eaton’s Monograph quatuor supra habent, infraque lineas duas ; strigis inter- mediis duabus anteriora segmentorum carent. Forfex lutea, juncturis atris vel piceis. Sete fuliginose, junc- turis obscuris. Q y.s.s. Simillima, sed mari pallidior. Long. corp. ¢ 16-17, ¢ 16; al. g 14-15, 9 16; set. ¢ 23, subim. 17, ? im. 14mm. Hab.—Moscow (Oul.) ; Germany (Burm.); Switzer- land and North Italy. In lakes; the end of July, and August. Ephemera immaculata, n. sp. (Forceps, Pl. IV. fig. 10.) Imago, v.s.s. ¢. Thoracis tergum brunneo-luteum. Pedum antici picei, femoribus bases versus pallidioribus ; posteriores brunneo-testacei. Ale vitrins, immaculate ; antic areis submarginalibus, posticee apud margines terminales, fuliginoso tinct; nervi obscuri. Abdomen fuscum, apicibus segmentorum lineisque spiracularibus saturatioribus. Sete umbrine, invarie. Long. corp. ¢ 10°5, al. 11 mm. Hab.—Cuna, Hindostan. In the Oxford Museum. Ephemera exspectans. Potamanthus exspectans, Walk. 1860. Subimago, v. s. s. Ale pallide furfurose, nervis transversalibus purpureo-brunneis. Tergum thoracis fulvescens, strig’ utrinque fusci. Abdomen lineis longi- tudinalibus tenuibus atris, supra quatuor, infra duabus. Sete olivaceo-lutez, juncturis fuscis. Pedes lurido- ochracel. Long. corp. ° subim. 11, al. 14 mm. Hab.—Hindostan. Ephemera fasciata. (Genitalia maris, Pl. IV. fig. 11, 11a.) Potamanthus fasciatus, Hag. 1858. Subimago, v. s. s. 9. Ale cervine ; antice nervis transversalibus atris, paucis in area marginali juxta sub- on the Ephemeride. 75 costam obscure marginatis, et areis submarginalibus cum crassioribus nervorum longitudinalium lutescentibus. Pedes pubescentes. Imago, v.s.s. 6. Thoracis tergum testaceum. Ale vitrine ; anticz apud costas et apices versus pallide luteo tinctz ; nervorum longitudinales furfurosi, transversales atri, puncto nodali subcostz subfuliginoso. Pedes pallide testacel ; antici tarsis nigricantibus (prioribus articulorum fuscis exceptis) et tibiis fuscis. Abdomen sub-ochraceum vel stramineum, supra lineis longitudinalibus duabus, et macula parva trigonali ad apicem cujusque segmentorum posteriorum utrinque, atris: prioribus segmentorum trianguli absunt. Set furfurose, juncturis saturatio- ribus. Long. corp. ¢ 13-14, al. 14-15, set. ¢ im. 32-40, 9 15 mm. Hab.—Rainbodde, Ceylon ; Masuri, North India. Ephemera serica, nu. sp. (Genitalia maris, Pl. IV. fig. 12, 12a.) Subimago, v. s. s. Ale pallide testaceze; femins plures nervorum transversalium, qui tres priores ner- vorum longitudinalium alz antice interjacent, et pauci ceeterorum, atri; in mari quidew plures etiam ceterorum atri sunt. Imago, v.s.s. ¢. Caput lutescens, circa ocellos rufo- brunneum. Tergum thoracis furfurosum vel brunneo- ochraceum, macula elongata utrinque prothoracis atra. Alz vitrine, nervis veluti in subimagine; punctum rotundatum apud punctum nodale, et alia in mediis ner- vorum transversalium circa medium alee picea; ale pos- ticeeimmaculate. Pedes ochracei, coxis singulis maculis, apicibus femorum et tibiarum anticarum, atque basibus harum, atris. Abdomen pallide ochraceum, lineis longi- tudinalibus atris tribus infra et supra. Sete ochracez, irregulariter atro annulate. ? simillima. Long. corp. ¢ 11, 9 14; al. ¢ 18, 2 18; set. 9 subim. 17 mm. Hab.—Northern China. 76 Rev. A. E. Haton’s Monograph Genus PoTAMANTHUS. (Ala antica, in parte, Pl. II. fig. 1.) Ephemera, p., Lin. 1767. Baetis, p., Curt. 1834, Po- tamanthus, p., Pict. 1843-5; Htn. 1868. Imago. Oculi maris subpartiti. Alee quatuor. Sets tres subeequales. Artus forcipis tri-articulati, proximo articulorum longissimo. Tarsi postici quinque-articulati : articulorum primus brevissimus, tibiee adnatus, vix obso- letus; secundus tertio vel quarto multo longior: ungues dissimiles. Ovivalvula femina caret. Potamanthus luteus. (Genitalia maris, Pl. IV. fig. 13, 13a.) Ephemera lutea, Lin. 1767. HE. marginata, ? Mil. 1776. H. reticulata, Foure. 1785. LF. hyalina, Pz. 1804. Baetis mellea, Curt. 1834. B. marginalis, Burm. 1839. HE. flavi- cans & EH. chlorotica, Ramb. 1842. P. luteus, Pict. 1843-5. Subimago, v.s.s. 6. Ale flavee, costas versus paulo saturatiores, nervis tranversalibus nigris. @. Ale virescenti-griseo tinct, apud bases flaves- centes, nervis flavescentibus. Imago, v. s. s. ¢. Thoracis tergum luteum vel ochraceo-furfurosum. Ale vitrine, flavescentes costas versus ; nervorum longitudinales flavi, transversales atri. Pedum antici sub-furfurosi, tarsis pallidis, sed apicibus tibiarum, juncturis et proximis articulorum tarsalium fuscis; posteriores straminei, unguibus juncturisque tar- sorum obscuris. Abdominis dorsum furfurosum, junctu- ris saturatioribus: segmentum singulum puncto sub- laterali apicali fusco, et puncto basali in linea spiraculari nigro, utrinque. Forceps flavus vel stramineus. Sete sub-furfuros, juncturis piceis, breviterque pubescentes. 2. “Clarior mari, macula fusca super prothoracem, et juncturis tarsorum anticorum obscure fuscis.” (Pict.) ong..corp.. .¢ 10-115 9-9); al..3 12-13; sexpaaleae 29; set. ¢@ im. 15-19, 9 12 mm. Hab.—England (Curt. & M’Lach.); France (Geof.); Germany (Sulz., Pict.). on the Ephemeride: ¢@ Potamanthus Ferreri. P. Ferreri, Pict. 1843-5. Imago, ¢. ‘Thorax pallide furfurosus, macula dorsali pone prothoracem fuscé. Al vitrine, nervis pallidis- _sime flavescentibus, et pluribus transversalium indiscretis. Pedum antici pallide fusci, femoribus coxisque saturatio- ribus, et juncturis flavis; posteriores pallide furfurosi, invaril. Abdominis dorsum fuscum, latera versus fulvum, macula media trigonali super singula segmenta; venter fulvus. Sete et forceps pallide flavee.” Long. corp. ¢ 13, set. 18, exp. al. 30 mm. Hab.—Turin (Pict.). Genus LEprorpHLEBiA. (Ala antica, Pl. IT. fig. 2a.) Ephemera, p., Lin. 1746. Baetis, p., Burm. 1839. Leptophlebia, p., Westw. 1840. Potamanthus, p., Pict. 1843-5. Palingenia, p., Walk. 1853. Leptophlebia (re- stricted) , Htn. 1868. Imago. Ale quatuor. Setarum media est longa vel abbreviata. Oculi maris sub-partiti. It is with very great hesitation that I venture provi- sionally to retain in this genus the majority of the species placed in it. Ignorance of their preparatory stages of development compels one to class them all together, for the present. The group to which L. fusca belongs seems at first sight to be clearly distinct from the rest; but the nymph of L. fusca resembles that figured by Professor Pictet as the nymph of ZL. cincta; and besides this, in the closely allied genus Daetis, it is found that considerable differences in the form and neuration of the posterior wings of species are compatible with their being in the same genus: therefore L. fusca, in spite of appearances, can hardly be separated from the group of which LZ. mar- ginata is the type, with safety. On the other hand, the differences between the group last mentioned, and that of which JL. eupida is the type, are, upon the whole, equivalent to those between Ephemera and Hezxagenia ; therefore it may be a mistake to consider them as sections merely of one genus. When the nymphs are known, all doubts will be set at rest; but not until then. Most likely 78 Rey. A. E. Eaton’s Monograph differences will be detected between the maxille and maxillary palpi of the typical species of the several series, sufficiently marked to require their generic separation. Series 1. Sp. typica, DL. australis. Imago. Tarsus posticus veluti in Potamantho, sed unguibus conformibus uncinatis. Setarum trium media quidem est longa, et ceteris subzqualis: plerumquoe tamen abrumpitur, igiturque cauda biseta esse videtur. Forcipis artus tri-articulati, proximo articulorum longis- simo. Coste alarum posticarum haud excisee sunt (nisi ‘in DL. auriculata). Occurrunt species in Australia, et circa litora Oceani Indici usque ad Promontorium Spei Bone. Leptophlebia australis. (Genitalia maris, Pl. IV. fig. 14, 14a. Ale anticee arezw marg’. apex, fig. 14b.) Ephemera australis, Walk. 1853. Subimago, v. s.s. Alarum anticarum nervi transver- sales fusco vel virescenti-griseo marginati, marginibus plus aut minus coufluentibus: paucitas illorum spatium lambda-forme clarum relinquit, quod apicem angulumque analem oblique interjacit, atque ad basin alee crus breve emittit. Imago, v.s.s. ¢. Tergum thoracis piceum, politum. Ale vitrine, nervis luteo-piceis, et apice areze marginalis antic sub-virescenti-griseo, nervulis transversalibus nu- merosis obliquis et subrectis. Pedum antici fusco-picei, posteriores flavescentes, femoribus obscure nigro bicinctis, et tarsis testaceis. Abdomen luteo-fuscum vel luteo- castaneum. Sete pices. Long. corp. & 7-10, al. 9-11, set. 23 & 22 mm. Hab.—Tasmania. (Brit. Mus.) Leptophlebia australasica, (Ala antica, Pl. IL. fig. 2. Genitalia maris, Pl. IV. fir. 15, 15 a, b.) Baetis australasica, Pict. 1843-5. Subimago, s.s. ‘ Ale nigricantes, nervis saturatiori- bus.” (Pict. e figura.) on the Ephemeride. 79 Imago, v.s.s. 6. Thoracis tergum atro-piceum. Ale vitrine, lurido sub-tincte, nervis atro-piceis; margines virescenti-grisei nervorum simplicium transversalium in areis marginalibus et submarginalibus, in apicibus illarum confluent. Pedum antici atro-picei; posteriores rufo- lutei, femoribus atro bicinctis. Abdominis dorsum rufo- fuscum, venter rufo-luteus ; segmentorum 2-8 singula maculis apicalibus utrinque juxta media rotundatis atris, lineisque obscuris obliquis ex apicibus retrorsum fere ad bases productis. ?. Simillima. Processus ventralis e segmentorum penultimo excisus. Long. corp. d 9-10; al. g 9 11; set. d 32 mm. Hab.—Sidney and (?) Melbourne. Leptophlebia furcifera, nov. sp. (Genitalia maris, Pl. IV. fig. 16, 16b. Areg marginalis apex, fig. 16a.) Imago, v. s. s. g. Tergum mesothoracis brunneo- luteum: metathorax aterrimo-sanguineus. Pedum pos- teriores (exemplar anticis caruit) testacei, femoribus fusco bicinctis, at trochanteribus juxta bases obscure fuscis. Ale: vitrine, iridi-colorate, nervis piceis: antice apex areze marginalis rufo-fusco tinctus, nervis transversalibus simplicibus numerosis subrectis et obliquis; ceeteri ner- vorum transversalium inter costam, subcostam, duosque nervorum longitudinalium sequentium rufo-fusco margi- nati: puncta nodalia subcostz nervique sequentis nebulis parvis fuliginosis, veluti etiam punctum bifurcationis quarti nervorum pone costam, circumfunduntur. Abdo- men sanguineo-atrum, lined in medio longitudinali, lineis spiracularibus, maculisque trigonalibus latero-apicalibus segmentorum 2-6, pallidis. Sete cretacez, juncturis in vices atris. Long. corp. 3, et al. 11, set. 13 & 16 mm. Hab.—Melbourne. (M’Coy.) Leptophlebia inconspicua, nov. sp. (Genitalia maris, Pl. IV. fig. 17, 17b. Areze marginalis apex, fig. 17a.) Imago, v. s. s. g. Thoracis tergum politum. Ale vix lacteo tinct, nervis piceis. Pedes picei; interdum 80 Rev. A. E. Eaton’s Monograph tarsi antici et posteriores pedum pallidiores sunt. Ab- domen apicem versus piceum, segmentis intermediis pallidioribus, maculis parvis ovalibus ad latera dorsi fla- vescentibus. Setee fusca, juncturis saturatioribus. Long. corp. ¢ 5-6, al. 6-7 mm. Hab.—Adelaide. Leptophlebia dentata, nov. sp. (Genitalia maris, Pl. IV. fig. 18, 18a, b; femine, fig. 18c. Aree marginalis apex, fig. 18d.) Imago, v.s.s. 6. Thoracis tergum furfurosum. Alze cano tinctz, nervis transversalibus anguste marginatis: juxta punctum nodale subcostz, atque in areze marginalis apice, sunt labeculee atree: ares marginalis et submargi- nalis obscure luteze. Pedes lutei, juncturis tarsorum piceis, et apicibus tibiarum anticarum atris. Abdomen adusto-umbrinum, apicibus segmentorum saturatioribus. Setee pilose, ochraceee, juncturis obscuris. 2? simillima. Processus ventralis penultimi segmen- torum emarginatus. laong.: corp:: 6''8, 9 7-9 3eal. 6 T1589) 7-135 saber 18, 2 15-16 mm. Hab.—New Zealand. Leptophlebia strigata, nov. sp. (Lamina penult. segment., Pl. IV. fig. 19.) Imago, v. s. s. @. Thoracis tergum fusco-fulvum, lineis longitudinalibus duabus utrinque prothoracis atris, quarum exteriores ad bases alarum anticarum prodeunt. Alze vitrinee, nervis piceis, juxta bases luridz ; anteriores prope costas umbrino-fulve. Pedes saturate furfurosi, femoribus obscure bicinctis, cingulis anticorum plus aut minus confluentibus; tibie tarsique pallidi, juncturis saturatioribus. Abdomen auroreum, strigis duabus lon- gitudinalibus atris (e triangulis truncatis continuis con- structis), lneaque utrinque singulo segmento apicali obliqui nigri: subtus lnea longitudinali simplici in medio aterriméi. Setz pallide rubiginose, juncturis obscuris. Long. corp. Q@ 22, al. 16, set. 23 & 19 mm. Hab.—North Australia. on the Hphemeride. 81 Leptophlebia costalis. Baetis costalis, Burm. 1839; Potamanthus costalis, Pict. 1843-5. Subimago,s.s. d. “ Nigra, linea thoracis ante alas albida, abdomine pedibusque rufo-cingulatis ; alis sub- fumatis, venis omnibus arew marginalis prime et secunda infuscatis.” (Burm.) Long. corp. 3 6.” Hab.—New Holland. Perhaps allied to L. dentata. Leptophlebia nodularis, nov. sp. (Genitalia maris, Pl. IV. fig. 20, 20 b,c. Ala postica, fig. 20a.) Subimago, v.s.s. Ale vix nigricantes ; antice ner- vis transversalibus anguste nigricanti marginatis, mar- ginibus plus minusve apud medium ale et inter medium apicemque confluentibus ; posticee unicolores. Imago, v.s. s. ¢. Thorax supra atro-piceus. Ala vitrine, nervis atris; nervi transversales arez marginalis areeeque submarginalis anguste et obscure marginati, atque inter se apud medium cost iterumque paulo ante apicem approximantes, ita ut peene maculas fingant; ares pars basalis fusca. Pedum antici obscure lutescentes, femore in medio, genu, tibizeque apice nigro circumdatis ; posteriores furfurosi, femoribus solum nigro cinctis. Ab- domen decoloratum. Sete albicantes, bene nigro annu- latee. Long. corp. 5 9; al. 10-12; set. 16 mm. Hab.—Christchurch, New Zealand (Fereday). The penis has no appendages. Leptophlebia scita. (Genitalia maris, Pl. IV. fig. 21, 21a.) Baetis scita, Walk. 1853. Subimago, y.s.s. Ale vel nigricantes, vel fuliginose, nervis atris (transversalibus marginibus saturatioribus) ; antica maculd pallida in medio: apud punctum nodale subcoste hujus, et in apice quoque ares marginalis, tres vel quatuor nervorum transversalium ferme inter se approximant, ita ut maculas saturatiores duas faciant. TRANS. ENT. soc, 1871.—PART I. (MARCH.) a 82 Rey. A. E. Eaton’s Monograph Imago, v.s.s. 6. Thoracis tergum fuliginosuin. Ale vitrine, cano tinctee, nervis fuscis: antica macula basal, marginibus angustis nervorum ares marginalis, ma- culisque super costam duabus quasi in subimagine, fuscis. Posteriores pedum lutei, femoribus in mediis obscure punctatis, tarsisque fuscescentibus. Abdomen saturate fuscum, apicibus segmentorum saturatioribus ; segmento- rum intermedia singula maculis brevibus trigonalibus duabus juxta bases, flavescentibus. Sete albz, vel cer- vinee, juncturis subinde saturatis. Forceps luteus. @ mari simillima. Long. corp. ¢ 6, al. 7-8 mm. Hab.—New Zealand. Leptophlebia Taprobanes. (Genitalia maris, Pl. IV. fig. 22, 22a.) Baetis Taprobanes, Walk. 1853. Imago, v. s. s. ¢. Corpus atrum. Pedum antici atri, posteriores picei. Ale vitrine, pallidissime fusco tinctee, nervis fuscis: antica areis marginali atque sub- marginali fuscis, apicibus saturatioribus, nervis transver- salibus in apice illius simplicibus rectisque. Abdominis juncture pallida. Sete fuscee. Long. al. ¢ 12, set. super 30 mm. Hab.—Ceylon. Leptophlebia annulata. (Genitalia maris, Pl. IV. fig. 23, 23 a, b.) Potamanthus annulatus, Hag. 1858. Subimago, s.s. g. “ Alis nigro fumosis.” (Hag.) Imago, v. s. s. ¢. Tergum thoracis fuscum. Alea vitring, nervis atris: anticee juxta costas fusco tincte, nervis transversalibus numerosis curvatis simplicibusque in areis marginalibus apices versus. Pedes saturate fusci. Abdomen testaceum, apicibus segmentorum fuscis. Sete: fuliginosee. Long. corp. ¢ 9, al. 10, set. 85 & 87 mm. Hab.—Rainbodde, Ceylon. on the Ephemeride. 83 Leptophlebia femoralis. Potamanthus femoralis, Hag. 1858. Subimago, s.s. “ Alis griseo fumatis.” Imago, s.s. ‘ Capite thoraceque fusco-eneis, pedibus pallidis, femoribus cingulo medio nigro, setis brunneis, abdomine albido, apice fusco, segmentis omnibus apice fusco marginatis ; alis vitreis, venis fuscis.” (Hag.) Long. set. ¢ 33, 9 15; exp.al. ¢ 2? 18 mm. Hab.—Rainbodde. Leptophlebia dislocans. Ephemera dislocans, Walk. 1860. Imago, v.s.s. 9. Ale vitrine, vix lacteo tincte, nervis umbrinis: horum transversales in medio atque apud costam alee anticee fusco marginati, et apicem arew marginalis versus recti, obliqui et fere simplices. Pedes luteo-picei, femoribus annulis in mediis piceis. Abdomen luteo-castaneum, apicibus segmentorum piceis: segmen- tum singulum striga obliqua indiscreta laterali. Sete piceee. Long. al. Q 6, set. 18 mm. Hab.—The Cape of Good Hope. Leptophlebia auriculata, nov. sp. (Genitalia maris, PI? IV. fig. 24, 24a. Ala postica, fig. 2:4b.) Imago, v.s.s. ¢., Picea, thorace atro. Ale vitrine, nervis atro-piceis; nervi transversales in apice arew marginalis simplices; ala postice piceo tincte, spatio subcostali incolorato. Pedum antici picei; posteriores rufo-picei: femora omnia atro-bicincta (vel? bimaculata). Abdomen juncturis saturatioribus, et setis vel atro-piceis, vel corvino-atris. Long. corp. ¢ et al. 9, set. 20 mm. Hab.—Graham’s Town. The form of the hind-wing rather closely resembles that of one of the less oblique species of Avicula or Perna. The name has reference to the excessive dilatation of the marginal area, which reminds one of the “‘ears”’ of such shells. 5) ~ aG 84, Rev. A. E. Eaton’s Menograph Series 2. Sp. typica, L. Colombie. Subimago, ?. Tarsorum antici quinque-articulati, posteriores quadri-articulati: articulorum penultimus cze- teris brevior, duo priores zquales. Als posticee minimez. Seta tres equales. Leptophlebia Colombic. Ephemera Colombie, Walk. 1853; Palingenia Colombie, Hag. 1861. Subimago, v.s.s. 2. Thoracis tergum luteum. Ale semi-opacee, sub-testacew; nervi transversales apicales aree marginalis anticee numerosi, simplices, obliqui, et curvati. Pedum antici saturate caryophyllei, tarsis luteis ; posteriores lutei. Abdomen supra castaneum, infra lutescens; segmenta intermedia singula apicibus stri- gisque lateralibus obliquis atris. Setee fuliginosee, junc- turis et mediis articulorum saturatioribus. Long. corp. 2 10, al. 15, set. 9 mm. Hab.—British Colombia. Perhaps Baetis tessellata, Hag., is to be referred to this species (see Heptagenia tessellata) . Series 3. Sp. typica, D. marginata. Nympha reptans, laminis branchialibus pinnati-partitis peene filiforme-dissectis. (Pict.) Alis erectis, setisque lateralibus a media varis, stans super pedes omnes, subimago quiescit. Imago. Pedibus anticis elevatis et divergentibus mas dormit. @ Tarsi ferme quadri-articulati (rarissime arti- culus quintus tibiz adnatus obscure indicatur): articu- lorum penultimus ceteris brevior, duo priores subzequales ; ungues postici dissimiles. Sets tres equales vel sub- zequales. Pedum forcipis numerus articulorum a duobus ad quatuor pro specie variat, primus tamen semper long- issimus est. Coste alarum posticarum haud excise. Leptophlebia marginata. (Genitalia maris, Pl. IV. fig. 25, 25 a,b. Ale antice pars, Pl. II. fig. 2a.) Ephemera marginata, Lin. 1767. EH. viridescens, Fourc. 1785. HH. procellaria, Schwarz, Nomencl. Résels. Insect. on the Ephemeride. 85 Belust. ZL. stigma & talcosa, Ste. 1835-6; Potamanthus stigma & talcosus, Pict. 1843-5. P. marginatus, Hag. 1863. Subimago, v. v.s. Ala fuliginosz vel corvine, venis flavescentibus, transversalibus anguste nigricante mar- ginatis; postice bases versus vel in toto pallidiores, nervis transversalibus apud margines terminales nigri- cantibus. Imago, v.v.s. 4. Oculi piceo-hepaticolores, vel rufo- fuliginosi. Tergum thoracis fuscum vel aterrimum, politum. Ale vitrine, nervis fuscis: antica apicibus aree marginalis et arez submarginalis fuscis vel sub- fuliginosis. Pedum antici nigro-picei, tarsis cinereis: posteriores picei vel fusco-lutei, tibiis interdum brunneis, tarsisque plus minusve fuliginosis. Abdomen ferme supra fuscum vel fusco-piceum, juncturis flavescentibus, infra fuliginosum, juncturis pallidis, et maculis satura- tioribus sub plexus nervorum: interdum tamen seg- mentorum 2-7 cinerea sunt, lineis spiracularibus satu- ratis, maculisque sub plexus nervorum luteis, atque cetera sunt fusco-picea. Sete atra, vel cinereex, junc- turis vix obscuratis. Forceps fuliginosus vel testaceus. @ vel mari similis ; vel abdomine supra piceo, apici- bus segmentorum saturatioribus, et subtus atr o-fuliginoso, tibiis anticis testaceis. Processus ventralis penultimi segmentorum incisus est. iiongr. corp: 6-12, 9 6-11; al. @«7-11,9. 7-12; set. ¢ im. 12-20, subim. 9; set. 9 im. 8-16 mm. Hab.—Temperate and Arctic Europe and America. In England it appears in April, May, July, September and October, and frequents rivers. Leptophlebia helvipes. (Genitalia maris, Pl. IV. fig. 26, 26 a-c. Ala postica, fig 26d.) Ephemera helvipes, dispar & submarginata, Ste. 1835-6. Potamanthus Geerii, helvipes, dispar, & submarginatus, Pict. 1843-5. Baetis reticulata, ? Burm. 1839. Cloeon euliciformis, Walk. 1853. Subimago, v. v. s. Ale cervine vel nigricantes, nervis transversalibus late nigro-marginatis ; paucitas horum in medio ale anticz maculam transversalem circa coste medium pellucidam facit. 86 Rey. A. E. Haton’s Monograph Imago,v.v.s. Oculisupra saturate purpureo-brunnei, subtus fusci. Tergum thoracis aterrimum, politum. Alze vitrine, crassioribus nervorum furfurosis. Pedum antici atri, tarsis corvinis; posteriores picei, tibiis tarsisque fuliginosis. Abdomen supra fusco-piceum, juncturis in- termediis pallidis; subtus fusco-fuliginosum, maculis obscuris sub plexus nervorum. Forceps furfurosus. Sete testacez, Juncturis saturatis. ? simillima mari, processu ventrali penultimi seg- mentorum acute exciso. Long. corp. ¢ 10-11, ¢ 9-11; al. g 10-11, 2 10-13; set. ¢ im. 12 & 13-14 & 16, subim. 7; set. 9 im. 9-13, subim. 9 & 10-10 & 12 mm. Hab.—Great Britain ; Germany ; and Switzerland (Pict. Mus.). In May, June, July, and August, frequenting streams, rivers and lakes. The name is applicable to dried specimens. Leptophlebia castanea. Potamanthus castaneus, Pict. 1843-5. Subimago, v.s. ‘“ Preecedenti similis, macula tamen cordiformi super mesothoracis apicem, et juncturis tho- racis, pallidis.”’ Imago, ¢ v. s. ‘Oculi latericio-rubentes; aliter feminee similis.” 9. “Tergum thoracis striga pallida longitudinali. Pedes setzeque pallide fusci.” (Pict.) Long. corp., al., et set. 2 circa 8 mm. Hab.—A small stream near the marsh of Villeneuve, at the upper end of the Lake of Geneva, in July. The body of this species is of a maroon-brown colour. (Pict.) Leptophlebia (?) Kruepert. Potamanthus Krueperi, Stein, 1864. Imago, s. s. @. Picea, pleuris pedibus abdo- mineque aurantiacis, alis posticis lete fuscis, setis cauda- libus flavescentibus obscure annulatis. Ale antice apud costas vix flavescentes.” Long. corp. ¢ 10°5, exp. al. 12 mm. Hab.—Greece. In the collection of the Berlin Museum. on the Hphemeride. 87 Leptophlebia Picteti. Potamanthus marginatus, Pict. 1845-5 (nee Lin.). Subimago. ‘* Ale obscure grisew; antica area margi- nali pallide fusca.” Imago, 6. “Oculi obscuri. Tergum thoracis atrum, prothorace fusco. Ale vitrine, nervis longitudinalibus rufescentibus ; anticee areis marginalibus et submargina- hibus fuscis. Pedes rufescentes; tibiz singule basibus lineisque ex eis*productis, et punctis prope apices, atris. Abdomen acute fuscum supra, apicibus segmentorum saturatioribus, preecipue latera versus. Forfex setaeque fuscee.” 2 “mare saturatior.” (Pict). fionecorp.'"¢ 8, 9 7; set. ¢ 10, 2 subim. 9; al. exp. ¢ 18, 9 20 mm. Hab.—Near Geneva, principally in October. Leptophlebia prisca. Potamanthus priscus, Pict. 1854. Exp. al. 13 mm. Species in electro. Leptophlebia cincta. (Genitalia maris, Pl. IV. fig. 27.) Ephemera halterata (?), Fab. 1777. HE. cincta, Retz. 1783. EH. nigra, Fourc. 1785. EH. inanis, Gmel. 1790-3. E. albipennis, Fab. 1793. EH. hyalinata & vitrea, Zet. 1840. Potamanthus cinctus, inanis, halteratus, hyalinus, & Cloe fuscata, Pict. 1843-5. Cloeon fuscata, Walk. 1853. Subimago, v. v.s. Ale atre, nervis obscure flaves- centibus. Thorax piceus vel atro-piceus. Abdomen (¢) cinereum, apicem versus fuscum, apicibus segmentorum obscure canis. Imago, v. v.s. . Oculi supra fuliginosi, infra atri. Tergum thoracis aterrimum, politum. Ale vitrine, crassioribus nervorum vix électro-coloratis. Pedes albi vel cretacei, femoribus anticis saturatioribus, et tibus tarsisque sub-testaceis. Abdomen rarissime in_ toto fuscum; plerumque tamen segmentorum 2-7 vitrea sunt, 88 Rey. A. EH. Haton’s Monograph apicibus interdum lutescenti suffusis, lineis spiracularibus in parte atris, et plexubus nervorum rubiginosis; atque apicalia sunt fusca vel picea, juncturis vel flavescentibus vel rufescentibus. Sete forfexque albicantes; hc vel tri- vel quadri-articulata, et basin versus nigricana. @. Nervicrassi alarum picei. Pedes seteeque testacei, posterioribus tarsorum albicantibus. Abdomen saturate fusco-piceum, juncturis flavescentibus, et processti penul- timi segmentorum late exciso. Long. corp. d 2 7-8; al. ¢ 2 7-9; set. dim.8 &9 -8 & 11, subim.9 & 7; set. 9 im. 7 & 10-8 & 11 mm. Hab.—Northern and Temperate Europe, in streams and rivers. June, July, and August. Leptophlebia vespertina. Ephemera vespertina, Lin. 1758. LH. albipennis, Retz. 1783. Baetis fusca, Burm. 1839. Cloe vespertina, Oul. 1867. Subimago, s.s. ‘ Nigra, alis posticis albis. Est inter minores generis sui, toto corpore et alis anticis nigris; sole ale postice albz, quibus ab omnibus generis sul speciebus manifeste differt. Hab.—Copiose in Smolandii ad fluvium Sathaella.” (Lin. abstract.) Leptophlebia mollis, n. sp. (Forceps maris, Pl. IV. fig. 28.) Cloe mollis, Hag. 1861; not described. Subimago, v.s.s. Alze pallidissime brunnescenti-albe. Abdomen femine fuscum. Imago, v.s.s. ¢. Tergum thoracis vel luteo-piceum, vel saturate fuscum. Pedum antici testacei, tarsis albis ; posteriores pallidissime testacei. Alee vitreze. Segmen- torum abdominis 2-7 alba, juncturis obscuris; cetera luteo-picea. Long. corp. ¢ 6, 9 5; al. 6 7, 2 7:5 mm. Hab.—West Farm, New York. Series 4. Sp. typica, LD. cupida. Imago. Ale postice, et genitalia, eis specierum in serie precedenti similes. Setarum media manifeste on the Hphemeride. 89 brevissima. ‘Tarsorum posteriores quinque -articulati ; articulorum primus obsolescens, tibiz adnatus, secundus tertio subeequalis, quartus ceteris brevior ; itaque sepe quadri-articulati esse videntur. Leptophlebia cupida. (Genitalia maris, Pl. IV. fig. 29, 29a; femine, fig. 29b. Alee anticee pars, Pl. II. fig. 2b.) Ephemera cupida, Say, 1823. Palingenia concinna, pal- lipes, Baetis debilis & (?) EH. hebes, Walk. 1853. Pota- manthus cupidus, concinnus, & Baetis ignava, Hag. 1861. Subimago, v. s. s. Ale pallide nigricantes; ‘ pos- teriores apices versus vix saturatiores.” (Say.) Imago, v. s. s. ¢. ‘*Oculi supra fuscescentes, infra atri” (Say, e v. s.). Tergum thoracis piceum vel fuscum. Alze vitrine, nervis et apice aree marginalis antice pal- lide fusco-piceis. Pedum antici fuscescentes vel vix rufescentes, tarsis atris; posteriores testacei, tarsis ni- gricantibus. Abdomen piceum, “supra juncturis, linea longitudinali in medio strigisque brevibus duabus apud basin segmenti singuli, pallidis” (Say, e v. s.). Sete fuscee, juncturis obscuris. ? . Alee vitrine, vix lurido tinct. Processus ventralis penultimi segmentorum emarginatus. Long. corp. $ 8, 9 10; al. ¢ 8, 2 11; set. ¢ subim. 14, 9 15 mm. Hab.—Nova Scotia (Walk.); the Ohio River near Cin- cinnati (Say); Washington (Hag.), &c. Leptophlebia nebulosa. (Genitalia maris, Pl. V. fig. 1, 1a.) Palingenia nebulosa, Walk. 1853; Potamanthus nebu- losus, Hag. 1861. Pot. odonatus, Walsh, 1862. Imago ¢, v. s. s. Thoracis tergum piceum. Ale vitrinz, nervis piceis; antice singule nebulis magnis rotundatis apices versus subfuscescentibus. Pedum an- tici fusci, posteriores testacei. Abdomen supra piceum, subtus subtestaceum. Sete testacez, juncturis piceis. Long. corp. ¢ 10, al. 10-11, set. 30 & 6 mm. Hab.—S. Martin’s Falls, River Albany, Hudson’s Bay (Walk.); Illinois (Walsh). 90 Rey. A. E. Eaton’s Monograph Series 5. Sp. typica, L. fusca. Nympha reptans. Segmentorum abdominis 1-7 brau- chifera; laminz branchiales simplices, pinnati-partite quidem, sed peene filiforme-dissectee. Palpi maxillares tri-articulati ; superioris primus articulorum largus ceter- isque conjunctim longior, secundus tertio subzequalis ; inferioris ultimus articulorum penultimo longior. Imago. Posteriorum alarum margo costalis valde ex- cisus. Tarsorum posteriores quinque-articulati ; articulo- rum primus obsolescens, tibiz adnatus, brevis, secundus longior, tertius et quartus secundo sensim breviores ; ungues dissimiles. Artus forcipis primus articulorum aliis longitudine subzequalis. Leptophlebia fusca. (Ala antica, Pl. II. fig. 2c. Genitalia maris, Pl. V. fig. 2,2a. Ala postica, fig. 2b.) Ephemera fusca, Curt. 1834. H. minor & Baetis cin- gulata, Ste. 1835-6. Potamanthus brunneus, fuscus, minor & Cloe cingulata, Pict. 1843-5. Cloeon cingulata, Walk. 1853. Subimago, v. v.s. Als cinerex, nervis piceis. Tho- rax piceus: tibiarum antic subfuliginose, posteriores cervine. Imago, v.v.s. 6. Oculi saturate fuliginosi. Tergum thoracis aterrimum politum. Alze vitrine, nervis fuscis. Pedes brunneo-olivacei, femoribus et tibis anticis piceis. Abdomen fusco-piceum, juncturis flavescentibus, setis et forcipe fuscis (in s. 8. saturate fulvis). @ mari similis, tarsis anticis pallidis. Setze fuliginose, juncturis vix saturatioribus. Processus ventralis penul- timi segmentorum late excisus. Long. corp. ¢ 5-7, 26-7; al. d 9 6-7; set. 6 8 & 12 -11 & 12, @ 8-9, subim. 6 mm. Hab.—Great Britain; Interlaken; Mt. Saleve (Pict.). In brooks and rivers. The end of May to August. A pair of branchial plates is omitted from Professor Pictet’s figure of the nymph, which i is, in other respects, a good representation of it. on the Hphemeride. 91 Leptophlebia modesta. (Genitalia maris, Pl. V. fig. 3, 3a, b.) Potamanthus modestus, Hag. 1864. Subimago, v.s.s. Alarum anticze murine, postice cervine. Imago, v.s.s. ¢. Thoracis tergum piceum vel ater- rimum. Ale vitrine, venis testaceis vel fuscis ; postice vix lacteo tinctee. Pedum antici picei ; posteriores satu- rate fusci. Abdomen fusco-piceum. Sete virescenti- grisez vel fuliginose, juncturis atris. . Processus. ventralis penultimi segmentorum bifidus.” (Hag.) Long. corp. ¢ 6-7; al. $ 2? 8-9; set. g circa 10 mm. Hab.—Carinthia (Zeller MS.) ; Corsica (Hag.). Dr. Hagen’s diagnosis of the subimago seems to suit IL. modesta ; but the specimen associated with the types of the imago in M. de Selys Longchamps’ collection is Baetis Rhodani, 2? subim. Genus [— —| : Imago diptera, cauda triseti ; Leptophlebiw approxime affinis. [————] inanis. Potamanthus inanis ||, Pict. 1848-5. Imago, s. s. “Caput nigrum; thorax acute fuscus. Alze vitreze, nervis tenuibus, fuscis; vix griseo tincte, sed apud costas obscuriores, et ad bases flavescentes. Pedes fusci. Abdomen albidum, apice fusco ; segmenta pallida, singula maculi magni fusca utrmque. Set grisez, nigro-punctate.” Pict.) Hab.—Brazil. (Pict.) In the Vienna Museum. Professor Pictet thought that the forceps had little lamellar limbs: but he was not sure that the shape of these might not have become changed after death. 92 Rey. A. EH. Eaton’s Monograph Genus T'rRIcoRYTHUS. (Ala mesothoracica, Pl. II. fig. 3.) Ephemera, Sav.1817. Ceenis, Pict. 1843-5. Tricorythus, Etn. 1868. Imago. Ale duz; sete tres equales; oculi maris integri. A nervis alarum facillime e Ceni distinguitur. Tricorythus varicauda. Cenis varicauda, Pict. 1843-5. Imago, s.s. Pallide luteus, vel ochraceus; oculis maculaque in vertice atris: suturis (?) mesothoracis dorsi quoque atris; alis vix flavescentibus, costis subcostisque paulo saturatioribus; et pedibus luteis vel ochraceis griseo variis. Segmentorum abdominis quinque apicalia punctis singulis ventralibus nigris. Set albz, anguste nigro annulate.” (Pict.) Long. corp. ¢ 4, set. 9; exp. al. 10 mm. Hab.—Upper Egypt. Genus CNIS. Cenis, Ste. 1835-6. Brachycercus, Curt. 1834. Ma- crocercus, Westw. 1836. Oxycypha, Burm. 1839. Ceneus, Agassiz, Nomenclat. * (Ala antica, Pl. IT. fig. 4.) Nympha fodiens. Segmentorum abdominis 1, 3, 4, 5, 6, 7 branchifera: laminarum antice minute, erecte ; secundee magne, crassz, ceeteras tegentes ; relique tenuis- sim, semiovate, bene fimbriatz, imbricate, graduatim minores a fronte retrorsum; omnes simplices. Pedes femoribus vel compressis vel gracilibus secundum speciem. Caput vel inerme, vel cornibus tribus fronta- libus armatum. Palpi maxillares tri-articulati: supe- rioris proximus articulorum largus, tertio longitudine * Brachycercus being a sexual name gives place to Cenis. Cenia, Newman, 1838, is a genus of Diptera. Conis was changed by Poseidon into an invulnerable man named Ceneus, one of the Lapithe. He being buried alive by the Centaurs in the course of the famous battle, was thereupon transformed into a bird. She somehow seems to have regained her original form; for Virgil narrates the meeting of Mneas with Cenis in Hades, in Ain. vi. 448. ER Sec on the Ephemeride. 93 eequalis; secundus brevior: inferioris primus articulo- rum multo largissimus, ceteris conjunctim longitudine subzequalis ; tertius conicus, secundo semi-zequalis. Pedibus anticis depressis, alis duabus late expansis (fere nunquam erectis), et setis tribus subqualibus pubescentibus parallelis, subimago quiescit. Imago. Caput et prothorax transversi; oculi remoti, integri. Ale duz magne, in longitudinem marginium terminalium ciliate. Tarsi quinque-articulati (intermedi interdum tamen quadri-articulati): posticus proximo ar- ticulorum brevissimo, tibizque adnato, secundo tertio et quarto brevibus subzqualibus, quinto ceteris lon- giore: anticorum ungues breves, obtusi, conformes ; posteriorum ungues dissimiles. Sete tres subsequales, internodis (in ¢) longis. Forcipis pedes inarticulati. Ovivalvuli femina caret. Latera sezmentorum abdominis plus minusve retro producta. These insects live a very short time in their adult state. They fly in dense crowds over gentle streams, rivers and lakes, early in the morning and late in the day, at the beginning and end of summer. Dr. Hagen says that, in Prussia, the English species sometimes appear “in such quantities that objects near the water are covered an inch thick, and in the Curische Nehrung they are used to feed the pigs.” With us, they are less abundant. re Cenis macrura. (Genitalia maris, Pl. V. fig. 4.) Ephemera brevicauda, Fab. (§ sub. ?) 1798. C. ma- erura & interrupta, Ste. 1835-6. [H. pusilla, Zet. MS., 1840.] OC. grisea, Pict. 1843-5. Subimago, v. v.s. Ale griseo vel nigricanti tincte, preecipue costas versus. Set nigricantes. Imago, v. v.s. Caput nigrum, articulis antennarum proximis duobus, et junctura capiti-thoracici, cervinis. Prothorax corvinus: meso- et meta-thoraces aterrimi nitentes. Pedes ¢ femoribus atris, tibiis tarsisque pal- lide nigricantibus: ¢ femoribus anticis griseis, posticis cretaceis. Abdomen 6 griseum, latera versus corvi- num; segmentorum intermedia singula supra lineis in mediis longitudinalibus, punctis duobus apud bases duo- 94 Rey. A. EH. Eaton’s Monograph busque subtus circa media, pellucidis: ? abdomine nigricante, latera juncturasque versus ochraceo, et subtus virescenti-griseo tincto. E lateribus segmentorum api- calium setulz tenues pallide breves producuntur. Setz obscure, juncturis nigricantibus. Long. corp. ¢ 4-5, 2 6; al. ¢ 4-5, 2 7; set. ¢ im. 14 & 15-15 & 16, subim. 3; set. 9 im. 3°5 & 2, subim. 3mm. Hab.—England; Switzerland ; Voslau (Brauer); Lap- land (Zet.). May to September. Spiders’ webs and painted surfaces have provided me with dried specimens in widely distant localities. They fly at Reading from about 4°45 until 8 or 9 a.m., and again in the cool of the afternoon and evening, in June. I have seen subimagines with the dew thick upon their wings, resting on a flood-gate of the canal at 5.30 a.m. in June; and when the sunlight reached them, they immediately began to moult. Cenis (?) chironomiformis. (?) Brachycercus chironomiformis, Curt. 1834; (?) Canis chironomiformis, Ste. 1835-6. Oxyeypha lactea, Burm. 1839; Coenis lactea, Pict. 1843-5. (?) C. halterata, Hag. 1863. (Margine membrane subgenitalis ¢ anguste furfuroso, haud nigro veluti in precedente.) Imago, v. s.s. Caput et thorax brunneo-lutescentes, nervis alarum obscuris. Pedes albicantes, femoribus anticis brunneis. Abdomen supra griseum, apicibus segmentorum et linea longitudinali media albicantibus, “‘strigisque indistinctis e spiraculis atris ; venter flaves- cens” (Hag.). Sete sub-fuscescentes; forceps et margo membrane subgenitalis anguste furfurosi absque macula basali obscura. ong. “corp. 9 45°exp. ali” 9°73 set. 2) Uimam \ (Pict:). Hab.—England (Curt.) ; Prussia (Burm., Hag.); Lake of Geneva (Pict.). In May. The only specimens I have seen of this insect are in M. Pictet’s collection: one (or more) of them is in spirits. The penis of this specimen was very similar in form to that of a dried specimen of C. macrura. Sr on the Hphemeride. 95 Cenis dimidiata. (Genitalia maris, Pl. V. fig. 5. Ala antica, Pl. IT. fig. 4.) Ephemera minima, (?) Lin. 1747. E. horaria, (?) Lin. 1758. Brachycercus minima, (?) Curt. 1834. Ccenis dimi- diata, brevicauda & pennata, Ste. 1835-6. Cloe horaria, (?) Ramb. 1842. 2H. albipennis, Atk. 1843. Cloeon horaria, (?) Walk. 1853. Subimago, v. v.s. Alz cane, areis et marginali et submarginali fuliginosis pene usque ad apices. Setz albze, pubescentes. Imago, v. v. s. Caput et prothorax fusci, obscuri, antennis albis, oculis atris. Meso- et meta-thoraces picei. Pedum antici sub-fuliginosi, femoribus griseis ; posteri- ores cani, puncto atro ante femoris apicem. Abdomen vel in toto album vel cretaceum ; szpissime tribus seg- mentorum apicalium tantum cretaceis, et ceteris griseis, juncturis lineaque longitudinali media cretaceis. Ventris segmenta sexpe griseo bi-punctata sunt. Genitalia et setze albee. Long. corp. go 3-5, ? 4; al. ¢ 4, 2? 3; set. dGI8SS& 13, subim. 3 & 2°5-3 & 3°53; sat. 9 38, subim. 2°25 mm. Hab.—England; Visp in the Valais; Belgium (De Selys Mus.); Prussia (Hag.); Moscow (Oul.). From June to August. Cenis diminuta. C. diminuta, Walk. 1853. CO. amica, (?) Hag. 1861. (Genitalia maris eis preecedentis parum similia.) Imago, v. s.s. Thorax luteus: alis vitreis, costas ver- sus nigricantibus; pedibus albis, femoribus anticis cin- erascentibus. Segmentorum abdominis anteriora sub- virescenti-grisea, posteriora cretacea ; segmentis singulis ad latera lineis obscuris longitudimalibus. Genitalia et setz albe. Long. corp. g 2°5, al. 3, set. 10°5 mm. Hab.—S. John’s Bluff, East Florida (E. Doubleday) ; Pennsylvania (Hag.). The posterior femora of C. amica, Hag., have each a superior subapical black spot; but I suspect it will be found to be identical with C. diminuta, Walk. 96 Rey. A. H. Haton’s Monograph Cenis hilaris. Ephemera hilaris, Say, 1839; C. hilaris, Walk. 1853. Imago,v.s.?. “Thorax pallide fulvus, alis costas versus obscuris. Abdomen album, segmentis apicalibus singulis utrinque punctis tribus fuscis.” (Say, abstract.) Long. corp. 2 mm. Hab.—Indiana. September. (Say.) Ceenis perpusilla. C. perpusilla, Walk. 1853. Imago, v.s.s. &. “ Testacea; ale antice sub-cine- rez: pedes setzeque albi.”’ Long. corp. 2°5, set. 12, exp. al. 6 mm. Hab.—Ceylon. (Walk.) Cenis discolor. Oxycypha discolor, Burm. 1839; Canis discolor, Pict. 1843-5 ; Cloeon discolor, Walk. 1853. Subimago,? s.s. ‘‘Supra cinerea, subtus pallida; alis infuscatis, costa obscuratiori ; his filamentisque analibus longius pilosis.” Long. corp. 2 2°5 lin. Hab.—Cape of Good Hope. (Burm.) Cenis argentata. C. argentata, Pict. 1845-5. (Confer cum C. macrura et C. dimidiata.) Subimago, s. s. ‘ Caput et thorax grisei, fulgore argenteo; prothorax vix clarior. Ale grisez, costis subcostisque nigris. Pedum antici grisei; posteriores albi. Abdomen basin versus griseum, apice albo. Setz albee, vix nigro annulatis.” (Pict.) Long. corp. ? 4, exp. al. 8, set. 3 mm. Hab.—Sicily. (Pict.) lm ay, a on the Ephemeride. 97 Ceenis oophora. O. oophora, Pict. 1843-5. Fusca; alis albicantibus, pedibus flavescentibus. (Pict.) Long. corp. ? im. 4, exp. al. 11 mm. Hab.—Sardinia. (Kollar.) It is just possible that this species may be rediscovered, and determined by comparison with Pictet’s figure ; but the chances are small, Cenis luctuosa. (Forceps maris, Pl. V. fig. 6.) (?) Brachycercus Harrisella, Curt. 1834; (?) C. Harri- sella, Ste. 1835-6. Oxycypha luctuosa, Burm. 1839. Hphe- mera brevicauda, Blanch. 1840. Cents luctuosa, Pict. 1843-5. O. halterata (nympha), Etn. 1868. Subimago, v.v. s. Caput et prothorax corvini; meso- et meta-thoraces atri. Ale nigricantes, nervis obscuris. Pedes albi, interdum vix fumati; antici tibiis tarsis et femorum apicibus anthracinis. Abdomen pallide fulvum, setis atris. Imago, v.v.s. ¢ & 9. Caput et thorax picei, sutu- ris et lateribus fuliginosis; tarsis anticis fuliginosis, et pedibus posticis nigricantibus juncturis atris. Abdomen rufo-fuliginosum, linea obscura brevi ad latera utrinque in singulis juncturis: forcipe setisque griseis vel nigri- cantibus. Long..corp. ¢ 6°5, 2 5-7; al. dg 6, 2 5°5; set. J im. 25, subim. 4; set. ? subim. 3 & 4mm. Hab.—Somersetshire and Berkshire ; Berlin (Burm.) ; Lake of Thun (Pict.). The name of this species probably has reference to the pale oblong spots near the bases of the long bristle-like processes from the lateral edges of segments 7, 8 & 9. These bristles are found in all the English species, and are longer in the imago than in any other stage of de- velopment. TRANS. ENT. soc. 1871.—parT 1. (MARCH.) H 98 Rev. A. E. Eaton’s Monograph Genus HpHEMERELLA. (Ala antica, Pl. IT. fig. 5.) Ephemera, p., Pod. 1761; Potamanthus, p., Pict. 1843-5 ; Potamanthus, restrict., Hag. 1849 ; Hphemerella, Walsh, 1862.* Nympha reptans, laminis branchialibus complexis qua- tuor. Seementorum branchiifera sunt 4, 5, 6 et septimum. Palpi maxillares tri-articulati: superiores brevissim1, ulti- mis articulorum penultimis longioribus ; inferiores duo- bus prioribus articulorum subeequalibus, ultimis brevis- simis. Hi Leptophlebice subimaginis habitus similis est. Imago. Ale quatuor; sete tres, subeequales; oculi maris sub-partiti. Tarsi quinque-articulati; articuloram proximus obsolescens, tibiee adnatus, secundus tertio sub- eequalis, quartus brevior: ungues dissimiles. Pes forcipis tri-articulatus, secundo articulorum longissimo. Lamina ? ventralis e penultimo segmentorum ; sed ovivalvula caret. Ephemerella ignita. (Genitalia maris, Pl. V. fig. 7. Ala postica, fig. 7a.) Ephemera ignita, Pod. 1761. LF. erythropthalma, Schr. 1798. H. fusca, diluta, apicalis, rufescens, rosea & Baetis obscura, Ste. 1835-6; Potamanthus erythropthalmus, api- calis, dilectus, roseus & erythrocephalus, Pict. 1843-5. Subimago, v.v.s. Alarum antice saturate cinerex, posticee albo-cervinee. Imago, v. v. s. @. Oculi supra brunneo-carnei, vel carnei ; partes inferiores olivacee vel flavo-olivaceze. Tho- racis tergum fuscum, Ale vitrine, crassioribus nervo- rum longitudinalium cum punctis nodalibus vix piceis, vel electro-coloratis. Pedes peene sulphurei: antici tibus lutescentibus, et tarsis obscure testaceis; posteriores tarsis testaceis. Abdomen supra saturate fuscum, lateri- bus juncturisque ochraceis; subtus hepaticoloratum, in- terdum fuliginoso tinctum, lineis brevibus divergentibus * Ephemerella, Schimp (1850, or 1860), is a genus of the Phascei, an order of the Acrocarpous section of the Mosses. on the Hphemeride. 99 duabus punctisque sequentibus duobus apud basin singuli segmenti obscure indicatis. Sete fuliginose, juncturis saturatioribus ; forceps testaceus. ?. Oculi flavo-olivacei. Tibiz antice testaces. Puncta nodalia alarum eis maris distinctiora. Processus ventralis penultimi segmentorum retusus. Long. corp. ¢ 8-9; al. 6 9, ? 10-11; set. ¢ 10 &11- 12 & 11, subim.8&7; set. 9 8&9,subim.7 & 9 mm. Hab.—Great Britain, Germany, Switzerland; also Madrid (H. Pict. Mus.). Frequents streams and rivers. June to September. Ephemerella gibba. Potamanthus gibbus, Pict. 1843-5. Subimago. ‘ Ale saturate grisez, apud bases lutes- centes.” Imago, v.s. 6. “Oculi acute rubri. Corpus fusco- rubiginosum ; alis vitreis ; pedibus fulvis, anticis femori- bus tarsisque fuscescentibus ; setis fulvis, juncturis atris.” 2. “ Pallidior mare; capite thoraceque fulvis, illo atro-punctato, punctis super verticem confluentibus, hoe punctis parvis duobus fuscis in medio prothoracis tergi, et pluribus commissurarum dorsalium mesothoracis fuscis. Abdomen rufescens, supra punctis obscuris duo- bus in medio segmenti singuli.” —(Pict.) Long. corp. ¢ 6-7, ? 7; set. ¢ 9, subim. 7; set. ? 8, subim. 7; exp. al. ¢ 15-16, ? 21 mm. Hab.—A streamlet near Villeneuve, at the head of the Lake of Geneva ; in July (Pict.). Ephemerella cenea. Potamanthus ceneus, Pict. 1848-5. Subimago. ‘“ Alze grisez ; antica basi subcoste fulva.” Imago, 2. ‘Caput et oculi fulvi, macula supra fusca. Prothorax maculi utrinque fusci; mesothorax eneus, politus. Al vitrez, iridicolorate ; nervorum longitudinales fulvi, transversales grisei. Pedes fulvi, juncturis tarsisque nigricantibus. Abdomen olivaceo- fuscum ; sete testacez, juncturis atris.” (Pict.) H 2 100 Rey. A. E. Haton’s Monograph Long. corp. ? 6, set. 8; exp. al. 18 mm. Hab.—Mt. Saleve. (Pict.) Professor Pictet’s figure of the nymph of H. cenea closely resembles a dark variety of the nymph of HL. ignite. Ephemerella invaria. (Genitalia maris, Pl. V. fig. 8, 8a.) Baetis invaria & fuscata, Walk. 1853. Hphemerella excrucians, Walsh, 1862. Subimago, v.s.s. Alee seteeque pallide nigricantes. Imago, v.s.s.- ¢. ‘ Oculi supra flavi, infra fusci”’ (Walsh, ev. s.). Tergum thoracis saturate luteum, vel fascum. Ale vitrez, vix flavee apud costas; crassioribus nervorum lutescentibus vel fuscis. Pedum antici picei ; posteriores testacei, tarsis subtestaceis, apicibus junctur- isque fuscis vel rubiginoso-luteis. Abdomen supra piceum vel fuscum, vel rubiginosum, apicibus segmentorum satu- ratioribus ; subtus testaceum. ‘‘ Sete albicantes, juncturis fuscis.”” (Walsh.) ? mari simillima. Long. ¢ 5°5-7°5, 2? 5°5-6°5; set. ¢ 11-13, 9 10-1275; exp. al. ¢ 145-20, ? 15-19 mm. ~ Hab.—Nova Scotia (Walker) ; Iinois (Walsh). HLphemerella consimilis. EH. consimilis, Walsh, 1862. Imago, g. ‘“ Pedes immaculati ; antici apicibus tibia- rum et proximis articulorum tarsalium fuscis.” (Walsh.) Mr. Walsh describes the prescutum of the mesothorax as being “half as long again as wide,’ and the meso- thorax itself as “being 4-5 times as long as wide:” whereas, in the preceding species, the one ‘is scarcely longer than wide,” the other is ‘“‘scarcely three times longer than broad.” Long. corp. ¢ 5, set. circa 5; exp. al. 14 mm. Hab.—Rock Island, Illinois (Walsh). on the Hphemeride. 101 Genus Bzrisca. (Ala antica, Pl. IT. fig. 6.) Baetis, p., Say, 1839; Beetisea, Walsh, 1862. Nympha reptans: “adulta laminis branchialibus ex- ternis caret ; primum tamen segmentorum laminam dupli- cem obtectam utrinque habet. A thorace segmentorum abdominis quinque priorum dorsa obteguntur, elementis tergi thoracis confluentibus et retrorsum productis ; itaque ne quidem ale, neduin thoracis commissure, videri possint ” (Walsh). Caput a fronte bicorne; labium integrum; maxillarum inferioris palpus bi-articulatus, ultimo articulorum singulariter bifido, et peene chel- formi. Imago. Al quatuor; setarum media abortiva; oculi maris “integri. Tarsi quinque-articulati ; articulorum primus longus, tibiz adnatus, secundus primo brevior sed tertio squalis, quartus paulo brevior; ungues dissimiles. Pes forcipis tri-articulatus ; aiten aru primus longus, secundus longissimus, et tertius brevissi- mus. Femina ovivalyuli caret; processus ventralis penultimo segmentorum excurrit. Beetisca obesa. (Genitalia maris, Pl. V. fig. 9.) Baetis obesa, Say, 1839; Beetisca obesa, Walsh, 1862. Subimago, v. s. s. Ale corvine, lineolis brevibus transversalibus numerosis pellucidis; antica semifascis transversalibus pellucidis duabus, una e costa prope api- cem, alteraque basispropriore. (Say & Walsh.) Imago, v. s.s. o&. Rufo-fusca. Ale vitrez, nervis tenuissimis ; “‘anticarum costv subcostzeque lutescentes.” Pedes testacei ; antici gamboso tincti, juncturis et ulti- mo articulorum tarsalium obscuris ; posteriores ultimis articulorum quoque obscuris. Prosternum prominens, bidentatum. Abdomen subtus, preecipue apicem versus, rubido-albo tinctum: segmentorum penultimum linea longitudinali in medio ventris fusca. Sete pubescentes, albze, juncturis obscuris. 102 Rev. A. E. Eaton’s Monograph @ simillima mari, processu ventrali segmentorum penultimi breviter inciso. Long. corp. ¢ 7-8, ¢ 6-8; set. d 9 im. 6-7, 9 subim. 4-5; exp. al. ¢ 20-22, 9 22-25 mm. - Hab.—Illinois (Walsh) , Indiana (Say); and California. Genus CLOEON. (Ala mesothoracica, Pl. IT. fig. 7.) Ephemera, p., Lin. 1761; Cloeon, Leach, 1815 ; Cloe, p., Burm. 1839; Cenis, p., Walk. 1853; Chloeon, Lub- bock, 1863 ; Clocopsis, Htn. 1866. Nympha natans, laminis branchialibus utrinque sep- tem: laminarum septima simplex, cetere bilamellares, omnes marginibus integris. Palpi biarticulati, articulis longitudine equalibus; inferiores depressi, apicibus obliquis; superiores tenuissim1, filiformes. Alis erectis setisque divergentibus subimago quiescit stans in pedes omnes. Imago. Ale seteeque due. Oculi maris_ bipartiti, parte superiori sub-turbinata. Tarsorum _posteriores quadri-articulati ; articulorum primus multo longissimus, tibiz adnatus, secundus brevis, tertius brevissimus ; ungues dissimiles. Pes forcipis tri-articulatus, secundo articulorum longissimo: penis occultus. Ovivalvula femina caret. Cloeon dipterum. (Forceps, Pl. V. fig. 10.) Ephemera diptera, Lin. 1761. LE. striata & annulata, Miill. 1776. Cloeon pallida, Leach, MS., 1815. H. margi- nata, Gor. & Pritch. 1829. C. marmoratum & obscurum, Curt. 1834. C. cognatum, dimidiatum, virgo & consobri- num, Ste. 1835-6. Oloe diptera, Burm. 1839. Cloe affinis, Ramb. 1842. Cloe virgo & cognata, Pict. 1843-5. H. culiciformis, Fonscol. 1846. C. diptera & cognata, Walk. 1853. Chloeon dipterum, Lubbock, 1863-5; Cloeop- sis diptera, p., Ktn. 1866. Subimago, v.s.s. Alze pallide cervino tinctee. Imago, v. v. s. ¢&. Oculi turbinati sub-carnei, vel rufo-hepaticolorati; inferi atro-picei. Tergum tho- on the Ephemeride. 103 racis aterrimum, politum. Ale vitrine, nervis quasi atris ; horum tres priores incolorati: nervule apicales aree marginalis rect, pauce (3-5), atque vix oblique. Pedum antici femoribus vel albidis apicibus cretaceis, vel virescenti-cinerascentibus, singulis maculis pree-apica- hbus rufescentibus, et tibiis tarsisque vel cinereis vel carbonariis: posteriores albicantes vel cretacei, macula femoribus spe indiscreta, atque juncturis et articulis terminalibus tarsorum (proxima juncturarum excepta) atris. Abdomen supra atro-piceum, juncturis ochraceis ; infra saturate cinereum, maculis rubiginosis duabus in juncturis albidis singulis. Set albe, juncturis in vices late atris. Forceps cinerascens, proximis articulorum fuscis. Var. ¢. v. s. s. Parvum. Segmentorum abdominis 2-7 grisea, apicibus strigaque trigonali ex els utrinque producta rubiginosis: tria apicalia. picea. Hab.— Belgium. ?. Corpus luteum. Oculi olivacei, obscure bicincti. Capitis vertex rufescente bi-strigatus. Ale vitrine, areis et marginalibus et submarginalibus tribusque priori- bus nervorum longitudinalium electro-coloratis, nervis transversalibus inclausis albis; ceterl nervorum atri: horum plures transversalium incrassati. Pedum antici gambosi, tibiis tarsisque testaceis juncturis obscuris: posteriores femoribus fere electro-coloratis, cmgulis et preapicali et apicali rufescentibus, tibus tarsisque testa- ceis, unguibus et 2-4juncturarum obscuris. Setz rubido- albze, juncturis in vices late atris. lone; corp: ¢.o-10;. 9 11; al: ¢ 6-11, 9 105 set. 6 13-20, subim. 14; set. 9 12-15, subim. 12 mm. Hab.—Kurope, and the Madeiras. In tranquil waters: May to July. I have seen female specimens of two species of Cloeon very closely related to O. dipterum ; one inhabits N. W. India, the other Knysna, 8S. Africa. Oloeon simile. (Forceps, Pl. V. fig. 11.) CO. simile, Etn. 1870. Subimago, v. v. s. Als murine, apud costas et bases vix subflavescentes, nervis furfurosis. Setee fusco-atree. Oculi turbinati maris subolivacei. 104 Rev. A. E. Eaton’s Monograph Imago, v. v.s. &. Oculi turbinati olivacei, vel satu- rate virescenti-sulphurei; inferiores atro-picei, vel atro-- virentes. Thoracis tergum vel aterrimum, vel fuscum, politum. Ale vitrine ; subcosta tertiusque nervorum longitudinalium substraminei; nervule apicales arez marginalis multe, sparsim conjuncte. Pedes olivacei; posteriores tarsis saturatioribus; antici tibiis viridi- griseis vel atro-virentibus, et tarsis griseis vel atris. Abdominis dorsum piceo-fuscum; venter cinereus, apice vix fulvescenti. Forceps virescenti-albus. Setee rubido- albze, juncturis rubescentibus. ? mari simillima. Oculi atri. Caput circa ocellos castaneum, lineis vel strigis duabus concoloribus super verticem: carina facialis tuberculos duos parvos piceos utrinque habet. Abdomen supra luteo-fuscum, juncturis luridis, et tracheis subcutaneis obscuris ; subtus oliva- ceum, ultimo segmentorum penultimoque stramineis. Pedes viridi-olivacei, tibiis tarsisque saturatioribus. Long. corp. 6 9, 2 103 al. d 8, ¢ 10-11; set. 1g 14-15, subim. 9; set. 2 10-14, subim. 7-9 mm. Hab.—Near Retford, in Nottinghamshire, and at Quy Fen, near Cambridge. September and October ; in still water. The name simile has reference to the similarity between the sexes. Cloeon subinfuscatum. Otoe subinfuscata, Ramb, 1842. Subimago, v.s.s. 9. Ale saturate corvine, nervis longitudinalibus luteis: nervule apicales are marginalis multe (circa 12) sparsimque divise. Thorax lutescens, pedibus luteo-luridis. Setee juncturis obscuris. Long. corp. ? 9, al. 11 mm. Hab.—Provence. (Rambur.) Cloeon obscurum. Cloe obscura, Ramb. 1842: nee Curt. Subimago, 9, v. s.s. Ala murine, nervis luteis: ner- vule apicales are marginalis simplices (circa 8 in nu- mero), et irregulariter flexuose. Thorax rufo-testaceus: pedes testacei. on the Ephemeride. 105 Long. al. 9, corp. 6 mm. Hab.—France ; probably near Paris. The name will not obtain, Curtis having previously applied “ C. obscurum” to C. dipterum, subim. Oloeon russulum. (Forceps, Pl..V. fig. 12.) Ephemera russula, Mul. 1776. Cloeon dimidiatum, Curt. 1834. H.culiciformis & striata (?), Blanch. 1840. Cloe pumila, Ramb. 1842. Cloe dimidiata, Pict. 1843-5; Cloeon dimidiata & Coeenis sinensis, Walk. 1853; Chloeon dimidiatum, Lubbock, 1863 & -5. Cloeopsis diptera, var., Htn. 1866 & -7. Subimago, v. v.s. Ales cane; apud crassiores ner- vorum spe gramineo tinctz. Sete cinerascentes. Imago, v. v. s. Variabilissima colore: ¢ maribus Cloeonis similis, Baetis binoculati atque varietatum hujus, ? uxoribus Centroptili luteoli et Baetis binoculati colore similis. Var. 1. ¢. Cloeoni simili similis. Oculi turbinati fuhiginosi. Tergum thoracis aterrimum politum. Pedes pallide virescenti-flavescentes, tarsis nigricantibus. Ab- domen saturate fuscum, juncturis flavescentibus, tracheis- que subcutaneis atris. Sete albs, juncturis rufescenti- bus. Forceps albus, apices versus nigricans. Hab.—Reading (Berkshire), and near Cambridge; as well as in the Valais Canton, near Visp. Var. 2. &. Baeti binoculato similis. Oculi turbinati sulphurei vel flavi; inferiores fuliginosi, vel virescenti- cinerel, vel etiam glauci. Tergum thoracis fuscum, vel fusco-luteum, vel saturate furfurosum vel testaceo-furfu- rosum. Alze vitrine ; nervule apicales areee marginalis (6-8) oblique, interdum sparse furcatze prope subcostam. Pedum antici virescenti-grisei, tibiis tarsisque griseis vel canis; posteriores cretacei vel sulphurei, tibiis tarsisque obscure albis. Segmentorum abdominis 3-6 vel 7 alba, vix aut ne vix quidem lurido suffusa; cetera supra fur- furosa vel fusca, juncturis ochraceis, et subtus plus aut minus ochracea. Sete albz, juncturis interdum anguste obscuris. 106 Rey. A. E. Haton’s Monograph Hab.—Temperate Europe, and North China. This is the normal form. Var. 38. femine similis, oculis thoraceque eis 3 var. 2 similibus. ?. Oculi cesii, vel atro-fuliginosi. Capitis vertex strigis longitudinalibus rufescentibus duabus. Thoracis tergum furfurosum, vel pallidissime sub-flavum, inter- dum aterrimum, politum : mesothoracis apex nonnunquam gramineus. Ale vitrine, bases versus sepe gramineo tinctee. Femora gramineo-alba, tibiz tarsique albi, ultimis articulorum cinereis. Abdomen supra vel pallide sub-olivaceum, vel furfuroso-album: segmentorum 2-7 singula macula parva in medio dorsi, duabus apud junc- turam apicalem, et linea curvata indiscreta utrinque, furfurosis; striga juxta spiracula cum tracheis subcu- taneis atris. Interdum abdomen est fuscum. Sete albe. Hab.—Temperate Europe. Long. corp. ¢ 5-9, 2 7-8; al. 3 2 7-8; set. o 13-15, subim. 9; ? 10-12, subim. 6-8 mm. Hab.—Temperate Europe and Northern China. Oloeon mendax. Cloe (C) mendax, Walsh, 1862. Subimago. “ Alee sub-opace, vix nigricanti tincte.” Imago, ¢. ‘ Pallide rubiginosum, alis vitreis. Pedes pallidi, apicibus tarsorum obscuris. Abdomen subtus pallide virescens, pellucidum, apicem versus opacum.” ?. “Supra pallidior; interdum thorace sub-vires- centi.” (Walsh.) Long. corp. ¢ 4, 2 45; set. 9 9, ¢ subim. 8; exp.al. ¢ 2? 14 mm. Hab.—Rock Island, Iinois. (Walsh.) Cloeon dubium. Cloe (C) dubia, Walsh, 1862. Subimago. “ Alz fumate, nervis longitudinalibus saturatioribus.” Imago, 3%. Baeti propinquo similis (q. ef.) sed minor. Macule laterales in abdominis medio pellu- on the Hphemeride. 107 cide. Inter nervos longitudinales, super marginem terminalem, nervulee forsan duplices sint.” - 2. “ Caput, thorax et abdomen pallide rubiginosi: horum primum et ultimum interdum obfuscata. Femur anticum plus aut minus rubiginosum. Venter pallide flavus vel virescens.” (Walsh.) Long. corp. 6 2°5-4, 9 2°5-3; set. ¢ 4°5-5°5, Q 3- 4-5; exp.al. ¢ 9 8-10°5 mm. Hab.—Rock Island, Hlmois. (Walsh.) Oloeon vicinum. Cloe vicina, Hag. 1861. Imago. 6. Oculi rufi. Thorax fulvus, alis vitreis. Pedes albicantes ; antici bases versus fulvi. Abdomen album, pellucidum, tribus segmentorum apicalium supra fuscis, et setis albidis.” 9. “ Corpus cretaceum, alis vitreis, pedibus et setis albicantibus.” (Hag.) Long. corp. ¢ 4; set. ¢ 10, 9 6; exp. al. 10 mm. Hab.—Washington. (Hag.) Cloeon vitripenne. Ephemera (Cloe) vitripennis, Blanch. 1851. Imago. ‘“ Fusco-virescens ; capite supra flavo-rufo; alis vitreis, iridicoloratis ; pedibus pallide testaceis, me- diis et apicibus femorum plus aut minus fuscis.” (Blanch.) Hab.—Chili. (Blanch.) Genus CENTROPTILUM. (Ala antica, Pl. II. fig. 8.) Ephemera, p., Mil. 1776; Cloeon, p., Ste. 1835-6; Cloe, p-, Burm. 1839; Baetis (A), Htn. 1868; Centroptilum, Etn. 1869. Nympha agilis; segmentorum abdominis 1-7 laminis branchialibus simplicibus et integris, ovatis vel obovatis. Maxillarum superiores palpis quadri-articulatis ; articu- lorum primus brevissimus, secundus longus et ceteris conjunctim equalis. Maxillarum inferiores dimidiis labii 108 Rey. A. E. Eaton’s Monograph subsequales, acute subtrigonales, anguste, palpis biarticu- latis, depressis, articulis longitudine subzequalibus ; arti- culorum ultimus apice late expanso subtruncato. Hi Cloeonis subimaginis habitus admodum similis est. Imago. Cloeoni simillima; nisi alis posticis binervatis, et per-angustis. Centroptilum luteolum. (Forceps et ala postica, Pl. V. fig. 13, 18a.) Ephemera luteola, Mil. 1776. (?) H. albipes & parvula, Scop. 1763. Cloeon ochraceum, hyalinatum & albipenne, Ste. 1835-6. Cloe halterata, Burm. 1839. Cloe translucida, ochracea, hyalinata & albipennis, Pict. 1843-5; Cloeon translueida, halterata, hyalinata, albipennis & ochracea, Walk. 18538. Cloeon bioculatum, Hag. 1863. Baetis lu- teolus, Etn. 1868; Centroptilum luteolum, Ktn. 1869. Subimago, v. v.s. Als vix fumatz, vel pallidissime flavescentes. Femora ochracea, tibiz cineres, tarsi nigricantes ; setee fumatz vel cinerez. Imago, v.v.s. 6. Oculi turbinati acute vel saturate carnei, inferiores sub-olivacei. Tergum thoracis fuscum, vel piceum, vel atrum. Alee vitrez, nervis longitudinali- bus vix flavescentibus. Pedes cretacei, tibus tarsisque plus aut minus canis vel fumatis. Segmentcrum abdo- minis sex priora vitrina, alba, maculis apud apices utrinque furfurosis, aut apicibus in toto furfurosis ; ceetera furfurosa vel fusca, juncturis ochraceis; venter pallidus, apice testaceo. Sete forcepsque albze. j 2. Dorsum furfurosum, vel testaceum, vel fusco- olivaceum; venter pallidus. Oculi olivacei, vel atro- virentes, vel atri. Thoracis tergum umbrinum, vel fusco-olivaceum. Pedes vel virescenti-flavi, tibiis tar- sisque pallide virescenti-griseis, vel flavescentes, tibiis tarsisque canis. Abdomen interdum ochraceo-furfuro- sum ; trachez subcutanez saturatiores. Long. corp. ¢ 6-7, 2? 5-6; al. ¢ @ 6-7; set. ¢ 10- 14, subim. 7; set. 9 subim. 6-9 mm. Hab.—Switzerland, Germany, Great Britain and Nor- way (Alten); also Hudson’s Bay territory. April to No- vember. on the Ephemeride. 109 Centroptilum pennulatun. (Forceps et ala postica, Pl. V. fig. 14, 14a.) O. pennulatum, Htn. 1870. Imago, v.v.s. ¢. Oculi turbinati carnei, inferiores olivacei vel atri. Prothorax supra nigricanus vel furfu- rosus; meso- et meta-thoraces fusci vel furfurosi. Ale vitrine. Femora alba, apicibus cretaceis; tibiz tarsi- que albi, ultimis articulorum vix cervinis. Segmentorum abdominis 2-6 vitrina, alba, juncturis vix castaneis ; cetera supra castaneo-rubiginosa, infra ochro-leuca. Se- te forfexque albz. 9. Oculi virescenti-grisei: vertex capitis flavus, striga lata longitudinali saturate rubiginosa. Tergum thoracis furfurosum. Pedes cani, femoribus subcretaceis, vel gamboso-albidis. Abdomen supra pallide virescenti- griseum, juncturis pallidioribus ; infra pallidum immacu- latum: striga dorsalis longitudinalis in medio, apices segmentorum, et macule trigonales ex his ad latera pro- rectz, lutescentes. Seta pedesque eis maris similes. one. corp. 6 8-95.92 8; al. g 2 8; set. ¢ 14-17, ¢ 11 mm. Hab.—The Manifold, lam, Staffordshire, and Grazely, near Reading. August to October. Centroptilum lituratum. Ephemera culiciformis, Scop. 1763 (nee Lin.). Cloe litura, Pict. 1843-5; Cloeon litura, Walk. 1853. Subimago. ‘“ Alz pallide fuscescenti-grisex. Setze fuscee.” Imago, 3. “ Oculiturbinatisulphurei. Tergum thoracis fuscum, strigi atré im medio a fronte retrorsum sed non metathorace tenus attinente: metathorax punctis atris duobus. Ale vitrine ; pedes flavescentes. Abdomen rufo- fulvum, apicem versus obscurius, maculis lateralibus. Sete flavescentes, juncturis atris.” 9. Flava, oculis nigris, leis rufescentibus parvis duabus super mesothoracem, et maculis paucis lateralibus super abdomen.” (Pict.) Long. corp. ¢ 8, set. 12, exp. al. 17 mm. Hab.—Mt. Saleve (Pict.); in the autumn. 110 Rey. A. E. Eaton’s Monograph Centroptilum stenopteryx, 0. sp. (Ala postica et forceps, Pl. V. fig. 15, 15a.) Subimago, v. s. s. ¢. Ale vix fumate. Thorax ochraceus, pedibus testaceis, tarsis pallidis. Imago, v.s.s. 6 uxori simillimus, corpore furfuroso, setisalbis. [Oculi turbinati olim rufescentes ? ]. Long. corp. ¢ 4, 2 45; al. d 4, 2 5°; set. d @ 5-6 mm. Hab.—Carinthia (Zeller’s MS.). Genus BaAgEtis. (Ala antica, Pl. II. fig. 9.) Ephemera, p., Lin. 1746; Baetis, Leach, 1815; Cloe, p., Burm. 1839; Brachyphlebia, Westw. 1840; Cloeon, p., Walk. 1853. Nympha agilis, laminis branchialibus simplicibus, in- tegris, ovatis vel obovatis, septem utrinque. Palpi maxillares biarticulati, articulis longitudine subeequalibus ; superiores teretes ; inferiores proximis articulorum sub- cylindricis, apicalibus depressis et spathulatis atque lat- eraliter incisis. Dimidia labu acuta, subulata, maxillis angustiora. Subimago inter quiem Cloconi vel Centroptilo simulat. Imago. Oculi maris partiti, superioribus dimidiorum sub-turbinatis. Ales quatuor; posteriores minime, ob- long, costi unidentati, atque tribus vel duobus nervo- rum longitudinalium, quorum secundus vel simplex vel divisus sit. Seta due (B. ferrugineus tamen tertiam mediam brevissimam habet). Forcipis artus quadri- articulati, penultimis articulorum plerumque longissimis. Femina ovivalvuli caret; nisi fugax sit. The species mostly inhabit rivers and streamlets. They appear principally in spring and early in the au- tumn; but the exact period depends upon climate. Monstrous specimens seem to be more frequently met with in the autumn than in the spring; they throw much light upon the morphology of insects in general. on the Hphemeride. 111 Baetis binoculatus. (Forceps et ala postica, Pl. V. fig. 16, 16a.) Ephemera bioculata, Lin. 1758. #H. fuscata, Lin. 1761. Li. diaphana, Mil. 1776. HE. flava, Schr. 1776. HH. lutea, Foure. 1785. EH. notata, Gmel. 1790-3. LH. euliciformis, p. Ol. 1791. #. striata, (?) Walck. 1802. Baetis bioculatus, Leach, 1815; B. bioculata, Sam. 1819. JB. flavescens (subim.) & autwmnalis (monstr. 3), Curt. 1834. B. fuscata, (?) Ste. 1855-6. Brachyphlebia bio- culata, Westw. 1840; Cloe bioculata & autumnalis, Pict. 1843-5 ; Cloeon bioculata (excl. g.), autumnalis & striata, (?) Walk. 1853. Cloeon pumilum, Hag. 1863; Cloe punila, Oul. 1867. Subimago, v.v.s. Alarum antic fumate, posteriores cretacez. Pedes maris femoribus virescenti-albis, tibiis fumatis, et tarsis nigricantibus; femina femoribus anticis viridi-olivaceis, maculis obscuris singulis apices versus, atque posterioribus femorum et tibiarum stramineis, tarsis omnibus corvinis. Sete fumatee. Imago, v.v.s. &. Oculi turbinati citrini, vel acute flavi ; inferiores flavo-, vel atro-virentes. Var.1. g. Thoracis tergum furfurosum, vel fuscum, vel atro-piceum. Ale vitrine, fulgore auroreo, et nervis albicantibus. Pedes cretacei; tibie tarsique antici atque ungues fumati; posteriores tibiarum albe. Seg- mentorum abdominis 2-6 vel 7 cretacea vel flavo-alba, spiraculis rubiginosis vel atris ; ceetera supra vel furfu- rosa, vel fusca, vel fusco-olivacea, juncturis sulphureis ; subtus ochracea vel saturate olivacea. Sete albz. 2 et Var. 2 g. Corpus pallide fuscum, vel fusco- olivaceum: subtus olivaceum. Oculi feminz atri, vel atro-picei. Alze vitrine, nervis fuscis, vel piceis. Pedum antici femoribus fusco-olivaceis, tibiis et tarsis fuligi- nosis, vel tibus corvinis et tarsis anthracinis: posteriores femoribus prasino-olivaceis, obscure apud apices maculatis, vel annulatis atque tarsis griseis. Abdomen supra apici- bus segmentorum anguste fuscis, et tracheis subcutaneis vel atris vel fuliginosis: segmentum singulum subtus apud basin punctis obscuris duobus. Sete vel virescenti- albze, vel albee atque bases versus nigricantes, vel cinereze atque bases versus corvine vel atre. Long. corp. ¢ 6-8, 2? 4-7; al. g 6-8, 9 6-7; set. 3d 12-14, subim. 7-10, 2 10-12, subim. 8-10 mm. 112 Rev. A. E. Eaton’s Monograph Hab.—Great Britain, France, Switzerland (Pict.), Germany, Moscow (Oul.), Scandinavia, and Hudson’s Bay (Dale Mus.). May to October. In rivers. Mr. Walker’s specimen from N. America (g., Brit. Mus. Cat.) represents a distinct and undescribed species. Baetis debilis. Cloeon debilis, Walk. 1860. Imago ?, v. s. s. ‘ Fulva, capite nigro, abdomine testaceo; setis pedibusque albis, alis vitreis, venis albis.” Long. corp. 5, exp. al. 12 mm. Hab.—Hindostan. (Walk.) This species can only be identified by the type. Baetis scambus. (Forceps et ala postica, Pl. V. fig. 17, 17a.) B. scambus, Etn. 1870. Subimago, v. v.s. . Ale setaeque cinerex. Pedes cretacei vel virescenti-albi, tibuis tarsisque cinereis. For- ceps cretaceus. @. Femora maculis vix discretis, subapicalibus cinereis. Imago, v. v. s. ¢. Oculi turbinati caryophyllacei, vel caryophyllaceo-fuliginosi: inferiores nigri. Tergum thoracis aterrium vel piceum: alze vitrine. Pedes cretacei vel virescenti-grisei; tarsis anticis fumosis, pos- terioribusque tibiarum et tarsorum virescenti-albis, junc- turis et unguibus vix obscuris. Abdominis segmentorum quatuor apicalia fusca, cetera alba vel virescenti-alba, fusco vix suffusa. Sete albze, prioribus juncturarum vix obscuris. @. Corpus olivaceo-fuscum. Ale vitrine, nervis atro- piceis. Oculi saturate olivacei. Femora olivacea ; tibiae tarsique saturate fumosi. Seta quoque fumosz, junc- turis vix obscuris. hong. corp. ¢ 6, 9 6:5; al. 6 0; 9 72 Setencamics subim. 7; set. 2 9-10, subim. 5 mm. Hab.—Ashbourne and Norbury, Derbyshire. June and September. on the Hphemeride. 113 Baetis finitimus, noy. sp. (Forceps et ala postica, Pl. V. fig. 18, 18a.) Imago, v. v.s. ¢. Oculi turbinati fuliginosi. Tho- racis tergum aterrimum politum. Ale vitrine, nervis pellucidis. Pedes albi; antici femoribus cretaceis. Ab- domen album, tribus segmentorum apicalium fuscis. Seta forcepsque albze. Var. v. v. s. Abdomen fuscum. Pedes virescenti- grisei, femoribus apices versus punctis singulis paulo obscuris, et tarsis anticis fere griseis. 2, v.v. 8. Oculi atro-fuliginosi. Pedes virescenti- nigri, tibus et tarsis saturate albis. Abdomen piceum, apicibus segmentorum obscuratis. Sete albe. Long. corp. ¢6 ? 5; al. ¢ 2 6; set. J 12-16, 9 7 mm. Hab.—The streamlet by the Oratory, on the right- hand side of the Val Montjoie, between Contamines and Notre Dame de la Gorge. July. Bactis atrebatinus. . (Forceps et ala postica, Pl. V. fig. 19, 19a.) B. atrebatinus, Etn. 1870. Subimago, v. v.s. Ale dg cinerew: 2 saturate fu- matz. Pedes ¢ olivacei vel saturate virescenti-grisei, posterioribus tibiarum cinereis et lineis singulis brevibus externo-basalibus atris: tarsorum antici atri, posteriores saturate nigricantes juncturis atris, omnes ultimis articu- lorum piceis: 9 tarsis rufo-piceis, juncturis atris. Sete é corvine, 2 atro-picez. Imago, v. v. 8s. ¢. Oculorum turbinati rufo-hepati- colorati, inferiores fuliginosi. Tergum thoracis aterri- mum politum. Ale vitrine; antice tribus prioribus nervorum longitudinalium virescenti-griseis. Pedum an- tici femoribus atro-virentibus, tibiis atris singulis maculis pallidis sub-apicalibus, et tarsis saturatissime cinereis ; posteriores saturate olivacei, apicibus tibiarum tarsorum- que virescenti-griseis. Segmentorum abdominis 2-7 fumata, singula lineis brevibus. punctisque obscuris duo- TRANS, ENT. soc. 1871.—ParT I. (MARCH.) I 114 Rey. A. HE. Eaton’s Monograph bus dorsalibus, subtus strigis atris duabus, atque junc- turis virescenti-albis; cetera fusco-picea, Juncturis flavis. Sets rubido-albz, juncturis obscuris. Forceps fumatus. ? mari simillima; secundo articulorum antennalium fere omnino rubiginoso, vertice capitis inter ocellos piceo; abdomine vel luteo- vel rufo-piceo, juncturis ochraceis, setisque fuliginosis. Long. corp. ¢ 7, 2 8; al. 6 6-7, 9 8; set. g 11-13, subim. 8°5; set. 9 8-10, subim. 7°5 mm. Hab.—The river Kennet near Reading, Berkshire; in October. Baetis Rhodani. (Forceps et ala postica, Pl. V. fig. 20, 20a.) Cloe Rhodani, Pict. 1848-5; Cloeon Rhodani, Walk. 1853. Cloe maderensis, Hag. 1865. Imago, v. v.s. &.Oculi turbinati lateritio-fuliginosi. Thoracis tergum aterrimum politum. Ale vitree, nervis vix fuscis. Pedum antici tibiis tarsisque nigricantibus ; posteriores pallidiores, femoribus saturate virescenti- griseis vel ‘pallide olivaceis, et tarsis vel atris vel nigri- cantibus. Dorsum abdominis fusco-virescenti-griseum, juncturis ochraceis vel canis, et tribus segmentorum apicalium saturatioribus; subtus saturate virescenti-gri- seum, segmentis singulis seepe strigis brevibus divergen- tibus prope bases, punctisque sequentibus duobus, nigri- cantibus. Sete virescenti-grisee, juncturis fuliginosis vel rubiginosis. Var. ¢ im. v. v. s. Oculi turbinati carneo-hepati- colorati ; inferiores saturate virescenti-grisei. 'Thoracis tergum luteum, postice nigro maculatum. Pedes cretacei, unguibus atris; antici gamboso tincti, tarsis fumatis. Ale vitrine, nervis virescenti-griseis, subcostis radiisque bases versus atris. Abdomen album, quatuor segmen- torum apicalium luteis; segmenta pallida, apicibus luteo marginatis, marginibus ad latera antice productis. For- ceps albus. Seta albee, juncturis rubiginosis. Hab.—In the same stream as B. finitimus (p. 113). ? im. mari simillima. Tergum thoracis interdum brunneo-fuscum. Abdomen opacum. on the Ephemeride. 115 _ Subimago, v. v.s. ¢. Ale cinerew. Pedum antici virescenti-grisei, maculis singulis crescentiformibus fe- morum apices versus obscuris, tibiis nigricantibus, et tarsis atris; posteriores cretacei, tibiis fumatis, et tarsis atris. Sete atro-corvine. Long. corp. g 5°5-9, 9 6:5; al. g 5°5-9, 2 12; set. 6 13-19, subim. 10°5; set. 9 16 mm. Hab.—Dovedale, Derbyshire, and Dorset; Geneva and Contamines; Corsica (Bellier); and Madeira (Wollaston), April to October. The Wollastonian specimens ticketted 69 & 70 appear to me the same species as the others. Baetis pheops. (Forceps et ala postica, Pl. V. fig. 21, 21a.) Ephemera bioculata (?), Fourc. 1785. H. testacea (?), Gmel. 1790-3. Baetis vernus (?), Curt. 1834. B. culici- formis, (pheopa), striata, verna, & H. dubia, Ste. 1835-6. Cloe verna, Pict. 1843-5; Cloeon verna, Walk. 1853. Baetis phoeops, Etn. 1870. Subimago, vy. v.s. Ale fumatze vel murine. Femora testaceo- vel prasino-grisea, vel etiam virescenti-alba, maculis singulis obscuris v-formatis prope apices; tibiz fumatze, apicibus anticarum atris; tarsorum antici atri, posteriores cinerei juncturis atris. Sete forfexque fumatee. Imago, v. v.s. o. Oculorum turbinati fuliginosi, in- feriores corvini. Tergum thoracis aterrimum vel piceum, politum, in exemplari recens nato fuscum. Ale vitrine, nervis longitudinalibus sub-fuscis, et fulgore hyacinthino. Pedum antici femoribus sub-olivaceis, tibiis tarsisque canis, macula rotundata obscur’ prope apicem cujusque illarum; posteriores femoribus vel virescenti-griseis vel prasino-cretaceis, tibiis albis, et tarsis canis. Abdomen vel dorso fusco et ventre cinereo; vel dorso piceo-fusco, juncturis canis ; vel virescenti-griseo, tribus segmento- rum apicalium saturate fuscis. Sete albz vel fumatee. Pes forcipis duobus prigribus articulorum canis, et ceteris albis. ? mari simillima. Oculi atro-fuliginosi, vel atri. Tergum thoracis vel atrum, vel piceum, vel piceo-fuscum. ie 116 Rey. A. E. Eaton’s Monograph Pedes femoribus olivaceis; crura cana vel anthracina juncturis atris, sed antica saturatiora. Setz albze, cor- vines bases versus. Long. corp. ¢ ¢ 6-8; al. ¢ 6-7, 9 7-93 set. 3 14- 16, subim. 5; set. 2 10-12, subim. aan. Hab.—Great Britain, and Norway (Hammerfest and Alten). It mostly inhabits streams and rivulets, and appears in England in May, June, September and Octo- ber. Baetis tenazx. (Forceps et ala postica, Pl. V. fig. 22, 22a.) B. tenaz, Etn. 1870. Imago, vy. v. 8s. @. Oculorum turbinati saturate fali- ginosi, inferiores nigro-fuliginosi. Tergum thoracis ater- rimum, politum. Ale vitrine, nervis albido-pellucidis. Pedes femoribus olivaceis, anticis crurum cinereis, et posterioribus fumosis juncturis vix obscuris. Abdomen fusco-olivaceum, juncturis pallidis, et setis albis. Pes forcipis albicans, proximo articulorum interdum obscu- rlori. ¢ mari simillima. Long. corp. ¢ 6-8, al. 7, set. 14-16 mm. Hab.—Ashbourne Green, Derbyshire; in rills and streamlets. June. Baetis buceratus. (Forceps et ala postica. Pl. V. fig. 23, 23a.) B. buceratus, Etn. 1870. Subimago, v. v. s. Alarum antice fumate, posticas pallidiores. Pedum antici femoribus olivaceis, tibiis nigri- cantibus, et tarsis atris; posteriores vel olivacei tarsis et maculis pre-apicahbus femorum crescentiformibus atris, vel femoribus saturate cretaceis, tibiis fumosis, et tarsis atris. Sete pices. Pes forcipis primo et secundo articulorum pallidis, reliquis fumosis. Imago, v. v. 8s. @. Oculi turbinati saturate fuligi- nosi, vel fuliginoso-hepaticolorati. Tergum_ thoracis on the Ephemeride. 117 aterrimum. Ale vitrine, tribus prioribus nervorum longitudinalium vix obscuris. Pedum antici saturate olivacei, cruribus atro-corvinis, vel nigricantibus maculis pre-apicalibus tibiarum atris, et juncturis tibio-tarsalibus albicantibus: posteriores vel femoribus et tibiis olivaceis atque tarsis fumosis, vel tarsis atro-corvinis juncturis atris; vel cruribus pallide nigricantibus, juncturis vix obscuris ; vel cruribus albis, juncturis atris. Abdomen supra vel fusco-piceum, juncturis pallidis ; vel cum 2-6 segmentorum virescenti-griseis, et interdum apicibus, lineolis divergentibus duabus dorsalibus, atque strigis e spiraculis, obscuris: infra nigricans, juncturis albidis, seepe duobus segmentorum apicalium ochraceis. Pes forcipis primo et secundo articulorum olivaceis, et ceteris plus aut minus nigricantibus; aut primo solum olivaceo. Setze nigricantes, seepe albicantes apices versus. I neglected to describe the female. Long. corp. ¢ 8-9, al. 8, set. 10-16 mm. Hab.—The Holybrook and Kennet, near Reading. April and May. + Baetis amnicus, nov. sp. (Forceps et ala postica, Pl. V. fig. 24, 24a.) Imago, v.v.s. 6. Oculiturbinati saturate fuliginosi ; inferiores atro-fuliginosi. ‘Thoracis tergum aterrimum, suturis pallidis. Alee vitrine, lurido tinctz, nervis atro- olivaceis; anticz areis marginalibus apices versus paulo obscuratioribus. Pedum antici saturate viresceuti-grisel, tibis tarsisque fumatis vel nigricantibus; posteriores femoribus imterdum vix ochraceo-tinctis, genubus ru- fescenti strigatis, tibiis fere cervinis, et tarsis obscuris juncturis nigris. Abdomen supra fuscum, juncturis vix pallidis; subtus in majore parte cinereum. Setz albee vel cinerez, bases versus juncturis obscuris. Forceps ater, apices versus saturate fuliginosus. - 9. Ale vitrine, nervis virescenti-griseis. Pedes virescenti-grisei vel olivacei, tibiis tarsisque nigricantibus. Sete nigricantes. Long. corp. ¢ 9-10, 2 7; al. ¢ 10, 2 8; set. g 26, 9 13 mm. Hab.—Barberine, Nant Bourant, and Mottet, at an altitude of some 4560 feet. July. In mountain torrents, whence the specific name. 118 Rey. A. HE. Eaton’s Monograph Baetis alpinus. Cloe alpina, Pict. 1843-5 ; Cloeon alpina, Walk. 1853. Imago, 3. “Oculi rufi. Tergum thoracis saturate fuscum. Als vitrez, nervis fulvis, paucis distinctioribus in ares marginalis apice. Abdomen fuscum, juncturis albidis ; setee albze, juncturis fuscis.” —(Pict.) Long. corp. ¢ LO, set. 11, exp. al. 23 mm. Hab.—A stream from Mt. Brevent in the valley of Chamounix, in August. (Pict.) Baetis melanonyz. Cloe melanonyx, Pict. 1843-5; Cloeon melanonyx, Walk. — 1853. Imago, ¢. ‘ Corpus saturate fuscum, ventre pallidiore. Oculi turbinati rufi. Pedum antici fusci; posteriores cretacei, unguibus atris. Ale vitrez, nervis fuscis, transversalibus subtilissimis. Setze flavescentes, junc- turis fuscis.””? (Pict.) : Long. corp. ¢ 7, set. 9, exp. al. 18 mm. Hab.—La Valle d’Entremont, Faucigny ; at the end of June. (Were the eyes reddened in alcohol ?). Baetis pumilus. (Forceps et ala postica, Pl. V. fig. 25, 25a.) Ephemera mutica (?), Lin. 1758=L. striata, Lin. 1761. Cloe pumila, Burm. 1839. C. striata (?), Pict. 1843-5. Cloeon pumila, Walk. 1853. B. pumilus, Ktn. 1870. Subimago, v. v.s. Ale anthracine: pedes virescenti- grisel, tarsis nigricantibus ; sete nigricantes. Imago, v. v. s. g@. Oculi turbinati atro-fuliginosi. Tergum thoracis aterrimum, politum. Ale vitrine, ful- gore talcoso. Pedes albi, tarsis, apicibus tibiarum, femo- ribusque anticis, nigricantibus. Segmentorum abdominis 2-7 alba, pellucida; cetera supra furfuroso-fusca vel fusco-castanea, subtus fusca. Forceps et sete albe. ?. Capitis vertex strigis duabus piceo-rufescentibus. Tergum thoracis atrum. Pedes virescenti-grisei, tarsis fuscis. Abdomen supra fusco-furfurosum, juncturis, et on the Ephemeride. 119 spe linea longitudinali in medio, strigisque curvatis duabus ad bases segmentorum singulorum intermedio- rum, ochraceis; subtus serie notularum L-formatarum hepaticoloratarum utrinque. Sete vix cervine. Oculi olivacei. Long. corp. 3 @ 5-7; al. g 4-6, 9 6-8; set. ¢ 11- 13, subim. 10; set. @ 7°5-10, subim. 10 mm. Hab.—Wales, England, Belgium, Germany, Austria, Switzerland and Corsica. It frequents rivers, from May to October. Baetis niger. (Forceps et ala postica, Pl. V. fig. 26, 26a.) Ephemera nigra, Lin. 1761. Cloe diptera, Ronalds, 1856. B. wiger, Ktn. 1870. Subimago, v.v.s. Ale atrescentes. Pedes ¢ pallide fumati; ? femoribus prasinis, strigis singulis brevibus obscuris ab apicibus anticorum, tibiis fumatis, et tarsis cervinis ultimis articulorum fumatis. Sete ¢ grisex, @ cineree. Imago, v.v.s. ¢. Oculi turbinati fuliginosi. Ter- gum thoracis aterrimum, politum. Ale vitrine. Pedes vel fumati, vel saturate virescenti-albi, vel prasini; posterioribus crurum fumatis, anticis cinereis cum apici- bus tibiarum obscuris. Segmentorum abdominis 2-7 fumata ; cetera supra vel rubigineo-fusca, vel piceo-fusca, subtus virescenti-grisea. Sete albe vel cane, sepe juncturis vix obscuris. ?. Oculi fusco-fuliginosi. Pedes virescenti-testacei, juncturis tarsorum nigricantibus, Abdomen supra cas- taneo-piceum, juncturis et sepe strigis brevibus tribus ad bases paucorum intermediorum ochraceis; subtus fuliginosum vel hepaticoloratum, pallidum, seepe notulis lateralibus L-formatis obscuris. Sete fumatze, vel cane, vel canz juncturis rufescentibus. Long. corp. d ¢ 6-7°5; al. 3 ¢ 6-7; set. ¢ 10-11, subim. 9; set. 9? 6-8°5, subim. 7 mm. Hab.—England, and perhaps Sweden. May and June, and also September. I have seen an undescribed Australian species, which is allied to some of the foregoing European species. 120 Rey. A. E. Eaton’s Monograph Baetis (2) fuscus. Cloe fusca, Schn. 18405. Imago, ?. “Tergum thoracis fuscum ; alee vitrine, nervis fuscis, antica area costali apicem versus fulvescente, et nervis transversalibus pluribus. Pedes saturate testa- cei. Abdomen supra rufescens, apicibus segmentorum brunneis; subtus testaceum. Setz saturate testacex, fusco annulate.” Long. corp. @ 2°75,” set. 6°25. Hab.—Messina. April. (Schn.)* Baetis posticatus. Cloeon posticata, Say, 1823; Cloe posticata, Hag. 1861. Imago, v.s. 6. Oculi turbinati saturate rufo-fusci. Tergum thoracis aterrimum. Ale vitrine. Pedes albi; antici vix obscuriores bases (femorum ?) versus. Seg- mentorum abdominis 2-7 pallide czrulescenti-hyalina, ceetera saturate fusca. Sete albee.”’ (Say.) Long. corp. 8, set. 19 mm. Hab.—* Shippingsport. End of May.” Baetis wnicolor. Cloe unicolor, Hag. 1861 (nec Curt., Burm.). Imago, s. s. ¢. “Corpus saturate piceum. Ale vitrine, interdum nervis longitudinalibus obscuris; pos- * The following European species are of uncertain position, and hardly recognizable. 1. Baetis culiciformis. Ephemera culiciformis, Lin. 1758. LE. albipennis, Walck. 1802. Cloe culiciformis, Pict. 1843-5. Imago. ‘Eph. cauda biseta, alis albis, corpore fusco.” (Lin. 1758.) ‘‘Culice paulo major. Thorax nigricans. Abdomen fuscum. Sete caudales longitudine corporis. Tubercula dno supra oculos, crassa, magna, livida.”” (Lin. 1761.) Hab.—Sweden. 2. Baetis speciosus. Ephemera speciosa, Pod. 1761. _ Imago. ‘“E. speciosa, pedibus anticis longissimis cyaneis, alis albis, corpore fusco.”’ (Pod.) Long. corp. 3 lin. Hab.—Incog. on the Ephemeride. 121 ticze inter nervos duos sub-opace. Pedes pallide flaves- centes, apicibus tarsorum obscuris. Set pallidz, apices versus obscure. 9. Vertex capitis strigis longitudinalibus _latis duabus. Abdomen acute rubiginosum, juncturis et macu- lis lateralibus pallidis.” (Walsh.) G.s.s. ‘* Adneo-fuscescens, alis vitreis, pedibus pal- lide flavescentibus, et setis albis.” (Hag.) Long. corp. ¢ 2°5, 9 4-5; set. d 5, 9 6-10; exp. al. 6 9, ¢ 10-13 mm. - Hab.—Washington, and (?) Porto Rico (Hag.) ; Rock Island, Illinois (Walsh). Baetis propinquus. Cloe vicina, Walsh, 1862 (nec Hag. 1861). OC. propin- qua, Walsh, 1863. Subimago. ‘“ Ale fumate, nervis longitudinalibus saturatioribus.” Imago. ¢. “Piceus. Ale vitrine; postice inter nervos duos opace. Pedes pallidi, femoribus anticis pallide rubiginosis et apicibus tarsorum obscuris. Seg- mentorum abdominis 2-7 alba, pellucida, punctis lateralibus (ad spiracula ?) obscuris ; cetera supra picea, subtus opace albicantia. Setz albicantes, interdum annulate.” Q. ‘* Corpus supra vel rubiginoso-piceum, vel rubigi- nosum. Abdomen subtus rubido-album. Femora antica fere nunquam maculata.” (Walsh.) Long. corp. ¢ 3-5, 2 3°5-4°5; set. ¢ 7°5-10, subim. 5; set. 9 5-9, subim. 4; exp. al. ¢ 9-11, 2? 8°5-l4mm. Hab.—Rock Island, Illinois. (Walsh.) Mr. Walsh considers it to be very closely related to B. posticatus.* * The same author supposes that the following may be a Baetis. Baetis verticis. B. verticis, Say, 1839. ‘‘Corpus ochroleucum vel cretaceum. Thorax strigis rubiginosis dua- bus, antice confluentibus et postice obsolescentibus; plurimi nervorum alarum atri; pedes albi, antici apicibus femorum rubiginosis, et apicibus tibiarum juncturisque tarsorum fuscis.”’ Long. corp. et set. supra 6 mm. Hab.—Indiana (Say). 122 Rey. A. E. Eaton’s Monograph Baetis pygmeus. Cloe pygmcea, Hag. 1861. Imago, s.s. 9. “ Corpus fusco-griseum, alis vitreis, pedibus setisque albis.” (Hag.) Long. corp. 3, exp. al. 6 mm. Hab.—The St. Lawrence. (Hag.) Baetis fluctuans. Cloe (B) fluctuans, Walsh, 1862. Imago, 9. ‘Corpus brunneo-album. Thorax supra strigis longitudinalibus brunneis duabus, postice conflu- entibus. Ale vitrine, nervis longitudinalibus plerumque brunneis, interdum quoque brunneo marginatis bases versus: area marginalis anterioris maculis parvis brun- neis quindecim vel sedecim, paucis confluentibus ; striga pallida brunnea pone subcostam, cujus margo posticus variabilis et irregularis, interdum sex- vel septem-den- tatus, maculas rotundas pellucidas (circa xiv.), paucis confluentibus, inclaudit. Abdomen plerumque brunneo- album, interdum brunneo varium, interdum etiam pallide brunneum, sexto segmentorum brunneo. Tarsorum apices junctureque fusci.” (Walsh.) Long. corp. ? 6-7, set. 10°5-12, exp. al. 13°5-17 mm. Hab.—Rock Island, Illinois. Baetis pictus, nov. sp. (Ala postica, Pl. V. fig. 27.) Subimago, v. s. s. ¢ 2. Ale nigricantes, nervis transversalibus marginibus anguste obscuris. Pedes ee 5 3" pallidi, juncturis tarsorum obscuris. Corpus subpiceum. Imago, v.s.s. ¢. Thorax supra fusco-piceus. Ale vitrine, invariz, nervis pellucidis. Pedes veluti in ¢. Abdomen olivaceo-fuscum, in medio paulo pallidius ; subtus saturate rubido-album, rubido crebrissime punc- tatum. Sete albze, juncturis obscuris. 2. Tergum thoracis saturate lutescens. Ale vitrine, nervis longitudinalibus piceis, et transversalibus opace on the Hphemeride. 123 albis: area marginalis anticz fusco variegata; area sub- marginalis plus aut minus fusca, interdum maculis rotun- dis pellucidis inclausis, apice fusco nebuloso; margo terminalis peranguste fuscus et albo invicem marginatus : ala postica seepe apud basin et usque ad coste medium fuscescens. Pedes testacei, vel cervino-albicantes, femo- ribus punctis rotundis fuligineis irroratis, paucis con- fluentibus, atque tarsis albicantibus juncturis et ultimis articulorum fuliginosis. (Abdomen decoloratum.) Seta albee, juncturis atris. Long. corp. '¢ '5-6°5; al. 6 65-7, 9.7; set. circa 14, 2? circa 15 mm. Hab.—Texas. Baetis (?) undatus. Cloe undata, Pict. 1843-5 ; Oloeon undata, Walk. 1853. Imago, @.s.s. ‘ Pallide flavescens. Ale vitrine ; antica apud marginem costalem fusca, maculis rotundis pellucidis variata, fascia transversali in medio nebulosa, et nebuli magna super marginem terminalem, fuscescen- tibus. Sete albidee, juncturis in ¢ atris, in @ fuscis ” (Pict.). ‘* Pedes flavescentes ; tarsorum apices obscuri ” ( ¢;,Hag.). Long. corp. 2 7, set. 10, exp. al. 15-19 mm. Hab.—Red River, and New York (Hag.); Mexico (Pict.). Baetis fasciatus. Cloe fasciata, Pict. 1843-5 ; Cloeon fasciata, Walk. 1853. Imago, ?.s. 8s. “Tergum thoracis pallide fuscum. Ale vitreze: antica margine costali, fasctis transversali- bus obliquis duabus, strigis transversali obliqua prope marginem terminalem alteraque brevi super marginem terminalem ita conjunctis ut maculas pellucidas claudunt, et macula trigonali e costa inter strigam et ultimam fascia- rum fasciz ipsi conjuncti, et denique maculd conspicud in medio inter basin et primam fasciarum, fuscis. Abdo- men saturate fuscum, setis lutescentibus fusco annulatis.” (Pict.) Long. corp. 9 7, set. 8, exp. al. 19 mm. Hab.—Brazil. (Pict.) 124 Rey. A. E. Haton’s Monograph Some undescribed Australian species, which have the anterior wings more or less coloured along the costa, have been submitted to my inspection. I have seen, besides these, a Californian undescribed species, with the wings very distinctly marked with fuscous blotches along the costa, and with an unusual number of cross-veinlets in the wing. Their wings are figured in Pl. V. fig. 28, 29; Pl als fie. 1. Baetis ferrugineus. Cloe (A) ferruginea, Walsh, 1862. Subimago. “ Ale fumatze; posteriores et anticarum postcostee pallidiores. Ala antica crassioribus nervorum et paucis alis, bases versus, fuscis, atque nervis trans- versalibus cum horum marginibus albido-pellucidis.” Imago, s.s. ¢. Corpus ferrugineum (rubiginosum). Ale vitrine ; anticee apud costas vix flavescentes, tribus prioribus nervorum longitudinalium flavescentibus, sed paucis alis fuscescentibus. Pedes pallide flavescentes, apicibus tibiarum et tarsorum, juncturis tarsorum, et proximo articulorum tarsi antici, fuscis. Abdomen supra rufescenti-brunneo irroratum, mterdum pene piceum ; subtus palliderubido-album. Sete forcepsque albicantes ; illarum intermedia brevissima.” (Walsh.) Long. corp. $ 6°5-9°5; set. 15-17; al. exp. 15-18 mm. Hab.—Rock Island, Illinois (Walsh) .* * Mr. Walsh thinks that the following species may be allied to B. fer- rugineus. Baetis albus. B. alba, Say, 1824; Palingenia alba, Hag. 1861. '@. Album; vertice fusco. Thorax vix flavescenti-brunneo tinctus ; ‘‘prothorax quadratus, cretaceus ’”’ (Hag.). Alee albide, nervulis apud cos- tas obseuris. Pedes albi; antici breves, obscuri. Long. corp. 11, exp. al. 22 mm. (Hag.) Hab.—The North Red River (Hag.); Winnipeg River (Say). Ephoron leukon, Williamson, 1802. “Oculi nigri. Thorax fuscus. Ale, abdomen, et pedes albi. Ala patentes, reticulate ; sete due.” Long. corp. 12 mm. Hab.—The River Passaick, in the immediate vicinity of Belville; from the end of July to the middle of August. They begin to rise about forty minutes after sunset, moult about half a minute afterwards, and fly nearly as fast as dragon-flies. (Williamson.) I have reasons for supposing that Tipule are called dragon-flies in some parts of England; and if the Ephoron leukon flies as fast as these, its habits conform, thus far, to those of British species of Heptagenia. on the Ephemeride. 125 Genus SIPHLURUS,. (Ala antica, Pl. III. fig. 2.) Baetis, p., Say, 1823 ;| Ephemera, p., Zet. 1840; Pa- lingenia, p.» Walk. 1853; Siphlonurus (err.), Etn. 1868. Nympha agilis, laminis branchialibus utrinque septem: laminarum due priores duplices, czeterze simplices, omnes integre. Palpi tri-articulati, superiores proximo articu- lorum ceeteris subeequali, et ultimo penultimo breviori; inferiores proximo articulorum quoque ceteris subzequali et valde depresso, secundo fere obconico apice obliquo, et vix tertio longiori. _ Super pedes omnes, alis erectis, setisque divergentibus subimago stat. Imago. Oculi g integri; setz due longe (resi- duum intermediz interdum articulatum) ; alee quatuor ; tarsi quinque-articulati, proximo articulorum interdum tibiz adnato. Forcipis pedes quadri-articulati (nisi arti- culus quintus basalis lamini ventrali penultimi segmen- torum obtegatur); articuiorum primus largus, secundus longissimus. Femina caret ovivalvuli ; neque laminam ventralem penultimi segmentorum habet. The species inhabit lakes and rivers, in the Palearctic and Nearctic Regions. From haying omitted to note down the tarsal char- acters of all the species examined by me, I am, unfor- tunately, unable to adopt Mr. Walsh’s convenient sec- tions of the genus ; which are founded upon the structure of the tarsus. Stphlurus flavidus. (Apex abdominis supra, Pl. V. fig. 30.) Baetis flavida, Ed. Pict. 1865. Imago,v.s.s. 6. “ Oculiceruleo-atri. Corpus fur- furosum vel lutescens. Ale vix opace, nervis fuscis ; antice juxta bases, et in areis marginali et submargi- nali apices versus, pallide flavicantes. Pedes fulvi, juncturis fuscis. Abdomen juncturis, et maculis longi- tudinalibus apicem versus, fuscis;” subtus maculi U- formata in segmento singulo: “ processum depressum 126 Rey. A. E. Eaton’s Monograph acutum, penultimum segmentorum utrinque habet. Sete flavescentes, juncturis vix obscuris.” Peo@pallidior”~ “(HS Pict.) Long. corp. ¢ ? 12, exp.al. ¢ 27, ? 31 mm. Hab.—San Ildefonso. July. Siphlurus armatus. (Forceps, Pl. VI. fig. 1, la.) S. armatus, Etn. 1870. Imago, v. s.s. 6. Tergum thoracis luteo-piceum. Ale virescenti-griseo suffusee, nervis piceis. Pedum antici picei; posteriores lutei vel furfurosi. Abdomen supra fuscum, juncturis latera versus pallidis; subtus lutescens vel ochraceum, strigis U-formatis in posteriori- bus segmentorum. Sete cervino-albide, vel subfulve, juncturis fuscis, pubescentes. Forceps piceus. Long. corp. ¢ 14-15, al. 16, set. 24-25 mm. Hab.—Killarney (M’Lach.), and Bishop’s Wood, Mid- dlesex (Wormald). In July. Mr. McLachlan has an undescribed foreign species closely allied to S. armatus, probably from Germany. Siphlurus lacustris. (Forceps maris, Pl. VI. fig. 2.) S. lacustris, Etn. 1870. Subimago, v.v.s. do. Ale cinerez vel nigricantes. Imago, v.v.s. ¢. Oculi supra saturate fuliginosi, subtus saturate virescenti-grisei. Tergum thoracis ater- rimum, politum. Al vitrine, nervis piceis, fulgore hyacinthino; apex aree marginalis et arez submargi- nalis anticee pallide virescenti-albus. Pedum antici atro- virentes, cruribus saturate corvinis ; posteriores saturate virescenti-grisel, tarsis infra spinulosis.* Abdomen supra piceo-fuscum, juncturis ochraceis ; subtus saturate vires- centi-griseum, tribus segmentorum apicalium fulvescen- tibus, singulis strigis U-formatis obscuris ; sub prioribus segmentorum strige duz, antice convergentes, obscure. Sete virescenti-grisez, bases versus fuliginose, Juncturis vix obscuris. Long. corp. é 15, al. 14,-set. 20, subim. 11 mm. Hab.—Ulyn Liydaw, Snowdon. August. * Several other species likewise have the tarsi spinulose beneath. on the Ephemeride. 127 Anglers in Wales, mistaking this for Hphemera danica, are greatly astonished at seeing the subimago rise out of the cold tranquil “llyns.” One of my specimens remained a subimago during the greater part of two days. There are some specimens of a small undescribed (probably German) species in Mr. M’Lachlan’s possession, which is very similar to S. lacustris. Siphlurus Linnceanus, nov. sp. (Forceps maris, Pl. VI. fig. 3. Notulze ventrales, fig. 3a.) Imago, v.s.s. ¢. Tergum thoracis fusco-rubiginosum. Ale vitrine, vix fusco suffuse, nervis longitudinalibus piceis, bases versus testaceis. Pedes ochracei, femoribus singulis cingulis medius obscuris. Dorsum abdominis fuscum, apicibus seementorum saturatioribus, et triangulis pallidis ad latera segmentorum intermediorum: subtus 2-8 segmentorum pallide ochracea, singula signis obscuris bicornutis punctisque atris duobus eleganter notata; cetera subtus saturate rubiginosa. Set ochro-leuce, juncturis fuscis. Long. corp. ¢ 15, set. 26, al. exp. 26 mm. Hab.—Incog. There is a specimen in the Linnean cabinet, and the abdomen of a male in Mr. Dale’s collec- tion. Siphlurus annulatus. (Forceps maris, Pl. VI. fig. 4a. Notulee ventrales, fig. 4.) Baetis annulata, Walk. 1853. Imago, v.s.s. 6. Tergum thoracis brunneo-luteum. Ale vitrine, vix lactescentes, nervis piceis: apex arez marginalis anticee nebula pallidissima fusci. Pedes ochracei, juncturis et femorum cingulis mediis piceis. Dorsum abdominis pallide fuscum, latera versus ochra- ceum: venter ochraceus, segmento singulo intermedio strigis longitudinalibus duabus punctisque tribus fuscis. Setz ochracez, juncturis piceis. Long. corp. ¢ 13, al. 15, set. 18 mm. Hab.—Trenton Falls, New York. 128 Rey. A. E. Eaton’s Monograph Siphlurus bicolor. Palingenia bicolor, Walk. 1853. Subimago, 9.v.s.s. Als fusce, nervis transversa- libus marginibus saturatioribus, lis in apice arez margi- nalis antic subrectis. Tergum thoracis luteum. Pedum antici luteo-fusci, tarsis pallidioribus ; posteriores ochra- cel. Setz lutez. Long. corp. 2 11, al. 14 mm. Hab.—St. Martin’s Falls, River Albany, Hudson’s Bay (Barnston). Siphlurus femoratus. Baetis femorata, Say, 1823; B. femorata, (?) Walsh ; vel (?) Baetis (A) interlineata, Walsh, 1863. Subimago. “ Ale $ nivez, nervis cum marginibus suis fuscis; 9 ale albicantes, nervis fuscis fusco margi- natis.” (Say.) Imago, v.s. ¢. “ Piceus. Oculi supra margaritacei, singuli macula mobili atra; subtus pallide fusci. Alee vitrine: antice tribus prioribus nervorum longitudina- lum et paucis sequentium, atque nervis transversalibus areee submarginalis cum paucis aliis bases alarum ver- sus, fuscis; macula brunnea in disco, lineaque atra in costz medio, interdum quoque areis marginalibus apices versus, obscuratis: posticee seriebus singulis brevibus nervorum transversalium fuscorum ad bases costarum brunneo nebulosis. Pedum antici pallide brunnei, inter- dum proximis dimidiorum saturatioribus; posteriores pallidiores ; omnes femoribus brunneo bi-cinctis, tibiis ad bases et apices tarsisque ad juncturas brunneis. Seg- mentorum abdominis 4-5 alba, pellucida, singula fasciis apicalibus angustis piceis, maculis dorsalibus in mediis utrinque obscuris, maculisque lateralibus pallidis ; venter albicans, pellucidus. Sete alba, annulate.” Q. ‘*Segmentorum abdominis 1-5 supra piceo-brun- nea, bases versus pallidiora. Alze posticee in toto vitrine.”’ (Walsh.) Long. corp. ¢ 12-13°5, 9 12°5-14; set. gd 20-24, 9 13-16; exp. al. g 25-28, 9 28-29 mm. Hab.—Cincinnati (Say) ; Rock Island, Illinois (Walsh). on the Bphemeride. 129 Siphlurus alternatus. Baetis alternata, Say, 1824; in sect. A, Walsh. Subimago. ‘Ale fumatz, apicibus posticarum pal- lide virescentibus.” Imago, s.s. ¢. “ Piceo-brunneus. Ale vitrine, nervis fuscis. Pedum antici pallide brunnei, coxi, cingulo pree- apicali femoris, juncturisque tarsorum, brunneis: poste- riores pallidiores. Segmentorum abdominis 2-9 vel 4-9 singula maculis trigonalibus lateralibus flavescentibus duabus supra juxta bases, plus aut minus confiuentibus ; subtus pallida, singula maculis parvis basalibus in mediis, punctis transversalibus in medis duobus, lineisque utrinque obliquis sub- abbreviatis, brunneis. Setze albi- cantes, juncturis brunneis.” @. ‘ Caput carinis divergentibus inter ocellos aronas marginibus antico et laterali verticis (vel etiam interdum carina in medio hujus), strigisque brevibus utrinque duabus, flavescentibus.” (Walsh.) Long. corp. ¢ 10°5-12°5, ¢ 10-12; set. ¢ 19-381, subim. 13; set. ? 18-19, subim. 14-15; exp. al. ¢ 23- 30, ¢ 26-32 mm. Hab.—Rock Island, Illinois, and the River Des Plaines near Chicago (Walsh) ; Washington (Hag.); St. Peter’s River (Say). Siphlurus aridus. Baetis arida, Say, 1839; in sect. B, Walsh. Subimago. “ Ale nigricante suffusee, preecipue apices versus, et nervis transversalibus fusco marginatis.” Imago. 6. “Caput pallidum, macula magné intra posteriores ocellorum orbitas utrinque atria. Thorax piceus. Ale vitrine, nervis pallidissime hyalinis, inter- dum bases costarum versus fuscescentibus. Pedum antici vel apicibus tarsorum, tibiis, et femoribus usque ad media, obscure virescenti-fuscis; vel pallide virescentibus, vix ad apices versus obfuscatis ; vel in toto fuscis vel piceis: posteriores virescenti-albi, apicibus tarsorum vix obscuris. Segmentorum abdominis 1-8 supra picea, singula maculis TRANS. ENT. soc. 1871.—ParRT I. (MARCH.) K 130 Rev. A. H. Eaton’s Monograph lateralibus trigonalibus vel semi-orbicularibus pallide rubiginosis ad bases; ultimum pallide rubigimosum. Setze virescenti-albee.” 9. Nervi alarum pallide fusci. Segmentorum ab- dominis 1-8 supra saturate rubiginosa et maculata veluti in ¢.” (Walsh.) Long. corp. 3d 8-12, ? 9-13; set. ¢ 18-23, subim. 12-14; set. ¢ 17-26, subim. 10-14; exp. al. ¢ 20-25°5, @ 23°5-32 mm. Hab.—Rock Island, Ihinois (Walsh); Indiana, about the middle of June (Say). Siphlurus siccus. Baetis (B) siccus, Walsh, 1862. Imago, ¢. ‘ Aprecedente discrepat in orbitis ocel- lorum posticorum intus haud plane obscuris; in nervis alarum fuscis ; in pedibus anticis piceis, apicibus tibia- rum atris, et proximis articulorum tarsalium pallidis (juncturis suis exceptis); in dorso abdominis piceo, im- maculato ; et in setis virescenti-albis, juncturis anguste fuscis.” ¢. ‘Tarsus anticus fuscus, proximo articulorum palido. Dorsum abdominis saturate rubiginosum, imma- culatum.” (Walsh.) Long. corp. ¢ 8°5-10, 2 85-115; set. ¢ 19, 9 15; exp. al. ¢ 19-22, @ 23-27 mm. Hab.—Rock Island, Illinois (Walsh). Siphlurus debilis. Baetis (C) debilis, Walsh, 1862; (nec Walk. 1853). Subimago. ‘ Alee fumatee, nervis fuscis.” Imago, v.s. 6. ‘Oculi supra brunnei, subtus fusci. Thorax piceus. Ale vitrine, nervis pallide hyalinis, tribus prioribus nervorum longitudinalium, bases (et in- terdum quoque apices) versus, fuscis. Pedes pallide virescentes, genubus cingulisque femorum fuscis; antici apicibus tibiarum, juncturis, et ultimis articulorum tar- salium, fuscis; posteriores apicibus articulorum tarsalium fuscis. Abdomen rubiginosum, apicibus segmentorum piceis. Sete albicantes.” on the Ephemeride. 131 2. ®Pallidior. horace flavescens. Nervi alarum costas et apices versus nigricantes.” (Walsh.) _ Long. corp. ¢ 4-5°5, 9 5-7; set. ¢ 13-14, subim. circa 5; set. 2 8-12; exp.al. ¢ 13-15, @ 15-16 mm. Hab.—Rock Island, Illinois (Walsh). At this point is resumed the series of genera which have a short ventral lamina, produced from the tip of the penultimate segment of the female; which series comprises Leptophlebia, Ephemerella, Betisca, Isonychia, Coloburus and Heptagenia.* * Species generis incerti. The following Cingalese species have been classed in Cloe by Dr. Hagen; but most likely a new genus will have to be erected for them. I have seen only one female subimago of what I suppose to be C. tristis, Hag.; and therefore I am not in a position to describe the genus. This female has hind-wings unconformable to those of Baetis, and a ventral plate produced from the apex of the penultimate segment; but no egg-valve. According to Dr. Hagen, the male has three long sete. The name Cloe cannot be retained for them. Some of them may belong to Leptophlebia. Sectio I. Ale quatuor. No. 1. Cloe tristis, Hag. 1858. Subimago 2, 8.8. ‘Nigra, pedibus Iuteis, femoribus anticis nigris ; setis griseis, incisuris nigris; alis nigris, opacis.” Long. set. 9 subim. 15, exp. al. 13 mm. Hab.—Rainbodde. (Hag.) tristis. No. 2. consueta. Cloe consueta, Hag. 1858. Subimago. ‘ Alis paulo griseis opacis.” Imago. “ Capite nigro, thorace brunneo, pedibus pallidis, abdomine pal- lido, apicibus segmentorum anguste brunneo marginatis, setis pallidis incisuris basalibus nigris ; alis vitreis (hyalinis), venis pallidis; 9 (?) tho- race medio luteo, abdomine brunneo.”’ Long. set. 2 10, exp. al. 12 mm. Hab.—Rainbodde. (Hag.) No. 3. solida, Cloe solida, Hag. 1858. Subimago (?). “Alis griseis opacis, thorace abdomineque Iuteis.” Imago 9. ‘ Fusco-enea, abdomine subtus pallido, pedibus luteis, setis eriseis incisuris nigris, alis vitrinis.” Long. set. 7, exp. al. 10 mm. Hab.—Rainbodde. (Hag.) 132 Rey. A. E. Haton’s Monograph Genus CoLopurRus. (Ala antica, Pl. IIT. fig. 3.) Palingenia, p., et Baetis p., Walk. 1853 ; Colobwrus, Htn. 1868. Imago. Oculi ¢ sub-partiti; ale quatuor; setarum media brevissima, articulata. Tarsi postici quinque-arti- culati: articulorum primus tibie adnatus, vix discretus, secundo longior; secundus in ¢ tertio equalis ; secun- dus, tertius et quartus in ¢ primo graduatim minores. Femina caret ovivalvula ; processus ventralis tamen brevis laminaris e penultimi segmentorum apice producitur. Pedes forcipis quadri-articulati; articulorum proximus largus, secundo brevior; secundus reliquis longitudine subzequalis. Ooloburus humeralis. (Genitalia maris, Pl. VI. fig. 6, 6a; feminz, 6b.) Palingenia humeralis & Baetis remota, Walk. 1853; Co- loburus humeralis, Etn. 1868. Subimago, v.s.s. 9. Ale anticz can, juxta bases ochracevz, apices versus fuscescentes, nervis transversa- libus murino marginatis, preecipue costas versus. Sete rubiginos, Juncturis obscuris. Imago, v.s.s. 3. Thorax supra fuscns, politus. Alze cano tincte, pellucide, nervis atris, juxta bases ochracee ; antica area submarginali et areze marginalis apice sub- fuscis, atque pluribus nervorum transversalium inter No. 4. Cloe signata, Hag. 1858. signata. Imago. ‘‘Capite nigro, thorace fusco-wneo, abdomine fusco, subtus basibus segmentorum pallidis; pedibus albidis, femoribus in mediis, cum genu, nigro annulatis; setis albidis, incisuris nigris.”’ Long. set. 8, exp. al. 12 mm. Hab.—Rainbodde. (Hag.) Sectio II. Alw dua. No. 5. Cloe marginalis, Hag. 1858. morginalis. Subimago. ‘ Luteo-fusca, abdomine fusco, pedibus luteis, setis griseis; alis griseis, margine costali fusco.” Imago, 9. “Nigra, pedibus anticis nigris, posticis luteis; setis albis, nigro articulatis; alis vitrinis, margine costali vix obscuriori.” Long. set. 2 16, subim. 7; exp. al. 10-14 mm. Hab.—Rainbodde. (Hag.) on the Hphemeride. 133 costam duosque nervorum sequentium fusco marginatis. Pedum antici fusci; posteriores fulvo-lutei, apicibus tibiarum et articulorum tarsalium fuscis. Abdomen supra fuscescens. @. Ale eis maris simillime, sed juxta bases lutea. Pedum antici brunneo-lutei; posteriores lutei, apicibus tibiarum ultimisque articulorum tarsalium subfuscis. long. corp. ¢ 10; 9 7-10 ;,al. ¢ 15, 9 18-17: sot. 6 20 & 2, 2 15 & 1, subim. 12-13 & 1 mm. Hab.—Otago, New Zealand. Coloburus haleuticus, nov. sp. (Forceps maris, Pl. VI. fig. 7, 7a.) Imago, v. s. s. ¢@. Thorax supra furfurosus. Alex vitrine, lacteo tinctz, juxta bases subfusce, nervis atro- piceis; apices ares marginalis et arez submarginalis virescenti-grisei1. Pedum antici rufo-picei; posteriores brunneo-lutescentes. Abdomen supra rufo-fuscum, junc- turis paulo obscuris, lineis spiracularibus testaceis, ven- tre rufo-lutescenti. Sets fuscee, pubescentes: forceps testaceus, apices versus piceo tinctus. Long. corp. ¢ 11, al. 15, set. 20 & 5 mm. Hab.—Melbourne (?) [M’Coy]. Genus Cronicus, noy. gen.* Baetis, p., Pict. 1854. Imago. Heptagenie affinis. Forcipis maris pedes quadri-articulati; articulorum penultimus longus, secundo vix brevior, primus et ultimus brevissimi. Setarum media brevissima. Cronicus anomalus. (Forceps, Pl. VI. fig. 8.) Baetis anomala, Pict. 1854. Long. corp. ¢ 10, exp. al. 20 mm. Species in electro. * Derivation.—Kpovikos, old-fashioned, out of date. 134 Rev. A. E. Eaton’s Monograph Whether the Baetis gigantea, grossa, and longipes of MM. Pictet and Hagen (1856) belong to this genus or not, I am unable to say, because they are not figured, and I have not seen the types. Genus IsonycHIA, nov. gen. (Ala antica, Pl. IIT. fig. 4.) Baetis, p., Walk. 1853. Imago, ¢. Ale quatuor: setarum media sepissime rejicitur, interdum tamen rudimentum brevissimum re- tinetur. Tarsi quinque-articulati; articulorum posterio- rum primus secundo subzequalis, et tertius etiam quarto subeequalis, sed secundus tertio paulo longior: ungues uncinati, conformes. Ovivalvula caret; sed processus laminaris ventralis e penultimi segmentorum apice pro- ducitur. Oculi ¢ integri. Forsan ad Isonychiam species Siphluri in Baetis serie B (Walsh), et Hphemera pudica (Hag.), pertinere inveniantur. Isonychia manca, nov. sp. (Genitalia, Pl. VI. fig. 5, 5a.) Subimago, d ¢.v.s.s. Ale nigricantes, venis sa- turate et anguste marginatis; post-costas versus palli- diores. Imago, v.s.s. @. Thoracis tergum luteo-furfurosum. Ale vix lurido tinct, nervis vix luridis. Pedum antici femoribus olivaceo-piceis, apicibus saturate piceis, tibiis atro-piceis, tarsis testaceis juncturis atris; posteriores stramineo-gambosi, unguibus vix obscuris. Abdomen decoloratum. Setee pallidissime ochracez, proximis juncturarum obscuris. @. Thoracis tergum et caput furfurosa, apud latera interdum fusco-picea. Alee vitrinee, vix lacteo vel lurido tinctz ; nervorum longitudinales picei, transversales atri. Pedum antici apicibus femorum piceis, tibiis atris, duobus proximis articulorum tarsalium albicantibus, ceteris nigricantibus ; posteriores ochracei, unguibus obscuris. Abdomen rufo-piceum, setis cretaceis, breviter pubescen- tibus. Interdum pedes antici sunt picei, tarsis murinis. Long. corp. ¢ 10, ¢ 7-12, al. 3 10; -9 11°5-13; set. 6 18, ¢ 20-22 mm. Hab.—Texas (M’Lach.). on the Hphemeride. 135 Isonychia ignota. (Genitalia maris, Pl. VI. fig. 29.) Baetis ignota, Walk. 1853. Imago, v.s.s. ¢. Thoracis tergum brunneo-piceum. Alz vitrine, nervis testaceis. Pedum antici fusco-picei, Juncturis pallidis ; posteriores lurido-straminei. Abdomen supra piceum, apicibus seementorum obscuris: “ venter rubiginosus” (Walk.). Sets bases versus sub-fuligi- nose. Long..corp. ¢ 10:5, al. 12 mm. Hab.—Incog. (? United States.) Genus HeEpraGenia. (Ala antica, Pl. III. fig. 5.) Ephemera, p., Pod. 1761; Baetis (A), Curt. 1834 (nec Leach, 1815) ; Heptagenia, Walsh, 1863 ; Hedyurus, Etn. 1868. Nympha agile reptans, laminis branchialibus utrinque septem ; laminz simplices integree, fasciculis e radicibus singulis filamentorum branchialium. Femora late com- pressa, ciliata. Caput late depressum: labrum induplica- tum, transversum, obtuse triangulare, apice emarginato. Palpi maxillares bi-articulati: maxillarum superiores lami- nares, intus ciliate, antice (7. e., apud apices) pectinatz, palpis tenuibus ; inferiores palpis robustis ultimis arti- culorum bifidis, dimidiis imbricatis. Labium ovale mi- nutum, palpis inarticulatis, brevissimis, ob-ovatis. Subimago in habitfi Siphlwro admodum similis est. Imago. Alz quatuor: setaruam media caret: oculi maris simplices. Tarsorum posteriores quinque-articulati ; articulorum secundus, tertius, et quartus graduatim de- crescentes: ungues dissimiles. TF orcipis maris artus tri- articulati, proximis articulorum longissimis, ex apice pro- cessus Ventralis procedentes. Ovivalvulam et processum ventralem penultimi segmentorum femina habet. The species frequent streams and rivers in the Pale- arctic and Nearctic regions, the Andes, and the Malay Archipelago. 136 Rev. A. E. Eaton’s Monograph Heptagenia semicolorata. (Genitalia maris, Pl. VI. fig. 9.) Ephemera stigma (?), Gmel. 1790-38. 2. fuscula (?), Schr. 1798 (subim.). Baetis semicolorata, Curt. 1834. B, semitincta (?), Pict. 1843-5.* Subimago, v. v.s. Ale antice grises ; postice pal- lide cervinze vel fumatee. Pedes virescenti-grisei, femor- ibus in mediis obscure punctatis, tarsisque corvinis vel atro-virescentibus. Setee nigricantes. Oculi maris satu- rate olivacei, cingulis atris in medis. Imago, v. v.s. &. Oculisupra saturate picei, cingulis subtus atris marginibus cerulescenti-griseis. Tergum thoracis fusco-luteum. Ale vitrine, nervis et basibus rubiginosis. Pedes virescenti- grisei, strigis abbreviatis longitudinalibus in mediis femorum, cruribus anticis nigricantibus, sed posterioribus tarsorum vel ochraceo- fumosis, vel stramineis plus aut minus corvino tinctis, vel fulvis unguibus obscuris. Abdomen supra fuscum, apicibus segmentorum obscuris et juncturis pallidis; subtus saturate murinum. Setze fuliginose, vel nigri- cantes. 2 . Alee vitrine, crassioribus nervorum longitudinalium testaceis, tenuioribus atro-fuscis, et transversalibus atris ; vel omnibus testaceis. Oculi atro-olivacei. Abdomen supra ochraceo-furfurosum, juncturis pallidissimis ; subtus testaceum. Processus ventralis penultimi segmentorum emarginatus. Long. corp. ¢ 7°5-10, 9 7°5-9; al. g 10, 2 10°5; set. ¢ 23-25, subim. 8-9; set. 2? 14, subim. 10 mm. Hab.—Great Britain, Switzerland, and Austria; in cold streams and the rapids of rivers. June to September. * The specimens labelled semitincta in M. Ed. Pictet’s collection, are indistinguishable from a pale variety of semicolorata, which occurs in the Lake District of England. It seems advisable, notwithstanding, to state M. Pictet’s criteria of semitincta, in case the species should be really distinct from one another. Subimago. ‘Ale pallide flavescenti-grisee. Corpus virescenti- fla- vescens.”’ Imago. ‘ Thorax striga dorsali pallida. Femora antica acute fulva.”’ Hab.—A small stream at Versoix, on the Lake of Geneva, in the middle of June. (Pict.) One can hardly doubt that it is a species distinct from semicolorata. on the Hphemeride. 137 Heptagenia nivata, nov. sp. (Genitalia maris, Pl. VI. fig. 10.) Subimago, v. v. s. ¢ ¢. Alarum antice saturate cinerez ; posteriores pallidiores. Pedes olivacei, tarsis nigricantibus ; antici obscuratiores. Sete nigra. Imago, v. v. s. ¢. Oculi atro-fuliginei, infra paulo olivaceo tincti. Tergum thoracis aterrimum, politum. Ale vitrine, invariz ; nervi virescenti-grisei, post-cubi- tales recti. Pedum antici atro-olivacei, tibiis et tarsis atris; posteriores olivacei, tibiis saturate virescenti-albis vel cretaceis, atque tarsis olivaceo tinctis. Abdomen supra fuscum, juncturis paulo pallidioribus ; subtus oliva- ceum. Sete nigricantes, juncturis anguste obscuris. 9. Post-cubitales vix irregulares. Pedum antici tibiis tarsisque saturate nigricantibus ; posteriores tibiis creta- ceis, et tarsis nigricantibus unguibus pallidis. Abdomen subtus olivaceum, maculis ganghalibus paulo obscura- tioribus. Lamina ventralis penultimi segmentorum apice lente emarginato. Hone! corp. (Gi 2 11; al...¢) 12, 9. 17+ set., gd 27, subim. 8; set. ? 12-15 mm. Hab.—The stream at Barberine; and Lac de Combal. July. It is named nivata from its haunts being chilled with snow. Heptagenia borealis, nov. sp. (Genitalia maris, Pl. VI. fig. 11.) Imago, v.s.s. 6. Thoracis tergum piceum. Ale vitrine ; nervorum longitudinales pallide fusci. Pedes pallide fusci. Abdomen ochraceum, pellucidum; supra apicibus et paucis segmentorum apicalium fuscis. Setze cervine, juncturis fuscis. Long. corp. & al. g 10 mm. Hab.—Finmark, between Kautokeino and Karaswando. (Walk. MS.) July or August.* * An account of Messrs. Walker and Christy’s journey is given in the Entomological Magazine (1837) iv. 462-83. 138 Rev. A. E. Eaton’s Monograph Heptagenia canadensis. (Genitalia maris, Pl. VI. fig. 12, 12a.) Baetis canadensis, Walk. 1853. Imago, v. s. ss 6. Thorax supra saturate luteus. Ale vitrine, nervis fuscis ; ares marginalis et submar- ginalis vix fuscescentes, nebuli apicali breviter apud marginem terminalem producti, et duobus nervorum transversalium prope punctum nodale nebulis singulis rotundatis obscuris, nebulis interdum tamen confluenti- bus. Pedes pallide testacei, juncturis tarsorum fuscis, apicibus tibiarum atris, et femoribus obscure bicingulatis. Abdomen supra sub-ochraceum, apicibus segmentorum strigisque lateralibus obliquis fuscis ; subtus stramineum. Setze pallidee, juncturis fuscis. Long. corp. ¢ 9, al. 10, set. supra 18 mm. Hab.—Canada. Heptagenia fusca. (Genitalia maris, Pl. VI. fig. 18, 13a, b.) Baetis fusca, Walk. 1853. Imago, v. s. s. ¢ 2. Tergum thoracis castaneo- piceum. Alee vitrine, nervis pallide fuscis, et apice area marginalis anticee vix fuscescente. Pedum antici fusci: posteriores saturate testacei: femora strigis singulis bre- vibus in mediis longitudinalibus atris. Abdomen fuscum, apicibus segmentorum saturatioribus. Long. corp. ¢ ¢ 6-7, al. 9-10 mm. Hab.—St. Martin’s Falls, Albany R., Hudson’s Bay. Heptagenia cupulata, nov. sp. (Genitalia maris, Pl. VI. fig. 14, 14a.) Subimago, v.s.s. Ale testacez, nervis fuscis. Imago, v. s. s. 6. Thoracis tergum luteum. Ale vitrine : antice areis marginalibus et submarginalibus apices versus fuscescentibus, longitudinalibus nervorum piceis et transversalibus atris, (basi subcoste et nervo transversali crasso juxta basin arez marginalis aurantiacis on the Hphemeride. 139 exceptis); posticaze nervis bases versus testaceis, et apud margines terminales anguste corvimo tincte. Pedes saturatissime lutei. Abdomen supra furfurosum, strigd longitudinali media, apicibus segmentorum, strigisque lateralibus obliquis, fuliginosis, Sete saturate hepati- coloratz. ? ovivalvuli acuta, processuque ventrali penultimi segmentorum integro, sinu longitudinali. Long. corp. ¢ 18, ? 16, set. g 48, 9 54mm. Hab.—Northern China. The neuration of the fore-wing is peculiar. Heptagenia basalis. (Genitalia maris, Pl. VI. fig. 15, 15a.) Baetis basalis, Walk. 1853; nec Steph. MS. Imago, v. s. s. o&. Tergum thoracis piceum. Alex vitrex, nervis piceis: anticee vix fusco tincte marginem interiorem versus, nervis transversalibus in areis margi- nalibus et submarginalibus plus aut minus obscure mar- ginatis, marginibus nonnunquam confluentibus, itaque maculam formantibus ad punctum nodale alteramque inter hoc et alze apicem ; posteriores bases versus vix fusco-piceo tincte. (Exemplar pedibus caret). Abdomen piceum, juncturis pallidis. Sete cervine, juncturis fuscis. Long. corp. ¢ 15, al. 18, set. 21 mm. Hab.—Lake Winnipeg. Heptagenia maculipennis. H. maculipennis, Walsh, 1863. Subimago. ‘ Ale griseo tinct, nervis transversalibus obscure marginatis.” Imago. 6. “ Pallide flavicans. Capitis vertex rubi- ginosus; orbite ocellorum grisez. ‘'Tergum thoracis ru- biginosum. Ale vitrine, nervis longitudinalibus tenui- bus obscuris, et pluribus transversalium atris: horum ii super interiorem submarginem ale antic, atque omnes ale posticz, vitrei sunt. Nervi transversales anthracini in area marginali ale antic adeo collocantur ut quasi maculas forment; viz., nervi circa quatuor prope basin, 140 Rev. A. E. Eaton’s Monograph quorum primus aream submarginalem quoque transit, marginibus late anthracinis; deinde spatium; postea tres ad punctum nodale, paucis sequentibus; deinde circa medium spatii sequentis alii quatuor vel quinque ; denique nervi ad spatia solita positi usque ad apicem. Pedes albicantes, femoribus flavescentibus, seepissime strigis tenuibus singulis brevibus subtus apices; ungues apices que tibiarum anticarum fusci. Dorsum abdominis apicem versus piceum ; sete forcepsque albidee.” 9. Pallidior. Abdominis segmenta apicalia supra albicantia, plus aut minus rubiginoso tincta. In pos- terioribus tarsorum primus articulorum tarsalium se- cundo equalis: tibia antica apice fere nunquam fusco. Macule costales alee anticze eis maris paulo pallidiores” (Walsh). Penultimi segmentorum processus ventralis integer esse mihi videtur. Long. corp. ¢ 4°5-6, ? 5-6; set. g 12-15, subim. 7°5; set. 9 9-12, subim. 8; exp.al. ¢ 14-17, ? 15-17 mm. Hab.—Rock Island, Illinois (Walsh); New York (M’ Lach. Mus.). Heptagenia cruentata. H. cruentata, Walsh, 1863. Subimago. “ Alze opace flavescentes. Seta nigricantes (vel grisez ?), Juncturis vix fuscis.” Imago, v. s. 6. Flavescens. Oculi cerulescenti- grisei, lineis singulis atris intersectis. Tergum thoracis sanguineum. Ale vitrine, nervis fuscis, bases versus vitreis, costisque in majore parte flavescentibus ; sub- costa apud punctum nodale incrassata atque obfuscata. Femorum dimidia apicalia annulis confluentibus pallide sanguineis bicincta; tibiae quoque bases et apices versus pallide sanguinez ; tarsorum juncture atque ungues ob- scuri. Abdomen supra sanguineum, juncturis satura- tioribus. Forceps pallidus, apicibus fuscis. Setz albide, juncturis in vices anguste lateque obscuris.” ?. © Plerumque mari pallidior. Venter interdum sanguineus.” (Walsh.) Long. corp. ¢ 7-8, 2 8-9; set. g 25-27, subim. 12- 15; set. ¢ 17-20; exp.al. g 19-20, 9 22-23°5 mm. Hab.—Rock Island, Ilinois (Walsh). on the Ephemeride. 141 Heptagenia simplew. H., simplex, Walsh, 1863. Subimago, ‘ Ale flavescentes; costa feminz unius fusca.” Imago, vy.s. 3. ‘ Ab acute flavo ad albidum varians. Oculi virescenti-sulphurei ; orbitee ocellorum nigricantes. Tergum thoracis carneum. Ale vitrine, nervis apicali- bus, et interdum quoque eis in areis marginalibus, fuscis. Pedes albi, femoribus flavis vel cretaceis, apicibusque tarsorum fuscis: antici apicibus tibiarum atque inter- dum juncturis tarsorum fuscis, Abdomen vitreum, seg- mentis apicalibus (2-3) flavescentibus vel albidis. Setw albz, nigricantes apices versus. Forceps albus.” 2. “Abdomen flavum, nisi vacuum sit, setis albis. Pedes apicibus tarsorum solum fuscescentibus. Nervi alarum anticarum vitrei, costis subcostisque flavescenti- bus, paucisque nervorum transversalium inter horum apices obscuris, exceptis.” (Walsh.) Long. corp. ¢ 6-8, 2? 6°5-9; set. g 14-18°5, subim. 10°5; set. ¢ 14-16, subim. 10-15; exp. al. g 16-20°5, @ 19-25°5 mm. Hab.—Rock Island, Illinois (Walsh). Heptagenia pulchella. Palingenia (C) pulchella, Walsh, 1862. (?) Pal. (C) terminata, Walsh, 1862.* Subimago. “ Ale sub-opace, fusco nebulose, nervis transversalibus fuscis, obscure marginatis. Sete vix . . . . 4 pilose, nisi juxta bases.” Imago, v.s. 6 “ Oculi margaritacei, vel atrescentes. Thoracis tergum rubigineo-piceum, meso- et meta-tho- racis scutellis albidis. Ale vitrese: antics areis margi- nalibus apices versus pallide brunneo nebulosis, et nervis transversalibus fuscis, eis prope basin arew marginalis lutescentibus exceptis ; posticee pluribus nervorum pel- lucidis. Pedum antici pallide flavescentes, femoribus fusco bicinctis, apicibus tibiarum tarsorumque cum junc- * Utrum H. terminata sit varietas H. pulchelle, an species vera, Domi- nus Walsh dubitat. In H. terminata sex priora segmentorum abdominis immaculata, pedumque posteriores pallide flavescentes sunt. Forsan quoque oculi maris flavescentes fuerint. 142 Rey. A. HE. Eaton’s Monograph turis horum fuscis; posteriores albidi, similiterque sig- nati. Segmentorum abdominis 1-6 albida, punctis sin- gulis lateralibus prope apices magnis fuscis; cetera rubiginoso-picea: venter albicans. Set fuscee, pallidi- ores apices versus.” 9. ‘Vertex capitis et tergum thoracis albicantes: ille luteo, hoc vel luteo vel rubiginoso variat. Abdomen flavum, maculis veluti in mari.” (Walsh.) Long. corp. ¢ 5-8, ? 5°5-8; set. ¢ 17-21, subim. 10-13; set. 9 15-16, subim. 8-13; exp. al. ¢ 15-21, 9 17-23 mm. Hab.—Rock Island, Illinois (Walsh). Heptagenia interpunctata. Baetis interpunctata, Say, 1839 ; Palingenia (C) inter- punctata, Walsh, 1862. Subimago. ‘ Ale primo flavescenti tinct; denique fuscee, opacee.”” Imago, v. s. 6. “Flavescens. Oculi pallide vires- centi-sulphurei ; macula atra inter oculos, alteraque infra antennas; orbite ocellorum fusce. Tergum thoracis piceum, triangula basali lineisque singulis lateralibus prothoracis atris. Alz vitrine; antice prope costas, preecipue apices versus, lutescenti-brunneo nebulosz; in medio ale, inter tertium atque quartum nervorum longi- tudinalium, striga brevis crassa atra jacet; nervi fusci, costa in majore parte flavescenti excepta: posticee apud apices brunnez. Pedum antici pallide virescenti-flavi (sulphurei?), femoribus fusco bicinctis, apicibus junc- turisque tibiarum et tarsorum quoque fuscis; posteriores pallidiores. Abdomen pallide opace viridescens, striga dorsali et dimidiis apicalibus segmentorum piceis ; subtus apicibus segmentorum obscuris. Sete pallid, vires- centes, juncturis fuscis.”’ 9. “Tergum thoracis luteum, plerumque puncto tantum super prothoracem nigro. Abdomen supra flavum, notis angustioribus, et subtus notis ¢ pallidiori- bus. Sete albidee. Alze anticze apud costas flavescentes, nervis transversalibus e postcosta (sicut nervi alarum posticarum) pellucidis et flavescentibus ” (Walsh). on the Ephemeride. 143 Long. corp. ¢ 7-10, ¢ 5-10; set. gd 20-25, subim. 9-15; set. 2 14-24, subim. 7-14; exp.al. ¢ 17-25, 9 18°5-30 mm. Hab.—Rock Island, Illinois (Walsh) ; Indiana (Say). Heptagenia flavescens. (Genitalia maris, Pl. VI. fig. 16.) Palingenia (C) flavescens, Walsh, 1862. Subimago. <6. “ Ale vel subfuscescentes, colore ner- vorum indistinctiori quam in imagine; vel subflaves- centes, sub-opace, nervis flavescentibus, transversalibus in mediis apicesque versus exceptis. Segmentorum ab- dominis sex priora flava, strigis carentia. Setee invariz.” Imago, v. s. s. ¢. Thoracis tergum luteum, vel “rubiginosum vel piceum.” Alze vitrine, fulgore lacteo ; nervi picei, costis et subcostis majore parte flavescenti- bus exceptis ; punctum nodale indistinctum; arez mar- ginalis apex virescenti-griseo vel “ pallide rubiginoso” nebulosus. Pedum- antici sub-gambosi, vel “ pallide rubiginosi,’” femoribus bicinctis, apicibus juncturisque tibiarum et tarsorum fuscis; posteriores testacei, ‘ apici- bus femorum” juncturisque tarsorum obscuris. Abdo- men supra rufo-fuscum vel “rubigimosum,” juncturis obscuris ; sex priora segmentorum strigis pallidis duabus sub-distinctis, catera lutescentia: subtus testaceum, apicem versus lutescens. Sete albicantes, juncturis fuscis. ‘ Venter in v.s. pallide virescens, apice excepto.” 2. © Pallidior, abdomine supra pallide fusco vel rubi- ginoso, carens vittis. Plurimi nervorum transversalium arez marginalis pellucidi.” (Walsh.) Long. corp. ¢ 9-13, @ 10-13; set. d 2 27-38, subim. 3 17, 9 13; exp.al. ¢ 24-29, 9 27-34 mm. Hab.—Rock Island, Illinois (Walsh) .* * Heptagenia vitrea. Palingenia vitrea, Walk. 1853. Subimago, vy. s.s. @. ‘*Testacea; femora fusco sub-notata; ale al- bidx, sub-opace, nervis testaceis ’’ (Walker). Long. corp. 6, exp. al. 12 mm. Hab.—St. Martin’s Falls, Albany River, Hudson’s Bay. This species can be recognized in no other way, than by comparing specimens with the original type in the British Museum. 144 Rev. A. E. Eaton’s Monograph Heptagenia nigrimana. Ephemera nigrimana, Duf, 1841. Imago, v. s. ¢&. ‘Subtestacea, oculis fusco-eeneis flavo circumdatis; alis diaphanis, costa subflavescenti, venis obscuris: abdomine testaceo, segmentis utrinque lineola obscura obliqua; pedibus pallidis, anticis nigris ; setis nigris.” (Duf.) Long. corp. 5 lin. Gallic. Hab.—Incog.; probably France. Heptagenia flavipennis. (Genitalia ¢@ 5 Pl. Vio fig. 17, vas 72 7 bees) Ephemera flavipennis, Duf. 1841. Baetis cerea, Pict. 1843-5. B. longicauda, Hag. 1863; (nec Steph. 1835-6). Subimago, v. v. s. 6. Oculi graminei. Ale acute virescenti-flavee, marginibus terminalibus viridi-nigri- canti anguste limbatis, atque strigis transversalibus dua- bus interdum abruptis anticarum apices versus ejusdem coloris; puncta nodalia costa subcosteeque, atque nervi transversales in areze marginalis apice, atri. Pedes fur- furosi, femoribus obscure carneo bicinctis, et tarsis apicibusque tibiarum anticarum corvinis. Sete furfu- rose, juncturis vix obscuris. @. Caput macula trigonali utrique apud oculos supra et infra obscura. Imago, v. v. s. ¢. Oculi flavo-prasini, vel viridi- olivacei. Thoracis tergum furfurosum. Al vitrine, flavo-virenti suffusee, preecipue costas versus ; nervorum longitudinales saturate virentes, transversales punctaque nodalia atri. Pedes veluti in subimagine; tarsi antici tamen brunneo-fuliginosi, apicibus articulorum obscuris. Abdomen supra vel virescenti-griseum, vel flavo-virens, vel sulphureum, apicibus segmentorum anguste corvinis, atque tribus segmentorum apicalium furfurosis; subtus immaculatum. Setz lutew, juncturis obscuris. @?. Pallidior. Ale anticz vitrine, fulgore pruinoso, areis marginalibus et submarginalibus virescenti-griseo tinctis. Abdomen supra pallidissime virescenti-flavum, apicibus segmentorum anguste corvinis. Ovivalvula processusque ventralis penultimi segmentorum integri. Se —— on the Ephemeride. 145 Long. corp. ¢ 12-13, 9 14; al. gd 14-15, 2 17; set. 6 20-33, subim. 24, 2? 21 mm. Hab.—The Kennet and Holybrook, near Reading ; and the Lake of Geneva (Pict.). June and July. The sub- imago rises mostly in the evening after sunset. Heptagenia elegans. (Genitalia g, Pl. VI. fig. 18; 2 18a, b.) (?) Ephemera sulphurea, Mil. 1776= EL. helvola, Sulz. 1776=H. bioculata, Rom. 1789 (nec Lin.). (?) H. ferru- ginea, Gmel. 1790-3. FH. bioculata, var. (7), Pz. 1804 (nec lin.). Baetis elegans, costalis & straminea, Curt. 1834. H. lutea, Ste. 1835-6 (nec Lin.). (7?) B. marginalis, Burm. 1839. B. cyanops & (¢) sulphurea, Pict. 1843-5. B. lu- tea, Hag. 1863. Subimago, v. v.s. Oculi saturate olivacei, vel gra- minei; caput maculé parva utrinque infra oculos atra, at- que alia rhombica supra juxta oculos lutea. Lineola pone coxas anticas, et punctum ante poneque coxas interme- dias utrinque, atra. Ale primo unicolores, sulphuree ; tum striga transversalis vix distincta nascitur apud an- gulum interno-terminalem ale antic, alteraque inter hance et ale apicem, atque limbus griseus mediocris super marginem terminalem; denique nervi transversales atri fiunt. Pedes pallidissime ochracei, tarsis pallide nigri- cantibus. Sete nigricantes. Imago, v.v.s. o. Oculi supra saturate virescenti- cesii, et subtus subgraminei, maculis singulis rotundis mobilibus lineolis curvatis concentricis circumjectis ; vel atri. Caput maculatum veluti in subimagine. ‘Thoracis tergum furfurosum. Ale vitrine, fulgore pruinoso, nervis plerumque corvinis vel atris ; antice areis margi- nalibus et submarginalibus flavicantibus, apicibus vires- centi-griseo tinctis. Pedes parum gambosi, vel flavo- virescentes; antici furfuroso tincti, tarsis fumatis, et juncturis tarsorum apicibusque femorum atris; posteri- ores apicibus tibiarum et tarsis fumatis, juncturis atris. Segmentorum abdominis sex priora supra pallide fusces- centia, vel virescenti-olivacea, juncturis atro-piceis, sepe TRANS. ENT. soc. 1871.—ParT 1. (MARCH.) L 146 Rey. A. EH. Eaton’s Monograph vasi dorsali, lineisque curvatis ex basi cujusque duabus, indistincte pallidioribus, atque lateribus ventreque palli- dissime olivaceis; caetera supra furfurosa, subtus ochracea. Sete albo-fumatze, juncturis fuscis. ?. Oculi prasini, vel glauci, vel etiam atri. Ale vitrinee, parum sulphureo vel gamboso tinctve apud areas marginales et submarginales, nisi in toto vix sulphuree ; nervis atris, crassioribus longitudinalium gambosis ex- ceptis. Pedes gambosi, tarsis fumatis, juncturis atris. Dorsum abdominis flavo-virens vel flavo-ochraceum, junc- turis obscuris, et tribus segmentorum apicalium flavis vel ochraceis ; venter immaculatus. Setz albz, vel fumato- albee, juncturis obscuris. Ovivalvula obtusa; processus ventralis penultimi segmentorum paulo retusus. Long. corp. ¢ 9-10, 2 9-11; al. ¢ 10-12, 29 11-13; set. ¢ 19-23, 2 14-19, subim. ¢ & 2? 13-15 mm. Hab.—Switzerland, Germany, Belgium, Great Britain, and Norway (Hammerfest). May to September; in streams and rivers. Heptagenia fluminum. Ephemera bioculata, Pz. 1804 (nee Lin.). Baetis flu- minum, Pict. 1845-5. Subimago (e figura Pict.). ¢. “ Ale cervine; an- terior striga transversali abbreviata ex angulo interno- terminali, alteraque paulo postea e costa, deide lineis transversalibus e costa tribus apicem versus, atque nebula transversali inter strigas et basin, atrescentibus.” Q. “ Ales virescenti-grisez, invarie.” Imago, ¢. ‘ Oculicyanei (Pict.) vel graminei (Lab. & Imh.). Thoracis tergum lutescens vel saturate furfu- rosum. Ale vitrine, nervis tenuibus atris, et areis marginalibus anticarum flavescenti tinctis. Pedes lutes- centes, tarsis fuscescentibus. Abdomen lutescens, apici- bus segmentorum et maculis trigonalibus latero-apicalibus fuscis. Sete lutescentes vel furfurose, juncturis pallide fuscis.” 2. “Simillima mari; abdominis segmenta singula lineolis dorsalibus abbreviatis atris in mediis longitudi- nalibus.” on the Hphemeride. 147 Long. corp. ¢ 12-13, 9 12; set. ¢ 30, subim. 13, ? 20, subim. 13; exp. al. ¢ 25-27, 9 30 mm. Hab.—Germany (Panzer) ; the Rhone about Geneva, to the further extremity of the Lake. (Pict.) Heptagenia sylvicola. Baetis sylvicola, Ed. Pict. 1865. Imago, y.s.s. ¢. “ Tergum thoracis luteum, meta- thorace flavescenti. Als vitrine, nervis lutescentibus ; apex ares marginalis flavescens. Pedes lutei; antici nigricantes. Abdomen luteum, juncturis nigricantibus, ultimoque segmentorum flavo. Seta fulvae a, Juncturis nigri- cantibus. Forceps nigricans.” (Hd. Pict.) Venter serie macularum trigonalium, quarum apices ante diriguntur. 9. “Simillima mari. Processus ventralis penultimi segmentorum abdominis integer.” (Ed. Pict. & e fig.) Long. corp. ¢ 12, 2 18; exp.al. ¢d 31, 9 33 mm. Hab.—San Ildefonso, in July (Ed. Pict.). Heptagenia volitans. (Genitalia maris, Pl. VI. fig. 20.) H. volitans, Ktn. 1870. Imago, v. v. s. 3. Oculi supra fusco-picei, subtus testacel. Thoracis tergum atro-fuscum. Ale vitrine, nervis atris, tribus prioribus longitudinalium nigricanti- bus exceptis; apex are marginalis Vix virescenti-griseo tinctus. Pedum antici tibiis tarsisque fuscis, et femoribus obscure bicinctis; posteriores fumato-luridi, femoribus saturate carneo bicinctis, tarsis fuscis, et interdum tibiis testaceis. Abdomen supra fuscum, apicibus segmentorum fuliginoso-fuscis, maculisque trigonalibus lateralibus satu- rate virescenti-griseis : subtus satur ate virescenti- -griseum ; immaculatum, vel perraro locis plexoram nervorum stri- gisque sequentibus duabus vix obscure indicatis ; inter- dum quoque infra penultimum segmentorum note L-for- matz duz fusce sunt. Sete pallide virescenti-grisex, juncturis atris vel atro-fuscis. Long. corp. g¢ 12-15; al. 13-14; set. 25-28 mm. Hab.—The Thames above Pangbourne, and the Holy- brook near Reading; in May. ‘The name has reference to a habit ot the Heptagenie of hovering steadily when there is a gentle breeze. L2 148 Rey. A. E. Eaton’s Monograph Heptagenia alpicola, nov. sp. (Genitalia maris, Pl. VI. fig. 19.) Imago, v.v.s. 6. Oculi fuliginosi. Thoracis tergum fusco-luteum. Al vitrine, nervis piceis, interdum are marginalis apice nigricante. Pedes rufo-picei: antici tarsis corvinis, vel tibiis et tarsis atris ; posteriores tarsis paulo obscuratis, vel saturate piceis. Abdomen supra luteum vel saturate griseum, marginibus latis segment- orum apicalibus, strigaque in medio longitudinali, sub- fuscis vel fuscis. Venter pallidus, striga longitudinali angulatim in medio segmenti singuli dilatata subfusca ; segmentorum penultimum luteum. Setz fuliginosz. Forceps fumatus, proximis articulorum fuliginosis. Long. corp. g 13-14; al. 15-16; set. 41-44 mm. Hab.—Near Contamines, Val Montjoie; Carinthia. Heptagenia iridana. (?) Baetis aurantiaca, Burm. 1839.* B. iridana, Kolen. 1860. Imago. “ Corpore rufo-brunneo, segmentis abdominis dorsalibus postice late brunneo marginatis ; alis iridinis, tribus nervorum anteriorum flavis, reliquis brunneis, pterostigmate [%. ¢., apice areee marginalis | infuwmato vel flavescenti. Venter luteo-brunneus, setis obscurior.” (Kolen.) Long. corp. 3°5; al. 5; set. 12.” Hab.—Altwater, in August and September, at an alti- tude of 4000 feet. The type is in the Royal Polytechnic, Brunn. Heptagenia annulifera. Palingenia annulifera, Walk. 1860. Imago, v.s.s. 9. Thorax furfurosus, lateribus pro- et meta-thoracis dorsi pallidioribus. Ale vitrinz, nervis * Burmeister’s diagnosis of B. aurantiaca is as follows:— Imago. ‘“‘Rufo-testacea, segmentis abdominalibus utrinque linea obli- qua nigra; alis gracilibus hyalinis.”’ Long. corp. 3°5 lin. Hab.—Halle. on the Ephemeride. 149 piceis, et horum transversalibus fusco marginatis. ‘‘ Pedes albidi, [femoribus ] nigro-fasciatis.” Abdomen testaceum, strigis singulis trigonalibus obliquis utrinque segment- orum, punctisque dorsalibus atris. Sete cervine, junc- turis atris. Processus ventralis penultimi segmentorum integer. Long. corp. ? 6; al. 8; set. supra 10 mm. Hab.—Hindostan. Heptagenia luridipennis. (Genitalia maris, Pl. VI. fig. 21, 21a.) (?) Ephemera noveboracana, Licht. 1796. Baetis lwridi- pennis, Burm. 1839. (?) B. noveboracana, Hag. 1861. Subimago, v.s.s. Ale pallide fusco tincte, nervis obscuris. Imago, v.s.s. ¢. Thoracis tergum brunneo-luteum ; abdomen paulo obscurius. Ale vitrine, crassioribus nervorum longitudinalium brunneis vel testaceis, et transversalibus piceis ; apices arez marginalis et ares submarginalis paulo infuscati. Pedum antici sub-testacei vel gambosi, femoribus obscure bicinctis, apicibus tibia- rum fuscis, et tarsis pallidis; posteriores pallidiores. Abdomen supra brunneo-luteum, vel fuscum, apicibus segmentorum strigisque lateralibus obliquis obscuris. Setz pallidissime cervine, juncturis obscuris. 9. Simillima mari. Venter immaculatus. Processus ventralis penultimi segmentorum emarginatus esse videtur. . ona." corp. 6 11,°2 103-al. ¢ 13, 9 15; ‘set. dg circa 25, ? subim. circa 15 mm. Hab.—St. Martin’s Falls, Albany River, Hudson’s Bay (Barnston); the St. Lawrence, Canada (De Selys). Heptagenia flaveola. (Genitalia maris, Pl. VI. fig. 22, 22a.) Baetis jflaveola, Pict. 1843-5. Subimago, v.s.s. Alee cervino-albz; nervorum longi- tudinales testacei, transversales in mari nigricantes, in femina atri. 150 Rey. A. E. Eaton’s Monograph Imago, v. s. s. ¢. Thoracis tergum rufo-luteum. Alee vitrine ; anticze nervis atris, tribus prioribus longi- tudinalium testaceis exceptis ; posticee nervis pellucidis. Pedes lividi vel straminei, femoribus fusco bicinctis, juncturisque obscuris ; tarsi antici albicantes, juncturis obscuris. Abdomen tribus segmentorum apicalium rufo- luteis, et ceteris ochroleucis juncturis fuscis ; venter immaculatus. Sets albo-cervine, juncturis vix obscuris. @. Corpus ochraceum, juncturis abdominalibus an- guste nigricantibus. Processus ventralis penultimi seg- mentorum vix emarginatus. Al fulgore fere talcoso. Long. corp. ¢ 9, ? 8-10; al. ¢ 10, ? 11-18; set. 3 20, 2 subim. 16 mm. Hab.—St. Martin’s Falls (Barnston); Tennessee (Poep- pig) ; West Farms, New York (Angus, MS.). Heptagenia vicaria. (Genitalia maris, Pl. VI. fig. 23, 23a.) Baetis vicaria, Walk. 1853 (imago). (?) B. tessellata, Walk. 1853 (subimago, ¢ ).* Subimago ? (tessellata, Walk.),v. s. s. Ale pallidis- sime fusco suffuse, nervis testaceo-brunneis, et horum transversalibus fuliginoso marginatis. Imago, v.s.s. ¢. Thoracis tergum brunneo-luteum. Ale vitrine, nervis fuscescentibus ; apex arez marginalis antice pallidissime fuscescente vel virescenti- griseo tinctus. Abdomen supra pallide fuscum: dorsum ven- terque utrinque serie signorum 6-formatorum fulvorum, * From one or two particulars in the description, I am inclined to think that Baetis tessellata, Hag., may be a Leptophlebia. It may be L. colom- bie, Walk., on the point of casting the subimaginal pellicle. Baetis tessellata, Hag. 1861; (nec. Walk. 1853). Subimago. @. “Als grisew, nervis luridis, et maculis quadratis pellu- cidis numerosis; postice minime. Thorax luteus; mesothorax linea fusca utrinque. Pedes lutei, apicibus tarsorum fuscis. Abdominis seg- menta lutea, maculis trigonalibus latero-dorsalibus utrinque fuscis dua- bus.” (Hag.) Long. corp. 2 16, exp. al. 26 mm. Hab.—Puget Sound, Washington Territory (Hag.). As the type is in alcohol (in the Berlin Museum) its affinities can be easily determined. on the Ephemeride. 151 et apud basin segmenti singuli supra lineole pallida longitudinales dus sunt. Sete fusce, juncturis obscuris. Pedes saturate rubiginosi, femoribus bicinctis, ?. Processus ventralis penultimi segmentorum in- teger. Hong. corp. ¢ 12; aly ¢ 13, 9 14°35; set. 35 mm. Hab.—The St. Lawrence; Chicago; Washington (Ha- gen); Savannah (Osten Sacken). Heptagenia venosa. (Genitalia maris, Pl. VI. fig. 24.) (?) Ephemera maculata, Pod. 1761. EH. venosa, Fab. 1775. (?) EH. berolinensis, Mul. 1776. EH. fusco-grisea, Retz. 1783. H. nervosa,* Vill. 1789. Baetis dispar, Curt. 1834. B. venosa, Ste. 1835-6. H. rufa, Ramb. 1842. (?) B. purpurascens & forcipula, Pict. 1843-5. B. longi- cauda, Ron. 1856 (nec Ste.). Hedyurus venosus, Etn. 1868. Subimago, v. v.s. Ale pallidissime cervine, nervis transversalibus fuscis nigricanti marginatis, fasciis trans- versalibus pallidis indistinctis duabus trajectis; area submarginalis areszeque marginalis apex flavescenti tincti, fasciis obscuris interrupti. Pedes cinereo-olivacei, tarsis cinereis. Setze fuscee. Imago, v.v.s. <¢. Oculi supra atro-picei, vel picei ; subtus apud orbitas ochracei, linea griseainterposita. Tho- racis tergum fuscum. Al vitrine, nervis corvinis ; apex are marginalis nigricanti tinctus. Pedum antici fusco- corvini, tarsis corvinis ; posteriores saturate virescenti- grisel, genubus. tarsisque corvinis. Abdomen supra fuscum, vel fuliginoso-hepaticoloratum, latera versus pal- lide testaceum, strigis lateralibus fuscis obliquis ; subtus saturate brunneo-hepaticoloratum. Sete fusce. @. Mari simillima. Processus ventralis penultimi segmentorum integer. Long. corp. g 12-14, 2? 12-18; al. 6 18, 2 15-17; set. g 30-48, 9 15, subim. 17 mm. Hab.—Scandinavia (Zet.); England; Belgium (De Selys); France ; Switzerland; Dalmatia (Pict.); Corsica (Hag.). Instreams. June. * M. Pictet (1843-5) unfortunately cited this synonyme as one origi- nated by Fabricius. 152 Rey. A. E. Haton’s Monograph Var. (?) forcipula. (Baetis forcipula, Pict. 1843-5.) Hab.—Germany, Austria, Bohemia, Bavaria, and Pied- mont (Pict.). Undescribed. Specimens probably exist in the Vienna Museum. Heptagenia longicauda. (Genitalia maris, Pl. VI. fig. 25.) Baetis longicauda & subfusca, Ste. 1835-6. Subimago, v. v.s. ¢?. Ale pallide fumato-nigricantes, nervis sub-furfurosis, transversalibus anguste cinereo mar- ginatis. Pedum antici picei, tibiis nigricanti tinctis, et tarsis anthracinis ; posteriores femoribus olivaceis, tibiis nigricantibus, et tarsis corvimis. Imago, v. v. s. ¢. Oculi atro-fuliginosi. Thoracis tergum aterrimum, vel atro-fuscum, politum. Alz vel vitrine, vel vix virescenti-griseo tinctz, nervis atro- piceis: apex ares marginalis antice vix virescenti- griseus. Pedum antici atro-picei, femoribus apud bases pallidioribus ; posteriores femoribus fuscis, vel fusco- luteis, tibiis testaceis, et tarsis vel corvinis vel saturate hepaticoloratis. Abdomen supra umbrinum vel rubido- fuscum, juncturis pallidis, et apicibus segmentorum fuscis ; latera dorsi bases segmentorum versus flavescentia, stri- gis singulis saturate fuscis obliquis ex horum apicibus ; venter fuliginoso-hepaticoloratus. Sete et forceps atro- piceze. @. Simillima mari sed pallidior. Ale vitrine, nervis fusco-piceis: arez marginalis et submarginalis antice tantum apices versus vix virescenti-griseo tinctz. Pro- cessus ventralis penultimi segmentorum integer. Long. corp. ¢ 11-12, ¢ 9; al. d 11, 9 I-15; set, 6 27, 2 15, subim. 12 mm. Hab.—Great Britain. July to September. In cold streams and rivers. Heptagenia angustipennis. Lphemera angustipennis, Ramb. 1842; Baetis angusti- pennis, Ed. Pict. 1865. Subimago, v.s.s. 2. Ale cervine ; nervorum longi- tudinales testacei, transversales nigricantes, anguste mar- on the Ephemeride. 153 ginati. Pedes lutescentes, femoribus obscure annulatis, anticis tibiarum luteis, posterioribus testaceis, et tarsis fuscis. Sete fuliginosze. Imago, (?) (Hphemera madritensis, Ramb. MS.) v. s.s. ?. Thoracis tergum luteum. Ale vitrine; nervorum longitudinales testacei, transversales picei. Pedes postici femoribus luteis, singulis cingulis nigris, tibiis testaceis, et tarsis luteis. Processus ventralis penultimi segment- orum vix retusus. Long. al. im. 14, subim. 11 mm. Hab.—Madrid (Ramb.). Heptagenia Picteti. Baetis Picteti, Meyer-Dir, 1864, Subimago,s.s. ‘“ Ale albicantes, nervis longitudina- libus atro-fuliginosis, et ceteris atris ; antica parte tertia basali, fasciisque transversalibus quatuor (quarum prima atque tertia abbreviatz sunt), et vestigio quoque quintz apud apicem, griseis. Tergum thoracis fuscum, politum. Pedes fuscescentes, cruribus pallidioribus. Abdomen fuscum, juncturis pallidis. Setz albicantes, annulis pallidis.” Long. corp. 5°5, al. 7, set. 5-6 lin. Hab.—Tessin and Ober Engadine (Meyer-Diir). Heptagenia insignis. (Genitalia maris, Pl. VI. fig. 26, 26a; note ventrales abdominis, fig. 26b.) Baetis nontana, Hag. 1863; (nee Pict.). H. insignis, Etn. 1870. Subimago, v. v. s. Alze pallide cervine, apud bases et costas vix sulphureo tinctz, nervis ipsis sulphureis vel olivaceis ; antica apud marginem terminalem cinerea, marginibus nervorum transversalium atris. Imago, v.v.s. g & 9. Oculi sub-olivacei, strigis singulis fuscis intersectis. Thoracis tergum fuscum vel sub-olivaceum [piceum in s. s.]. Ale vitrine, nervis piceis, costis et subcostis plus aut minus fuscis: arez anterioris marginalis et submarginalis vix virescenti- griseo bases versus tinctz, apicibus nigricantibus. Pedum antici atro-picei vel corvini, juncturis apicalibus tarsorum 154 Rev. A. E. Haton’s Monograph pallidioribus; posteriores sub-olivacei, vel virescenti- olivacel, tarsis atrescentibus. Abdomen sub-olivaceum, vel pallide virescenti-griseum, apice lutescenti; segmen- torum apices, strigeeque laterales ex his oblique producte, atri ; seepe quoque series centralis est femine strigarum brevium nigricantium: venter maculatus similiter ac in Tab. VI., fig. 26b, effingitur. Sete atre, piceze apices versus. Forceps corvinus. Processus ventralis penul- timi segmentorum integer. Long. corp. ¢ 11-12, 9 12-14; exp. al. ¢ 13-17, ? 13-15; set. Gg 22-23, subim. 14-20, 9? 20, subim. 15 mm. Hab.—Kngland. May, June, and July or August. In rivers. Heptagenia montana. Baetis montana, Pict. 1843-5. Imago, v. s. ¢. “Caput nigrum, oculis cyaneis. Prothorax supra rufescens, macula in medio nigri: meso- et meta-thoraces supraatri. Alee vitrine, nervis tenuibus nigris; apex arez marginalis antice fuscescens. Pedum antici nigri: posteriores fulvyi. Abdomen supra griseo- fuscum (in figuri ochraceo-olivaceum, juncturis et strigis lateralibus obliquis obscuris), setis fuscis ” (Pict.). Long. corp. ¢ 13, set. 30, exp. al. 28 mm. Hab.—Near a small stream from Brevent, above Cha- mounix (Pict.); and on the Austrian mountains (Brauer) . Heptagenia Bellieri. Baetis Bellierit, Hag. 1860. Imago, v.s.s. 9%. Ale vitrine, lacteo tincte, nervis piceis; apex areee marginalis paulo infuscatus. Pedum antici picei; posteriores testacei, tarsis fuscis. Seta piceze. Processus ventralis penultimi segmentorum in- teger. Long. al. 14 mm. Hab.—Sicily (Hag.). According to Dr. Hagen, this species somewhat resembles the preceding one in colour. on the Hphemeride. 155 Heptagenia zebrata. (Genitalia maris, Pl. VI. fig. 28.) Baetis zebrata (fo subim., 2 im.), fallax (¢ subim.), fluminum [nec Pict.] (¢ im.), Hag. 1864. Subimago, v.s.s. ¢. Ale cervine; nervorum longi- tudinales testacei, transversales per-anguste nigro mar- ginati, Imago, v.s.s. &. Thoracis tergum fuscum. Ale vi- trine, nervis piceis. Pedum antici femoribus fuscescen- tibus, cingulis et apicibus atro-piceis, tibis atro-piceis, et tarsis fuliginosis; posteriores femoribus fusco-testaceis, cingulis in mediis et apicibus sub-piceis, cruribusque fuliginosis. Abdomen supra pallide olivaceo-fuscum, latera versus flavescens, apicibus segmentorum anguste piceis. Setze fuligimosee. ?. Thoracis tergum furfurosum. Ale vitrine, cras- sioribus nervorum longitudinalium testaceis, et trans- versalibus atris. Pedes lutescenti-electrini, cingulis et apicibus femorum nigris. Abdomen supra fuscum, api- cibus segmentorum obscuris; strigee laterales oblique e basibus segmentorum utrinque atre; subtus segmentum singulum maculis trigonalibus basalibus duabus atris. Setz albicantes, juncturis nigris. Processus ventralis penultimi segmentorum integer. Long. al. ¢ 9-10, 2 12; set. g¢ 20, subim. 12, 2 15 mm. Hab.—Corsica (Hag.). Heptagenia lateralis. (Genitalia maris, Pl. VI. fig. 27.) (?) Ephemera stigma, Gmel. 1790-3. Baetis lateralis, Curt. 1834. Cloe brunnea, Ramb. 1842. B. obscura, Hag. 1863 ; (?) Pict. 1843-5 ; (nec Ste.). Subimago, v. s.s. Ale saturate cervine, invari ; interdum tamen tribus prioribus nervorum longitudina- lium ochraceis. Imago, y. v. s. 6. Oculi atro-fuliginosi. Pedum antici atro-fusci, cruribus atro-piceis; posteriores sub- 156 Rey. A. E. Eaton’s Monograph fusci, tarsis piceis. Nervi alarum fusci. Venter vires- centi-fuliginosus; forceps ater; setee saturate fuliginosz. Reliqua veluti in femina. ?. Oculi atro-fuliginosi. Thoracis tergum aterrimum, politum. Alze vitrine, nervis piceis. Pedum antici atro- picei, tarsis atris ; posteriores saturate picei, femoribus vix annulatis, et tarsis atris. Abdomen supra hepatico- fuscum, apicibus segmentorum vix obscuris, nisi ma- culis trigonalibus apud latera obscuris: venter fuscus, juncturis virescenti-griseis, et interdum plexu nervorum ventralium penultimi segmentorum vix hepaticolorato. Setze corvine. Processus ventralis penultimi segmento- rum integer. Long. corp. ¢ 5-9, 2? 7; exp.al. d 2? 6-9; set. o 19, subim. 10, 9? 8 mm. Hab.—KEngland and Wales; Carinthia; Switzerland (Pict.); the South of Spain (Ramb.). July and August. In mountain torrents, and cold streams. M. Pictet’s description of B. obscura was probably drawn up from a dried specimen. Heptagenia guttata. Baetis guttata, Pict. 1843-5; Hphemera (Baetis) guttata, Blanch. 1851. Imago, s.s. ¢. Caput et thorax fusci, flavo varie- gati (‘‘ punctati,” Pict.). Alze vitreee, nervis atris ; area marginalis pallidissime fuscescens. Pedes flavescentes ; femora apicibus maculisque singulis in mediis, tibizeque apicibus, nigris. Abdomen flavum (in figura fuscum), apicibus segmentorum strigisque lateralibus ex his obli- que productis, atque seriebus strigarum longitudinalium supra subtusque duabus, atris. Sete flavescentes, junc- turis in vices late et anguste nigro annulatis.” (Pict. & Blanch.) Long. corp. 2 12, set. 18, exp. al. 29 mm. Hab.—Valdivia, Chili (Blanch.). The following is probably an indeterminable species of Heptagenia. Ephemera gemmata, Scop. 1768. Imago,s.s. 9. “HE. gemmata. Tubercula tria frontalia, diaphana, crystallina, nigra, punctulata [ocelli]. Corpusrufum. Ineisure abdomi- nis marginibus flavicantibus. Setz caudales unciales.”’ Long. 7:5.’ Hab.—Circa aqueductum Fodinarum Idrensium (Scop.). on the Hphemeride. 157 Heptagenia torrida. Baetis torrida, Walk. 1853. Imago, v.s.s. @. Thoracis tergum castaneo-piceum. Ale vix fusco suffuse: antica areis marginali submargi- nalique saturatioribus. Pedum antici rufo-picei; pos- teriores saturate furfurosi, apicibus femorum rufo-piceis. Abdomen (decoloratum) apicibus segmentorum obscuris ; setis carens. Processus ventralis penultimi segmentorum integer. Long. corp. ? 8, exp. al. circa 20 mm. Hab.—The Philippine Islands. Heptagenia determinata. Baetis determinata, Walk. 1853. Imago, v.s. s. @. (reliquie typi). Picea. Thorax striga dorsali longitudinali fulva. Ale vitrine: antica costa’ apud basin saturate ochraced, nervis fuscis, atque areis marginali submarginalique quasi incrassatis et fuscis. Pedes furfurosi, tarsis et apicibus femorum fuscis. “Abdomen striga lata flavescenti, notis paucis piceis inclausis.”” (Walk.) Long. corp. ¢ 11, al. 24 mm. Hab.—Java. In this genus the cross-veinlets in the apex of the marginal area of the anterior wing vary in character in the same species, so much so, that they may be simple and free, or divided and conjoimed, in either sex of a species, indifferently. Sometimes, however, they are of shght service. H. elegans and some other yellowish species have two evanescent dark triangular dorsal dashes between the wings of the subimago, which I have purposely omitted to mention in the descriptions. 158 Rev. A. HE. Eaton’s Monograph EXPLICATIO TABULARUM. Signum asterisci * iis figuris appositum est quas ex aliis operibus recepimus; omnes relique icones sunt originales, a nobis secundum naturam operose camera lucida delineate, et magnitudine aucte. Fig. *1. OED NS? Ue ro S Tab. I. Venez alarum anticarum. Lachlanie abnormis. Oligoneurie rhenane. Asthenopi (sp. nondescript.); in Mus. M’Lach.; de Texas. Campsuri latipennis (in parte). Polymitarcyos virginis. Pentagenie vittigerc. Hexagenic limbate (in parte). Euthyplocie Hecube (in parte); 8a, apex ale. Ephemere vulgate (in parte). Fragmentum fossile Oolithicum, speciei generis incerti Ephe- mere affinis, de Solenhofen. Ex exemplari in Museo Brit- tannico; magnitud. auct. (7x7). Tab. II. Vene alarum anticarum. Potamanthi lutei (in parte). Leptophlebie australasice. . Leptophlebie marginate (in parte). 2b. Leptophlebiw cwpide (in parte). 2c. Leptophlebte fusce. *3. Tricorythi varicaude, 9.*38a g. 4. Cenis dimidiate. 5. Ephemerelle ignite (in parte). 6. Betisce obese (in parte). 7. Cloeonis similis (in parte). 8. Centroptili luteoli (in parte). 9. Baetis binoculati. * Note :— Tab: Tefen]... ISMLrOM ec. Packard’s Guide to the Study of Insects. Fig. 578. Tab. II. fig. 3, 3a 9 Savigny’s Description de l’Egypte (1817), Tab. IL. fig. 6, 7. Tab. III. fig. 7a-8c ne Dr. Hagen, in Stet. Ent. Zeit. (1855), Tab. I. Tab. III. fig. 17a oA C. Cornelius (1848). Tab. Y. fig. 30 5S Kd. Pictet, in Synopsis des Névropteres d’Espagne, Tab. IIT. fig. 1. Tab. VI. fig. 8 Ay Hagen, in Berendt’s Organische Reste im Bernstein (1856) Bd. II. Tab. VI. fig. 1. on the Hphemeride. 159 TAB, ILE Figs. 1-5. Vene alarum anticarum. Fig. 1. Baetis (sp. nondescript.) in parte ; de California. 2. Stphluri lacustris. 8. Coloburi humeralis. 4. Isonychie mance. 5. Heptagenie elegantis. 6. Mensura gallica (centimetres and millimetres). 6a. +p anglicana (inches and lines). 7. Oligoneurie rhenane, g im. genitalia infra. * 7a. 5 es » caput oblique. * 8, + pallida, 3 aS * 8a A 55 » penis. * 8b. 5p on », pes forcipis. * 8c. a 5 ? im. processus ventralis penultimi seg- mentorum. 9. 3 Trimeniane,,, processus ventralis penult. segm. infra. 9a. 7 x 3 processus ventralis penult. segm. oblique. 10. Campsuri latipennis, g im. genitalia infra. 10a. ”? ” cB 13 ile of albifili, Fr 3 12. ‘5 cuspidati, + 5 S13: 53 quadridentaté, ,, $9 14. Asthenopi curti, 3 - Mais sg. sy s, partes apicales penis. 15. Polymitarcyos virginis, ,, pes forcipis. lia. 7 oF subim. 3 15b. . a im. penis. 16. 3 Savignit, ,, pes forcipis. 16a. - fc >, penis. 17. Palingenie longicaude, ,, pes forcipis. *17a op aS 3 +~-penis. 18-18a. "3 late, » pes forcipis; subim. & im. 18b. a Pe »» penis infra. TAB. IY. Fig. 1. Pentagenie vittigere, g im. genitalia infra. 2. Hexagenie albivittate, ,, # 2a. F, + » pedis forcipis articuli apicales. 3. a limbate, »» pes forcipis. 3a. » pedis forcipis articuli apicales. 160 Rev. A. E. Haton’s Monograph Tas. 1V.—contin. Fig. 4. Hexagenie bilineate, g im. pes forcipis. 5. Ephemere vulgate, 5a. 5b. lla. 12. 12a. 33 ” ” 9 guttulate, ? bP lineate, ” ” danice, bb] glaucopis, immaculate, fasciate, 3) serice, bP) 13. Potamanthi lutei, 13a. 14, 14a. 14b. 15. lda. 15b. 16. 16a. 16b. Cf, 17a. 17b. 18. 18a, 18b. 18c. 18d. 19. 20. 20a. 20b. 20c. 39 ” Leptophlebic australis, 39 ” australasice, ” 2 furcifere, ” ” inconspicuck, ” 3) dentate, ” ” ” g ” strigate, nodularis, ¢ genitalia infra. penis. maculz dorsales abdominis. genitalia infra. pedis forcipis articuli apicales. macule dorsales abdominis. genitalia infra. pedis forcipis articuli apicales. not dorsales abdominis. genitalia infra. macule dorsales abdominis. pes forcipis. ” ” penis oblique. genitalia infra. pes forcipis. 39 penis infra. pes forcipis. penis. apex aree marginalis al. ant. pes forcipis. pedis forcipis articuli apicales. penis infra. pes forcipis. apex aree marginalis. penis infra. pes forcipis. apex are marginalis. penis infra. pes forcipis. pedis forcipis articuli apicales. penis infra. . apex processus ventralis penult. segment. apex arez marginalis. latus processus ventralis penult. segment. . pes forcipis. ala postica. penis oblique. penis infra (haud appendiculatus). Fig. 21. 21a. 22. 22a. 23. 23a. 23b. 24, 24a. 24b. - 25. 25a. 25b. 26. 26a. 26b. 26c. 264. 27. 27a. 28. 28a. 29. 29a. 29b. 3b. 4. Canis macrure, 5. 6. on the Hphemeride. 161 Tas. [V.—contin. Leptophlebie scite, ”? ” 3 im. pes forcipis. Taprobanes, ,, ” annulate, ” ” auriculate, ” ” marginate, ”» ” helwipedis, cincte, ” mollis, ” cupide, ” 22 penis infra. pes forcipis. penis oblique. pes forcipis. pedis forcipis apex. penis infra. pes forcipis. penis infra. ala postica. pes forcipis. pedis forcipis apex. penis infra appendiculatus. pes forcipis. penis supra. penis oblique. pedis forcipis apex. ala postica. genitalia infra. pedis forcipis apex. forceps infra. latus penis infra. pes forcipis. penis infra. ? im. processus ventralis penult. seg- ment. APAIB SV Leptophlebia nebulose, g im. pes forcipis infra. ” ” ” ” » fusce, ” ” modeste, ” > 29 dimidiate, luctuose, 2 latis penis infra. pes forcipis. penis infra. ala postica. pes forcipis infra. penis infra. penis oblique. genitalia infra. genitalia infra. forceps et membrana infra geni- talia. TRANS. ENT. soc. 1871.—pPaRTI. (MARCH.) M 162 Rey. A. E. Haton’s Monograph Tas. V.—contin, Fig. 7. Ephemerelle ignite, ¢ im. genitalia infra. 7a. 33 .. >, ala postica. 8. a anvarie, » pes forcipis. 8a. A A ss penis infra. 9. Betisce obese, » genitalia infra. 10. Cloeonis dipteri, » pes forcipis. Nk » similis, 3, pes forcipis. 12. » russult, »» pes forcipis. [13-26, pedes forcipium; 13a-26a, alee postice :] — 13, 13a. Centroptili luteoli, am: 14, 14a. an pennulati, 4, 15, 15a. i stenopterygis, g im. 16, 16a. Baetis binoculati, g im. Ife Ura » scambi, a 18, 18a. » jfunitimi, 19, 19a. » atrebatini, ,, 20, 20a. » hodam, ,, 21, 21a. 3. pheopis, ep 22, 22a. » tenacis, 55 23, 23a. > bucerati, * 24, 24a, » «amnict, 5 25, 25a. » pumil, a 26, 26a. 9 «6 nigr4, ‘5 27. » pict, 5 28. » Sp. nondescript. de California, ala postica. (Pro ala antica vide Tab. III. fig. 1.) 29. » Sp. nondescript. ex Australia, ala postica. *30. Siphluri flavidi, g im. apex abdominis supra. TAB. Wil. Fig. 1. Siphluwri armati, g im. pes forcipis infra. la. 3 . >, latus penis infra. 2. lacustris, 3 pes forcipis infra. 3. 33 Linneani, ,, pes forcipis infra. 3a. is A »» note ventrales abdominis. 4. # annulati, ,, note ventrales abdominis. 4a. 3 ip » pes forcipis infra. 5. Isonychie mance, »» pes forcipis infra. 5a. 5p a ? 5, processus ventralis penult. seg- ment. Fig. 6. 6a. 6b. 12a. 13a. 13b. 14a. 15a. 17a. 17b. 17e. 18a. 18b. on the Ephemeride. Tas. VI.—contin. Coloburi humeralis, im. bP] ” 29 ” ”» ©. 2? » haleutict, Cis 2 3 br Cronici anomali, ' Heptagewie semicolorate, ,, 39 nivate, op a borealis, ay of canadensis, 4, ” ” 39 As fusce, = bbs ”? ” bb) ” 3” - cupulate, oH ”» ” ” p basalis, op » ” » Be flavescentis, ,, 3 flavipennis, 45 7 » o& subim. ” 22 2 im. ” 9 3” 33 elegantis, g im. ” 2? a im. 39 ” ” “5 alpicole, im. As volitantis, ,y, 5 luridipennis, 5, 3” ” ” op flaveola, se 3” ” ? $5 vicarie, ne 2 ”» ” 35 venos@, es 5 longicaude, 4, 9 insignis, a ” ” ” ” ” ” pes forcipis oblique. penis infra. * processus ventralis penult. ment. pes foreipis oblique. penis apex infra. forceps infra. genitalia infra. genitalia infra. genitalia infra. genitalia infra. latus penis supra. penis supra. penis infra. pedis forcipis apex. genitalia infra. latus penis supra. pes forcipis infra. penis supra. genitalia infra. genitalia infra. penis infra. processus ventralis apex. ovivalyule apex. genitalia infra. processus ventralis apex. ovivalyula apex, genitalia infra. genitalia infra. penis. penis infra. pes forcipis. penis infra. penis infra. latus penis supra. genitalia infra. genitalia infra. genitalia infra. penis. note ventrales abdominis. M 163 seg- 2 164 Rey. A. H. Eaton on the Ephemeride. Tas. VI.—contin. Fig. 27. Heptagenie lateralis, g im. genitalia infra. 28. ay zebrate, » genitalia infra. 29. Isonychie ignote, » apex penis infra, ADDENDA. Page 47. To Centroptilum luteolum, add Hudson’s Bay Territory. To Centroptilum pheops, add Norway (Hammerfest and Alten). Page 68, note.* Add—Ephemerum, Tournefort (1694-1700) =Tradescan- tia, Lin., is the typical genus of Ephemere, Batsch (1802) =Commelynacee, an Order of Endogens. Hphemerum, Dodon (Ersch & Griiber) or Reichenbach (Lindley) = Lysimachia, Lin., a genus of Primulacee. Page 134. In Isonychia, the termination -onychia is adopted on account of -onyx being used as a generic termination in the names of some Chelonii. Ephemera pudica, Hag., is almost cer- tain to be identical with I. manca; this species often has a close reticulation contiguous to the veins of the inner mar- gin of the fore-wing, somewhat like that in the wing of Polymitarcys. ( 165 ) Il. New Species of Diurnal Lepidoptera from South and Central America. By W. C. Hewirson, F.L.S. {Read 2nd January, 1871.] Heterochroa Makkeda. Male. .Upperside: dark brown. Both wings crossed obliquely by a broad band from the costal margin of the anterior wing to the abdominal fold of the posterior wing ; orange on the anterior wing, and divided by the nervures into eight parts, the fourth part projecting beyond the rest towards the apex ; white on the posterior wing, with its outer border broadly orange. Anterior wing with some black lines and an orange band in and below the cell, and a subapical bifid orange spot; crossed by two sub- marginal rufous bands. Posterior wing crossed by three similar bands ; an orange spot at the anal angle, marked by two black spots. Underside: as above, except that it is rufous-brown, that the bands and spots are all white or lilac-white; that the anterior wing has the central band broken into spots by a rufous line, a third subapical spot, and a triangular bifid white spot at the base, and that the posterior wing has two white bands across the base, and covering the abdominal fold, and a short linear band between them and the central band. Exp. 2,4, inches. Hab.—Pari. In the collection of W. C. Hewitson. Easily known from all the other species by having the central band of the posterior wing divided longitudinally into white and red. On the underside it scarcely differs from H. Hrotia. Heterochroa Zalmona. Male. Upperside: dark brown. Anterior wing with indistinct bands of paler colour in and below the cell; crossed transversely near the middle from the costal margin to near the anal angle, by a slightly indented band of orange, divided into seven parts by the nervures ; TRANS. ENT. soc. 1871.—partT lt. (MAY.) N 66 Mr. W. C. Hewitson on five indistinct subapical spots. Posterior wing crossed obliquely by four bands of paler colour, converging to- wards the anal angle, the fourth band submarginal. Underside: rufous, clouded with brown towards the outer margins of both wings. Anterior wing with a bifid spot at the base, an oblong spot bordered with black in the middle of the cell, aud four small spots below these, all silvery-white ; the band of the upperside and five subapical spots white. Posterior wing crossed before the middle by two parallel bands of silvery-white, the band nearest the base broken in the middle; crossed at the middle by a band of black, and beyond the middle by a submarginal band of seven silvery-white spots. Exp. 2,1, inches. Hab.—New Granada. In the collection of W. W. Saunders and W. C. Hewitson. Nearly allied to I. Hpione, which, instead of having the transverse white bands of equal breadth, parallel to each other, and slightly curved towards the base as in this species, has the second band very broad, and with its outer border curved towards the outer margin of the wing. Hurygona argentea. Male. Upperside: dark brown. Anterior wing rufous below the median nervure, from the base towards the middle of the wing, where it ends in a more distinct round spot. Posterior wing with a longitudinal rufous band from the base to the outer margin. Underside: silvery-white. Anterior wing with four transverse bands, and the outer margin, dark brown. Posterior wing crossed by six brown bands, all tending towards the anal angle: two from the base, a third from the costal margin united to the fourth, which runs near the inner margin, the other two submarginal, the outer one marked by a small black spot; the outer margin black, marked by a large orange spot. Exp. 1 in. Hab.—Nicaragua (Chontales). In the collection of Thomas Belt. Unlike any other species, and one of the most beautiful. Diurnal Lepidoptera. 167 Pyrrhopyga Crida. Upper and underside: blue-black. The head and anus scarlet; the antenne black. Anterior wing crossed trans- versely at the middle, from the sub-costal nervure to near the anal angle, by a narrow, trifid, transparent, glossy white band. Exp. 2 inches. Hab.—Nicaragua (Chontales). In the collection of Thomas Belt. Pyrrhopyga eximia. Upperside. Anterior wing dark green-brown, with a spot in the cell, and an oblique, continuous, very trans- parent, and highly polished white band, beyond the mid- dle, nearly parallel to the outer margin, extending from the costal margin to the submedian nervure, and divided into seven parts by the nervures. Posterior wing pale yellow, tinted with orange towards the base ; the base, a central transverse band, the nervures, and the inner and outer margins dark brown. Underside: as above, except that there is a subcostal ochreous band on the anterior wing, and that the brown on the outer margin of the posterior wing is much nar- rower. Exp. 2 inches. Hab.—Venezuela (Géring). In the collection of W. C. Hewitson. ( 169 ) III. Descriptions of a new genus and six new species of Pierine. By A. G. Burize, F.L.S., &c. [Read 6th February, 1871.) THE new genus and new species described in this paper are as under :— Ivias venatus : ; ; White Nile. Kricogonia Fantasia. : Nicaragua. Callidryas fornax : : Chili. a Jaresia : : Para. Euchloé imonea. : Mexico. Larinopoda (n. g.) lyccenoides West Africa. Genus Ixras, Hubner. Iwas venatus,n. sp. (Pl. VII. fig. 7.) Wings above, creamy-white ; front-wings with base broadly dusky; a dark brown disco-cellular spot, the apex, outer margin, extremities of nervures,a round spot between second and third median branches, and an arched streak connecting it with apical patch, dark- brown ; hind-wings with a brown disco-cellular point ; the outer half of nervures dusky; seven triangular mar- ginal dark brown spots at extremities of nervures: body blackish: wings below, pale ochreous ; front-wings with interno-discal area white; base sulphur-yellow; disco- cellular spot as above; costa, outer half of nervures, a streak across subcostals, and a spot between median branches as above, dark brown; hind-wings with basal costa orange, nervures blackish, spots as above; an arched lunulate streak, parallel to outer margin from costa to below first median branch: body white. Expanse of wings, 1 inch, 11 lines. Hab.—White Nile. (Petherick.) Coll. B. M. Most nearly allied to I. Hulimene, but very distinct from any described species. TRANS. ENT. soc. 1871.—ParT ul. . (MAyY.) 170 Mr. A. G. Butler on Genus Kricogonta, Reakirt. Kricogonia Fantasia, n. sp. (Pl. VII. fig. 6.) 9. Wings above, greenish-white ; front-wings with the basal costa dusky sulphur-yellow ; a pale brown mar- ginal band beginning broad on costa, and tapering to near the anal angle; hind-wings tinted with pale sul- phur ; front-wings, below, with the greater part of the discoidal cell and basal half of the costal area bright sul- phur-yellow ; apical half of the costal area and apex tapering to near the anal angle, tinted with pale sulphur ; hind-wings as above, but brighter towards the base; body creamy-white ; anus brownish. Expanse of wings, 2 inches, 4 lines, to 1 inch, 8 lines. Hab.—Nicaragua. (De Latre.) Coll. B. M. Most nearly allied to K. Lyside (Castalia Butl., nec Fabr.), but at once distinguishable by the marginal band and differently coloured bases of the wings. Genus Catuipryas, Boisduval. Callidryas fornax, n. sp. @. Allied to C. Larra ; wings above, bright sulphur- yellow; front-wings with apical and external areas densely irrorated with dull crimson; a black disco- cellular spot ; apex and terminations of nervures brown ; a biangulated discal series of blackish spots bounded externally on the disc by yellow spots, the largest nearest to the anal angle ; hind-wings with external area to cell dull crimson, enclosing one or two yellowish spots to- wards the costa; apices of nervures blackish; cilia yellow ; abdominal area pale yellow; body yellow, thorax clothed with silky grayish hairs; wings below golden yellow; the apical half orange-tinted ; the whole surface irregularly patched with red; all the markings (which are arranged as in (. Philea, 9) are broad and dull red ; two silver spots at the end of the cell in both wings ; but those of the front-wings badly defined: body golden- yellow. Expanse of wings, 2 inches, 10 lines. Hab.—Chili. Coll. Kaden in Coll. Druce. Intermediate between C. Avellaneda and C. Darra, and one of the most beautiful species in the genus. New species of Pierine. li Callidryas Jaresia, 0. sp. ?. Wings above, orange-yellow; margin and disco- cellular spot black, as in C. Statira ; abdominal area pale ochreous ; body grayish ; wings below, satiny ochraceous, becoming pearly towards external margin; markings as in CO. Statira, but more sharply defined and rosy; the marginal band of front-wings not confounded with the discal series of spots, and the disco-cellular spots better defined; a rosy point at the base of the front- wings ; body ochreous. Expanse of wings, 2 inches, 9 lines. Hab.—Para. Colls. Hewitson, Wallace, and Druce. I think it just possible that this may be the female of C. Wallacei, Felder, which, however, I have only seen from Peru and Bolivia; perhaps it is more likely to be an extreme form of C. Statira, it, however, differs con- stantly in its more robust form, and in the other charac- ters mentioned above. Genus Betenors, Hiibner. Belenois Cynis, var., Hewitson. (Pl. VII. fig. 1.) 3. Differs from the typical form in the absence of the marginal spots of hind-wings, and the restricted gray area at the base of the wings on the under-surface. Expanse of wings, 2 inches, 14 lines. Hab.—Ayerpanas, Malacca. (foberts.) Coll. Roberts and B. M. My figure of this variety was taken from an example lent to me some years ago by Lieutenant Roberts: a similar example has since been presented by him to the National Collection ; before we received this specimen, I supposed two examples of P. Illana, Felder (a local form of P. Polisma, Hewitson), to be the true P. Cynis, the insect being so labelled by Mr. White when I first arranged the collection; I consequently took P. Illana under the name of P. Cynis, as the type of my new genus Phrissura, an unfortunate error, considering that P. Cynis does not possess the anal tuft peculiar to the species of Phrisswra, and, moreover, agrees in venation, and in every other character, with the species of the genus Belenois. ' 172 Mr. A. G. Butler on Genus Hucuior, Hibner. Euchloé Limonea, n. sp. 3. Allied to H. Scolymus and Genutia ; front-wings strongly falcate, above yellowish-white, apex sulphur- yellow; a squamose olivaceous marginal band from the termination of the first subcostal to the termination of the third median branch, bounded within by an oblique elongate-ovate orange band; a pyriform disco-cellular spot; base blackish; hind-wings sulphur-yellow; base blackish; ground-colour of wings below as above ; front- wings, apex sparsely irrorated with olivaceous and brown scales ; subapical orange band visible through the wing ; nervures black-tipped ; hirid-wings marbled, almost as m E. Genutia, with squamose olivaceous spots; body whitish, abdomen sulphur-yellow. Expanse of wings, 2 inches. Hab.—Mexico. Coll. W. W. Saunders. This very distinct species of the section Midea, is in- termediate in character between H. Scolymus and L. Genutia. LARINOPODA, 0. gen. Allied to Fuchloé, but with the aspect of Nychitona (Pontia of recent authors). Wings pyriform; front-wings with five subcostal branches, the first emitted at a short distance before the end of the cell, the second immediately before the end, the third half-way between the cell and apex; the fourth and fifth at two-thirds of the distance from the cell to the apex: upper disco-cellular short, slanting obliquely in- wards ; lower, three times the length of upper, angulated, slanting obliquely outwards; median branches emitted near together; hind-wings with subcostals emitted close together, so as to reduce the upper disco-cellular to a point ; lower disco-cellular very oblique, about eight times the length of the upper ; second and third median branches emitted at about half the distance from each other that exists between the second and first ; body short, robust ; abdomen swollen beneath; legs thick ; antennz short, slender, feebly clubbed; palpi long, slender, not hairy. New species of Pierine. 173 Larinopoda lyeenoides,n. sp. (Pl. VII. figs. 2-5.) 9. Wings above, white (like rice-paper), basal costa . and apex of the front-wings brownish; thorax brownish, abdomen white, palpi orange. Wings below, white; front-wings with a rounded blackish costal spot above the termination of the ceil, and two or three at the apex; basal costa speckled with black atoms; hind-wings with a brown subapical spot, and an indistinct point placed obliquely below it ; a black spot just below the origin of the first median branch ; body white, legs and palpi orange-yellow. Expanse of wings, | inch, 9 lines. Hab.—West Africa. Coll. «W. W. Saunders. The above genus, though evidently belonging to the Pierine, seems, in some respects, intermediate between the Hronia group of that subfamily and the genus Delo- neura of Trimen (Lyccenine), and bears out the view maintained by those Lepidopterists who place these two subfamilies in juxtaposition; its natural position in the Pierine is between Nepheronia and Huchloé. my ie (ees SE ( 175 ) IV. On the dispersal of non-migratory Insects by atmos- pheric agencies. By Atsurt Miner, F.R.G.S., &c. [Read 20th February, 1871.] Ir any of my friends, who may do me the honour of perusing this paper, should feel tempted to say that it appears “like a wild flower, where it was least expected,” I would tell them, that the subject of Insect diffusion has long had a share of my limited leisure, but that I would not yet have ventured upon publishing my reflections, had I not been reminded by the annual address (1870) of our late president Mr. H. W. Bates, that it is probable the amount of migration and dissemination by winds, currents, and other means, is much underrated by some Entomologists. It is not within the scope of my theme to consider the great number of instances which literature records of migratory insects.* They are mostly prompted to un- dertake their wanderings by instinct, climatic or meteoro- logical influences, scarcity of food, and probably other causes at present unknown to us; and we are all more or less familiar with the accounts given of the travelling Lepidoptera, viz.: the larve of several Pieride, of Gastro- pacha processionea and pinivora, and of Leucanide (army- worms), the imagines of V. cardui, urtice, of several Papilionide, Pieride, Uranide, Sphingide, the ‘ Bugong’ moths, &c.; among Coleoptera, several Hydradephaga, Melolonthide, Lucanide, Coccinellidee, Apion vernale, &c. ; amongst Hymenoptera, Formicide, and Apide; in the Neuroptera (in the Linnean sense), Libellulide, Termi- tide ; in Orthoptera, Blattide, Locustide, Acridiide, &c. ; in the Diptera, the larve of several Sciaride (‘Heerwurm’); the imagines of a Bibio, and sundry Syrphide ; whilst the hosts of Aphide, and a few species belonging to Notonecta and Aphrophora may be taken as representing the erratic Hemiptera. All these Insects are, so to say, travellers by choice or profession, and very little surprise need greet their ap- pearance, isolated or en masse, in any part of the globe. But it is very different with the normally more or less * A general survey of the subject has been given by C. Cornelius, in his work “Zug und Wanderthiere aller Thierklassen,” Berlin, 1865. TRANS. ENT. soc. 1871.—PartT U. (MAY.) 176 Mr. Albert Miller on the dispersal stationary or else local insect tribes, which, by habit, food, or bodily organization, are confined to their native haunts. Their appearance in out of the way localities deserves to be fully investigated, and in following their tracks, we may join Thomas Moore, in saying: ‘* Poor wanderers of a stormy day, From wave to wave we are driven, And fancy’s flash and reason’s ray, Serve but to light the troubled way.” Various authors have lit up parts of the troubled way of these insect-waifs, by throwing reason’s ray on the means of their accidental transportation. Sir Charles Lyell, Messrs. Kirby, Darwin, Wallace, Wollaston, Bates, and other naturalists, have shown what human agency, for instance, trade and navigation,* the carrying by larger animals and birds, by the ocean and rivers, by floating trunks of trees, and matted floating islands, pumice stone,f icebergs, and other drifting objects, and what atmos- pheric conveyance can, in some cases, accomplish. But I agree with Mr. Bates, that the amount of dis- semination by atmospheric means is still much underrated, and it has therefore appeared desirable to me, to bring together into a small compass, some of the leading facts which have forced on my mind the conclusion, that aérial involuntary locomotion is a most active agency in regu- lating the distribution of sedentary terrestrial Entoma. It is well known that Monads, Infusoria, winged and other seeds, the ashes of volcanic eruptions, the sands of the deserts of Africa and America, and other substances, are carried over land and sea by heavy gales. Fishes and newts have been known to be taken up by waterspouts or whirlwinds, and deposited far from their original localities, when the forces which had raised them, were spent. A. von Humboldt has recorded that small * Consult Von Frauenfeld’s paper in Verhandl. zool.-bot. G. in Wien, XVII. pp. 425-464, 1867. + I have often found such floating and porous pumice stones on the Rhine, along the line of rejectamenta left by the spring floods, and I used to find these stones resorted to by various small Carabide, such as Bem- bidium, Anchomenus, Loricera, Chlenius, Omophron, and others. I can therefore confirm Mr. Bates’ supposition (‘Naturalist on the River Ama- zons,’ 2nd ed. 1864, p. 299), that they often serve as vehicles for insects and seeds to distant shores. I have also seen such stones left high and dry by a freshet, the pores filled with river mud, and seeds germinating in it. A. M. of non-migratory Insects. 177 songsters and butterflies were met by him several times in the South Sea, during gales blowing away from the land, and that, just as involuntarily, insects are often carried to the height of 15,000 to 18,000 feet above the plains. This illustrious savant says that the warmed surface of the earth causes a vertical current of air, by which light bodies are driven upwards, in confirmation of which explanation he gives the observation of M. Boussingault, who, together with his companion, Don Mariano de Rivero, saw rise from the valley of Caracas, whitish illuminated bodies mounting up to the height of 5,400 feet to the summit of the Silla, and then sink to- wards the adjoining coast. This was at midday, and lasted an hour without interruption. Taken at first for a swarm of small birds, these bodies were afterwards recognized as small balls of accumulated blades of the grass Vilfa tenacissima.* The same author observes that Captain Fremont met with bees on the peak in the Rocky Mountains, bearing Fremont’s name, and that, perhaps, like the butterflies met with by himself im much higher regions of the Andes, also within the line of per- petual snow, they were involuntarily carried up by ascending currents of air.t Mr. Wollaston says: ‘ Un- willing victims,..... are ever and anon hurried to comparatively distant lands by the very winds that blow ; and not only to distant lands, but over altitudes in which the severity of the cold would quickly annihilate them, were they (as, perhaps, usually happens) to be deposited there on their headlong and compulsory course.” { Sir Charles Lyell observes that, ‘as almost all insects are winged, they can readily spread themselves wherever their progress is not opposed by uncongenial climates, or by seas, mountains, and other physical impediments ; and these barriers they can sometimes surmount, by abandoning themselves to violent gales, which may, in a few hours, carry them to very considerable distances.” § Our president, Mr. A. R. Wallace, has lately reminded us that violent gales of wind, for example, will carry bodies of greater specific gravity than beetles for many miles * A. von Humboldt, ‘Ansichten der Natur,’ 1860, vol. II. p. 30. ¢ Ibid. Vol. I. p. 42. t ‘On the variation of species,’ p. 148, 1856. § ‘Principles of Geology,’ 9th edit., p. 656. ike Mr. Albert Miller on the dispersal through the air; and storms and hurricanes are of such frequent occurrence, that they must have played a large part in stocking all uninhabited lands. (Address, &c., to the Ent. Soc. Lond. 23rd January, 1871.) A small longicorn beetle was observed to fly on board a vessel 500 miles off the west coast of Africa.* A moth be- longing to the genus Andea was captured at sea, more than 200 miles from the west coast of Africa, and a but- terfly and several grasshoppers were noticed on board the ship, all of which are said to have been borne over the sea by the trade wind.f hirticollis. 16. be Breweri. 6. 3 Duboulai. ile > integra. Te re strigosus. 18. "4 Wilsoni. 8. oF rufo-cwpreus. 19. 5 Waterhousei. 9. ‘ Odewahnii. 20. AS Saundersii. 10. 7 fasciatus. arate * distincta. we Be tarsatus. | Dy. “a Duboulai. Fam. SAGRIDAL. Genus Dusou.ala, n. g. Corpus subelongatum, modice convexum, non metalli- cum, pube griseo adpresso dense vestitum ; caput exertum, modice elongatum ; oculis integris, granulosis, vix pro- minulis ; palpis mawillaribus articulo ultimo ovato, apice obtuso; mento transverso; ligula apice bifida; antennis corporis dimidio fere equalibus, filiformibus. Thorax subcordiformis, latitudine non longior, angulis anticis indistinctis ; elytra oblonga, convexa, glabra, irregulariter punctata ; pedes robusti ; femoribus posticis incrassatis, subtus spima compressa trigonata armatis; wnguiculis simplicibus; prosternum coxis equialtum, postice non prolongatum ; pygidium elytris non obtectum. This genus must take an intermediate place between Megamerus and Prionesthis, with the former it agrees in the form of the thorax, and in the emarginate ligula, but differs in the shorter head and antenne, less prominent eyes, and in the form of the apical joints of the maxillary palpi; from the latter, although agreeing in the form of the maxillary palpi, it differs greatly, both in the form of ‘the thorax, and also in having the hinder thighs armed beneath. TRANS. ENT. soc. 1871.—PaRT lll. (AUGUST.) DD 382 Mr. J. S. Baly on Duboulaia flavipennis. Subelongata, modice convexa, piceo-nigra, griseo- sericea, antennis, clypeo antice, labroque fusco-fulvis ; tibiis tarsisque obscure piceis; thorace crebre punctato, dense albo sericeo; elytris tenuiter punctatis, obscure fulvis, sutura anguste picea. ae Long. 83 ln. Hab.—Champion Bay, Western Australia; collected by Mr. Duboulay. Antenne half the length of the body, fusco-fulvous ; front impressed with a longitudinal groove, which ex- tends downwards as far as the apex of the clypeus; surface on either side distinctly punctured, clothed with adpressed white hairs; clypeus large, pentagonal, thickly punc- tured; its lower edge, together with the labrum obscure fulvous; thorax as broad as long, sides rounded and dilated in front, constricted behind the middle; above moderately convex, somewhat flattened on the disc, closely covered with small, but deep and well-defined punctures; surface clothed with adpressed whitish hairs ; elytra much broader than the thorax, oblong, glabrous, shining fulvous, the suture narrowly edged with piceous ; whole surface faintly wrinkled, rather closely but finely punctured ; hinder thighs thickened, armed beneath with a large, flat, triangular tooth. Genus Carpopuacus, McLeay. Carpophagus excavatus. Anguste oblongus, piceo-niger, pube adpresso griseo dense vestitus ; thorace nigro, irregulariter excavato et foveolato, interspatiis glabris, nitidis ; elytris oblongis, postice paullo attenuatis, piceis, nitidis, profunde exca- vato-foveolatis ; fovis magnis, substriatim dispositis, griseo-hirsutis, interspatiis glabris, nitidis, rugulosis. Long. 10 lin. Hab.—Champion Bay, Western Australia; collected by Mr. Duboulay. Thorax longer than broad, subconic ; sides more quickly converging near their apex; above subcylindrical, irregularly excavated, densely clothed with adpressed hairs; interspaces between the excavations smooth, gla- Australian Phytophaga. 383 brous, shining black; on the centre of the disc these interspaces are small, detached, and wart-like, but on the sides of the thorax they are much larger and irregularly confluent; elytra oblong, much broader at the base than the thorax, shghtly narrowed towards their apex ; surface covered with large, irregular, deeply excavated fovee, whose surfaces are thickly clothed with short adpressed griseous pubescence; these fovesw, which are arranged in about ten longitudinal rows on each elytron, cover nearly the whole disc, the spaces between the fovew being shining glabrous, coarsely wrinkled, and obscure rufo-piceous; pygidium rufo-piceous. The specimen from which I have made the above description is (judging from the shorter antennz and from the very slight enlargement of the hinder femora) a 2; the ¢ probably differs in colour from the 2, in the same way as in VU. Banksie ; in that species, the ¢ is obscure fulvous, whilst the 9 is lead-coloured. Fam. CRYPTOCEPHALIDAL. Genus Exapnopgs, Suffr. Hlaphodes albo-hirsutus. Anguste oblongus, obscure cupreus, pube albido adpresso vestitus, antennarum dimidio basali, labro pedibusque (femoribus anterioribus dorso, posticisque totis exceptis) fulvis, tarsis antennarumque dimidio apicali piceis ; tho- race subremote punctato; elytris tenuissime granulosis, minute transversim rugulosis, tenuiter et subremote punctatis, punctis ad latera seriatim dispositis. Long. 1} lin. | Hab.—Western Australia, Champion Bay. Head thickly clothed with long white hairs; front impressed with a longitudinal groove ; mouth fulvous, apex of jaws black; antennz rather longer than the head and thorax, the six outer joints moderately dilated, black ; thorax twice as broad as long at the base, sides nearly parallel behind the middle, rounded and converging in front; apex of the basal lobe entire, its surface very slightly reflexed ; scutellum broadly oblong-ovate ; elytra not broader than the thorax, rather more than twice its length, their sides parallel ; the humeral callus moderately prominent. DD2 384 Mr. J. 8. Baly on Genus Drrroprpvus, EHrichs. Ditropidus carbonarius. Subquadratus, postice paullo attenuatus, niger, nitidus, antennarum basi, labro mandibulisque (his apice exceptis) fulvis, femoribus anticis, tibiis apice, tarsisque obscure piceis ; thorace tenuiter punctato; elytris tenuissime punc- tato-striatis, interstitiis planis, impunctatis, strus duabus ad latum subsulcatis, interstitiis lateralibus leviter con- vexls. Long. 2 lin. Hab.—Western Australia. Head finely but distantly punctured, nearly glabrous, only a few small white adpressed hairs being visible here and there on the surface; eyes distant, face impressed with a faint longitudinal lme; antenne slightly longer than the head and thorax, five outer joints moderately dilated, black, the remaining joints fulvous ; thorax twice as broad at the base as long, sides rounded and converg- ing from base to apex ; surface finely but not very closely punctured, the puncturing more crowded on the sides ; basal lobe distinctly notched, obsoletely reflexed; elytra broader at the base than the thorax, twice its length, sides shghtly narrowed from the shoulders backwards ; surface very finely punctate-striate, the imterspaces flat, impunctate; two outer striz subsulcate, their interspaces shghtly convex. Ditrepidus hirticollis. Subquadratus, postice paullo attenuatus, convexus, niger, pube adpresso albido vestitus, antennarum basi labroque rufo-piceis; abdomine corporeque supra (an- tennis apice exceptis) cupreus; thorace minute punctato, albo-hirsuto ; elytris distincte striato-punctatis, glabris, interstitis planis, apicem versus leviter convexiusculis, ad latera convexis, subcostatis. Long. 13 lin. Hab.—Western Australia. Upper half of head closely clothed with adpressed white hairs; lower half of face glabrous; five upper jomts of antenne moderately dilated; five basal joints Australian Phytophaga. 385 obscure rufo-piceous ; labrum rufous; thorax twice as broad at the base as long; sides rounded and converg- ing from base to apex; surface finely and subremotely punctured, covered with adpressed white hairs ; basal lobe slightly reflexed, its apex very feebly notched ; scu- tellum oblong, its apex acute ; elytra slightly broader at the base than the thorax, regularly punctate-striate ; interspaces plane, smooth, slightly convex towards the apex of the elytra, those near the outer border raised and subcostate for their whole length ; lower surface of abdomen and pygidium closely clothed with adpressed white pubescence, finely rugose-punctate ; pygidium as broad at its base as long; on its medial line is seen a faint longitudinal ridge. Ditropidus Duboulai. Oblongus, convexus, niger, nitidus, capite thoraceque cupreo-zneis, mandibulis apice, antennarum articulis sex basalibus subtus, femoribus anticis subtus, tibiis anticis apice, labroque obscure rufo-fulvis, thorace crebre sed tenuissime strigoso-punctato, basi linea brevi transversa impresso; elytris obscure viridi-eneis, subfortiter striato- punctatis, interstitis leviter convexis, transversim ru- gulosis. Long. | hn. Hab.—Champion Bay. Head remotely and very finely punctured, clothed with long griseous hairs; six lower joints of antennee obscure rufous, stained above with black, the remaining joints entirely black; apex of jaws also rufous; thorax slightly broader than the elytra; sides rounded, nearly straight and parallel at the base, obliquely converging from the middle to the apex; basal lobe shghtly reflexed, sepa- rated from the disc by a slight but well-defined transverse groove; disc very finely “punctur ed, somewhat closely covered with faintly impressed, longitudinal strie; elytra half as long again as the thorax, distinctly punctate- striate, interspaces on the inner disc obsoletely, those on the outer disc distinctly convex, transversely rugulose. Ditropidus strigosus. Breviter oblongus, obscure cupreus, pube adpresso albido dense vestitus, femoribus tibusque fulvis, piceo 386 Mr. J. 8. Baly on tinctis, tarsis piceis; supra nitido-cupreus, antennis ex- trorsum nigris, his basi labroque fulvis; thorace pube adpresso albido vestito, disco remote, lateribus subremote- punctato; elytris glabris, sat fortiter punctato-striatis, interspatiis fere planis ad apicem ut ad latera convexis, dense transversim rugulosis. Long. + lin. Hab.—Champion Bay; collected by Mr. Duboulay. Head clothed with adpressed white hairs; surface finely but distantly punctured ; labrum and lower half of antennee fulvous, outer half of the latter black; eyes large, reniform ; thorax as broad at the base as the elytra; sides obliquely converging and slightly rounded from base to apex ; upper-surface clothed with adpressed white hairs; disc remotely, sides rather more closely, impressed with moderately deep punctures; basal lobe slightly reflexed ; scutellum semi-ovate, rounded at the apex, its surface shining, impunctate ; elytra about one-half longer than broad, nearly parallel; surface rather densely punctate-striate, interspaces nearly plane on the ante- rior half of the imner disc, moderately convex towards the apex of the latter, and also on the outer disc, their whole surface closely covered with fine transverse rugosi- ties; legs fulvous, stained with piceous; tarsi pitchy- black. Ditropidus rufocupreus. Subquadratus, convexus, postice paullo attenuatus, pallide rufo-piceus, supra rufo-cupreus, antennis extror- sum nigris, thorace distincte punctato; elytris striato- punctatis, interstitiis planis, ad latera pone medium convexis. Long. 14-12 lin. Hab.—Western Australia, Champion Bay. Head clothed with adpressed whitish hairs, surface dis- tinctly punctured, impressed on the upper half of the face with a longitudinal groove; jaws black; antenne equal to the head and thorax in length, slender, five upper jomts only shghtly dilated, four upper joints blackish- piceous; thorax twice as broad at the base as long, sides rounded and converging from base to apex; surface impressed with numerous distinct but shallow punctures ; Australian Phytophaga. 387 basal lobe distinctly notched, its surface on the same plane as the disc of the thorax; scutellum regularly ovate, its apex acute; elytra slightly but distinctly broader at their base than the thorax, twice the length of the latter; surface regularly punctate-striate, inter- spaces plane, very minutely and distantly punctured, those on the hinder half of the outer disc convex, sub- costate ; on the upper half of the inner disc are a few very faint irregular ruge ; pygidium finely rugose-punctate, | clothed with adpressed white hairs. Ditropidus Odewahnii. Oblongus, cupreus, nitidus, antennis extrorsum nigris, his basi, labro pedibusque piceo-fulvis; thorace subremote punctato, lateribus substrigoso; elytris distincte punc- tato-striatis, interspatiis impunctatis, fere planis, apicem versus et ad latera leviter convexiusculis. Long. $-$ lin. Hab.—South Australia. Head remotely punctured, sparingly clothed with ad- pressed griseous hairs, face impressed with a longitudinal groove ; eyes large, shghtly notched ; six lower joints of antenne fulvous, the five outer black ; thorax as broad at the base as the elytra, sides rounded and converging from base to apex; upper surface remotely punctured, the punctures oblong, rather more crowded on the sides ; surface between the punctures smooth and impunctate on the disc, obsoletely strigose on the sides; elytra nearly parallel, scarcely narrowed posteriorly, regularly punctate-striate, punctures large but not very deeply impressed, oblong; interspaces smooth and shining, im- punctate, faintly wrinkled when seen under a strong lens ; on the disc nearly plane, on the inner disc near the apex, and on the outer disc, shghtly convex. Ditropidus tarsatus. Subquadratus, postice angustatus, 9 magis oblongus, sordide fulvus, subopacus, antennis extrorsum, thoracis margine basali, scutello, tarsisque nigro-piceis; elytris sulcato-striatis, striis fortiter punctatis; puncto humerali, sutura postice, margine apicali, maculisque tribus ante apicem transversim positis, pallide piceis ; abdomine fusco. 388 Mr. J. S. Baly-on Long. 1-13 lin. Hab.—Western Australia, Champion Bay. Head closely covered with adpressed fulvous hairs ; front impressed with a longitudinal groove; outer half of antenne pitchy-black ; thorax as wide as, or slightly wider at its base, than the elytra, sides regularly rounded and converging from base to apex; disc closely punc- tured, strigose-punctate on the sides; in the middle, ‘extending from the extreme apex of the basal lobe half- ‘way across the disc is a faint longitudinal ridge, on either side of which, just in front of the basal margin, is a broad but shallow and ill-defined transverse exca- vation ; basal margin narrowly edged with black; elytra subnitidous, scarcely equal in width to the base of the thorax, narrowed from base to apex; disc below the basal margin broadly but faintly depressed ; each elytron with eleven rows of sulcate strie, the first short; each stria impressed with a regular row of large round punc- tures, more or less stained with fuscous ; interspaces shightly raised, obsoletely convex on the inner disc, subcostate near the outer margin, distinctly punctured, here and there faintly wrinkled ; a spot on the humeral callus, and three large ill-defined patches placed trans- versely across the disc nearly half-way between its centre and the apex, obscure fuscous; of these patches the middle one is common and transverse, the two others oblong, and placed one on either side on the outer disc, and attached to the outer border of the elytron; the hinder half of the suture, the apical border of the elytra, and sometimes the hinder half of the lateral border, are narrowly edged with fuscous ; knees stained with piceous, tarsi pitchy-black. Ditropidus fulvus. Oblongus, fulvus, subnitidus, thorace sat crebre punc- tato, substrigoso, lateribus rugoso-punctatis, margine basali anguste nigro-marginato ; elytris punctato-striatis, punctis magnis, rotundatis, leviter impressis ; interspatiis obsolete convexiusculis, ad apicem magis elevatis, ad latera subcostatis. . Long. 1 lin. Hab.—Western Australia. Australian Phytophaga. 389 Head deeply punctured, glabrous; antennz fulvous, the inner angles of the five upper joints alone being stained with piceous; thorax as broad at its base as the elytra ; sides obliquely converging and slightly rounded from base to apex, surface coarsely punctured, substrigose, rugose-punctate on the sides ; basal lobe slightly reflexed ; basal margin narrowly edged with piceous; scutellum pale, brownish-fulvous ; elytra broadly oblong, scarcely narrowed posteriorly ; surface of each elytron with eleven rows of large round shallow punctures, the first row short 5, interspaces smooth, nearly flat on the inner disc, convex towards the apex, more strongly raised and almost costate near the outer margin. This species strongly resembles Oryptocephalus minutus and its allies, in habit and coloration. Ditropidus dimidiatus. Subquadratus, rufus, nitidus, antennis extrorsum, pedi- bus intermedi, tarsisque anticis rufo-piceis, scutello, elytris, metasterno, abdomine, pedibusque posticis nigris. Kone: Ty lin. Hab.—Northern Australia, Brisbane ? Head closely punctured, rugose-punctate between the eyes, the latter distant, reniform, front impressed with a faint longitudinal groove; thorax as broad at its base as the elytra, sides rounded and converging from base to apex; upper surface distinctly and somewhat closely punctured; elytra slightly longer than broad, slightly narrowed posteriorly ; surface strongly punctate-striate, interspaces flat, impunctate, three outer interspaces thickened, subcostate. Ditropidus biplagiatus. Subquadrato-ovatus, postice paullo angustatus, niger, nitidus, antennis extrorsum piceis, basi labroque rufo-tes- taceis, thorace rufo, tenuiter nigro marginato; elytris tenuiter punctato-striatis, utrinque plaga magna rufa, discum fere amplectente, ornatis ; femoribus obscure rufo- piceis aut nigris. 390 Mr. J. S. Baly on Long. 14 lin. Hab.—Moreton Bay; North-West Australia. Head broad, flat, impressed with moderately large but shallow punctures; clypeus and lower portion of face slightly wrinkled; middle of face with a shallow longitudinal groove ; four or five outer jomts of an- tenn piceous; eyes distant, uniform; thorax nearly as broad at the base as the elytra, sides obliquely narrowed from base to apex, slightly rounded near the apex; disc smooth, rather closely covered with shallow punctures; elytra about a third longer than broad, slightly narrowed posteriorly, each elytron with eleven rows of moderately impressed oblong punctures, the first short; interspaces distantly and minutely punctured, plane on the anterior portion of the middle disc, faintly raised on the front half of the inner disc, shghtly convex on the hinder half, those on the outer disc near the outer margin raised and convex for their whole length: on each elytron is a large subtrigonate rufous patch occupying the middle of the disc. Ditropidus fasciatus. Breviter oblongus, obscure veneo-niger, nitidus, albo- sericeus, antennis basi fulvis, dorso piceis, articulis quinque ultimis modice dilatatis, nigris ; thorace elytris- que obscure cupreis, illo subfortiter punctato, albo-sericeo ; his glabris, tenuiter punctato-striatis, interstitiis planis, iis ad latera leviter convexis ; utrisque fascia lata obliqua, fulva, a humero fere ad suturam extensa ornatis. Long. 14-1? ln. Hab.—Champion Bay. Head somewhat closely punctured, vertex cupreous, labrum and six basal joints of antennz obscure fulvous, the latter stained above with piceous; thorax twice as broad as long, sides rounded and converging from base to apex, slightly sinuate just before the hinder angle, the latter somewhat compressed, and produced slightly backwards ; basal lobe feebly notched, obsoletely reflexed ; surface on either side the basal lobe and extending to the hinder angles distinctly depressed (this depression causes the disc of the thorax to appear unusually convex) ; Australian Phytophaga. 391 surface distinctly punctured, the puncturing rather dis- tant on the disc, closer on the sides; scutellum obovate, its apex obtuse; elytra not broader at their base than the thorax, twice its length, finely but distinctly punc- tate-striate; interspaces plane; on the outer margin the two outer striz are sulcate, and their imterspaces convex. Genus LACHNABOTHRA, Saunders. Trans. Ent. Soc. Lond., vol. iv. p. 294. The genus Lachnabothra was formed by Mr. W. W. Saunders in 1847, on a single female example in the cabinet of the Rev. F. W. Hope; this insect being figured and described by him as Lachnabothra Hopet ; the Suffrian, who subsequently (in 1859) monographed Australian Cryptocephalide, sank Lachnabothra, and placed Mr. Saunders’ species in the fourth section of Erichson’s genus Cadmus ; both authors appear to have known the ¢? only, but more than twenty years previously a ¢ specimen belonging to the genus, was described and figured by Dr. Klug (Ent. Mon. p. 159, tab. vi. fig. 9, 1824) under the name of Chlamys (?) braceata ; Klug, who was unacquainted with the locality of his insect, pointed out its affinity to the Cryptocephalide, thus indicating its true position. For some years’ after the publication of Mr. Saunders’ and Dr. Suffrian’s works, the species were very rare in cabinets, but latterly, owing to the exertions of Messrs. Waterhouse, Wilson, and Odewahn, in South Australia, and of various other collectors in the Western, and other parts of the con- tinent, many specimens of both sexes of species be- longing to the genus have become known to us. I myself, possess no less than eight distinct forms (the descriptions of which I have given below), im my own collection. The characters of the males, as distinguished from the females, are as follows :— Antenne much longer than the body; the ultimate joint compressed, generally broader than the penultimate. Thorax more or less gibbose, the gibbosity divided into two distinct protuberances. 392 Mr. J. 8. Baly on Hinder thighs thickened ; basal joint of anterior tarsus usually dilated. The other characters are as in the ? ; both sexes may be known from the species of the genus Cadmus, by the sculpture and dense metallic pubescence of the thorax ; the sculpture of the elytra is also peculiar and constant in all the species known to me. Ihave not been able satisfactorily to identify Dr. Klug’s insect with any of the species described below ; it is, how- ever, very closely allied to L. Waterhovsei, and may pos- sibly prove to be the same insect. Lachnabothra Hoper, Saunders. Trans. Ent. Soc. vol. iv. p. 295, pl. xv. fig. 5. Cadmus Hopii, Suffrian, Lin. Ent., vol. xin. p. 89. Subquadrato-oblonga, pallide rufo-picea, pilis pallide aureis vestita, thorace dense aureo-sericeo ; elytris ru- gosis, apice elevato-vittatis, disco interno tuberculis oblongis nonnullis, disco externo cretis irregularibus, inter se confluentibus et rete laxum formaniibus, in- structis; pedibus antennisque obscure fulvis. Mas. Thoracis disco bituberculato; antennarum articulo ultimo dimidio apicali nigro, penultimo distincte latiori, obcuneiformi, apice ipso angulato; tarsorum anticorum articulo primo paullo dilatato, oblongo, basi attenuato, apice truncato. Long. 2-23 lin. Hab.—South Australia, Melbourne, Adelaide. Head clothed with adpressed golden hairs; face im- pressed with a longitudinal groove, which extends from the vertex to the apex of the clypeus; surface of face deeply punctured ; clypeus transverse, triangular, sides of the triangle shghtly convex, anterior border slightly concave ; hinder surface punctured, clothed with adpressed hairs, anterior portion smooth, impunctate, glabrous ; la- brum often stained with piceous ; jaws piceous; thorax as broad at its base as the thorax; sides diverging at the base, thence obliquely converging to the apex in the ¢, regularly rounded in the ¢, the apex itself quickly Australian Phytophaga. 393 rounded ; upper surface convex, covered with numerous shallow pits or excavations, anterior half of disc closely punctured, subrugose, hinder half finely and subremotely punctate; whole surface densely clothed with silky golden hairs, which radiate from the excavated pits ; on either side the centre of the disc, in the ¢, is a broad obtuse protuberance; scutellum densely clothed with adpressed golden hairs; elytra sparingly clothed with golden hairs, rugose-punctate, hinder third with seven or eight raised, broad, longitudinal ridges ; inner disc with five oblong, longitudinally placed tubercles, which are scattered over the anterior two-thirds of its surface; outer disc coarsely rugose; on its surface are several irregularly raised reticulations, which enclose large, ill-defined, irregular spaces; these ridges are less defined in the ¢ than in the other sex ; abdomen and legs clothed with pale golden hairs. Lachnabothra Brewert. Subquadrato-oblonga, rufo-picea, clypeo nigro-piceo, pube adpressa aurea vestita, thorace dense aureo-sericeo ; elytris rugosis, disco interno tuberculis elongatis, 11s prope apicem incrassatis, instructo, disco externi apice elevato- vittato, antice irregulariter elevato-reticulato. Mas. Thoracis disco leviter gibboso, indistincte bitu- berculato, antennarum articulo ultimo (basi excepta) nigro, penultimo latiori, a basi apicem versus dilatato, apice angulato, acuto; femoribus posticis sat valde in- crassatis; tarsorum anticorum articulo basali modice dilatato. Long. 2-24 lin. Hab.—Albany, King George’s Sound’; Swan River. Thorax as wide at the base as the elytra, sides rounded and slightly diverging at the extreme base, thence rounded and obliquely converging to the apex; disc excavated here and there into shallow pits (about fourteen in number); surface densely clothed with golden sericeous hairs, which radiate from the centres of the shallow ex- cavations; centre of the disc in the ¢ slightly gibbose, the gibbosity transverse, elevated on either side into a small illdefined tubercle ; elytra coarsely rugose-punctate, 394 Mr. J. S. Baly on inner disc with a number of elongated and oblong tuber- osities, several of these placed near the apex are greatly thickened and enlarged ; basal half of outer disc covered with irregular raised reticulations, the apical half elevate- vittate ; running down the middie of each elytron, and separating the inner from the outer disc, is a very irre- gular raised line, which here and there sends off short spurs on either side. This species is closely allied to L. Hope, and is possi- bly a local form of that species ; both sexes may be known by the much stouter and broader apical tuberosities of the inner disc; the ¢ also has the hinder thighs more strongly thickened. Lachnabothra integra, Suffr., MS. Oblongo-quadrata, rufo-picea, pilis adpressis pallide aureis vestita, antennis, tibiis tarsisque obscure fulvis, femoribus posterioribus intus nigro-piceo maculatis ; tho- race dense pallido aureo-sericeo ; elytris rugosis, disco interno tuberculis oblongis, disco exteriori lineis elevatis longitudinalibus, instructis. Mas. Thorace dorso leviter gibboso, gibbo medio lon- gitudinaliter sulcato; antennarum articulo ultimo (basi excepta) nigro, penultimo vix latiori, compresso, a_ basi apicem versus leviter ampliato, apice ipso angulato ; femoribus posticis modice incrassatis, tarsorum pantico- rum articulo basali leviter dilatato, oblongo, apice truncato. Long. 2-22 lin. Hab.—South Australia, Adelaide, Gawlertown. Thorax similar in form to that of L. Hopei, disc in the 6 slightly gibbose, the gibbosity divided by a distinct longitudinal groove; pubescence clothing the surface pale golden sericeous ; basal margin narrowly edged with black ; elytra rugose-punctate, inner disc with seven or eight oblong longitudinal protuberances, placed irregu- larly on the surface from base to apex; at the base near the scutellum is also a longitudinal ridge, which extends backwards for rather more than a fourth of the elytron; outer disc coarsely rugose; on its surface are two some- what irregular longitudinal ridges, the first commencing a short distance within, the second immediately without Australian Phytophaga. 395 the humeral callus; the first of these terminates at the commencement of the last fifth of the elytron, the second is slightly longer, and approaches somewhat nearer to the apex; in addition, on the hinder third, are four or five coarse longitudinal ridges. . The form of the thorax will separate the ¢ of the insect before us from the same sex of any of the hitherto known species. Lachnabothra Wilsont, Suffr., MS. Subquadrato-oblonga, nigro-picea, pilis argenteo-aureis adpressis vestita, tibiis basi antennisque obscure fulvis ; thorace dense argenteo-aureo sericeo; elytris profunde rugoso-punctatis ; prope marginem lateralem irregulari- ter verrucosis, castaneis, tuberculis plurimis oblongis magnis, nigro-piceis, nitidis, instructis. Mas. Thoracis disco utrinque tuberculo nitido in- structo; antennarum articulo ultimo penultimo paullo latiori, dimidio apicali nigro; femoribus modice incras- satis ; tarsorum anticorum articulo basali paullo ampliato, oblongo-ovato, apice truncato, Long. 2-24 lin. Hab.—South Australia, Gawlertown, Mr. Odewahn ; Adelaide, Messrs. Wilson and Waterhouse. Thorax as broad at its base as the elytra, sides rounded at the base, thence converging to the apex in the 4d, lateral margin slightly sinuate just before the middle; in the opposite sex the sides are rounded and diverging at the base, slightly flattened from thence to beyond the middle, then rounded and converging to the apex; disc irregularly pitted, but less distinctly so than in L. Hopet, densely clothed with pale metallic sericeous hairs, which radiate as usual from the centres of the various depres- sions ; disc in the ¢ elevated on either side of its middle into a distinct gibbosity, the apex of which is crowned with a shining tubercle; immediately behind each gib- bosity is an ill-defined transverse excavation, which runs inwards nearly to the medial line of the thorax, leaving the latter only in the form of a narrow longitudinal ridge ; elytra castaneous, coarsely and deeply rugose-punctate, irregularly verrucose near the lateral margin, covered with large shining, oblong, nigro-piceous tuberosities ; those on the anterior portion of the outer disc irregular. 396 . Mr. J.S8. Baly on This is one of the best defined species of the genus, it may be at once known by the peculiar sculpturing of the elytra. Lachnabothra Waterhouse. Subquadrato-oblonga, pallide picea, aureo-sericea; an- tennis tarsisque fulvis; thorace hic illic excavato, dense aureo-sericeo; elytris nigro-piceis, rude rugoso-punctatis, basi et apice elevato-vittatis, disco interno tuberculis oblongis magnis instructo, disco externo laxe elevato- reticulato ; vittis tuberculisque rufo-piceis. Mas. Thoracis disco utrinque in gibbum validum subconicum elevato; antennarum articulo ultimo apice nigro, penultimo latiori, apice obtuse angulato ; femoribus posticis modice incrassatis ; tarsorum anticorum articulo basali non dilatato, secundo zequilato. Long. 2 lin. Hab.—South Australia, Adelaide. Thorax as wide at the base as the elytra, sides rounded and diverging at the extreme base, nearly straight and parallel in the middle, thence rounded and converging to the apex; surface excavated into a number of shallow pits, densely clothed with adpressed golden hairs, which radiate from the centres of the pits; in the ¢ (the only sex known to me) the disc is strongly elevated on either side into a large subconical protuberance ; elytra spar- ingly clothed with adpressed hairs, very coarsely rugose- punctate, the base with three short, but strongly raised longitudinal ridges, which extend backwards rather more than one-third the length of the elytron; they are placed, one near the suture commencing with a thickened base, at the apex of the scutellum, another half-way between the suture and the humeral callus, and a third a short distance within the latter; in the interspace between the first and second ridge, is seen a small tubercle, and be- tween the second and third is a slightly raised, ill-defined, longitudinal line; on the hinder two-thirds of the inner disc are placed seven or eight large oblong tuberosities ; outer disc very irregularly and coarsely elevate-reticulate, its hinder portion covered with raised longitudinal vitte ; one of these, the second from the suture, is continued upwards along the disc as far as the apex of the humeral callus; hinder thighs moderately thickened. Australian Phytophaga. 397 This species, of which I have seen three specimens (all males), varies like most of the others, in coloration; usually it is dark piceous, the raised markings on the elytra being pale rufo-piceous, the legs and abdomen, and the upper part of the head are also more or less rufous, and stained with dark piceous; the antennz. (the apical joints excepted) and tarsi are pale fulvous, the basal joint of the latter being sometimes stained with fuscous. L. Waterhousei may be known by the undilated basal joint of the anterior tarsus, by the strongly raised tuberosities of the thorax, and by the moderately dilated hinder thighs; these characters taken together, will at once separate it from its congeners. Lachnabothra Saundersi. Subquadrato-oblonga, rufo-picea, thorace basi elytris distincte latiori, dense aureo-sericeo, elytris pube aureo minus dense vestitis; rugosis, disco interiori tuberculis oblongis nonnullis (circa 7)instructo, disco exteriori rude rugoso, elevato-reticulato, ad apicem elevato-vittato. Mas. Thoracis disco leviter bituberculato; antenna- rum articulo apicali (basi excepta) nigro, penultimo distincte latiori, apice oblique truncato ; femoribus valde incrassatis; tarsorum anticorum articulo basali late ampliato, semi-ovato, lateribus ineequalibus. Long. 2} lin. Hab.—Australia. Thorax distinctly broader at the base than the elytra, sides slightly diverging at the base, thence rounded and converging to the apex, hinder angles armed with a small obtuse tooth, lateral margin near the base irregu- larly crenulate ; surface finely rugose-punctate ; on either side the medial line in the ¢ is a large but slightly elevated gibbosity, the apex of which is crowned by a small shining tubercle; elytra rugose-punctate, whole surface clothed with adpressed golden hairs; inner disc with a number of large oblong tubercles, placed irregu- larly from base to apex of the elytron; outer disc coarsely rugose, the interspaces thickened and forming small irregular reticulations and rugosities over the whole sur- face; on the apical third are four or five ill-defined (owing to the general rugosity of the surface) raised longitudinal vittee. . TRANS. ENT. soc. 1871.—ParT 111. (AUGUST.) EE 398 Mr. J. 8. Baly on Lachnabothra distincta. Subquadrata, oblonga, rufo-picea, supra nigro-picea, aureo-sericea, antennis fulvis; thorace basi elytris paullo latiori, dense aureo-sericeo; disco hic illic leviter exca- vato; elytris rugosis, disco interiori tuberculis nonnullis, disco exteriori vittis elevatis, 1is ante medium irregulariter flexuosis, instructis. Mas. 'Thoracis disco utrinque in gibbum validum ele- vato ; antennarum articulo ultimo, a basi apicem versus paullo dilatato, penultimo paullo latiori, apice rotun- dato, dimidio apicali nigro; femoribus posticis sat valde incrassatis ; tarsorum anticorum articulo basali sat late dilatato, semi-ovato, lateribus inzequalibus. Long. 23 lin. Hab.—North-West Australia. Thorax very slightly broader at the base than the elytra; sides rounded at the base, thence obliquely rounded and converging to the apex; hinder half of lateral border finely crenulate ; surface rugose-punctate, excavated here and there into shallow pits; clothed with adpressed golden hairs, which radiate from the centres of the shallow ex- cavations; in the 3 (the only sex known to me) the middle of the disc is raised on either side into a strong subconical protuberance, divided from its fellow in the medial line, by a longitudinal depression; elytra rugose, also clothed with adpressed golden hairs; inner disc with six or seven oblong tubercles, placed irregularly from base to apex; outer disc coarsely rugose, subverru- cose near the outer border ; commencing a short distance within the humeral callus, is an elevated ridge, which, irregularly flexuous about the middle of its course, runs backwards for four-fifths the length of the elytron; im- mediately external to the humeral callus, and connected at its base to the callus itself, 1s a second, much shorter than the first; on the hinder fifth of the outer disc, are placed five or six round longitudinal vittee. This male insect may easily be separated from the same sex of L. Saundersi (the ? of which is also unknown to me) by its more strongly raised thorax, as well as by the less dilated basal joint of the anterior tarsus. Australian Phytophaga. 399 Lachnabothra Duboulat. Subquadrato-oblonga, picea, aut rufo-picea, pube pal- lide argenteo-aureis vestita; antennis, tibiis tarsisque fulvis ; thorace dense pallide aureo-sericeo ; elytris LUgOSIS ; pilis argenteo-aureis vestitis, tuberculis elongatis et ob- longis disco interno positis, vittaque elevata irregulari hic illic ramulum emittente, a callo humerale fere ad apicem extensa instructis, disco exteriori apice elevato- vittato, antice rude et irregulariter elevato-reticulato. Mas. Thoracis disco utrinque leviter gibboso, gibbis subconicis; antennarum articulo ultimo non dilatato, penultimo zquilato; femoribus posticis sat valde incras- satis; tarsorum anticorum articulo basali sat dilatato, semi-ovato. Long. 24-23 lin. Hab.—Western Australia; collected by Mr. Duboulay. Thorax as wide at the base as the thorax, sides rounded and slightly-diverging at the base, thence obliquely con- verging and slightly rounded to the apex in the d, more regularly rounded in the other sex; surface closely rugose, densely clothed with pale metallic adpressed hairs; on either side the disc in the ¢ is a large, broad, but slightly raised obtuse protuberance ; elytra coarsely rugose, rather densely clothed, when freshly disclosed, with adpressed hairs; inner disc with a number of strongly raised longitudinal tuberosities, compressed and linear at the base, thicker and oblong towards the apex ; on the middle portion of the surface of each elytron, separating the inner from the outer disc, is an irregular raised longitudinal line ; outer disc very coarsely elevate- reticulate in front, elevate-vittate on its hinder portion towards the apex; these vittz and protuberances are usually stained with black, but are more rarely conco- lorous with the disc of the elytron ; thighs stained with black, strongly dilated. The species before us, collected in some abundance by Mr. Duboulay, most closely resembles (especially when slightly rubbed) L. Wilsoni; both sexes may be separated from that species by the different sculpture of the elytra; the ¢ may be also known by the slender apical joint of the antenne, as well as by the much less strongly elevated gibbosities of the thorax. EE2 400 Mr. J. 8S. Baly on Phytophaga. Fam. CHRYSOMELIDA. Genus STRUMATOPHYMA, 0. g. Corpus postice attenuatum, apterum ; caput exsertum, breve; antenne filiformes, corpore dimidio longiores; oculis prominulis, elongatis ; palpis maxillaribus articulo ultimo penultimo equilato, apice truncato ; thorax trans- versus dorso preesertim ad latera, excavatus; elytra oblonga, postice attenuata, sutura intime convexa, dorso tuberculata, tuberculis seriatim dispositis; pedes sim- plices; wnguiculis inermibus, basi leviter incrassatis ; acetabula antica incompleta. Type Chalcolampra verrucosa, Clark. Chaleolampra undulatipennis, Clark, from Western Australia, also belongs to this genus. Strumatophyma is separated from Chalcolampra by the apterous body, soldered elytra, and simple claws. Genus SPHZROLINA, n. g. Corpus rotundato-ovatum, semiglobosum; caput ex- sertum, breve; antennis brevibus, capite cum thorace vix eequalibus, articulis quinque ultimis compressis, distincte dilatatis, clavam elongatam formantibus ; oculis elongatis, subprominulis; palpis maxillaribus articulo ultimo penultimo vix sequilato, breviter ovato, apice truncato ; thoraw transversus; elytra thorace multo latiora apice late rotundata, tumida inordinatim punctata ; pedes simplices; unguiculis muticis; acetabula antica incom- pleta. Type Lina Rajah, Guérin; India. The short antenne distinguish the present genus from Chrysomela; it also differs in the form of the thorax: from Lina it may be known by the shorter form, and by the swollen elytra. Lina Templetoni, Baly, must also be placed in this genus. ( 401 ) XIV. Descriptions of five new species, and a new genus, of Diurnal Lepidoptera, from Shanghai. By A. G. Burizr, F.L.S., &c. {Read 5th June, 1871.] THE species here described were recently sent home by Mr. W.B.Pryer. They are very interesting; one of them being a representative of an exclusively New World group of butterflies, and another very similar to a common British Argynnis ; m the same Collection is a curious little Terias, which I believe to be the 7’. mandarinus of De L’Orza; it may, however be new, since I have not recently had an opportunity of consulting his description. Fam. NYMPHALIDA, Sub.-fam. SATY RIN A, Bates. PALEHONYMPHA, gen. n. Affinissimum Huptychie (Sect. Neonympha) differt alis dense pilosis; anticis striga lata, opaca, masculina, obli- qua; angulo antico cellule discoidalis haud porrecto; palpis articulo ultimo longiore. Nearly allied to Huptychia, which it much resembles in markings, but with the oblique male streak (not pre- sent in any known Huptychia, but represented in L. vesta by a scalloped embossed line) ; the anterior angle of the discoidal cell obliquely cut off, and therefore not project- ing as in Huptychia ; the palpi with the last joint longer, the wings clothed above with long hairs; it differs from Paramecera (Mexico), with which it agrees in the last- mentioned character, and in the oblique male streak, in the different form of the front-wing cell, the shape and marking of the wings, and the length of the palpi. Typical species PALZONYMPHA OPALINA. Paleonympha opalina, sp. n. Ale supra fusce, anticee ocello uno apicali albo-pupil- lato lineisque duabus marginalibus, nigris; postica ocellis quatuor nigris ; primo apicali indistincto, secundo parvo inconspicuo, tertio magno, distincto, bipupillato, 402 Mr. A. G. Butler on quarto anali parvo, inconspicuo; ale subtus cineree, striis duabus mediis equidistantibus, nebula maculari ocellos ferente lineisque duabus submarginalibus, olivaceis ; linea marginali tenuissima, nigra; antice ocellis tribus primo apicali nigro, argenteo-bipupillato, flavo late cincto, aliis ovalibus geminatis argenteis ; postice: stria externa apud costam profunde sinuata ; ocellis quinque, primo, quarto et quinto nigris argenteo-pupillatis flavo-cinctis, aliis ovalibus argenteis geminatis olivaceo-cinctis. Exp. alar. une. 2, lin. 2. I have called it opalina, because of the silvery-opaline spots on the under-surface; these occur on a great many of the species Huptychia: the species is most like H. Antonoé of Cramer, but is much smaller. Genus Letuz, Hubner. 2 Lethe satyrina, sp. n. Ale ovali-triangulares, supra olivaceo-fusce ; margine albido, a stria submarginali fusca intersecto ; cilis fuscis ; antic apice late dilutiore, ocellis duobus mconspicuis fuscis albo-pupillatis; posticee ocellis quinque, secundo indistincto maximo, primo, quarto et quinto magnis, omnibus (secundo excepto) nigris flavo-albido cinctis albo-pupillatis. Ale subtus fere velut supra; anticee stria postcellulari obliqua albida; ocellis supernis, nigris distinctis ; posticee ocellis sex, primo et quinto maximis, ultimo geminato, omnibus nigris albo-pupillatis flavo- cinctis, fusco circumcinctis, lilacmo zonatis ; stris duabus mediis irregularibus lilacino-fuscosis. Exp. alar. unc. 2, lin. 6. Most nearly allied to LZ. Verma, and resembling the species of Satyrus, in the shape of the wings and distribu- tion of the ocelli. Genus Yrutuima, Hiibner. Yphthima Zodia, sp. nu. Ale supra fusce, anticze ocello mediocri nigro bipu- pillato, flavo-cincto; posticee ocellis tribus subanalibus, tertio ad angulum ani minimo, nigris albo-pupillatis, flavo-cinctis ; alee subtus cinereo-albide, fusco reticulate ; Diurnal Lepidoptera. 403 antice striis duabus mediis male conspicuis, externa cum stria submarginali simili continua, fuscis ; ocello superno majori; posticee fascia lata olivacea, undulata; ocellis sex minutis, duobus subapicalibus, duobus discali-analibus, duobus analibus contiguis, nigris, albo-pupillatis, flavo- cinctis. Exp. alar. unc. 1, lin. 7. Alhed to Y. Lisandra and Y. Argus, but differing from all the known species, in the broad central fuscous band on the under-surface of the hind-wings. Sub-fam. NYMPHALINAK. Genus Neptis. Neptis Pryeri, sp. n. Ale supra nigra, ciliis albis; antics vitta discoidali quinque maculari, serie macularum decem bisinuata dis- cali et altera, a fascia media nigra intersecta, sex maculari, submarginali, apicem haud attingente, albis; posticze fascia media a venis interrupta; stria sex-maculari discali transversa, albis ; corpus cinereum ; alee subtus albican- tibus ; anticze maculis costali-discalibus, plagisque disco- cellulari, apicali et marginali, brunneis; postice basi nigro-maculata ; plaga costali cellulum partim cingente, fascia media ad costam attingente, venis discalibus et area marginali (lunulos subseptem gerente) brunneis ; corpus albidum. Exp. alar. unc. 2, lin. 5. Not nearly allied to any species that I have seen. Genus Araynnis, Fabricius. _Argynnis vorax, sp. 0. Affinis A. Adippe, differt alis anticis costa multo lon- giore, margine externo magis arcuato, posticis margine interno longiore, omnibus supra maculis submarginalibus fulvis angustioribus; subtus characteribus discoideis minus conspicuis; anticee maculis discalibus majoribus ; posticee pallidiores, area basali viridiore ; maculis argenteis vix nigro marginatis ; serie ocellorum minus angulata; lunulis submarginalibus viridibus. Exp. alar. unc. 3, lin. 2. Nearly allied to A. Adippe, but more like A. Paphia in form. - ( 405 ) XV. On some black species of Cantharis with red heads and filiform antenne. By Cuas. O. WATERHOUSE. [Read 3rd July, 1871.) Havine lately required a name for a species of black Cantharis, belonging to the group with the head red, and with filiform antenne, I have gathered together all the specimens at my disposal, with a view of identifying them. I find among them five species, and as only one of these has been at all properly described, I have ven- tured to write out descriptions of them all. I have yet one or two which cannot well be placed with these five, but as the species are so close, | thought it better not to describe from single specimens. Cantharis nepalensis, Hope. Lytta Nepalensis, Hope, Gray’s Zool. Miscel. p. 32. Ater; capite rufo, antennis filiformibus, tibiis anticis non hirsutis ; elytris apices versus latioribus. Long. 63-114 lin. Closely allied to C. ruficeps of Illiger, but is to be dis- tinguished from it by the deeper red colouring, and strong punctuation of the head, and by the elytra being distinctly broader towards the apex. The head is dull dark red, not very thickly, but some- what strongly, punctured ; the clypeus is almost entirely black, as are also the labrum and other parts of the mouth. The antenne are filiform, very slightly pubes- cent; the first joint short, the second very short, the third the longest, the fourth to seventh equal, the eighth to tenth rather shorter, the eleventh a little longer than the seventh. The thorax is subquadrate (contracted in front) , thickly and distinctly punctured, less closely and rather more strongly on the disc; the fore-part is slightly im- pressed on each side, there is a faint longitudinal line on the disc, and a deep fovea in the centre of the posterior margin. The elytra somewhat broader towards the apex, where they diverge, each rounded at the apex, the whole TRANS. ENT. soc. 1871.—ParT II. (AUGUST.) FF 406 Mr. Chas. O. Waterhouse on surface distinctly punctured. The underside of the insect is entirely black, clothed with long black pubescence ; legs simple; the anterior tibiz not dilated, nor clothed with long hair. Hab.—Nepal (Hardwicke). Brit. Mus. C. hirtipes, sp. n. Very closely allied to OC. nepalensis, but larger and more cylindrical. The antenne are similar. The head is dull, dark red, with long black hairs at the back, very thickly and strongly punctured, with the exception of an ovate spot at the base of each antenne, which is smooth, impressed in the middle, and only sparingly punctured. Thorax very thickly and strongly punctured, rounded in front, clothed at the sides with long black hairs. Hlytra elongate, distinctly punctured, not broader towards the apex, where they diverge, and somewhat acuminate, the extreme apex of each rounded. Underside entirely black, with moderately long pubescence; the legs simple, the four posterior tibie thickly clothed with somewhat long black pubescence. Long. 124-13} lin. Hab.—Allahabad (Bowring). Brit. Mus. C. tibialis, sp. nu. Ater ; capite rufo-testaceo ; antennis filiformibus ; tibtis anticis apicem versus latioribus | extus dense hirsutis (fo) ]; elytrorum sutura marginibusque tenuissime albo-pubescen- tibus. Long. 7-113 lin. This species most closely resembles C. rujficeps of Illiger, but is distinguished from it by the narrow margin of white pubescence to the elytra, and by the somewhat broad and hairy anterior tibiz in the male. 3. The head is reddish-yellow, and (with the excep- tion of a smooth raised spot at the base of each antenna (perhaps only a male character) , somewhat sparingly and not very strongly punctured ; the anterior margin of the clypeus is fuscous, as are also the labrum and other parts of the mouth. The antenne are filiform, the third to some black species of Cantharis. 407 sixth joints each notched for the reception of the follow- ing joints: the basal two joints with longish black pubes- cence, the second joint is a little shorter than the first, and more slender; the third is about equal to the fourth and fifth joints together; the fourth, fifth, and sixth joints are short, of nearly equal length; the seventh to the eleventh gradually increasing. The thorax is sub- quadrate (abruptly contracted in front), thickly, evenly, distinctly, but not very strongly, punctured; the fore- part is slightly impressed on each side, and there is a large deep fovea in the centre of the posterior margin. The elytra are scarcely broader at the apex than at the base, each elytron rounded at the apex, where they diverge; the apex and lateral margins fringed with white pubescence, the suture also very slightly so. The mesothoracic epimera, the sides of the metathorax, and the margins of the abdominal segments, are also more or less clothed with whitish pubescence. The an- terior tibiz are thickly set on the outside with long black hair, the innerside of the anterior femora and tibiz are clothed with yellowish pubescence. Q. Antenne with the third to sixth joints less strongly notched; the anterior tibiz destitute of long black hair ; the forehead without any well-defined smooth spot at the base of the antenne. Hab.—China. Brit. Mus. C. assamensis, sp. n. It is with some hesitation that I venture to give the insect which I have received with the above manuscript name, the place of a species. It differs, however, from C. tibialis in having the head distinctly more thickly punctured, and the mesothoracic epimera are black (¢). Long. 11} lin. Hab.—‘ Assam.” Brit. Mus. Two specimens ( ? ) from the Island Formosa, from Mr. Bowring’s collection, most closely resemble the above, but appear to have the elytra relatively longer ; the head more arched behind, somewhat closely punctured in front, but sparingly on the crown. The antenna are as in the 9 of O. tibialis. The underside is almost entirely black. The legs are simple, the anterior tibie not hirsute. RF2 408 Mr. Chas. O. Waterhouse on Cantharis. C. ruficeps, Iliger. Q. Lytta ruficeps, Il. (Wiedmann, Archiv. I. pt. 3, p. 140, 1800). $. Lytta plumicornis, Castelnau? (Hist. Nat. des In- sectes, II. p. 274, 1840). “ Atra unicolor, capite solo toto rufo, antennis totis nigris, elytris obtuse acuminatis.” ?. Totally black, except the head which is reddish- yellow ; the clypeus is yellowish, with a transverse black band, the labrum has a notch in the front margin which is yellowish, the other parts of the mouth are more or less fuscous. The head is polished, sparingly but dis- tinctly punctured. The thorax is subquadrate, slightly broader in front than behind, abruptly contracted and rounded in front, the fore-part is slightly impressed on each side, the whole surface is thickly and distinctly punctured, the disc has a lightly impressed longitudinal line, which runs into a deep fovea at the posterior mar- gin. The elytra are parallel, not narrower at the base than at the apex, where they diverge, and are each rounded. The antenne are four-fifths the length of the elytra, filiform, the second joint two-thirds the length of the first, the third a little longer than the first, the fourth two-thirds the length of the third; the remaining joints gradually increasing in length, and tapering. Legs simple. Tarsi beneath, spongy, fuscous. The meta- sternum and abdomen clothed with short grey-black pubescence. The ¢ israther more slender than the ?; the antennz are longer (very nearly as long as the elytra) , the second to eighth joits furnished with long hair on the lower (or inner) side; the anterior tibie are furnished with long black hairs; the innerside of the femora and tibiw clothed with golden pubescence. Long. 64-104 lin. Hab.—Java, Borneo, Sumatra. Brit. Mus. Good specimens of this insect appear in some lights to have a reddish-brown pubescence, but a slight alteration of the position makes it appear greyish. The male agrees with Castelnau’s description of Lytta plumicornis from China, and in the national collection there is a specimen labelled ‘ North China’ which I can- not satisfactorily separate from the Javanese specimens. ( 409 ) XVI. Apercu statistique sur les Névropteres Odonates. Par le Baron E. pe Serys-Lonacuamps, Mem. Hon. Soc. Ent. Lond. [Lu 8me Juillet, 1871.) Av moment oii je viens de publier une nouvelle partie du Synopsis des Odonates, celui de la sous-famille des Cor- dulines, je crois qu’il y a un certain intérét 4 jeter un coup d’ceil statistique sur les genres et les espéces connus jusquw’ici. Pour arriver au chiffre total j’ai récapitulé :— 1,—les espéces décrites dans mes différents synopsis et leurs suppléments. 2,—les espéces a ajouter aux mémes groupes: les unes sont décrites dans différentes publications; les autres sont inédites, mais je posséde leur signalement. 3,—les espéces des groupes que je n’ai pas encore publiés. Ce sont les sous-familles des Libellulines et des Aischnines, et parmi les Agrionines les deux grands genres Agrion, F., et Telebasis, De Selys. Pour ces groupes dont je n’ai pas terminé l’etude, on comprend que les chiffres résultant du classement actuel de ma collection ne sont pas tout a fait absolus. C’est pour ce motif que je ne détaille les sous-genres des deux grands genres Agrion et Telebasis. La partie embarrassante est celle de la sous-famille des Libellulines. En 1868 M. F. Brauer de Vienne a publié son ‘ Verzeichniss der bis jetzt bekannten Neurop- teren im Sinne Linné’s’, suivi de son ‘ Zweiter Abschnitt’, dans lequel les genres de Libellulines, au nombre de 40 (ou 41 avec Zygonyx) sont caractérisés, et les noms des espéces qui y appartiennent cités au nombre de 361. Pour compléter mon Apercu, en ce qui concerne les Libellulines, le mieux m’a semblé étre de ne rien changer a Vordre adopté par M. Brauer, qui a rendu un grand service a la science en publiant ce travail. Je prends sa classification et ses chiffres tels qu’il les donne, en faisant observer bien entendu, que je me reserve d’examiner plus tard sa classification et ses groupes. J’ajoute que le nombre des espéces qu'il cite est de 361, tandis que je crois en connaitre environ 100 de plus, parmi lesquelles le genre Neophlebia que j’ai décrit et figuré dans le voyage de M. Pollen. TRANS. ENT. soc. 1871.—PART III. (AUGUST.) 410 Et nous sommes Baron EH. de Selys-Longchamps sur Dans le résumé par sous-genres, que je donne plus bas, J arrive aux résultats suivants. LIBELLULINES CorpuLines . 83 GOMPHINES . 172 AMSCHNINES . 108 CaLopreryGcines 160 AGRIONINES . 3793 1857 33 3) 3) 3) a) 461 espéces, en 41 sous-genres. 3) 11 PP) 3) 39 3) 3) 9 3) 3) 31 3) ee 190 évidemment bien éloignés de con- naitre tous les Odonates, excepté pour les espéces d’Hurope, qui sont au nombre de 100, et qui ne me semblent guére susceptibles de recevoir une augmenta- tion importante. espéces. Dans les Synopsis et ailleurs j’ai décrit environ 600 Il y en a donc encore plus de 700 que je n’ai pas étudiées en détail, mais parmi elles se trouvent beau- coup d’espéces dont de bonnes descriptions ont été publiges par MM. Rambur, Ubhler, et Brauer, et par mes honorables collégues et amis MM. Hagen et Mclachlan. Famille I. LIBELLULIDA. Sous-fam. I. Lipen.uina. Genres et sous-genres. Espéces. | Genres et sous-genres. Espéces. 1. Zyxomma, Ramb..............0 1 | 24. Nannothemis, Brauer..........- 6 2. Tholymis, Hag.........c.sce0sees 3 | 25. Tetrathemis, Brauer..........++ 1 By JEG RH Gh TEI ieccodoaccocnenob0e 2 | 26. Uracis, Ramb., ..s.v.ncasce-ssane 8 Up SURO eI NeIGK 3. eogoondoodepooGn007 30 | 27. Lyriothemis, Brauer...........- 1 5. Rhyothemis, Hag..........s0ee08 19 | 28. Agrionoptera, Brauer.........+- 4 6. Diastatops, Ramb. ............- 4 | 29. Orthemis, Hag. ..........eceese 8 7. Palpoplewra, Ramb. ..........5+ 11 | 30. Libellula, L., Brauer.......... 27 8. Neurothemis, Brauer. 3. Libetla, Bratier......-.--.0++-0+ 31 (Eolyneurarh)pccccessencee ek 10 | 32. Onychothemis, Brauevr......... 1 9. Celithemis, Hag. ...........0000 1 | 33. Diplacina, Brauer...........++++ 2 10.' Pertthemis, Hag, ........0.03.03 6 | 34. Dythemis, Hag............csse00s 32 11. Leucorhinia, Brittg............. 12 | 385. Macrothemis, Hag. ........+.++- 4 UG ID potholes, (Chae 0 cGeanooncbocossce 52 | 36. Trithemis, Brauer...........0++. 19 13. Mesothemis, Hag.........00.0000- 9 | 37. Brachythemis, Brauevr.......... 1 14. Pachydiplawx, Brauer........... 1 | 88. Crocothemis, Brauer............ 4 15. Erythrediplaxz, Brauer....... -10 | 39. Macrodiplaw, Brauer...........- 2 16. Erythemis, Hag. ...........0005- 11 | 40. Urothemis, Brauer............++. 3 17. Lepthemis, Hag. .......s.0..000s ll | 41. Zygonya, De Selys.........20000. 2 18. Acisoma, Ramb. .........:...... 2 => 19. Microthemis, Brauer............ 1 Selon M. Brauer ... 361 20. Brachydiplawx, Brauev.......... 4 En plus selon moi... ... 100 21. Nannodiplax, Brauey........... 2 == 22. Nannophya, Ramb. ............ 2 461 23. Nannodythemis, Brauer....... 1 — Des ie 1 les Névropteres Odonates. Sous-fam. 2. CorpvLtna. 411 GENRES. SOUS-GENRES. Légion 1. Cordulia. 1. Hemicordulia, De Selys...... 8 2% Cordulia, Leach............6+9: 16 Cordulia, Leach............+.- 3. Epitheca, Charp., De Selys 21 4. Oxygastra, De Selys........... 2 5. Gomphomacromia, Brauer... 4 Cordulephya, De Selys ......+. 6. Cordulephya, De Selys....... 1 Légion 2. Macromia. Idionyx, De Selys....ce.scsseseeees 7. Idionya, De Selys.......2.+0+4 if 4ischnosoma (Bates), De Selys 8. Ai’schnosoma(Bates),De Selys3 9. Epophthalmia, Burm., Bra. 7 SE TUE BED Na acoere {10 Macromia, Ramb.........+++ 14 Synthemis, De Selys ......+++++ 1l. Synthemis, De Selys ........- 6 83 Famille II. AASCHNIDA. Sous-fam. I. GompnHina. Légion 1. Gomphus. 1. Onychogomphus, De Selys...19 2. Ceratogomphus, De Selys.... 1 3. Erpetogomphus, De Selys.... 8 4. Ophiogomphus, De Selys..... 4 5. Heterogomphus, De Selys.... 2 6. Epigomphus, Hag...........+++ 2 7. Microgomphus, De Selys..... 1 8. Macrogomphus, De Selys.... 4 Gomphars; Lenokns iss. e003. 9. Cyclogomphus, De Selys...... 3 10. Phyllogomphus, De Selys.... 1 11. Platygomphus, De Selys..... 1 12. Gomphus, Leach, De Selys..40 13. Austrogomphus, De Selys.... 3 14. Hemigomphus, De Selys..... 3 15. Neogomphus, De Selys........ 3 Us. Agriogomphus, De Selys..... 1 Légion 2. Lindenia. Progomphus, De Selys .......... 17. Progomphus, De Selys........ 7 18. Gomphoides, De Selys........ 7 Gomphoides, De Selys........ 9 19. Cyelophylla, De Selys........ 9 20. Aphylla, De Selys..........+0. 6 § 21. Diaphlebia, De Selys......... 2 Zonophora, De Selys.......:.. d 22. Zonophora, De Solysie..2. 2.88 3 - § 23. Hagenius, De Selys............ 2 Hagenius, De Selys........... U24. Sieboldius, De Selys.......... 1 412 GENRES. 5. Diastatomma, Burm., De S.... 7. Lindenia, De Haan, De S.... Baron H. de Selys-Longchamps sur SOUS-GENRES. Diastatomma, B., De Selys 2 Gomphidia, De Selys......... 1 Tetumis, Wammbssc-ceus-se-e es a Cacus, De ial hyfsboonscbansaq0o5~ Lindenia, De aan, De Selys i Légion 8. Chlorogomphus. 8. Chlorogomphus, De Selys .... 30. Chlorogomphus, De Selys... Légion 4. Cordulegaster. 9. Cordulegaster, Leach......... 10. Petalia, Hag. ...0..0sccscereeeee Thecaphora, Ch., De Selys 1 Cordulegaster, Leach..........12 PCC, TAGE eseessecueroesceses i Phyllopetalia, De Selys...... 2 Hypopetalia, McLach....... 1 Légion 5. Petalura. HE Betalara, Weachs..cccrcseces> DS IPNONES oRctisorasonveteecsscascra 09. Sous-fam. 2. AUscHNINA. Meer 2 MOOACHissasiecnccascacesee ASCH Micmasitesccceacecessres 9 ) 3. Stawrophlebia, Brauer........ 4. Gynacantha, Ramb......... « 1 2 3 4. 5. 6 7 8 9 Petalura, Leach.........0..000. 1 Uropetala, De Selys.........+. il Tachopteryx, Uhler..........++ 1 PEN eS; WAM ss ccadedeceeeeeeas 1 172 Anda, Weach..saccdscersaserese 17 Cyrtosoma, Charp., De Selys 3 Gompheschna, De Selys...... 1 Brachytron, Evans............ 1 Aischna, F., De Selys.........50 Staurophlebia, Brauer........ 4 Neureschna, De Selys........ 5 Amphieschnu. De Selys...... 5 Gynacantha, Ramb........... 22 108 Pour le moment je m’abstiens de réunir les sous-genres par catégories de grands genres d’une maniére definitive ; les quatre coupes que je propose sont provisoires. Je réserve le nom de Cyrtosoma pour les espéces d’Anaz du groupe de Vephippigerus, Burm. (mediterra- neus, De Selys). les Névropteres Odonates. 413 Le sous-genre Gompheschna est crée pour recevoir la Gynacantha quadrifida de Rambur, dont les caractéres sont mentionnés dans sa description de l’espéce. Le sous-genre Amphiceschna comprend, entre autres, YAschna ampla, Ramb., ? dA?’schna Irene, Fonscolombe, et la Gynacantha ide, Brauer. cantha par Vespace basilaire réticulée, et de Newrceschna parce que la nervure sous-costale s’arréte au nodus. 10. LE. 12. Il se distingue de Gyna- Famille III. AGRIONIDA. Sous-fam. 1. CaLopTERYGINA. Légion 1. Calopterya. GENRES. SOUS-GENRES, TE Sulphis, la Oescsecceereese sea 2 Calopteryx, Leach ..........2 2. Calopteryx, Leach ............ 13 3. Matrona, De Selys............ 1 4, Cleis, De Selys .........ss00e 1 5. Sapho, De Selys ...c......00. 4 Echo, De Selys.........s0s.+00- 6. Mnais, De Selys..............5 5 7. Echo, De Selys ............... 1 8. Psolodesmus, McLach. ...... 1 9. Phaon, De Selys............00 1 Phaon, De Selys.....+.++-+++ 10. Neurobasis, De Selys......... 3 GERAIS, USIEX®S cncacoonocoosonposooe ll. Vestalis, De Selys ............ 4 F RTOS ELA O Neseomsncnenece camctses 9 Hetworino, Hag. ......+10-.-04. { 13. Hetwrina, Hag.........cee0 30 Légion 2. Euphea. Caliphwa, Hag. .......1...0.0000 14. Caliphea, Hag. ............... 1 15. Anisoplewra, De Selys........ 1 16. Epallage, Charp. ...........+.. 2 Euphea, De Belys............. 17. Euphea, De Selys ............ 16 18. Dysphea, De Selys............ 3 rae 19. Dicterias, De Selys........... 1 Dictertas, De Belys ........... { 30. Heliocharis, De Selys........ 3 Anisonewra, De Selys .......... 21. Anisonewra, De Selys......... 1 Légion 3. Amphipteryz. 22. Tetranewra, De Selys.......+. 1 Amphipteryw, De Selys...... 23. Amphipterya, De Selys...... 1 24. Diphlebia, De S. (Dineura, (De Selys, olim) ......+.e00 1 Légion 4. Libellago. . 25. Rhinocypha, Ramb...........- 21 Libellago, De Selys. .......... 136. Libellago, De Selys. ......... 5 Micromerus, Ramb...........000 27. Micromerus, Ramb. ......... 9 414 13. 119; Baron E. de Selys-Longchamps sur Légion 5. Thore. GENRES. SOUS-GENRES. 28. Cora, De Selys ..........2.0.s6 5 29. HEuthore, De Selys ........000+ 4 Thore, HAag....-..-cesescoratere 80: Thores Hage. ocevesess oes cee 8 31. Chalcopteryx, De Selys...... 2 160 Sous-fam. 2. AGRIONINA. Légion 1. Pseudostigma. 1. Megaloprepus, Ramb......... 1 Megaloprepus, Ramb. ........ { 2. Microstigma, Ramb. ......... 3 ; 3. Pseudostigma, De Selys...... 2 Mecistogaster, Ramb.......... ; 4. Mecistogaster, Ramb.......... 7 Légion 2. Lestes. 5. Megalestes, De Selys......... 1 6. Hypolestes, De Selys ......... 1 7. Archilestes, De Selys......... 2 Lestes, each) .... 66.0506 as+0- 8. Melanolestes, De Selys...... 1 Of Destessmeach sececsesteeeere 53 10. Sympycna, Charp..........+6- 1 11. Platylestes, De Selys...... apg i Légion 3. Podagrion. Paraphlebia, De Selys. ......... 12. Paraphlebia, De Selys....... 1 Philogenia, De Selys ............ 13. Philogenia, De Selys......... 5 Podagrion, De Selys .........+. 14. Podagrion, De Selys ......... 6 Heteragrion, De Selys .......... 15. Heteragrion, De Selys ...... 14 Perilestes, De Selys ...........- 16. Perilestes, Hage .....seccs nes TTY cS / ty sion “awa lobyt lca ee; a i = Vee te eyeing 6 Manip cer 2 ee yi x S ‘ : q Trams Ent Soc JEMELIV Es Trans Fink: Soed8 1 PLV Trans Link Soe 18 UPLUL G Sarma se. Trans. Ent. Soc. 1871. PL VI. Mh i, 1 Balenois cvras, var. &6 Kricogonia’ fantasia, 2, 8 Larinopoda Lycenoides, 7.laevas venatus. A.G Butler dal et hth. Feb. 1871. Mintern’ Bro? imp 1 : = 4 ; & ‘ j t<, + ¢ ‘ i - + . , e a . ‘ 1 iy r . 4 P . f : wr . : ’ * ‘ 5 z i P iB i = is ' I an , f < 7 * wy Vs . 1 i * 1871. PU. Vi. Ent. Soc. Trans LOH, JU TX Soc oo) Trans. Ent. s, THE TRANSACTIONS OF THE ENTOMOLOGICAL SOCIETY OF LONDON POR. TH Bic¥ EAR 1871. PART J. WITH SIX PLATES. LONDON: PRINTED FOR THE SOCIETY BY H. G. ROWORTH, 11, RAY STREET, FARRINGDON ROAD. SOLD AT THE SOCJETY’S ROOMS, 12, BEDFORD ROW, AND BY LONGMAN, GREEN, READER AND DYER, PATERNOSTER ROW. THE AGENT OF THE SOCIETY IN PARIS.IS M. DEYROLLE, 19, RUE DE LA MONNAIE. [Price 10s. ] \ Vf ? CONTENTS OF Prank Bl. PAGE. I. A Monograph on the Ephemeride. By the Rev. A. E. Eaton, Bibs! ve ; A : p : é 5 , : . 1-164. ENTOMOLOGICAL SOCIETY OF LONDON, No. 12, BEDFORD ROW. COUN Oi Ls toi Le A. R. WatLack, Hsq., F.Z.8., President. J. O. Westwoop, Esq., M.A., F.L.8., &e. H. T. Srainron, Esq., F.R.S., &e. Vice-Presidents. J. W. Dunnine, Esq., M.A., F.L.S., &e. SAMUEL STEVENS, Usq., F.L.S., Treasurer. Ropert M‘Lacutan, Esq., F.L.8. t Secretaries FERDINAND Gru, Esq. A. G. Burier, Esq., F.L.S., F.Z.8. ALEX. Fry, Esq., F.L.8. K. T. Hieerns, Esq., M.R.C.S. Major F. J. S. Parry, F.L.S. F. P. Pascon, Esq., F.L.S., &e. Epwarp Saunpers, Esq., F.L.S. The Meetings are held at Burlington House, Piccadilly, at 7 p.m. on the first Monday in every Month from November to July inclusive, and on the third Monday in November, February, and March. The Librarian attends at No. 12, Bedford Row, every Monday, from 2 to 7 o'clock. Members and Subscribers, resident more than fifteen miles from London, who have paid their subscription for the current year, are entitled to receive the Transactions without further payment, and to those resident in the United Kingdom they will be forwarded free, by post. ee. a ee es ee THE TRANSACTIONS OF THE ENTOMOLOGICAL SOCIETY OF LONDON FOR THE YEAR 1871. WITH ONE PLATE. LONDON: PRINTED FOR THE SOCIETY BY H. G. ROWORTH, 11, RAY STREET, FARRINGDON ROAD. SOLD AT THE SOCIETY’S ROOMS, 12, BEDFORD ROW, AND BY LONGMAN, GREEN, READER AND DYER, PATERNOSTER ROW. THE AGENT OF THE SOCIETY IN PARIS ISM. DEYROLLE, 19, RUE DE LA MONNAIEZ. — [Price 7s.] eR eet cn Se dg ne ee a ia NE a pare 3's ST oe ee ge —— RI ee ee VER of e.4 ar SE ie CONTENTS Patra de bog Wl NO I Die Il. New Species of Diurnal Lepidoptera from South and Central America. By W. C. Hnwitson, F.L.S. 5 fII. Descriptions of a new genus, and six new ee of Piorine. By A. G. Butter, F.L.8., &e. . : IV. On the dispersal of non-migratory Insects by atmospheric agencies. By ALBERT MuLLER, F.R.G.S., V. Notes on some British species of Oxypoda, me deseriptions of new species. By Davip SHarp,M.B. . : VI. Observations on Immature Sexuality and Alternate Gentes! tion in Insects. By B. T. Lownn, M.R.C.S., Eng. VI. On Additions to the Atlantic one By T. VERNON Wotraston, M.A., F.L.8. . VII. Onanew genus and species of Gh pasntor tee to the family Lucanide, from the Sandwich Islands. ae! Cuas. O. WATERHOUSE Proceedings ENTOMOLOGICAL SOCIETY OF LONDON, No, 12, BEDFORD ROW. COUNCIL, 1871. A. RB. Watuack, Esq., F.Z.8., President. . Westwoop, Esq., M.A., F.L.8., &e. J.O H. T. Stainton, Esq., F.R.S., &e. Vice-Presidents, J.W . Dunnine, Esq., M.A., F.L.S., &e. - SAMUEL STEVENS, Hsq., F.L.S., Treasurer. Rogpert M‘Lacutan, Esq., F.L.S. FERDINAND Grut, Esq. A. G. BuTLER, Bea ty L.S., F.Z.S. | Major F. J. 8. Parry, F.L.S. ALEX. Fry, Esq., E F. P. Pascor, Esq., F.L.S., &c. Hale Hiaerns, Esq. ‘ 3 R.C.S. EpwakD SaunpDeErs, Esq., F.L.S. Secretaries. The Meetings are held at Burlington House, Piccadilly, at 7 P.M. on the first Monday in every Month from November to July inclusive, and on the third Monday in November, February, and March. The Librarian attends at No. 12, Bedford Row, every Monday, from 2 to 7 o'clock. Members and Subscribers, resident more than fifteen miles from London, who have paid their subscription for the current year, are entitled to receive the Transactions without further payment, and to those resident in the United Kingdom they will be forwarded free, by post. THE TRANSACTIONS ENTOMOLOGICAL SOCIETY OF LONDON FOR THE YEAR 1871. PART III. WITH TWO PLATES. LONDON: PRINTED FOR THE SOCIETY BY H. G. ROWORTH, 11, RAY STREET, FARRINGDON ROAD. SOLD AT THE SOCIETY’S ROOMS, 12, BEDFORD ROW, AND BY LONGMAN, GREEN, READER AND DYER, PATERNOSTER ROW. THE AGENT OF THE SOCIETY IN PARIS IS M. DEYROLLE, 19, RUE DE LA MONNAIE. [Price 5s.] IX. ; ee ee —— Sy Sn ET eg OE a ae XVI. A. G. Butter, Esq., F.L.S., F.Z.S. Avex. Fry, Hsq., F.L.S. E. T. Hieetns, Esq., M.R.C.S. The Meetings are held at Burlington House, Piccadilly, at 7 P.M. on the first Monday in every Month from November to July inclusive, and on the third Monday in November, February, and March. CONTENTS OF PART IIL An Examination of the arrangement of Macro-Lepidoptera introduced in England by Mr. Doubleday, and a suggestion as to its origin; with some strictures on synonymic Lists. By W. Arnotp LEwis . ! ‘ : ‘ : 4 : Descriptions of some new Hxotic species of Lucanide. By Prof. J. O. Westwoop, M.A., F.L.S. A “ : Descriptions of a new genus, and of two new species of Longicorn Coleoptera. By H. W. Bates, F.Z.8., &e. . Descriptions of three new species of Cicindelide. By H. W. Bares, F.Z.8., &e. : K i S 3 : » ‘ Descriptions of new genera, and of some recently discovered species of Australian Phytophaga. By J. 8. Baty, F.Z.S. . Descriptions of five new species, and a new genus of Diurnal Lepidoptera from Shanghai. By A. G. BuriEr, F.LS., &c. On some black species of Cantharis with red heads and filiform antennee. By Cuas. O. WATERHOUSE. . ¢ 2 Apercu statistique sur les Névroptéres Odonates. Par le Baron E. pE Senys-Lonecuamps, Mem. Hon. Soc. Ent. Lond. . . “ . 2 5 : 4 Proceedings ENTOMOLOGICAL SOCIETY OF LONDON, No. 12, BEDFORD ROW. COUNCIL, 1871. A. R. Wattack, Hsq., F.Z.8., President. WeEstwoop, Esq., M.A., F.L.S., &e. Jo.0% H. T. Stainton, Esq., F.R.S8., &c. Vice-Presidents. J. W. Dunnine, Hsq., M.A., F.L.S., &e. - Samvuen Stevens, Hsq., F.L.S., Treasurer. Rosert M‘Lacutan, Hsq., F.L.S. FERDINAND Grut, Esq. Major F. J. S. Parry, F.L.8. F. P. Pascor, Hsq., F.L.S., &e. i Secretaries. EpwarbD SauNDERS, Hsq., F.L.S. PAGE. 317 353 The Librarian attends at No. 12, Bedford Row, every Monday, from 2 to 7 o'clock. Members and Subscribers, resident more than fifteen miles from London, who have paid their subscription for the current year, are entitled to receive the Transactions without further payment, and to those resident in the United Kingdom they will be forwarded free, by post. THE TRANSACTIONS ENTOMOLOGICAL SOCIETY OF LONDON FOR THE YEAR 1871. PART IV. LONDON: PRINTED FOR THE SOCIETY BY H. G. ROWORTH, 11, RAY STREET, FARRINGDON ROAD. SOLD AT THE SOCIETY’S ROOMS, 12, BEDFORD ROW, AND BY LONGMAN, GREEN, READER AND DYER, PATERNOSTER ROW. THE AGENT OF THE SOCIETY IN PARIS ISM. DEYROLLE, ily RUE DE LA MONNAIE. ee Price: 13: aa Se ee eee 7 ae ee eee ere a OS ee Se See ee ee en Oe ~~ Se oe CONTENTS OF PART «Uv: XVII. On the forms of Zygena Trifolii, with some remarks on the question of specific difference, as opposed to local or phytophagic variation, in that genus. By T. H. Brices, B.A. 4 é : : . 2 < . . XVI. Remarks concerning the identification of Myrmeleon formi- caleo, formicariwm, and formicalyn» of Linné. By R. McLacuian, F.L.S., Sec. Ent. Soc. . ENTOMOLOGICAL SOCIETY OF LONDON, No. 12, BEDFORD ROW. COUNCIL, 1871. A. BR. WauLack, Hsq., F.Z.8., President. WEstwoop, Hsq., M.A., F.L.8., &. J. O. H. T. Srarnton, Hsq., F.R.S., &. Vice-Presidents. J. W. Dunning, Hsq., M.A., F.L.8., &e. SAMUEL STEVENS, Esq., F.L.8., Treasurer. Rogpert M‘Lacuizan, Esq., F.L.S8. FERDINAND GRut, Esq. A. G. Burirr, Hsq., F.L.S., F.Z.8. | Major F. J. S. Parry, F.L.S. ALEX. Fry, Esq., F.L.8. F. P. Pascoz, Esq., F.L.S., &c. E. T. Higertns, Esq., M.R.C.S. Secretaries. PAGE, 417 441 EDWARD SAUNDERS, Hsq., F.L.S. The Meetings are held at Burlington House, Piccadilly, at 7 p.m. on the first Monday in every Month from November to July inclusive, and on the third Monday in November, February, and March. The Librarian attends at No. 12, Bedford Row, every Monday, from 2 to 7 o'clock. Members and Subscribers, resident more than fifteen miles from London, who have paid their subscription for the current year, are entitled to receive the Transactions without further payment, and to those resident in the United Kingdom they will be forwarded free, by post. THE TRANSACTIONS ENTOMOLOGICAL SOCIETY OF LONDON FOR THE YEAR 1871. LONDON: PRINTED FOR THE SOCIETY BY H. G. ROWORTH, 11, RAY STREET, FARRINGDON ROAD. SOLD AT THE SOCIETY’S ROOMS, 12, BEDFORD ROW, AND BY LONGMAN, GREEN, READER AND DYER, PATERNOSTER ROW. THE AGENT OF THE SOCIETY IN PARIS IS M. DEYROLLE, 19, RUE DE LA MONNAIE, ed [Price 2s.] | See a Te j f M] . y f : : } a, CONTENTS OF PART). Vi. Title Page, Contents, List of Members, &c. : 3 : : G iy Proceedings : : 3 z ; s - “ ° 3 XXxiii. Index . Hs a a é 4 a A 3 a ‘ é lxxvii. ENTOMOLOGICAL SOCIETY OF LONDON, No. 12, BEDFORD ROW. COUNCIL, 1871. A. R. Wattack, Esq., F.Z.8., President. J. O. Westwoop, Hsq., M.A., F.L.S., &e. H. T. Srarnton, Hsq., F.B.S., &e. Vice-Presidents. J. W. Dunnine, Esq., M.A., F.L.S., &c. SaMUEL STEVENS, Hsq., F.L.8., Treasurer. Rospert M‘Lacutan, Esq., F.L.S. FERDINAND Grut, Esq. A. G. Burirr, Esq., F.L.S., F.Z.8. | Major F. J. S. Parry, F.L.S. ALEX. Fry, Esq., F.L.8. F. P. Pascoz; Esq., F.L.S., &e. E. T. Hieerns, Esq., M.R.C.S. EpwarD Saunpers, Esq., F.L.S. k Secretaries. The Meetings are held at Burlington House, Piccadilly, at 7 p.m. on the first Monday in every Month from November to July inclusive, and on the third Monday in November, February, and March. The Librarian attends at No. 12, Bedford Row, every Monday, from 2 to 7 o'clock. Members and Subscribers, resident more than fifteen miles from London, who have paid their subscription for the current year, are entitled to receive the Transactions without further payment, and to those resident in the United Kingdom they will be forwarded free, by post. 5 Hey be ee LA Se Uh A WA UH HF vv AAU IMUM WLM Wiehe Heya We i eee, 3 9088 00843 2973 re iM hh Bh