< — FP | aps. PROCEEDINGS OF THE SCIENTIFIC MEETINGS OF THE ZOOLOGICAL SOCIETY OF LONDON FOR THE YEAR PRINTED FOR THE SOCIETY, AND SOLD AT THEIR HOUSE IN HANOVER SQUARE, LONDON: MESSRS. LONGMANS, GREEN, AND CO, PATERNOSTER BOW, LIST OF THE COUNCIL AND OFFICERS ' OF THE ZOOLOGICAL SOCIETY OF LONDON. 1889. COUNCIL. (Elected April 29, 1889.) Proressor W. H. Frower, C.B., LL.D., F.R.S., President. Lr.-Gen. Tue Lorp Asinerr, | Dr. Epwarp Haminron, Vice- C.B President. Dr. Joux Anprerson, LL.D., E. W. H. Horpsworrn, Esq. F.R.S. Henry A. Brasssy, Esq. Henry E. Dresser, Esq. Cuartes Drummonp, Esq., /'rea- surer. Str JosepH Fayrer, K.C.S.L, F.R.S., Vice-President. Joun P. Gasstor, Esq. F. Du Cane Gopmay, Esq.,F.R.S., Vice-President. Cor. James A. Grant, C.B., C81, F.R.S. Dr. A. C. L. G. Ginrner, F.R.S., Vice-President. — - Lr.-Gen. Str H. B. Lumspen, K.C.S.1. | Wazrer Morrison, Esq., M.P. ProressoR ALFRED NeEwrTon, M.A., F.R.S., Vice-President. Tae Lorp Arraur RvssExt. Ospert Satvin, Esq., F.R.S., Vice-President. Howarp Saunpers, Esq., F.L.S. Paine Lurtey Scrarer, Esq., M.A.,Ph.D., F.2.8., Secretary. Josern Travers Surru, Esq. PRINCIPAL OFFICERS. P. L. Serarer, Esq., M.A., Ph.D., F.R.S., Secretary. Frank E. Bepparp, Esq., M.A., Prosector. \ Mr. A. D. Barrrerr, Superintendent of the Gardens. Mr. F. H. Warernovse, Librarian. Mr.,Jonn Barrow, Accountant. Mr. W. J. Witxrams, Chief Clerk. LIST CONTRIBUTORS, With References to the several Articles contributed by each. Page Batty. Josera S., F.L.S. Descriptions of new South-American Coleoptera of the Genus Diabrotica ...... Saal ead wie «ead pas peta 88 BARDELEBEN, Professor Karu. On the Prepollex and Prehallux, with Observations on the Carpus of Theriodesmus phylarchus. (Plate XXX.) .. 259 Bates, H. W., F.R.S., F.Z.S., &c. On new Species of the Coleopterous Family Carabide, collected by Mr. J. H. Leech in Kashmir and Baltistan.... 210 On new Species of the Coleopterous Families Cicindelide and Carabide, taken by Mr. Pratt in Chang Yang, near Ichang on the Yang-tsze, China ...........---.++24e- 216 On new Genera and Species of Coleopterous Insects from Mount Kinibalu, North Borneo ..............22--++ ++ 383 Bepparp, Frank E., M.A., F.RS.E., F.G.S., F.ZS., Prosector to the Society, Lecturer on Biology at ~* Guy’s Hospital. Note upon the Green Cells in the Integument of 4olosoma tenehraram. "(Plate Vy Po OT SE Pe Hee 51 iv Page On certain Points in the Anatomy of the Accipitres, with reference to the Affinities of Polyboroides ..........-+++ 77 Some Notes upon the Anatomy of the American Tapir iirpiras (eCreBtris) aie.s a. eae scseie'svewime xis a seer 252 On the Oligochztous Fauna of New Zealand, with pre- liminary Descriptions of new Species .........0..+--+4+ 377 Contributions to the Natural History of an Annelid of Chie Went IEF Olesen coe ret eee eines ~ once stim ee 440 Contributions to the Anatomy of Picarian Birds.—Part I. On some Points in the Structure of the Hornbills .. ...... 587 On the Anatomy of Burmeister’s Cariama (Chunga bur- meistert) .....0+. poy SEL in SEDO OO OOEE.D 5 - 594 Bepparp, Frank E., M.A., Prosector to the Society, Lecturer in Biology at Guy’s Hospital, and Treves, FREDERICK, F.R.C.S., Surgeon to and Lecturer in Anatomy at the London Hospital. On the Anatomy of Rhinoceros sumatrensis.......- er ae | BeppomgE, Col. R. H. Descriptions of Land-Shells from the Island of Koror, Pelew:Group. (Plates Sige OT. es oss open aeemaioe 112 Bett, F. Jerrrey, M.A., Sec.R.M.S., F.Z.S., Professor of Comparative Anatomy in King’s College, London. Remarks upon Bipalium kewense ...... 2. .+++00+-08 elie s Additions to the Echinoderm Fauna of the Bay of Bengal 6 Descriptions of some new or rare Species of Plexaurids. (Plate TE) Ae 6 Peele sees «nisin ’s Sainie pbs Saee= rem 47 Exhibition of, and remarks upon, specimens of Virgularia mirabilis, Palinurus vulgaris, and Galathea strigosa ...... 394 Vv Page Biaavw, F. E. (of Amsterdam). Letter from, containing remarks upon the Development of the Horns of the White-tailed Gnu (Catoblepas gnu) ...... 2 Bourencer, G. A., F.Z.S. On the Species of Rhacophorus confounded under the name Of Beimaculatus i200. cscs se cseecs Se er ee 27 On some Specimens of Lizards in the Zoological Museum gt Etanie (Saale). (rime 0 V.): . .. cs 0a wee ow dibtalstaserein 143 Second Account of the Fishes obtained by Surgeon-Major A. S. G. Jayakar at Muscat, East Coast of Arabia. (Plates ew VLEET naa. whew « hain scleieeietaenit end 236 Note on Python curtus. (Plate XLV.) ............4 432 Butter, Sir Water, K.C.M.G., F.R.S., C.M.Z.S. On a Species of Crested Penguin (Ludyptes sclateri) from the Auekland Islands. (Plate TX.) .... 62.0Bicns sedans ss 82 Butter, Artruur G., F.LS., F.Z.S., Assistant-Keeper, Zoological Department, British Museum (Nat. Hist.) Description of a new Genus of Fossil Moths belonging to the Geometrid Family Euschemide. (Plate XXXI.)...... 292 ButLer, GERARD W., B.A. On the Subdivision of the Body-cavity in Lizards, Croco- diles, and Birds. (Plates XLVI.-XLIX.) .............. 452 On the Relations of the Fat-bodies of the Sauropsida. Etter ath aie eX), os 5 ay «i ainainioa coh ois Sata alae ae a 602 CaMBRIDGE, Rey. O. Pickarp, M.A., F.R.S., C.M.Z.S., &e. On some new Species and a new Genus of Araneidea. CRIME es sare aS ob pha lice steed eee sie Bialac teas | OA On a new Tree Trap-door Spider from Brazil.......... 250 vi Cooke, Rev. A. H., M.A., F.Z.S. On the Generic Position of the so-called Physe of AMSEPALD Csisee ow JPRS sno dtiaae ea) be Shae Dickson, Dr. E. D., C.M.Z.S. See Scuarer, P. L. Dresser, Henry E., F.Z.S. Exhibition of, and remarks upon, some eggs of the Adriatic Black-headed Gull and the Slender-billed Gull obtained in Andalusia Everett, A. H., C.M.ZS. Remarks on the Zoo-geographical Relationships of the Island of -Palawan- and some adjacent Islands. (Plate Fisk, Rev. G. H. R., C.M.Z.S. Extract from a letter containing remarks upon Bipalium kewense ...... Frower, Wiiuram Henry, C.B., LL.D. F.RS., F.LS., President of the Society. Exhibition of, and remarks upon, the skin of the face of a male African Rhinoceros with a third horn.............. Gapow; Hans, Ph.D., M.A., F.Z.S., Strickland Curator and Lecturer on the Advanced Morphology of Vertebrata in the University of Cambridge. On the Taxonomic Value of the Intestinal Convolutions an Birds. * (Plate X XAT ee Pes a es ee ee Gietioi1, Henry H., C.M.ZS. On a supposed new Genus and Species of Pelagic Gadoid Fishes from the Mediterranean. (Plate XXXIV.)........ Gopwin-AusteENn, Lieut.-Col. H. H., F.R.S., F.Z.S., &e. On a Collection of Land-Shells made in Borneo by Mr. A. Everett, with Descriptions of supposed new Species.—Part I. Cyclostomacezre. (Plates XXXV.—XXXIX.) ............ Page . 316 .. 220 448 303 328 332 “vil Page Goopwin, A. P. Exhibition of, and remarks upon, some rare Paradise- birds, procured during Sir William Macgregor’s recent expedition to Mount Owen-Stanley, New Guinea ........ Goruaw, Rev. H. S., F.Z.S., F.E.S. Descriptions of new Species and of a new Genus of Cole- optera of the Family Telephoride. (Plate X.) .......... Descriptions of new Species of the Coleopterous Family Erotylide. (PlateLXI.)........ Green, J. F., F.Z.S. Exhibition of a large example of the Common Eel (Anguilla vulgaris) Gtwrner, Auperr C. L.G., M.A., M.D., F.R.S., V.P.Z.S., Keeper of the Zoological Department, British Museum. Exhibition of, and remarks upon, some Fishes from the WEBEL COASELORSCOUANG: vca)te..0 os. ose e eRe Notice of two Fishes new to the British Fauna. (Pla IE Ys )- boos stercay «pm -ciouy- adinwos. Bags dq aeninien Exhibition of a monnted specimen of Gazella thomsoni .. On some Fishes from the Kilima-njaro_ district. CPlateoe PED.) ei toca ets cs c's3 sss 20s 52 een al Description of a new Antelope from Southern Central PURGE io cea cea MS cuaPalls. cig, Aeriin. 26 “a ata MONEE cn i. 2 Gurney, JOHN Henry, Jun., F.Z.S. Exhibition of, and remarks upon, a specimen of a Hybrid RVPAC INE, SEAR NES Sin sage os ai lase Avera che Howes, G. B., F.Z.S., F.L.S., Assistant Professor of Zoology, Normal School of Science and Royal School of Mines S. Kensington. Exhibition of, and remarks upon, a specimen of the Mammary Region of a female of Myrmecobius fasciatus... . 451 96 » OLS 394 85 viii Hoye, WiturM E., M.A. (Oxon.), F.R.S.E. Observations on the Anatomy of a rare Cephalopod (Gonatus fabricii). (Plates XIII. & XIV.) ............ 117 Page Jacosy, Martin, F.E.S. List of the Crioceride, Cryptocephalide, Chrysomelida, and Galerucide collected in Venezuela by M. Simon, with Descriptions of the new Species.... 2.0.2.2... cece cececs 263 Kirsy, W. F., F.E.S., Assistant in the Zoological Department, British Museum. Descriptions of new Genera and Species of Odonata in the Collection of the British Museum, chiefly from Africa.. 297 Leecu, J. H., B.A., F.R.G.S., F.L.S., F.Z.S., F.E.S., &e. On the Lepidoptera of Japan and Corea.—Part III. Heterocera, Sect. II. Woctues and Deltoides. (Plates UF) I) AP ae toi wr oh RE RS eg Sot 474 Loner, Sir E. G., Bart., F.Z.S. Exhibition of, and remarks upon, a mounted skeleton of a Rocky-Mountain Goat (Haplocerus montanus)........ 99 LypEkkeER, R., B.A., F.Z.S., F.G.S., &c. On a Skull of the Chelonian Genus Lytoloma. (Plates iA a ie Eira ar i S p MI R p 60 On an apparently new Species of Hyracodontotherium.... 67 On Associated Remains of a Theriodont Reptile from the Karoo System of the Cape. (Plates LIV. & LV.)........ 572 Mincutn, Epwarp A., Keble College, Oxford. © Note on the Mode of Attachment of the Embryos to the Oral Arms of Aurelia aurita. (Plates LVII. & LVIII.) 583 MonrtIice.ut, Fr. Say. Notes on some Entozoa in the Collection of the British Museums \(Plate eX XIE), vasciw dee tn anieeibe eae ae 321 i Page MovysripGe, EADWEARD. Exhibition of a number of projections with the Oxy- hydrogen Lantern to show the Locomotion of Animals .... 327 Newron, AutrreD, M.A., F.R.S., F.L.S., V.P.Z.S., Profes- sor of Zoology and Comparative Anatomy in the University of Cambridge. Exhibition of, and remarks upon, a specimen of the so- called Penneulaimillat ss eis oiviis SeiVid eee ealde sees | O On the Breeding of the Seriema (Cariama cristata). ER ay aay ee aici ns Sin 00, 0G. ~ & 0m ae aie are 25 Newton, E. T., F.G.S., F.Z.S. A Contribution to the History of Eocene Siluroid Fishes. Eee Ende watal ales op. *:+ 0 a0 Molva a ete 261 Exhibition of a tibio-tarsus of an extinct bird (Gastornis klasseni) from the Woolwich Beds of Croydon .......... 220 Ocattsy, J. Dovcuas, F.L.S., Ichthyological Department, Australian Museum, Sydney. Notes on some Fishes new to the Australian Fauna .... 151 Parker, W. K., F.R.S., F.Z.S., &ce. On the Qsteology of Steatornis caripensis, (Plates RVI). «Malaria casa se cian MUU se atte tenes we eee ee LOL Parker, W. Newton, Ph.D., F.Z.S., Professor of Biology in the University College of S. Wales and Monmouthshire. On the occasional Persistence of the Left Posterior Cardinal Vein in the Frog, with Remarks on the Homolo- gies of the Veins in the Dipnoi............ CAO SAS be 145 Rosertson, Davin, and SressineG, Rev. Tuomas R. R., M.A. Notice of a Memoir containing the descriptions of four new British Amphipodous Crustaceans.......-.+...0.5 +, 452 Romanes, GrorcGe J., F.R.S., F.Z.S. On the Mental Faculties of the Bald Chimpanzee ( Anthro- LORIECEUS CHLUUR)). ote ai haves») 0/0 oehue eee ih ete tine she Mell ane x Page Scrater, Puriie Luriey, M.A., Ph.D., F.R.S., Secretary to the Society. Report on the additions to the Society’s Menagerie in December 1888 x... s0.7 ays Bae ea ei ce bce ] Report on the additions to the Society’s Menagerie in sannary 1689 oo os ee. oe os be Br. Bee, Exhibition of, and remarks upon, a living specimen of the Thick-billed Lark (Rhamphocorys clot-hbeyi) ............ 26 On some new Species and Genera of Birds of the Family Dendrocolapitide oo... Smee ren, sok. b, obo). ae Pe oO 32 Exhibition of, and remarks upon, a series of specimens of the eggs and chicks of the Hoatzin ( Opisthocomus eristatus). 57 Exhibition. of, and remarks upon, some heads and skins of a new Antelope obtained by Mr. H. C. V. Hunter, F.Z.S., in WNorth-Eaecern AWica we ceo... > Sl ee ee ee 58 Report on the additions to the Society’s Menagerie in Heuraary TGS9? "see eeermise eo... o,f t,o s eee eae Remarks upon the Collections of Fishes made at Constan- tinople by Dr. E.. D; Dickson, C-M.Z.S., .. ...:-.--¢h<-bEV Bee Report on the additions to the Society’s Menagerie in Mareh 1889... ..%./. bes x eskecdl! & Ve sates). 2 picts bol F agld-- Ue Exhibition of, and remarks upon, a pair of Buprestine Beetle (Julodis ffinchi), obtained by Mr. B. T. Ffinch near Raradhn | 2025 <3. 57 Ae eee cereale ee es een 219 Exhibition of, and remarks upon, a specimen of the Mole- cricket (Gryllotalpa vulgaris) found at Bagdad, and trans- mitted by Mrs. -Talbot.- . 578 Peet ay Oye p25 0 eg Remarks on interesting animals observed during a visit to the Zoological Gardens of Rotterdam, Amsterdam, and ASEWORD. 5.20 es i ies enh ede ners- GOERS ape 219 xi Report on the additions to the Society’s Menagerie in 1S ee oe een are erin ee ie Exhibition of, and remarks upon, a living specimen of an albino variety of the Cape Mole-Rat...............+.+--- Exhibition of, and remarks upon, a mummy of a Falcon obtained at Thebes in Egypt.......... Exhibition of, and remarks upon, a series of photographs taken at Antipodes Island............++-- Perot Nee oe Exhibition of, and remarks upon, a Leaf-insect (Phyllium gelonus) living in the Society’s Insect-house...........-.- Report on the additions to the Society’s Menagerie in My TBR oe ie cia) a oictaia aie tes cde ae wa aie «em ne List of Birds collected by Mr. Ramage in Dominica, West Description of Hunter’s Antelope. (Plate XLII.)...... Report on the additions to the Society’s Menagerie in June, July, August, and September, 1889.......-....- List of Birds collected by Mr. Ramage in St. Lucia, West VGC ee ee a le Re ene ese re: Report on the additions to the Society’s Menagerie in Ope GS coe ce eee ce vs tee oe on * m hamlpiaiainie aie wieoie Exhibition of a skin of an albino variety of the Cape Mole- Rat (Georychus capensis) .. 1... 0000.00 e etree eee teenies Report on the additions to the Society’s Menagerie in November 1889...... >t Exhibition of, and remarks upon, an egg of the Crested Screamer (Chauna chavaria).......- 246 262 262 316 326 372 393 394 447 449° 586 586 Xii Page Seesoum, Henry, F.L.S., F.Z.S., &e. Exhibition of, and remarks upon, a male example of Phas- tanus chrysomelas purchased in Leadenhall Market........ 247 Exhibition of, and remarks upon, a small collection of Birds from the Bonin Islands, and of a pair of Merula eelanops from Fatsirio Island (1), 22% 2. 8. oD. ee 586 SHELLEY, Captain G. E., F.Z.S. On the Birds collected by Mr. H. C. V. Hunter, F.Z.S., in Eastern Africa. (Plates XL.& XLI.) .............. 356 Sowersy, G. B., F.L.S., F.Z.S. Descriptions of thirteen new Species of Land-Shells, with a Note on Bulimus fulminans. (Plate LVI.) .........-.. 577 STEBBING, Rev. THomas R. R., M.A. Notice of a Memoir on Urothoé, a Genus of Amphipodous Crustaceans, and on a new allied Genus, proposed to be Callen POnROUter on Cae 2 ore a ake o.taden ss ee + aie kee 394 Stessinc, Rev. Tuomas R. R., M.A., and Rospertson, Davin. Notice of a Memoir containing the descriptions of four new British Amphipodous Crustaceans ...........+...--0.- 452 Stiriine, E. C., M.A., M.D. Cantab., F.R.C.S. Eng., Lec- turer on Physiology in the University of Adelaide. Letter from, containing a Description of a new Australian On some Points in the Anatomy of the Female Organs of Generation of the Kangaroo, especially in relation to the acts of Impregnation and Parturition .................. 002s 433 Swinnoe, Col.C., F.L.S., F.Z.S. On New Indian Lepidoptera, chiefly Heterocera. (Plates SOEIUES Sa LY.) 20m ey ees eet lenis sine oe wee 396 Taczanowskl, L., C.M.Z,S. Description d’une nouvelle Locustella de la Corée ...... 620 xiii Page TEGETMEIER, WILLIAM BERNHARD, F.Z.S. Exhibition of, and remarks upon, a specimen of a female Gold Pheasant in male plumage .... 0... eeee.sseseeees 135 Exhibition of a pair of distorted Horns of the Ibex of Cashmere (Capra abirica)...". <243 cascade ssaemnsce «» 135 Exhibition of, and remarks upon, some specimens illus- trative of the Variations of Plumage of the Common Par- CIOS ieiatn tues Semin anes done ss vede san eebpateenimess ste Tuomas, OupFiEtp, F.Z.S., Natural-History Museum. Exhibition of a new Species of Muntjac, from Tenasserim, proposed to be called Cervulus fee ......... gee eats geek sts 85 Description of a new Bornean Monkey belonging to the Genus Semnopithecus. (Plate XVI.)............. wager Lad Preliminary Notes on the Characters and Synonymy of the different Species of Otter ........... are. ae 190 On the Mammals of Mount Kina Balu, North Borneo. CPE RPV ier este tds os shes occ. a etenehigearinere st 228 Description of a new Genus of Muridee allied to Hydromys. (Plate Me Mia aia sis so ciccn Sohn eon va rupameeinss sae as, On a new Mungoose allied to Herpestes albicaudatus. (Plate LXIT.) ..... ALB 0 ER Re A wae owls pede ae Tuomson, Artuur, Head-Keeper of the Society’s Menagerie. Report on the Insect-house for 1888 ............-... 85 Treves, Frepertck, F.R.C.S., Surgeon to and Lecturer in Anatomy at the London Hospital, and Brpparp, Frank E., M.A., Prosector to the Society, Lecturer on Biology at Guy’s Hospital. On the Anatomy of Rhinoceros sumatrensis............ 7 xiv Page Tristram, Rev. Henry Baxer, M.A., LL.D., F.R.S., Canon of Durham. Remarks upon a specimen of Emberiza cioides, stated to have been captured at Flamborough, in the collection of IMT ACOARE . aise Sb sisgen. tialseyapgeeieleu tie ate de® ok 6 Witson, Scort, F.Z.S. Descriptions of some new Species of Sandwich-Island Birds 445 Woopwarp, A. Smiru, F.G.S., F.Z.S., of the British Museum (Natural History). Exhibition of, and remarks upon, a maxilla of Saurichthys, from the Rheetic Formation of Aust Cliff, near Bristol .... 161 Note on Bucklandium diluvii, Konig, a Siluroid Fish from the London Clay of Sheppey. (Plate XXIT.)........... 208 Remarks upon an extinct Saw-fish (Sclerorhynchus atavus) and exhibition of a fragment of its rostrum.. ...... 449 Woopwarp, B. B., British Museum (Nat. Hist.). Exhibition of, and remarks upon, a drawing of a Carni- vOrous Snail, Arone Cay rT is = ots - > seecensses se eede 327 Exhibition of an example of a fossil Shell, Nevitina schmid- eliana, and remarks upon its peculiar mode of growth .... 327 LIST OF PLATES. 1889. Plate , Page I. Eggs of Cariama cristata...........+. AIT op Naitahe 25 BUS PNG WiSOlders yeti. is cin. . « osteslencinse eine Ei toe 208 XXIII. Map of Palawan and adjacent Islands .....-..--+--- 220 XXIV. Sciurus whiteheadi.... 60... cece eee eee tenes 228 XXV. Tetruroge guentheri .......6.+ eee ree creer ree eeee XXVI. Caranx jayakari . 1.0... cece cece cee e eee ree ces 236 XXVII. Fig. 1. Trigla arabica. Fig. 2. T. polysticta...... | XXVIII. Monacanthus melanoproctes’ .....-+-++e0+++20005 XXIX. Xeromys myoides ....--++--e06 veeee tener eeees 247 XXX. Prepollex and prehallux of Mammals .......--.++-- 259 iV Plate Page XXXI. Lithopsyche and allied Genera ...........00.eeeuee 292 XXXII. Diagrammatic representation of affinities of Birds 303 according to their intestinal convolutions........ MOXOMMIT. New-orirare’ Entozoam. .scn.'snvcocce oe cee » o2l XXXIV. Hretmophorus kleinenbergi..........0..00cccueevees 328 XXXV~ XXXVI. [ XXXVII. UNew Bornean Land-Shells .............0cccccecees 332 XXXVIII. | MXRTX. J MILs Pachyprora miata, Greta sae. - siees citele hae shee 356 XLI. Fig. 1. Zosteropsperspiciilata. Fig. 2. Cinnyris hunteri MLE = Damalisiuntenty Or mercer a << e\ LVI. New Species of Land-Shells .............ee0eeee0e 577 cvnit Aupelia uri. «aide aes Pe ee ee OES acays onvsrae 583 ae Fat-bodies in Sauropsida .......... cee cece eee es 602 LXI. New Species of Hrotylid@ .............0 ceeeeeea ee 613 XII; - Herpesies grandis cx irrmercianciss slo bes ve tp en oon oo fMODD PROCEEDINGS OF TIE SCIENTIFIC MEETINGS OF THE ZOOLOGICAL SOCIETY OF LONDON. January To, 1889. Prof. Flower, C.B., LL.D., F.R.S., President, in the Chair. The Secretary read the following report on the additions to the Society’s Menagerie during the month of December 1888 :— The total number of registered additions to the Society’s Mena- gerie during the month of December was 74, of which 50 were by presentation, 2 by birth, 8 by purchase, and 14 on deposit. The total number of departures during the same period, by death and removals, was 85. Among these I may call special attention to the young Chimpanzee purchased of Mr. Cross of Liverpool, December 6. This is appa- rently of the same species as the specimen purchased October 24, 1883 (see P. Z.S. 1883, p. 464, and 1885, p. 673, pl. xli.), which is still living in the Society’s Gardens, and is, so far as can be at pre- sent ascertained, referable to the Bald-headed Chimpanzee, Anthropo- pithecus calvus (Du Chaillu) *. Mr. Bartlett, in his communication to the Society on this subject (above referred to), has pointed out the distinctions between this Chimpanzee and the ordinary form (A. troglodytes). The receipt of a second specimen is of great interest as tending to confirm the validity of the species. A specimen of the common Chimpanzee of about the same age being also in the Society’s col- lection at the present time, it is easy to make a comparison between the two forms. 1 See on this subject “ The Bald-headed Chimpanzee, ” in ‘Nature,’ vol. xxxix. p. 254 (Jan. 10th, 1889). Proc. Zoot. Soc.—1889, No. I. ] 2 HEER F. E. BLAAUW ON CATOBLEPAS GNU. ___[ Jan. 15, The following letter addressed to the Secretary by Heer F. E. Blaauw, of Amsterdam, relating to the development of the horns of the White-tailed Gnu (Catoblepas gnu), as observed in several ex- amples of this Antelope bred in the writer’s menagerie, was read :— «534 Heerengracht, Amsterdam, December 1888. “« Srr,—I am now able to send you the long promised drawings showing the development of the horns of Catoblepas gnu. ‘