7 re oe i = ; a ‘ Fi : ! : 7 ; ,) 7 i ; ; I eT i ; bl iG 7 : wy wa _ 4 Pri : iw a sz | _ i v r | i ia 4) Ii, We ce : a Pi ‘ae y a ri ; ay 4 7 7 UF : ? , 7 | a P + i > i : 7. 0 ; : oS Wi ' i}! seal _ iy. i oa | : i i ~~ ~F * ih) nie a _ Tinie ote: i eed . Ne SS ee, ' : : H _ rf i ' : 7 4 ; " wy ieee a Fy Chae ae me tae | /. f 4 1 7 Deh ‘Joy ha lim ay : F : i 1 ' i] - a 7 Wj il ey) ‘al Mk i : i; uy iy M) : _ ¥ : 7 i> 1 7 L ; : ” i 7 7 : i 1 : Li , i ; | { i - A) , 7 : i 7 ny ' | ; j a ya : 7 all ying DM par) : f : j Ad Ga ) an 7 eae | ah wr! : , Lay 7 ve iF a 7 e : y : ve -) iD ay Wines j he ri ut) » Pe | in ‘a 7 , iY 7 t 7 oh ' 1o“" e 7 : > - ha 7 ‘ A ry . ie i . 7 [i v in : 2 ‘ ; a 6 - - : Le ony a a 4p ma 1 : (4, ’ wea’ iy ¥ ~ : rat ’ y P ; f ne ny) yi aa we _ 77 " p*¢ ; t : rr! a | —: | - ra ce rie a : ; -" \, wi ‘BY, f a o ty ' il ' i ave 1. a Ms ¥ : ri a! 4 | rf ay 1G ir tar 1) ier i ¥ ; hae , mA : . = | ry ny ; ' ) ie A o* | ai mM wT i : 2" i a ; ma a : : De ' : i ; i { ' ne 7 7 ri ne # : 7 7 J ' Ve. p iis i : fl : Se ; ; Erick - b | i! a8 i) aul 1 A | : @> asi 7) al i ! an ’ 7 TR 4. a a \. ieee I i y : Bid he : a ' se ‘) f Dy: Al a i 5 i} - a _ ; Tf ¥ _ . if. av 14 7 aa aes 7 : . 7 : Bit ‘ i) ! 14 =» ! ‘a ; w & 7 «f : 4 rh i » € 7 j 1 " } ’ . t. " ” ne ey a a bey’, "a : 4 Dae ae > ea ia my i re | | y | ha rai. | ad ar ae ; are hie on ; f a : Lite { : 4 mas, ma : ¥ sf : an : } ty r q : Nt 2 © : Pi [ 7 > are 4h 7 ns a - 7 . q se : y) ; r i a0 q Ae 7 of ; a vA 1% ¥ 7 ie & iJ ' "WH Le Ue Fly fia’ ui oy ge : D4 ; oy : ] a | A) oS ‘ie a) : teen a yet { i : 7 ; : Y PAP). : ’ : it ’ tS ba Die 7 : Vay ni Ve Lari Oe, 7 . a 7 i oe ta | WR a0" ae 4 7 ; ‘ ' ' : ; : is mlb 7 B : 7 ‘1 ; ; _ i baa! / P ' r 2 : ass i i i i af 7 rk a 7 an - 7 7 7 ir 7 7 , i | PF : ss f ol 7 7 re +) Se : iL al Ss i ; | " iv) : uF wi r : if ' ; 7 . 7 , } P , y ; 1 I = ~ wae | 7 : . uv ok 4 ian 1 Vs 7 : : : is i ; a ; Va ; 7 I : ; ; 7 _ ‘ : i Ay - : ; So : : me THE CRUSTACEA OF NORTHUMBERLAND AND ~ , DURHAM By Canon/A! My Norman, M.A. D.C.L., LLD., F.RS., AND G!? STEWARDSON Brapy, M.D., LL.D., D.Sc., F.R.S. 4 —)) 4 A G . / A. “Zaxass REPRINTED FROM THE TRANSACTIONS OF THE NATURAL HISTORY SocitETY OF NORTHUMBERLAND, DURHAM, AND NEWCASTLE- UPON-TYNE.—NEW SERIES, VoL. III., PART 2 | “5 - FIT ere rere, oe ee es Ad ° t - Babu a> 5 4 a Kens is = § ow : ma” ‘ THE CRUSTACEA OF NORTHUMBERLAND AND DURHAM/ By Canon A. M. Norman, M.A., D.C.L., LL.D., F.R.S., AND G. STEWARDSON Brapy, M.D., LL.D., D.Sc., F.R.S. EIBA AR 20835 5- Si rie r| he = cate 4 > Fa oo ani: ee ia a ‘ ip 7 al $29 - | & * — ‘ci 7 - i ci WY fee a ‘ » 7 - i 4 : a he a j rs ype ak 4. : | y Le a 7 o> “sen 5 ney ze é ; i ni, ; - a it ~ hen . p ite 7 to ¥ : : 4 : , ba Toe | ee. i 3 : [| pone % ee — + - a 7 rel € yi - on ‘ a! ane , ys , oe a) “a - rat aad 7 a oe vy os Mi 7 a) a 7 - + G a 4 7 ; : i” : Ff i 7 + ne _ 7 Ee °F an he : 7 i \ : a = ro es a thy " —_ 7 7 7 r eu = = an 7 - io ; _ a i ’ ’ : - , a yee - | . tf he No Adee i 7 1 7 : § a "* \ Biome _ 7 ay 60) Sees a .” uA 7 _ a 7 - , i 7 aes ~ Be : My .S 3$- ne : } . ee > “rs a ng as ie we - Ure ot Gi Om = ; - - ‘ ’ vw t; 4) a re ik bal - : - ea a r= , 4 7% . , a ved 1 » “4 7 ms ‘ iv : @ f - a & '_ 7 ; 7 _ ; ] 1 @. Oe She oar n zs é 7 7. a a ye So - | Ow oe i nS | - 7 Sy 7 ey - - ‘ \ = ee, Ze io a 7 ue q - ft 7 7 7 ‘a . 7 bi : (hae iy ou 7 ’ = ‘ - - 7 a aad - 7 ~~ | = " . ee : - ra : A wae 0 a = - In . a 7 ? : an) = «= ¢: 7 ~ | . 7 : ; i oe 7 Unies oA a 7 ride 7 - ——- = _ enh at Na a : : ETT *@.? oD 42 ee : 7 #28 : "Cx, *% iN ay pee, — eo a 2 4 (—* : 7? - a | _ - ees ees a THE CRUSTACEA OF NORTHUMBERLAND AND DURHAM Bye CANON A; M. Norman, M.-A., D.C.L., LL.D., E-.R:S., AND G. STEWARDSON Brapy, M.D., LL.D., D.Sc., F.R.S. There were no very early students of the Crustacea in these northern counties, and we are not aware of any publications on the subject prior to 1832. The following notes supply a record of all observations and papers up to the year 1862-4, at which time a stimulus was given to the study of this and other branches of Marine Zoology by grants from the British Association. ‘These, with local contributions, enabled dredg- ing to be carried out by means of a steam-tug in the deeper waters which lie off the coast. The earlier papers referred to are as follows :— Johnston (George), “ Illustrations of British Zoology,” Loudon’s Mag. Nat. Hist., vol. v., 1832. p. 520; vol. vi., 1833, Pp. 40; Vol. vii., 1834, p. 253; Vol. vili., 1835, pp. 202, 494, 565, and 668; vol. ix., 1835, p. 80. These papers contained notices of the occurrence of various species of Isopoda, Amphipoda, and parasitic Crustacea, accom- panied by illustrations. Johnston (George), Zoological Journal, vol. iii., 1827, p. 176. Gammarus maculatus and G. dubius. Johnston (George), Proc. Berwickshire Naturalists’ Club, vol. i., 1834, “‘ Catalogue of the Cirrhipeda found on the coast of Berwickshire ”—6 species. Embleton (Robert), Proc. Berwickshire Nat. Club, vol. i., 1834, “Tist of Malacostracan Podophthalma found on the coast of Berwickshire and North Durham.” ‘Twenty- eight species are recorded, including description and figure of his new species Galathea nexa, = re] CRUSTACEA OF NORTHUMBERLAND AND DURHAM Baird (W.), Hist. Berwickshire Nat. Club, vol. ii, p. 145 (1845?), “ Arrangement of the British Entomostraca.” In this paper are a few records from Berwick Bay. Baird (W.), Hist. Berwickshire Nat. Club, vol. 11. (1845 ?), Caligus Strémi described. Hardy (James), Hist. Berwickshire Nat. Club, vol. iv., p. 212 (1845?), Pagurus Prideauxtat Leach. ‘Found in deep water off Burmouth, lodged in a curious domicile formed of a sponge (Halichondria suberea Johnston).” It seems probable that the species found was Pagurus cuanensis. Hancock (Albany), Trans. Tyneside Nat. Field Club, vol. i., 1850, and also Ann. and Mag. Nat. Hist., ser. 2, vol. iv., 1849, Pp. 305; pls. vill., ix., ‘‘ Notice of the occurrence on the British coast of a Burrowing Barnacle belonging to a new order of the class Cirripedia.” The species was named Alcippe lampas. Hancock (Albany), Trans. Tyneside Nat. Field Club, vol. iv., 1858, p. 17, and also Ann. and Mag. Nat. Hist., ser. 3, ‘vol. 1i., p. 443, describes the markings on the sand caused by the crawling of the two Amphipoda Swcator arenarius and Kyriyera arenaria ; which Crustacea are described by Spence Bate in the Tyneside Transactions immediately before the paper by Hancock at p. 15, and figured pl. ii, figs. 1 and 2. Norman (A. M.), Trans. Tyneside Nat. Field Club, :vol. iv., 1860, p. 326, pl. xvil., “On an undescribed Crustacean of the genus Mysis.” Norman (A. M.), Trans. Tyneside Nat. Field Club, vol. v., 1860, p. 143, pl. ui., “On species of Ostracoda found in Northumberland and Durham, new to Great Britain.” Hancock (Albany) and Norman (A. M.), Trans. Linn. Soc., vol. xxiv., 1863, p. 49, pls. xv., xvi., “On Splancnotrophus, an undescribed genus of Crustacea, parasitic in Nudi- branchiate Mollusca.” One of the two species, Sflanc- notrophus brevipes, had been taken on the Northumber- land coast. 4 CRUSTACEA OF NORTHUMBERLAND AND DURHAM From this date, when the dredgings, aided by grants from the British Association, were commenced, the Crustacea of the north-east coast began to receive more attention. The north-east coast of England is not favourable, at any rate in the littoral zone, to the development of the smaller marine animals; the swell which throughout so great a portion of the year beats on the rocky shores leaves little peace for the animals which should live there; while the almost total absence of sheltered bays or even nooks deprives the smaller Crustacea of suitable dwelling places. In years gone by Alder and Hancock made the rocks at Cullercoats famous by the number of interesting Nudibranchiate Mollusca which they discovered there. It is to be feared that they would not have been so successful had they worked there at the present time; the immense increase of population which has taken place north of the entrance to the Tyne, the sewage poured into the water, the vast amount of dredged mud carried out from the Tyne and deposited off shore have greatly changed the condition not only of the shore but of the neigh- bouring sea from which the Nudibranchs used to make their way landwards at the time of spawning. The North Sea, however, in its deeper parts is excellent dredging ground, whence additions to our fauna have been continually turning up, and where excellent work remains to be done by those who come after us. We give a comparative table of the Crustacea which have been found on the north-east coast, with those from such other parts of the coasts of Great Britain as have been efficiently worked to a greater or less degree. The authorities who are responsible for the several columns are as follows :— 1. Northumberland and Durham as in the Catalogue which follows. 2. “Notes on the Crustacea of the Channel Islands,” Canon A. M. Norman, Ann. and Mag. Nat. Hist., ser. 7, vol. xx., 1907, p. 356. wn CRUSTACEA OF NORTHUMBERLAND AND DURHAM 3. The Crustacea of Devon and Cornwall,” Canon A. M. Norman and Thomas Scott, LL.D., 1906. 4. “Fourth and Final Report on the Marine Zoology, Botany, and Geology of the North Sea,” Report Brit. Assoc., 1890, p. 457. In this report the higher Crustacea are reported on by Mr. A. O. Walker; the Ostracoda by Prof. G. S. Brady, Mr. A. Scott, and Dr. Chaster ; the Copepoda by Mr. I. C. Thompson; and the Cirripedia by Mr. Marratt. 5. “Fauna, Flora, and Geology of the Clyde Area, 1901.” The Crustacea are reported on by Thomas Scott, F.ESs 1p328. 6. “A Catalogue of the Land, Freshwater, and Marine Crustacea found in the Basin of the River Forth and its Estuary,’ by Thomas Scott, LL-D., F.L:S., Proc: Roy. Physical Soc. of Edinburgh, vol. xvi., 1906, p. 97 and p. 267. 7. “Last Report of Dredging among the Shetland Isles.” Crustacea by Rev. A. M. Norman, Brit. Assoc. Report (for 1868), 1869, p. 247. The marine species are filled in from this old report, as it is the only one of the fauna of the northern extremity of our Islands; a few additional species have since been discovered, but are not here included. The inland species, however, which have been observed by Dr. T. Scott and R. Duthie have been incorporated. ‘The account of these will be found in Reports of the Fishery Board for Scotland, Kills pe 74s eve, P. 2205 XV-, P. 327) seancduexya., ps 253. CRUSTACEA OF NORTHUMBERLAND AND DURHAM Crustacea of Northumberland and Durham compared with those of some other parts of the country and seas :— x a = a s = S D1 Se) gjss | 8 | salsslgsg eel ae leeq/2e| 22) 22 Ee8 §sQ/O8 (8G |e REE BES ee ale Ss BR) 24 Brachyura ... cad} Be 39 4! 27 29 19 18 Anomura 00 soo] Sil II 16 12 16 15 17 Macrura ost cod!) 2273 8) eX6) 32 22 2 18 20 Schizopoda_... soy} | 1¢l 18 29 16 25 26 II Stomatopoda ... | I 2 a — = ae Sympoda Seep 20) 0 49 3 17 31 21 12 Isopoda aor nod| er | G2 68 23 62 44 23 Amphipoda ... ---| 130 | 136 | 144 | 130 | 168 | 145 | 113 Branchiopoda— 1. Phyllocarida ... I — I I I — I 2. Phyllopoda vel — | I — _ — = 3. Cladocera olf) eke) — 34 2 51 54 37 4. Branchiura wef — | — — — I — Ostracoda... S6q| 1a 64- | 107 Boy | 142, | 032 99 Copepoda... s-<| LOS male Se 293 || T95) 9 |,2908 |) 306 70 Cirripedia _... 6 9/01 27 10 I2 13 6 637 | 387 | 808 | 513 | 855 | 794 | 427 The character of the fauna of the coasts of Northumberland and Durham is distinctly boreal, and much more northern than that of the same latitude on our western shores. As long ago as 1868 one of us wrote, “ The distribution of animal life around our coasts appears for the most parts to have followed the direction south, west, north, and east. It would seem that comparatively few (if any) southern species have made their way far north through the Straits of Dover, which may probably be accounted for by the fact that that channel has, geologically speaking, been only a short time open. As arule southern species are to be seen at a higher latitude on the western than they are on the eastern coasts. There are, however, some apparent, but only apparent ex- ceptions. ‘These consist of animals known on the north-east coast of Scotland, which we should not have expected to meet with there. On examining into the probable cause of their migration to this district, I am led to believe that they have 7 CRUSTACEA OF NORTHUMBERLAND AND DURHAM made their way thither round the western and northern, and down the eastern coasts to their present habitat, and not up the eastern coast, as at first might have been supposed. For example Cerithium perversum, Phastanella pulla, Fissurella ereca, Tellina balaustina, Callianassa subterranea, Palmipes placenta, Amphiura brachiata, &c., have been found in the Moray Firth, but are wholly absent on the east coast of England. Moreover many species have been recorded on the Norwegian coast though never found on the eastern shores of England, and therefore may be presumed to have migrated thither up the western side of Great Britain and round the north of Scotland; as examples of such species may be cited Pleurotoma striolata, attenuata and septangularts, Cerethiopsis tubercularis, Cerithium reticulatum and perversum, Rissoa vtolacea, Pholas dactylus, Solen vagina, Psammobia costulata, Gastrana fragilis, Lsocardia cor, Cardium aculeatum, Lepton squamosum, Xantho rivulosus, Portunus arcuatus, Gebta deltura, &c. On the other hand, while northern forms do not extend southward on the east coast beyond Yorkshire and the Dogger Bank, on the western coast they in many instances have a range southwards to the Nymph Bank off Cork, and even to the Mediterranean Sea.”* Forty years have elapsed since the above was written, and a continued study during that time of the distribution of animal life in the North Atlantic has fully confirmed the views expressed by the writer in the foregoing extract. If re- written now a few names therein quoted as Norwegian would be struck out as erroneously recorded; but the writer would on the other hand be able to add a large number of other species as illustrative of his views. Moreover he has during these years been able to establish a remarkable fact. It is that during the last months of the year, as also during the first months, that is apparently from November to March, enormous quantities of free swimming animals are often brought down from the north along the coasts of Scotland * Norman (A. M.) “Last Report of Dredging among the Shetland Isles,” Rep. Brit. Assoc. (for 1868), 1€69, p. 248. 8 CRUSTACEA OF NORTHUMBERLAND AND DURHAM and England; on many occasions as far as north York- shire. The species thus occurring are not known (or very rarely ?) at other times of the year, and the conclusion the writer arrived at was that at the period of the year mentioned there was a strong southerly current sweeping along our east coast. The Arctic forms’ which peculiarly distinguish this southerly migration are Clione limacina Phipps, Dhysanoessa longicaudata Kroyer, Wematoscelis borealis Norman, and Luthemisto compressa Goés. These conclusions, arrived at on purely zoological grounds, have received remarkable confirmation during the last two or three years from the physical researches of the Luternational Council for the Exploration of the Sea. By numerous and extended observations and experiments it has been clearly established that water which enters the North Sea through the Straits of Dover is very soon deflected from its northerly course, and flows eastwards to the continental portion of the area; and that on the other hand strong currents come from the north, along the western side of the channel; and not only so, but that the exact course of these southern-flowing waters, and also the amount of their salinity, varies at different seasons of the year. The following Crustacea of the orders Brachyura, Anomura, and Macrura, so well known in the south of our islands, are wholly absent from the north-east coast of England :— * Ebalia tumefacta Montagu. Thia polita Leach. Polybius Henslowt Leach. * Portunus arcuatus Leach. Bathynectes longipes Risso. Xantho floridus Montagu. . hydrophilus Herbst. Couchti Bell. Pilumnus hirtellus Pennant. Nautilograpsus minutus Linné. * The species in this list to which an * is prefixed have been recorded from the coast of Norway. 9 CRUSTACEA OF NORTHUMBERLAND AND DURHAM * Pinnotheres veterum Pennant. Mamaia sqguinado Herbst. Pisa tetraodon Pennant. biaculeata Montagu. Macropodia egyptia H. M. Edwards. Dromia vulgarts H. M. Edwards. Pagurus sculptimanus Lucas. Diogenes pugilator Roux. Faxea nocturna Chiereghin. Axius stirynchus Leach. Arctus ursus Dana. Falinurus vulgaris Latreille. Peneus caramote Risso. Crangon sculptus Bell. Alpheus ruber H. M. Edwards. macrocheles Hailstone. fTippolyte Prideauxtana Leach. Typton spongicola O. G. Costa. On the other hand the only species belonging to these higher Crustacea which live on the north- east coast but are unknown in the south of England are :— Lithodes maia Leach. Pagurus pubescens Kroyer. Anapagurus chiroacanthus Lilljeborg. ? Spirontocaris securifrons Norman. Gaimardi H. M. Edwards.f Pandalus borealis Kroyer. We are much indebted to Professor A. Meek for records of Amphipoda and other Crustacea, and to Mr. R. S. Bagnall for the result of his researches among the terrestrial Isopoda ; and also to Mr. R. A. Todd, who has added two important species to the local fauna, Calocarts macandree and Pandalus borealis. * The species in this list to which an * is prefixed have been recorded from the coast of Norway. + This species has not yet been found on the coasts of Northumberland and Durham, but may be expected to occur there, as Dr. Thomas Scott has recorded it from the Firth of Forth. LO CRUSTACEA OF NORTHUMBERLAND AND DURHAM The following initials are employed to indicate different collectors in the following report :— A. Mk=A. Meek. A. M. N=A. M. Norman. G. H=George Hodge. Gas. b— Gao brady. R. H=Richard Howse. The letters N. and D. after species imply that they have been found on the (“N”) Northumberland and (“D”) Durham coasts. CRUSTACEA Sup-Ciass I—DECAPODA Latreille Orper I—BRACHYURA Lamarck Secrion I—OXYSTOMATA H. Milne-Edwards Fam. 1.—LEUCOSIAD& EBALIA TUBEROSA (Pennant)=Z. Pennantit Leach=£. tsignis ; Lucas. Not uncommon in deep water off the coast. NED EpBaLiA CRANCHI Leach=Z. drscrepans Costa=&. Deshayestt Lucas=£. chiragra P. Fischer. More common than the last off the north-east coast. N.D. Fam. 2.—CORYSTID CORYSTES CASSIVELAUNUS (Pennant). The masked crab was repeatedly found by the late Mr. R. Howse cast up upon the strand in the neighbourhood of South Shields; common on the beach at Seaton Carew (G. S. B.); occasionally in great numbers in the bays of Northumber- land (A. Mk.). Nib ATELECYCLUS SEPTEMDENTATUS (Mont.)=Adelecyclus helerodon Leach. Occasionally found off our coasts in the coralline zone. N.D. 11 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Secrion Il.——CYCLOMETOPA BAM. x. POLY BIT PORTUMNUS LATIPES (Pennant)= Portumnus variegatus Leach. Two specimens dead on the sands at Whitley (J. Hancock) ; thrown up in large numbers on the sands between Hartle- pool and Black Hall Rocks, Sept., 1861 (A. M. N.). NED: Fam. 2.—PORTUNIDA Dana PoRTUNUS PUBER (Linné). Neighbourhood of Embleton, Northumberland(R. Embleton). Cullercoats, presented by Mr. Henderson, fisherman (New- castle Museum). Farne Islands, Newbiggin, Whitley, and not uncommon near the Longstone (A. Mk.). N. PORTUNUS CORRUGATUS (Pennant). “Tt has been found by Dr. Johnston in Berwick Bay, but is rare (Bell Brit. Crust. 9p. 196): N. PORTUNUS DEPURATOR (Linné)=P. Alicatus Risso. “Occasionally brought from deep water in Embleton Bay, adhering to the nets of the fishermen” (R. Embleton). Sunderland, from trawlers (G. S. B.). NED: PORTUNUS MARMOREUS Leach. Occasionally met with in the same manner as the preceding (R. Embleton). As Mr. Embleton does not include P. holsatus in his list, it is not unlikely that that species may have been mistaken for the present one. N. PORTUNUS HOLSATUS (Fabricius)=P. dudius Rathke. Frequent in 2-8 fathoms, and occasionally in rock-pools, Ryhope and Seaton Carew (G. S. B.) D: PoRTUNUS PUSILLUS Leach. Common in the coralline zone. Neb: Fam. 3—CARCINIDA CARCINUS M/ENAS (Pennant). Everywhere on the coast. N;D: I2 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Fam. 4.—CANCRIDZ& CANCER PAGURUS Linné=C. fimbriatus Olivi. Common. N.D. PERIMELA DENTICULATA (Montagu). A specimen, taken at Whitburn March 1845 by Rev. G. C. Abbs, was in Mr. John Hancock’s collection. D. SecTIon III .—CATAMETOPA Fam. PINNOTHERIDE PINNOTHERES PISUM (Linné). The Pea-crab occurs on our coast chiefly in mussels, but has also been found in Levicardium norvegicum. “ By no means uncommon in the mussels obtained at Holy Island and also at Eyemouth” (R. Embleton). Whitburn, 1847, found by Rev. G. C. Abbs and in the collection of the late Mr. John Hancock. In mussels from the mouth of the Tees (G. H.). Druridge Bay (A. Mk.). N.D. Secrion IV.—OXYRHYNCHA Fam. 1.—MACROPODIIDAi INACHUS DORSETTENSIS (Pennant)= Cancer scorpio Fabricius. Not common, yet frequently met with in deeper water off the coast. N.D. INACHUS DORYNCHUS Leach. This species seems to be more common than the last in the coralline zone, and has also occurred between tidemarks. N.D. MACROPODIA ROSTRATA (Linné)=Séenorhynchus phalangium Bell. Frequent in deep water. N.D. MACROPODIA LONGIROSTRIS (Fabricius) = Stenorhynchus tenuirestrts Bell. Much rarer than the last, Embleton Bay (R. Embleton) ; 25-30 fathoms off Seaham (G. H.); off Cullercoats and from Beadnell (A. Mk.). N.D. 13 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Fam. 2.—HYAD/& HyAs ARANEuS (Linné). Common in the laminarian and shallower water of the coralline zone. NED: Hyas coarcratus Leach. Frequent in deep water. ND: EURYNOME ASPERA (Pennant). This is Lurynome scutellata Risso, Lurynome boletifera Costa, and Lurynome tenutcornis Malm. Rather scarce, dredged off Holy Island in 1864 (A. M. N.). Off Seaham (G. H.). Not uncommon in deep water off the Durham coast (G. S. B.). IND: OrbDER I].—ANOMURA RAM. 111. EOE DAs LITHODES MAIA (Linné). The Northern Stone Crab is captured in the trawls, and also brought in occasionally by the long line fishermen, who draw it up together with many other naturalist’s “spolia opima” attached to their hooks. N.D. Fam, 2.—PAGURIDA& PAGURUS BERNHARDUS (Linné). — Very common. N.D. PAGURUS PUBESCENS Kroyer=/fagurus Thompsoni Bell. Common in deeper water. : NED: PAGURUS CUANENSIS W. Thompson. Rather rare off Northumberland in 1863 and 1864; 7-25 fathoms off Seaham Harbour (A. M. N.); off Ryhope 13-15 fathoms (G. S. B. and G. H.); off South Shields (R. H). N.D. ANAPAGURUS L&VIS (W. Thompson). Off Berwick and other parts of Northumberland coast; and not uncommon in 25 fathoms about six miles off Seaham Harbour (A. M. N.) N.D. 14 CRUSTACEA OF NORTHUMBERLAND AND DURHAM ANAPAGURUS HyNDMANN1 (W. Thompson). Off Berwick and other parts of the Northumberland coast (A. M. N.); 8-10 miles off Seaham Harbour (G. H.); ro-15 miles off Ryhope (G. S. B. and G. H.) N:D. ANAPAGURUS CHIROACANTHUS (Lilljeborg). 1855. Pagurus chiroacanthus, Lilljeborg, Hafs-Crustaceer vid Kullabergi Skane. Ofvers. Kong. Vet.-Akad. HORM Aro. 12) NGs 3950555.) Pe Elo 1861. Pagurus ferrugineus, Norman, Contributions to British Carcinology. Ann. and Mag. Nat. Hist., ser. 3, vol. viii (p. 1 separate copy), October, pl. xiii., figs. 1-3. 1896. Anapagurus chiroacanthus, Bouvier, Les Pagurinés des Mers d’Europe. La Feuille des Jeunes Naturalistes, 3me série, 26me année, p. 8, figs. 40, 41. Off Holy Island and Dunstanburgh, 1864 (A. M.N.) N. Fam. 3.—PORCELLANIDE PORCELLANA PLATYCHELES (Pennant). Common under stones between tidemarks. D.N. PORCELLANA LONGICORNIS (Linné). 1857. Porcellana priocheles, Kinahan, Natural Hist. Review, vol. iv., Proc. of Societies, p. 84. Common in similar situations to the last, and among the roots of Zaminari@, and also dredged in 20-30 fathoms. N.D. Fam. 4.—GALATHEIDA&£ GALATHEA STRIGOSA (Linné). Seven inches long off Cullercoats (J. Hancock); common at Embleton (R. Embleton); Bamburgh (G. 5S. B.); Seaham (G. H. and A. M. N.) N.D GALATHEA SQUAMIFERA Leach. Four and three-quarter inches long, Cullercoats (John Hancock); Berwick and Embleton (R. E.); South Northum- berland (A. M. N.); Whitburn (G. S. B.); Seaham (G. H.) ae I ur CRUSTACEA OF NORTHUMBERLAND AND DURHAM GALATHEA NEXA R. Embleton. Of this species, originally described by Mr. R. Embleton, three specimens were taken by him at Berwick and one in Embleton Bay. Whitburn, and in cods’ stomachs at Hartle- pool (A. M. N.); Seaham (G. H.); Skate Roads (A. Mk.) N.D. GALATHEA INTERMEDIA Lilljeborg. 1851. Galathea intermedia, Lilljeborg, Norges Crustaceer. Ofers. K. Vet.-Akad., Forhand,, p. 21. 1857. Galathea Andrewsii, Kinahan, Nat. Hist. Review, vol. iv., Proc. Soc., p. 157,,as G. mexa, and p. 228, pl. xvi., figs. 8 a-d. as G. Andrewsit. 1861. Galathea Andrewsi?, Kinahan, Brittannic Species of Crangon and Galathea. Trans. R. Irish Acad., vol. XXiv., p. 95, pl. xi., figs. za, za, ga, and pl. xii. 1869. Galathea intermedia, Norman, Last Report Dredging Shetland Isles, Brit. Assoc. Rep. for 1868, p. 264. 1882. Galathea Giardi?, Th. Barrois, Cat. Crust. Podophth. et Echinodermes 4 Concarneau, p. 22, fig. 2. 1888. Galathea Parrocel?, Gourret, Revis. Crust. Podopth. Marseille. Annales Mus. Marseille. Zool., p. 110, pl. vi., figs. 11-24. 1888. Galathea intermedia, J. Bonnier, Les Galatheidz des Cotes de France. Bull. Sci. de France et Belgique, VOM XIX. D. 44, Dl ck eS. 4, 2, Plot, ties. 114. The paper last referred to gives full synonymy and descrip- tions of the European Galatheide. Cullercoats (J. Alder); off Berwick and other parts of the coast of Northumberland, 1862-4 (A. M. N.); Whitburn (G; S..B) aseaham (Ge He): ND: GALATHEA DISPERSA Bate. 1858. Galathea. dispersa, Bate, Jour. Linn. Soc. Zool., ViOle Wiis Oemae 1862. Galathea disfersa, Kinahan, Brit. spec. Crangon and Galathea. Trans. R. Irish Acad., vol. xxiv., p. 99, pl. xiii. 16 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1863. Galathea nexa, Heller, Die Crustaceen des siidlichen Europa, p. 191, pl. vi., fig. 4 (not fig. 3). 1888. Galathea dispersa, J. Bonnier, Galatheidz des cotes de France. Bull. Sci. de France et Belgique, vol. xix., p- 68, pl. xiil., figs. 1-3. Off different parts of Northumberland, 1862-4 (A. M. N.); Cullercoats (J. Alder) ; Seaham (G. H.). N-D: MUNIDA BAMFFIA (Pennant) = A/wuida rugosa Fabricius= Munida Rondeletit Bell. The date of Pennant’s specific name is 1777, and that of Fabricius 1787. Very large, eight inches long, Northumberland (J. Hancock) ; Cullercoats (J. Alder); Embleton, not uncommon (R. E.); frequent in deep water (A. M. N.); St. Mary’s Island (A. Mk.). ND: OrpER II].—MACRURA Fam. 1.—CALLIANASSIDA UPOGEBIA STELLATA (Montagu)=Gebza deltura Leach. Two specimens are in the Newcastle Museum from the Northumberland coast (J. Alder); Whitburn (Mr. Abbs fide J. Hancock). N.D: Fam. 2.—CALOCARIDE CALOCARIS MACANDRE& Bell. Dredged by Mr. R. A. Todd (International Fisheries Investigation), July 26, 1907, on mud in 57 fathoms E.N.E. of the Coquet Lighthouse. N. Fam. 3.—ASTACIDA& ASTACUS PALLIPES Lereboullet. In the rivulets to the south of Berwick Bay (R. Embleton) ; the Pont near Ponteland, and near Bedlington (John Hancock) ; tributaries of the Tyne, specimens in Newcastle Museum from Whittle Dene near Ovingham (E. L. Gill). N. 17 B CRUSTACEA OF NORTHUMBERLAND AND DURHAM Fam. 4.—HOMARID# HoOMARUS GAMMARUS (Linné). Common. N,D. NEPHROPS NORVEGICUS (Linné). Taken abundantly by the trawlers off the coast. ND: Fam. 5—CRANGONID CRANGON TRISPINOSUS Hailstone. A single specimen taken in the harbour at Holy Island in 3 fathoms, 1862 (A. M. N.); Whitburn sands, July, 1862 (GOSo BS: N. CRANGON FASCIATUS Risso. A single specimen dredged in shallow water within the Farne Islands in 1864 (A. M. N.)—but as the difference between this species and C. neglectus (G. O. Sars) was not recognised in 1864, the latter may have been mistaken for the former. NG CRANGON NEGLECTUS G. O. Sars. Young specimens dredged in sandy bays of Northumber- land (A. Mk.). N. CRANGON BISPINOSUS (Hailstone). Stomachs of haddock; 40-50 miles E. by N. from Tyne- mouth, 40 fathoms ; off Berwick and off Durham coast, 1864 (AS MAN): ND: CRANGON VULGARIS (Linné). In all sandy bays. NAD: CRANGON ALLMANI Kinahan. 1857. Crangon Allmant, Kinahan, Nat. Hist. Review, vol. iv., Proc. Societies, p. 80, and woodcuts. 1861. Stetrvacrangon Allmani, Kinahan, Brit. Species Crangon and Galathea. Trans. Roy. Irish Acad., VOl. XXiVe, (Ds 65, pl. itl. Off Berwick in 26-46 fathoms, and off other parts of Northumberland and Durham, 1862-1864 (A. M.N.) N.D. 18 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PoNTOPHILUS sPpINosus Leach. Frequently taken in 1862-64 off the Northumberland coast, and also 20 miles E. by S. from Tynemouth in 35 fathoms (A. M. N.) N7D: Fam. 6.—ALPHEIDA ATHANAS NITESCENS (Montagu). Cullercoats (J. Alder). N. Fam. 7.—HIPPOLYTIDA SPIRONTOCARIS SECURIFRONS (Norman). 1862. Hippolyte securifrons, Norman, Trans. Tyneside Nat. Field Club, vol. v., p. 267, pl. xii., figs. 1-7. Off the coasts of Northumberland and Durham, frequent, 1862-64 (A. M. N.) N.D. SPIRONTOCARIS PUSIOLA (Kroyer). 1843. Hippolyte pusiola, Kroyer, Monog. fremstilling af Slegten Hippolyte’s Nordiske Arter, p. 319, pl. ii., figs. 69-73. 1857. Hippolyte pustola, Kinahan, Nat. Hist. Review, vol. iv., Proc. Societies, p. 159, pl. 1x., fig. 2 a—c, pl. x. figs. 9, 10. Cullercoats and off Northumberland, 1862-63 (A. M. N.); off Ryhope and Seaham (G. H.) ND: HIPPOLYTE VARIANS Leach. Cullercoats, Seaham, and Hartlepool; off Durham and Northumberland coasts, 1862-64 (A. M. N.); Newbiggin and Whitburn (G. S. B.); off Ryhope (G. H.) N.D. Fam. 8.—PANDALID® PANDALUS BOREALIS Kroyer. 1835. Pandalus borealis, Kroyer, Naturhist. Tidssk., vol. ii, p. 255, and 1845, Anden Reekkes, vol. i., p. 461—Voyages en Scandinavie, &c., pl. vi., fig. 2 a-o. 1851. Pandalus borealis, Brandt(F.), Middendorff Siberiske Reise, vol. ii., p. 122. 19 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1879. Pandalus borealis, Smith (S. 1), “ Stalk-Eyed Crustacea Atlantic Coast of North America,” Trans. Connect) Acadssvol.1., p36. 1899. Pandalus borealis, Sars (G. O.), “ Account Post- embryonic Development of avdalus borealis,” Rep. Norweg. Fishery and: Marine Investigations, vol. i., pls. i-x. Mr. R. A. Todd has added this very fine Macruran to our fauna. About twenty specimens were taken by the “ Huxley ” on a muddy bottom in 57 fathoms E.N.E. of the Coquet Light, July 26, 1907, in company with Ukko Turton?, Calocaris macandree, Spirontocaris securifrons, &c. Pandalus borealis has a wide circumpolar distribution. It is found in the Arctic seas from Greenland in the west to the Kara Sea and Murmar coast in the east. It is met with on the Norwegian coast, and as far south as the Kattegat; on the north-east coast of America as far south as Massa- chusetts Bay ; and in the Pacific off the Island of Unalaska and in the Sea of Okhotsk. N. PanpaLus Montracu! Leach=FP. annulicornis Leach. Common. N.D. PANDALINA BREVIROSTRIS (Rathke). 1843. Pandalus brevirostris, Rathke, Beitrage zur Fauna Norwegens, p. 17. 1850. Pandalus Feffreystt, Bate, Notes Fauna of Swansea, Appendix, pl. iv., fig. 2, and 1859, Nat. Hist. Review, VOl. WA. aeTOC: SOC: Pa lOO, ue. 1. 1853. [Hippolvte Thompson, Bell, Brit. Stalk-eyed Crustacea, p. 290. 1861. Pandalus Thompsont, Norman, Contrib. British Carcinology. Ann. and Mag. Nat. Hist., ser. 3, vol. viii., p- 7 (separate copy), pl. xiv., figs. 3-9. 21862. Pandalus Rathker, Heller, Untersuchungen Litoral- fauna Adriatischen Meeres. Sitzungsb. K. Akad. Wissensch.; vole xvi... p. 447, pl. ii. to.sor- 20 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 21863. Pandalus brevirostris, Heller, Crustaceen des siidlichen Europa, p. 247, pl. viil., fig. 9. ? 1883. Pandalus brevirostris, A. Milne-Edwards, Recueil de figures de Crustaces nouveaux ou peu connus. 1899. Pandalina brevirostris, Calman, On the British Pandalide. Ann. and Mag. Nat. Hist., ser. 7, vol. iii., p- 37, pl. i-iv., fig. 4. We do not feel sure that the species figured by Heller and A. Milne-Edwards is the same as that of Rathke ; the spines on the underside of the rostrum are represented as of much larger size than those which characterize the latter species. In dredgings off Northumberland and Durham, 1862-64 (A. M.N.); Seaham, 22 fathoms (G. S. B.); Ryhope, 10-15 fathoms (G. H.) N.D. Fam. 9—PALASMONIDAE PAL#MON SERRATUS (Pennant). A specimen in the British Museum from Berwick presented by Dr. Johnston (see List Specimens of British Animals in Brit. Mus. Crustacea. 1856, p. 42). N. PALAMON SQUILLA Leach. In pools in the bay on the north side of Holy Island, &c. (R. E.); Cullercoats (John Hancock); Whitburn (G. S. B.); Beadnell (A. Mk.) N.D. PALEMONETES VARIANS (Leach), Port Clarence and Hartlepool (A. M. N.); Hylton Dene (Gas. Bs) D. OrpbER I1V.—SCHIZOPODA The following works may be consulted with respect to the Mysidea. 1. Sars (G. O.). Carcinologiske Bidrag til Norges Fauna. 1. Monographi over Mysider, pts. i. and ii., Det. Kongl. Norsk. Videnskabss. 1 Trondhjem, 1870-2, and pt. iii, Universitets-Program. Christiania, 1879. 21 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 2. Sars (G.O.). Nye Bidrag til Kundskaben om Middel- havets Invertebratfauna, I. Middelhavets Mysider (Archiv for Mathem. og Naturvid., 1876). 3. Norman (A. M.)._ British Schizopoda of the Families Lophogastride and Euphausiide (Ann. and Mag. Nat. Hist., ser. 6, vol. ix., 1892, p. 454), and British Myside, a family of Crustacea Schizopoda (Ann. and Mag. Nat. Hist., ser. 6, vol. x., pp. 143 and 242). A description of all British species known up to 1892 is to be found in these last papers. Section I—EUPHAUSIACEA Fam. 1.—EUPHAUSIIDA: THYSANOESSA LONGICAUDATA (Kroyer). 1849. Thysanopoda longicaudata, Kroyer, Voyages en Scandinavie etc., Crust., pl. vill., fig. 1 a-f. 1882. Zhysanoessa tenera, G. O. Sars, “ Oversigt af Norges Crust. I.” (Christ. Vidensk. Forhand.), p. 53 (separate copy), pl. i, figs. 18, 19. 1887. Zhysanoessa longicaudata, H. J. Hansen, Overs. over det vestlige Gronlands Fauna af malak Havs- krebsdyr (Vidensk. Middel. fra den naturf. Foren. i Kjobh.), p. 54 (separate copy). 1892. Thysanoessa longicaudata, Norman, Ann. and Mag. Nat. Elst: ser, 6, vol. 1x.,,p. 402,and 447, Pla xix. fics. 15). Off Berwick, 1864 (A. M. N.); one young specimen from the Inner Farne Islands, 1898 (A. Mk.) N. PERIOCULODES LONGIMANUS (Bate & Westwood)= Wonoculodes Grubet Boeck=Monoculodes equimanus Norman, MS., D. Robertson. Off Marsden, ro fathoms (A. M. N.); Druridge Bay and 5-6 miles off Souter Point, 30-50 fathoms (A. Mk.) N-D: PONTOCRATES ARENARIUS (Bate). 1889. Lontocrates arenarius, Hoek, Crustacea Neerlandica Mey P26, pl. 1X5, 19.17 1906. Pontocrates arenarius, Norman and Scott, Crustacea of Devon and Cornwall, p. 68, pl. vi., figs. 1-4. Pontocrates arenarius has not as yet been found in Norway. The species which Sars figures under that name (Supplement, pl. vi., fig. 2, pl. vil., fig. 1) must bear the name ontocrates norvegicus Boeck. As far as our observations go the latter species is more generally met with on our coasts than P. arenarius. Hoek, on the plate referred to, has given an excellent figure of the second gnathopod of P. arenarius, the carpus of which is rounded at its extended point, whereas in P. norvegicus it is hollowed like a little spoon (Sars, Supp., pl. vi., fig. 2); there is still greater difference in the first gnathopod, which in avenarius has a very oblique palm (as in P. altamarinus, see Sars, Supp., pl. vii., fig. 2), whereas 61 CRUSTACEA OF NORTHUMBERLAND AND DURHAM in P. norvegicus it is scarcely at all oblique (Sars, Supp., pl. vi., fig. 2). Figures of this and allied forms are given in the “Crustacea of Devon and Cornwall.” Whitburn in sand between tidemarks (John Hancock and G.S. B.); Howden (G. Hand A. M2 N-) ND: PONTOCRATES ALTAMARINUS (Bate). 1906. Pontocrates altamarinus, Norman and Scott, Crust. Devon and Cornwall, p. 69, p. vil., figs. 1-4. One hundred miles off Tynemouth in 25-30 fathoms (A. M.N.) IN. SYNCHELIDIUM HAPLOCHELES (Grube). 1906. Synchelidium haplocheles, Norman and Scott, Crust. Devon and Cornwall, p. 67, pl. vi., figs. 7-9. A. M.N. in his paper ‘A Month on the Trondhjem Fiord” (Ann. and Mag. Nat. Hist., ser. 6, vol. xv., 1895, p. 486) gave reasons for regarding A7véyera brevicarpa B. & W. and Synchelidium brevicarpum Sars as synonyms of this species, and substituted the name P. ¢enutmanum Norman for the Syachelidium haplocheles of Sars. | Inner Farne Islands, Alnmouth, Druridge Bay, Blyth Bay, and Cullercoats (A. Mk.) N: HALIMEDON PARVIMANUS (Bate and Westwood). This is Westwoodia cecula and W. hyalina Bate, @diceros parvimanus B. & W., and Halimedon Muelleri Boeck (see Norman, Notes on British Amphipods, Ann. and Mag. Nat. Hist., ser..6, vol. iii., p. 455, pl. xx., figs.. 10-14). Near Holy Island, 40-100 miles E. of Tynemouth in several dredgings, 7 miles off Seaham, 25 fathoms (A. M.N.); in dredgings in 21-39 fathoms off Souter Point (A. Mk.) ND: Fam. 10.—PLEUSTIDZ NEOPLEUSTES BICUSPIS (Kroyer). This is not Pherusa bicuspis B. & W., but the species which was recorded in 1865 (Nat. Hist. Trans. Northumberland, Durham, and Newcastle, vol. i., p. 24) under the MS. name which Spence Bate had given to the specimens sent to him 62 CRUSTACEA OF NORTHUMBERLAND AND DURHAM “ Calliope bidentata.” It seems to be a common form along the east coast of Great Britain. ; Forty to a hundred miles E. of Tynemouth, 25-40 fathoms, 1862 (A. M. N.), fishing boats, Cullercoats (J. Wright) ; trawlers, Sunderland (G. S. B.); off Seaham, 25-30 fathoms (G. H.); 45 fathoms 52 miles E.N.E. off Tyne, off Souter Point, and off Blyth, 22 fathoms (A. Mk.) N.D. SYMPLEUSTES LATIPES (M. Sars) = Calliope Osstant and fingallt Bate. Cullercoats (J. Alder and A. M. N.); trawlers, Sunderland (G. S. B.); 40 fathoms off Seaham (G. H.); 16-17 miles off Souter Point, 30 fathoms (A. Mk.) N.D. Fam. 11.—EPIMERIID EPIMERIA CORNIGERA (Fabricius) = Acanthonotus Owenti B. & W. Near Holy Island 35-50 fathoms, 3-50 miles off Tyne- mouth, and off Durham coast (A. M. N.); 25 miles off Aln- mouth 50 fathoms and Berwick Bank 27 fathoms (A. Mk.) NED: Fam. 12.—IPHIMEDIID& IPHIMEDIA OBESA H. Rathke. Cullercoats, fishing boats (J. Alder and A. M. N.); off Northumberland and Dogger Bank, and off Durham coast, 1862 (A. M. N.); Sunderland, trawlers (G. S. B.); off Alnmouth and off Souter Point (A. Mk.) int BS ODIUS CARINATUS (Bate)=Otus carinatus Bate. A specimen taken on gravelly ground in 46 fathoms 1o miles off Berwick Bay, 1863 (A. M. N.) Ne Fam. 13.—TIRONIDZ& TiRON ACANTHURUS Lilljeborg. This is Syrrhoe bicuspis Goes and Tessarops hastata Norman (Crustacea Amphipoda New to Science or to Britain, Ann. and Mag. Nat. Hist., ser. 4, vol. ii., 1868, p. 412, pl. xxii. figs. 4-7). 63 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Off Durham coast, 1862 (A. M. N.); about five miles off Souter Point, 30 fathoms (A. Mk.) 1D} ARGISSA HAMATIPES (Norman). 1869. Syrrhoe hamatipes, Norman, Last Report Dredging among the Shetland Isles. Brit. Assoc. Rep. for 1868, De 27Oe 1870. Argissa typica, Boeck, Crust. Amphip. Borealia et Agchiea, p. 45. 1890. Chimeropsis danica, Meinett, Videnskab. Udbytte Kanonbaden ‘“ Hauchs” ‘Togter, Crust. Malacos., p. 167, pl. u1., figs. 42-47 2. 1891. Argissa typica, G. O. Sars, Crust. Norway, Amphip., p- 141, pl. xlviii. In several dredgings off Northumberland and Durham in 39-59 fathoms (A. Mk.) NED: Fam. 14.—EUSIRIDAE EusIRUS LONGIPES Boeck=Z. helvetie Bate. Deep water E. of Tynemouth, 1862, off Berwick, 1868, near Holy Island, 35-50 fathoms, 1864 (A. M. N.) N. Fam. 15.—CALLIOPIIDA: APHERUSA BISPINOSA (Bate). Cullercoats (J. Alder and A. M. N.); seven miles E. by S. from Tynemouth, 25 fathoms (A. M.N.); off Seaham, 25-40 fathoms (G. H.); low water, Sunderland, and 25 miles off Tynemouth (G. S. B.); off Blyth, 22 fathoms (A. Mk.) N.D. APHERUSA BOREALIS (Boeck). Tidemarks, Boulmer, and Cullercoats, Northumberland (G.2 Serb.) N; APHERUSA CLEVE! G. O. Sars. 1904. Apherusa Clevet, G. O. Sars, “On a new planktozic species of the genus Apherusa (Conseil permanent international pour l’exploration de la Mer. Publications de circonstance, No. 1o).” In 22 fathoms off Blyth (A. Mk.) IN: 64 CRUSTACEA OF NORTHUMBERLAND AND DURHAM APHERUSA JURINI (H. Milne-Edwards). This is Amphithoe norvegica Rathke and Pherusa fucicola Bate partly (see Walker, Ann. and Mag. Nat. Hist., May, 1891, p. 418). Cullercoats (J. Alder); 5-6 miles off Souter Point, 30 fathoms (A. Mk.); four miles off Tynemouth in 27 fathoms (G.15-.B.) N.D. CaLLiopius RaTHKeEt! (Zaddach). Common between tidemarks. N.D. CALLIOPIUS LAVIUSCULUS (Kroyer). Occasionally taken between tidemarks. We cannot regard the last as distinct from the present species(A. M. N.) N.D. Fam. 16.—ATYLIDZ NororroPpis SWAMMERDAMII (H. Milne-Edwards). Abundant between tidemarks. Ne: NOTOTROPIS FALCATUS (Metzger). Alnmouth, 1899 (G. S. B.); not uncommon on the sand outside of the rocks at Cullercoats and Druridge Bay (A. Mk.) Mr. Meek makes the following interesting statement, “ The modified first pair of pereeopoda are used to grasp fragments of shell. Most frequently two pieces of shell are taken and grasped by the modified appendages. he animal has then the appearance of lying in a bivalve shell—the fragments of shell coming pretty close together dorsally. The active movements of the apparent bivalves betray, however, their crustacean occupant to the observer.” N: NOTOTROPIS VEDLOMENSIS (Bate). Near Holy Island, 35-50 fathoms; 40-50 miles E. by N. from Tynemouth, 40 fathoms (A. M. N.). Two miles off Cullercoats (A. Mk.); off Souter Point, 1904 (G. S. B.) N.D. Fam. 17.—DEXAMINID® DEXAMINE SPINOSA (Montagu). This species seems to be rare on the east coast, while it is common on all the other shores of Great Britain. Cullercoats and Druridge Bay (A. Mk.) N. 05 CRUSTACEA OF NORTHUMBERLAND AND DURHAM DEXAMINE THEA Boeck=J. ¢enuicornis Bate (not Rathke). Among weeds at low water, Sunderland (G. S. B.) D: TRITATA GipBosa (Bate)=Atylus gibbosus Bate. Parasitic in sponges, Cullercoats, Oct. 5, 1864 (A. M. N.) N GUERNEA COALITA (Norman). 1868. Hellerta coalita, Norman, Crustacea Amphipoda New to Science or to Britain. Ann. and Mag. Nat. Hist. ser,4; vol. ii; ‘p46, pl. xxil.) fig. 6, and pl. xxi, figs. 1-6. 1887. Guernea coalita, Chevreux, Crustacés Amphipodes de la cote ouest de Bretagne, p. 15, woodcuts 1, 2 (separate copy). 1887. Guernea levis, Chevreux, ibid, p. 41. 1887. Prianassus Nordenskioldi, H. J. Hansen, Oversigt over det vestlige Gronlands Fauna af malakostrake Havskrebsdyr. Vidensk. Middel. fra den Naturh. Foren. i Kjobenhavn, p. 82, pl. ii; figs. 7-7e, and pl. iii, figs. I-IC. 1893. Guernea coalita, Della Valle, Fauna und Flora des Golfes von Neapel, Gammarini, p. 570, pl. xxxi., figs. 20-33. pl. Iviil., fig. 80. Surface nine miles N.E. of the Longstone (A. Mk.); off Souter Point (G. S. B.). This species is now known to have a wide range from West Greenland (H. J. Hansen) and Franz Joseph Land (Stebbing) to Naples (Della Valle). N.D. Fam. 18.—MELPHIDIPPIDA MELPHIDIPPELLA MACRA (Norman). 1869. Atylus macer, Norman, Last Report Dredging Shetland. Brit. Assoc. Rep. for 1868, p. 280. 1870. Melphidippa longipes, A. Boeck, Crust. Amphip. Bor. Et -ATCinpa tL 30. 1876. Melphidippa longipes, Boeck, De Skand. og Arct. Amphip., p. 414. pl. xxiv., fig. 5. 600 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1889. Melphidippa macra, Norman, “Notes on British Amphipoda.” Ann. and Mag. Nat. Hist., ser. 6, vol. iv., p. 121, pl. x., fig. 14, and pl. xii., figs. 4-7. 1894. Melphidippella macera, G. O. Sars, Crust. Norway, Amphip., p. 488, pl. clxxi. In several dredgings 23 to 17 miles off Souter Point, 21-39 fathoms (A. Mk.) BD; Fam. 19.—GAMMARID AMATHILLA HOMARI (Fabricius)=Amathilla Sabint Bate= Grata imbricata Bate (the young). Very common in rock pools and between tidemarks, as well as in shallow water. We cannot see specific difference between A. angulosa and the young of this species, of which Graia imbricata Bate is a still younger condition. N.D. GAMMARUS MARINUS Leach. Ryhope, tidemarks (A. M. N.); Sunderland (G. S. B.); common on the coast (A. Mk.) N.D. GAMMARUS LocusTA (Linné). Abundant between tidemarks and in lammarian zone. Nee GAMMARUS DUEBENI Lilljeborg. 1889. Gammarus locusta var. C. Hoek, Crustacea Neerlandica 1i., p. 50, pl. x., fig. 13. 1889. Gammarus campylops, Norman, Notes on British Amphipods. Ann. and Mag. Nat. Hist., ser. 6, vol. iv., p- 139, pl. xii., fig. 13. We follow Sars here in using Lilljeborg’s specific name, but we are by no means convinced that the species is not the G. campylops of Leach. Brackish water, Bamburgh, and Hartlepool Slake(A.M.N.); common in the Coquet about a mile from the mouth of the river ; in a drain flowing into the Blyth (A. Mk.) N.D. GAMMARUS CAMPYLOPS (Leach) G. O. Sars. One specimen from the river Blyth (A. Mk.) N. 07 CRUSTACEA OF NORTHUMBERLAND AND DURHAM GAMMARUS PULEX (De Geer). In lakes and streams everywhere. N-D: NIPHARGUS SUBTERRANEUS (Leach). 1863. Wiphargus aquilex, Bate and Westwood, Brit. Amphip., vol. i., p. 315. 1900. Wiphargus subterraneus, Chilton, The Subterranean Amphipoda of Great Britain. Jour. Linn. Soc., Zool., VOl. XXVillen D2yl47, DIS. XVlege kvile oti Caer It is also Gammarus puteanus Koch and Wiphargus stygius Westwood. The late Mr. R. Howse gave me a specimen of this species in 1893, which had come from a well in West Hartlepool (A. M.N.) D. MELITA oOBTUSATA (Montagu) = Melita proxima Bate = Megamera Alderit Bate 8. Near the Dogger Bank, 1862; fishing boats, Cullercoats, 1864 (A. M. N.); 25 miles off Alnmouth, 59 fathoms, and 30 miles off the Farnes, 42 fathoms (A. Mk.) N. MELITA DENTATA (Kroyer). 1889. Metita dentata, Norman, Notes on British Amphipoda. Ann. and Mag. Nat. Hist., ser. 6, vol. iv., p. 135, pl. xil., figs. 8-10. Three specimens taken from fishing boat at Cullercoats (A. M. N.); 25 miles E. of Alnmouth, 50 fathoms (A. Mk.) Bate and Westwood write respecting J/era grossimana, “Dr. Johnston records it as not rare in Berwick Bay (Zool. Journ,, ili., 180).”. That southern species is not at all likely to be found on the north-east coast, and there can be little doubt that in this as in some other cases AZelifa dentata was mistaken for that species. N. MELITA PALMATA (Montagu). Eighty-two miles E. by N. from Tynemouel In 40-45 fathoms, October, 1g01 (A. Mk.); in a small salt-water pond at Amble (G. S. B.). The first locality given is a very un- usual one for this species. N, 68 CRUSTACEA OF NORTHUMBERLAND AND DURHAM MEGALUROPUS AGILIS Norman. 1889. Megaluropus agilis, Norman, Notes on_ British Amphipoda. Ann. and Mag. Nat. Hist., ser. 6, vol. iii. p- 446, pl. xviii., figs. 1-10, and vol. iv., p. 123, pl. x., figs. 15-17. 1889. Megaluropus agilis, Hoek, Crustacea Neerlandica ii. Tids. der Nederland. Dierk. Vereeniging 2zde Reeks Dei IL., p. 28, pl. vii., fig. 7, pl. viii., fig. 3, pl. ix., fig. 3. 1890. Chetrocratus Drechselit, Meinert, Vidensk. Udbytte Kanonbaden “Hauchs” ‘Togter, Crustacea Mala- costraca, p. 170, pl. il, figs. 48-52. A few specimens from Cullercoats, Blyth Bay, and Druridge Bay (A. Mk.) N. M#ra orHonis (H. Milne-Edwards)=J/egamera othonis 2 and Megamera longimana g (B. and W.) Frequent off the coasts. N-D: CHEIROCRATUS ASSIMILIS (Lilljeborg). 1851. Gammarus assimilis, Lilljeborg, Ofvers. Kong. Vet.- Akad. Forhand., p. 23, and 1854, Kong. Vet.-Akad. Handl., p. 455. 1865. Chetrocratus mantis, Norman, Nat. Hist. Trans, Northumberland and Durham, vol. 1., p. 13, pl. vil. figs. 14, 15, and Bate and Westwood, vol. ii., p. 513. 1889. Chetcocratus assimilis, Norman, Ann. and Mag. Nat. Histseser- 0, .VOleiv;.p. 129, plex. fig. 13; plexi; fic. rx: Dredged in 35-50 fathoms off Holy Island in 1864 Ca MN) N. CHEIROCRATUS SUNDEVALLI (Rathke). This is Lil/jeborgia shetlandica Bate g, Protomedeta Whttet Bate 9, Lil/jeborgia Normant Stebbing, Chetrocratus brevt- cornts Hoek. For changes in the development with growth of the second gnathopod see Norman, Ann. and Mag. Nat. Hist., ser. 6, vol. iv., p. 130, pl. xi., figs. 9, 10, and pl. xii., figs. 1-3. Off Holy Island, 1864 (A. M. N.); 24 miles off Souter Point, 21 fathoms, and Cullercoats (A. Mk.) N.D. 69 F CRUSTACEA OF NORTHUMBERLAND AND DURHAM Fam. 20.—AORID/® MICRODEUTOPUS ANOMALUS (Rathke). I have the following notes; seven miles off Tynemouth, 25 fathoms, frequent ; off Holy Island, 1864 (A. M. N.); Sunder- land, low water (G. S. B.); but the only specimens now in my collection are those from off Holy Island, which prove to be females of Protomedeta fasciata (which see). This throws some doubt on the other records. Females of the Aoride are often, especially young, difficult to distinguish ; but the species last named is not likely to have occurred at low water. Mr. Meek in his list gives “ AZtcrodeutopus sp. a female was obtained at Cambois Bay in August, 1901.” Aora typicA Kroyer=A. gracilis Bate. Holy Island Harbour, 1900, and from 23 miles off Souter Point in 21 fathoms (A. Mk.) NED: Lempos LONGTPES (Lilljeborg). A few specimens, Cullercoats, 28th August, rgo1 (A. Mk.) Lempos WEBSTERI Bate. 1876. Microdeuteropus bidentatus, Stebbing, Ann. and Mag. Nat. Hist., ser. iv., vol. xvii., p. 73, pls. iv. and v., figs."z, 1a, 1b 6. Twenty-four miles off Alnmouth, 50 fathoms, and 23 miles off Souter Point in 21 fathoms (A. Mk.) NED: Fam. 21.—PHOTID PROTOMEDEIA FASCIATA Kroyer. Off Alnmouth, 39-50 fathoms, and 16 miles off Souter Point, 39 fathoms (A. Mk.). ‘These specimens found by Mr. Meek were very young; on re-examining three specimens which were recorded in 1865 as “ Microdeutopus anomalus” from off Holy Island, 38-50 fathoms, I find them to be full grown females of Protomedeia fasciata. A character which was the first to catch my eye, and is a very distinctive one, was the very slender propodos of the anterior pairs of pereeopoda, and the slenderness and great length of the nail, which is quite as 7° CRUSTACEA OF NORTHUMBERLAND AND DURHAM long or longer than the propodos ; this last little feature is not noticed or correctly figured by Sars—absolutely correct in minute details as he usually is—who represents the nail too short.- I mention this because in a mixed gathering of females of Microdeutopus, Aora, Protomedeta, &c., this propodos and hail, being so easily seen, would enable the specimens of the latter to be at once singled out. IN: D: GAMMAROPSIS ERYTHROPHTHALMUS Lilljeborg = Lurystheus tridentatus Bate $=Lurystheus bispinitmanus Bate . Off Holy Island and other parts of the Northumberland coast; fishing boats, Cullercoats (A. M. N.); Seaham, 25-30 fathoms (G. H.); trawlers, Sunderland (G. S. B.); E. of Alnmouth and off Souter Point (A. Mk.). This is perhaps Gammarus maculatus of Johnston. N.D. GAMMAROPSIS PALMATA (Stebbing and Robertson). 1891. Podoceropsts palmata, Stebbing and Robertson, Four New British Amphipoda. ‘Trans. Zool. Soc., vol. xiii., p. 36, pl. vi. A. 1894. Gammaropsis nana, G. O. Sars, Crustacea Norway, Amphipoda, p. 561, pl. cxcix., fig. 2. Thirty-two miles E. of Alnmouth, 39 fathoms, and 23-39 miles E. of Souter Point, Co. Durham, 21-39 fathoms (A. Mk.) N.D. MEGAMPHOPUS CORNUTUS Norman. 1878. LPodoceropsis intermedia, Stebbing, “Two new species of Amphipodous Crustacea.” Ann. and Mag. Nat. TIS, Sel. 5, Ol. il... p-. 307, pl. xv., fig. 3; Two and a half miles off Souter Point in 21 fathoms (A Mk.); and in the same neighbourhood by G. S. B. D. PHOTIS LONGICAUDATA (Bate). Off Blyth in 22 fathoms (A. Mk.) N. Puotis REINHARDI Kroyer. Off “Alnmouth, Farne Islands, and off Souter Point, Co. Durham, 1n 21-59 fathoms, and off the Tyne in 22 fathoms 71 CRUSTACEA OF NORTHUMBERLAND AND DURHAM (A. Mk.) ; off Holy Island, 38-50 fathoms ; 7-50 miles off Tynemouth, 25-40 fathoms (A. M. N.); Seaham, 20-30 fathoms (G. H.) My Northumberland specimens were examined by Mr. Spence Bate and named Liscladus Jlongicaudatus ; but on examination I find them to be referable to Photss Reinhard. N.D. PoDpOCEROPSIS EXCAVATA (Bate)= Menta excavata Bate 6, and Nenia rimapalmata Bate 9. It is Xenoclea Bate? Boeck and Podoceropsis Batet Meinett. Northumberland coast (J. Alder); outside Holy Island, 35-50 fathoms; fishing boats, Cullercoats; off Sunderland, 1863 (A. M. N.); Seaham (G. H.); trawlers, Sunderland (G. S. B.); off Berwick in 25 fathoms, and off Blyth in 22 fathoms (A. Mk.) NED: Popoceropsis SoPHI® Boeck. Both sexes of the last species, and the only specimen known to Bate of Menta undata were sent to him from Northum- berland by Mr. Alder. Mencia undata is believed to be the female of Podoceropsis Sophie Boeck (=enta tuber- culosa Bate); and if that species should hereafter be found off the Northumberland coast, which there is little doubt it will be, this suspicion would be confirmed. N. Fam, 22,.—AMPHITHOIDAt AMPHITHOE RUBRICATA (Montagu)=A. /ettorina Bate. Very common between tidemarks. N.D. Fam. 23.—JASSID& ISCHYROCERUS ANGUIPES Kroyer. “Two or three females obtained at Cullercoats in August have four spines on the inner ramus of the third uropod, and a dorsal row of three or four spines on the telson, and there- fore appear to belong to this species.” Also in 42-45 fathoms 82 miles E.N. of the Tyne, and in 42 fathoms off the Farne Islands (A. Mk.) INE 72 CRUSTACEA OF NORTHUMBERLAND AND DURHAM ISCHYROCERUS MINUTUS Lilljeborg. 1889. Podocerus tsopus, Walker, Proc. Biolog. Soc. Liver- pool, vol. iii., p. 209, pl. xi, figs. 11-13, and 1890, vol. iv., p. 250, pl. xvi., fig. 7. “ Fairly common in the harbour at Cullercoats and at other places on the coast” (A. Mk.); Sunderland (G. S. B.) We regard this as a small form of the foregoing species. N.D. BRUZELIELLA FALCATA (Montagu)=VPodocerus falcatus B.&W. Off Berwick, 1863 ; Cullercoats ; off Seaham, 25-30 fathoms ; off Sunderland (A. M. N.); Craster and 82 miles E. by N. from the Tyne in 42-45 fathoms (A. Mk.). See Norman and Scott, “ Crustacea of Devon and Cornwall,” p. 94, for remarks on generic name Bruzeliella. N.D. BRUZELIELLA PUSILLA (G. O. Sars)=Podocerus minutus and pusillus G. O. Sars. Eighty-two miles E. by N. from Cullercoats, 40-45 fathoms (A. Mk.). Podocerus Herdmani Walker and Podocerus odon- tonyx of G. O. Sars appear to be founded on a mere varietal or abnormal state of the second gnathopods in which a tubercle is produced in the middle of*the inner face of the finger ; indeed the typical specimen of Aruzeliella falcata as figured by Montagu has a similar form of the nail. N. JASSA PELAGICA Leach. This is Fassa capillata Bruzelius, Podocerus capillatus B. & W., Fanassa capillata Sars, and Parajassa pelagica of Stebbing. Berwick (A. M. N.) N. Fam. 24.—COROPHIID® ERICHTHONIUS HUNTERI (Bate). Off Durham coast (G. S. B.); off Souter Point, 21 fathoms ; off Farnes in 42 fathoms; off Cullercoats in 20-25 fathoms ; and 82 miles E. by N. from Tynemouth, 42-45 fathoms (A. Mk.) The females in this genus so closely resemble each other, that it is by no means easy to distinguish them if not found in company with males. N.D. 73 CRUSTACEA OF NORTHUMBERLAND AND DURHAM ERICHTHONIUS ABDITUS (Templeton). One or two specimens from off Cullercoats (A. Mk.) ; off Holy Island (A. M. N.) N. ERICHTHONIUS DIFFORMIS (H. Milne-Edwards). Cullercoats (J. Alder and H. T. Mennell). N. CERAPUS CRASSICORNIS Bate. “Dredged by Mr. Joshua Alder on the Northumberland coast” (Spence Bate). These were the type specimens. Off Cullercoats in 20 fathoms, and 82 miles E.N.E. from the Tyne in 42-45 fathoms (A. Mk.) N. SIPHONGECETES WHITE! (Gosse)=Siphonecetes Colletti Boeck and S. mucronatus Metzger. Pretty common on the sand near to the rocks at the south end of Druridge Bay (A. Mk.). Mr. Meek has made some interesting observations on this species (Northumberland Sea Fisheries Commission Report, Scientific Investigations, 1go1, p- 59). He has also found it in Skate Roads, North Sunder- land, and at Cullercoats in 25 fathoms. Ne CoROPHIUM VOLUTATOR (Pallas)=Cancer grossipes Linné= Corophium longicorne B, & W. Common in mud near mouths of rivers and in salt marshes. N.D. COROPHIUM CRASSICORNE Bruzelius. Cullercoats, January 23, 1909 (A. Mk.); Roker (G. S. B.) N.D. CoropHiuM Bone tii H. Milne-Edwards. One specimen off Cullercoats, 5th August, 1900 (A. Mk.) . UNCIOLA PLANIPES Norman. 1865. Uncivola planipes, Norman, Nat. Hist. Trans. North- umberland and Durham, vol.1., p. 14, pl. vil. figs. 9-13. 1868. Unciola leucopis, Bate and Westwood, vol. i1., p. 518 (not Unctola leucopis, Kroyer). 1870. Glauconome Kroyert, Boeck, Crustacea Borealia et Arctica. Vidensk.-Selsk. Forhand., p. 179 @. 1870. Glauconome Steenstrupt, idem. ibidem., p. 150 2. The type specimen was taken off Holy Island in’ 35-50 fathoms in July, 1864 (A. M. N.) N. 74 CRUSTACEA OF NORTHUMBERLAND AND DURHAM UNCIOLA CRENATIPALMATA (Bate). 1863. Dryope crenatipalmata, B. & W., vol. i., p. 490 4. 1863. Dryope trrorata, B. & W., vol. i., p. 488 9. 1889. Unciola crenatipalmata, J. Bonnier, Les Amphipodes du Boulonnais. Bull. Soc. Sci. de France et Belgique, P20, pls. Xl. Xi. Near the rocks at Cullercoats, August, 1899 (A. Mk.) N. Fam. 25.—DULICHIIDZ DULICHIA PORRECTA Bate. Twenty-nine miles E. of Alnmouth, 59 fathoms; off Souter Point, 39 fathoms (A. Mk.); off Souter Point (G. S. B.) N.D. DULICHIA FALCATA Bate. Fishing boats, Cullercoats (J. Alder). N. DULICHIA MONACANTHA Metzger. One specimen 25 miles off Durham in 45 fathoms, muddy sand (G. S. B., fide A. Mk.) DD: Section III.—CAPRELLIDEA Fam. 1.—CAPRELLIDE PHTISICA MARINA Slabber=Proto pedata 9=P. Goodsert ¢. Several specimens from three miles off Cullercoats (A. Mk.). From Hydrozoa, deep water, off Cullercoats, and Durham coast (A. M. N.); trawlers, Sunderland (G.S.B.) ~° N.D. PSEUDOPROTELLA PHASMA (Montagu)=Protella phasma Bate. Three miles E. of Tynemouth and off Seaham (A. M. N.); Cullercoats from fishing boats (J. Alder); 28 fathoms off Cullercoats (A. Mk.) N.D. CAPRELLA LINEARIS (Linné). The commonest Caprellidan in the district. Capred/a lobata B. & W. is the adult male of this species. Some speci- mens sent to Mr. Spence Bate from Cullercoats and Seaham were recorded by B. & W., vol. ii., p. 73, as C. eguilibra ; they 75 CRUSTACEA OF NORTHUMBERLAND AND DURHAM however are not that species, but the male of the present one. N.D. PERIAMBUS TyPICUS (Kroyer)=Caprella typica B. & W. Off Alnmouth, 39 fathoms, off Cullercoats in 20-25 fathoms, and off Souter Point, Co. Durham, in 21-39 fathoms (A. Mk.) ; 30 miles off Sunderland, 40 fathoms (G. S. B.) N..D: Sus-Ciass III.—ENTOMOST RACA Orper VII.—BRANCHIOPODA SuB-OrDER [—PHYLLOCARIDA Fam, 1.—NEBALIID NEBALIA BIJPES Fabr. Not common, but occasionally taken off the coast. N61 SuB-OrDER II.—CLADOCERA The works and papers chiefly to be consulted with relation to the Cladocera are :— 1. Baird (W.). Natural History of British Entomostraca, 1850. 2. Norman (A. M.) and Brady (G. S.).. Monograph British Entomostraca of Families Bosminide, Macrothricide, and Lynceide. Nat. Hist. Trans. Northumberland and Durham, vol. i., 1867, pp. 354-408, pls. Xvill.-xxill. 3. Brady (G.S.). British species of Entomostraca belong- ing to Daphnia and other allied genera. ‘Trans. Nat. Hist. Soc. Northumberland and Durham, vol. xiii., 1898, pp. 217-248, pls. vil.—x. 4. Lilljeborg (W.). Cladocera Sueciz (Konig. Gesellsch. Wissensch., Upsala), 1got. The last work is indispensable to the student of the Cladocera. All the following species will be found described and amply figured in it. References need not be given in general to Lilljjeborg, but they will be given to the best figures of the species in papers by British authors. 76 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Division 1.—CALYPTOMERA SECTION I—CTENOPODA G. O. Sars Fam. 1.—SIDIDE SIDA CRYSTALLINA (O. F. Miiller). 1850. Sida crystallina, Baird, Brit. Entom., p. 107, pl. xii., figs. 3, 4, pl. xill., fig. 1 a—-h. 1go1. Sida crystallina, Lilljeborg, l.c., p. 18, pl.i., figs. 1-10, pl. ii., figs. 1-3. Apparently in all the larger pieces of water ; Crag, Broomley, Grindon, Greenley, West Rothley, and South Belsay Lakes, Northumberland ; Wynyard, Hardwick, and _ Sedgefield (A. M. N.); Sweethope (G. S. B.) N.D. DIAPHANOSOMA BRACHYURUM (Liévin). 1848. Sida brachyura, Liévin, Branchiopoden der Danziger Gegend, p. 20, pl. iv., figs. 3-9. 1850. Diaphanosoma Brandtianum, S. Fischer, Erganz- ungen. . . Umgegend von St. Petersburg vorkom. Crust. Ord. Branchiopoden und Entomostraceen. Mem. des Sav. Etrang., vol. vil., p. 10, pl. iii., figs. 1-5. 1865. Daphnella Lrandtiana, G. O. Sars, Norges Fersk- vandskrebsdyr; Branchiopoda I. Cladocera Ctenopoda P- 45, pl. il., figs. 25-33. 1901. Diaphanosoma brachyurum, Lilljeborg, l.c., p. 36, pl. i., figs. 6-13, pl. iv., figs. 1-4. 1907. Diaphanosoma brachyura, var. nasuta, Kane (W. F. de V.), The Irish Naturalist, vol. xvi., p. 305, pl. xli. Other synonyms are Sida brachyura Lilljeborg “ De Crus- taceis,” Daphnella brachyura of P. E. Miiller, Hudendorff, and Herrick, Sida Brandtiana Leydig, Daphnella brachyura Hellich, and Diaphanosoma Brandtianun G. O. Sars. Daphnella Baird, 1850, is preoccupied ; Diaphanosoma S. Fischer published later in the same year must therefore be the name of this genus. 77 CRUSTACEA OF NORTHUMBERLAND AND DURHAM: The second species of this genus—if the former is worthy of specific rank—is Diaphanosoma Wingit Baird. Of this the following are, according to Lilljeborg, synonyms: Sidea erystallina S. Fischer, 1851; Diaphanosoma Leuchtenbergianum S. Fischer, 1854; Daphnella brachyura G. O. Sars, 1865, Hellich, Daday, and Stengelin; Daphnella Brandtiana P. E. Miiller, Herrick, and Matile; Dzaphanosoma brachyurum G. O. Sars, 1890; and Diaphanosoma Leuchtenbergianum Lillje- borg, 1901. The antenne when directed backwards do not reach the end of the body in D. drachyurum; in D. Leuchtenbergianum they attain the length of the body or reach beyond it. We have taken Diaphanosome in Darden Lakes, Northum- berland; and in Wynyard and Hardwick Sedgefield lakes, Co. Durham; but as they were taken some forty years ago we are unable to say positively to which species they belonged ; such specimens as have been preserved appear to be referable to D. brachyurum (A. M.N.) Neb: Section II.—ANOMOPODA Fam. 1.—DAPHNIID DACTYLURA MAGNA (Strauss). 1898. Dactylura magna, G.S. Brady, l.c.. p. 241, al X, figs. 1-8, 18. Pond at Layton Farm, near Sedgefield, Co. Durham (A. M. N.); pond at Elstobb House and at Canal Farm, High Barnes, near Sunderland (G. S. B.); quarry pond between Plessey and Blagdon, Northumberland (G. S. B. and A. M. N.) N.D. DAPHNIA PULEX (De Geer). | ~ Common in ditches and small ponds. N.D. DAPHNIA OBTUSA Kurz. 1898. Daphnia obtusa, G. S. Brady, l.c., p. 224, pl. ix figs. 5-9. Pond at Bishopton, Co. Durham (A. M. N.) Bk 78 CRUSTACEA OF NORTHUMBERLAND AND DURHAM VAR. PROPINQUA G. O. Sars. 1898. Daphnia obtusa, var. propingua, G. S. Brady, ‘l.c., p. 225, fig. A, and pl. viil., figs. 21, 22. Pond at Morton House near Fence Houses (A. M. N.) D., DAPHNIA HAMATA G. S. Brady. 1898. Daphnia hamata, G. 5S. Brady, l.c., p. 227, pl. vii., figs. 9-17. Ponds at Wallington, Northumberland, and near the Bowes House Lodge of Lambton Castle (A. M. N.) N.D: DAPHNIA LONGISPINA O. F. Miiller. . 1898. Daphnia longispina, G.S. Brady, l.c., p. 228, pl. viii., figs. 11-19. Crag, Paston, and Sweethope Lakes, Northumberland (G. S. B.); lakes at Wynyard and Hardwick Sedgefield, and moat at Raby Castle. I am not sure if the two badly mounted specimens which I have of the species from Crag Lake may not rather be referable to D. dacustris G. O. Sars (A. M. N.) N.D. SCAPHOLEBERIS MUCRONATA (O. F. Miiller). In Greenley and Chartners lakes; and in the river Till at Etal, Northumberland ; in the lakes at Wynyard and Hard- wick Sedgefield (A. M. N.); the Loughs, Knaresdale (Ga 5: B.) N.D. SIMOSA VETULA (O. F. Miiller). The generic name Simocepha/us being preoccupied for a genus of snakes, A. M. Norman has substituted for the later Stmocephalus of Schoedler the name Simosa (see Ann. and Mag. Nat. Hist, ser. 7, vol. xi., 1903, p. 367). This is a common species in lakes, ponds, and streams. : N.D. CERIODAPHNIA RETICULATA (Jurine). 1901. Certodaphnia reticulata, Lilljeborg, |.c., p. 184,: pl. xxvii., figs. 1-10. . Newbiggin, Northumberland ; Sedgefield, Co. Durham (A. M. N.) N.D 79 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CERIODAPHNIA MEGALOPS G. O. Sars. 1901. Ceriodaphnia megalops, Lilljeborg, l.c., p. 190, pl. xxvil., figs. 11-15. Abundant in the river Till at Etal, Northumberland (ASM. ON.) N. CERIODAPHNIA QUADRANGULA (O. F. Miiller). 1901. Ceriodaphnia quadrangula, |.c., p. 193, pl. xxviil., figs. I-5. Chartners Lake, Northumberland (A. M. N.) 5. Ne CERIODAPHNIA PULCHELLA G. O. Sars. 1901. Ceriodaphnia pulchella, Lilljeborg, l.c., p. 198, pl. xxvii, figs. 6--18. Lake at Hardwick Hall, Sedgefield (A. M. N.); Tindale ‘arm (GS: Be) N.D. CERIODAPHNIA LATICAUDATA P, E. Miiller. 1901. Ceriodaphnia laticaudata, Lilljeborg, l.c., p. 208, pl. xxix., figs. 8-14. Lake at Wynyard Park (A. M. N.) D. Fam. 2.—BOSMINID® BosMINA LONGIROSTRIS (O. F. Miiller). 1867. Bosmina longirostris, Brady and Norman, l.c., p. 357, plexi, tf. 4. 1901. Bosmina longirostris, Lilljeborg, l.c., p. 226, pl. xxx., figs. 13-16, pl. xxxi., figs. 1-18, pl. xxxii., figs, 1-3. Bosminz have been taken by me in Darden and Sweethope Lakes, Northumberland ; also at Wynyard and Hardwick Hall, Sedgefield, and moat at Raby Castle; and I believe all of them to have been this species, but as it is more than forty years ago when they were found, and I merely have records and not specimens, it is possible that those from one or more of the Northumberland localities may belong to the following species (A. M. N.) N.D. BOSMINA OBTUSIROSTRIS G. O. Sars. 1867. Bosmina longispina, Brady and Norman, l.c., p. 358, pl xxi, HSS. ae. 80 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1901. Losmina obtustrostris, Lilljeborg, l.c., p. 237, pl. xxxii., figs. 4-13, pl. xxxill., figs. 1-12, pl. xxxiv., figs. 1-12, pl. xxxv., figs. 1-9, pl. xxxvi., figs. 1-12, pl. xxxvil., figs. 1-7. Tarns on the Humbles, Northumberland (G. S. B.) N. Fam. 3—MACROTHRICID & ILYOCRYPTUS SORDIDUS (Liévin). 1863. Acantholeberits sordida, Norman, Ann. and Mag. Nat. Hist., ser. 3, vol. ii., p. 4 (separate copy), pl. xi., figs. 6-9 ; and Tyneside Nat. Field Club, vol. vi., p. 55, pl. vi., figs. 6-9. 1867. Llyocryptus sordidus, Norman and Brady, L.c., p. 368. Eastern lake at Belsay, and ditch on the south side of the railway between Hexham and Corbridge (G. S. B.); pond of the deserted colliery at Bishop Middleham, and in the Forge Dam at Sedgefield (A. M. N.) NED: MACROTHRIX LATICORNIS (Jurine). 1867. Macrothrix Jlaticornis, Norman and Brady, l.c., p- 360, pl. xxiil., figs. 4, 5. 1901. Macrothrix laticornis, Lilljeborg, l.c., p. 338, pl. liv., figs. 6-13. East lake at Belsay, Northumberland, at Fardingslake, and in the Glebe Engine Pond, Sunderland (G. S. B.). All these localities are now either built over or otherwise spoiled. N.D. MACROTHRIX HIRSUTICORNIS Norman and Brady. 1867. Macrothrix hirsuticornis, Norman and Brady, l.c., Dp: 361, pl. xxil.; figs. 6, 7. 1901. Macrothrix hirsuticornis, Lilljeborg, l.c., p. 346, pl. lv., figs. 6-14. The types of this species were taken by G. S. B. in 1864 in a slow-running stream at Ashburn, Sunderland. BD DREPANOTHRIX DENTATA (H. A. Eurén). 1867. Drepanothrix hamata, Brady and Norman, l.c., p. 264, pl. xxii, figs. 5-7. SI CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1901. Drepanothrix dentata, Lilljeborg, |.c., p. 368, pl. Ivii., figs. 2-16. In two of the small lakes at Darden, Northumberland, in 1864, and again at a subsequent visit (A. M. N.) N. ACANTHOLEBERIS CURVIROSTRIS (O. F. Miiller). 1863. Acantholeberts curvirostris, Norman, “On Acantho- leberis Lilljeborg.” Ann. and Mag. Nat. Hist., ser. 3, vol. xt., p. 2 (separate copy), pl. xi., figs. 1-5, and Trans. Tyneside Nat. Field Club, vol. vi., p. 53, pl. vi,, figs. I-5. © 1g01. Acantholeberis curvirostris, Lilljeborg, l.c., p. 375, pl. Ivii., fig. 17, pl. lvili., figs. 1-17. _ This is a species which affects peaty water, and seems never to occur in the valleys. Crag Lake, Northumberland (G. S. B.). In Chartners, Aird, and Darden lakes, and in bog-pools near Winter’s Stob, Northumberland (A. M. N.) N. Fam. 4.—CHYDORID EURYCERCUS LAMELLATUS (O. F. Miiller). 1867. Lynceus lamellatus, Norman and Brady, l.c., p. 401 plexx., fied. 1901. Lurycercus lamellatus, Lilljeborg, l.c., p. 386, pl. lix., figs. 1-10, and pl. Ix., figs. 1-10. A common species in ponds, lakes, slow rivers, etc. N.D. CAMPTOCERCUS RECTIROSTRIS Schodler. 1867. Lynceus macrourus, Norman and Brady, l.c. (nec Miiller), p. 373, pl. xx., fig. 6, pl. xx1., fig. 2. 1go1. Camptocercus rectirostris, Lilljeborg, l.c., p. 402, pl. ixi.; figer4, pls lx, figs.1-17,. Crag, Greenley, and Grindon lakes, Northumberland CAS Ma NG) IN: ACROPERUS HARP Baird. 1867. Lynceus harpe, Norman and Brady. l.c., p. 372, pl xxi oeers 1901. Acroperus harpe, Lilljeborg, l.c., p. 418, pl. xiii, figs. 14-24, pl. Ixiv., figs. 1-10. Common in the clear water of ponds and lakes. ND: 52 CRUSTACEA OF NORTHUMBERLAND AND DURHAM ALONOPSIS ELONGATA G. O. Sars. 1867. Lynceus elongatus, Norman and Brady, l.c., p. 374, DieRVill tio. Ts pl. XVI, ho ze 1901. Alonopsts elongata, Lilljeborg, l.c., p. 434, pl. Ixv., figs. 5-20. This is a lover of moorland lakes and tarns where there is some admixture of peat with the water. In Northumberland it is widely distributed in such situations, occurring in all the Northumberland lakes and many smaller pieces of water. N. ALONA QUADRANGULARIS (O. F. Miiller). - 1867. Lynceus quadrangularis, Norman and Brady, l.c., Po S775 ple xxl, fig. 5. 1867. Alona sanguinea, P. E. Miiller, Danmarks Cladocera, Naturhist. Tidsskrift, ser. 3, vol. v., p. 177. 1go1. Lynceus guadrangularis, Lilljeborg, l.c., p. 448, pl. Ixvi., figs. 8-17. Common in lakes, ponds, and slow streams. N.D: ALONA AFFINIS (Leydig). 1860. Lynceus affinis, Leydig, Naturgesch. d. Daphniden, p. 223, pl. ix., figs. 65-69. 1867. Alona oblonga, P. E. Miiller, Danmarks Cladocera, Naturhist. Tidsskrift, ser. 3, vol. v., p. 175, pl. iil. figss 224. 23- pl. lve iS. 02. 1901. Lynceus affints, Lilljeborg, l.c., p. 455, pl. Ixvi., figs. 18-21, pl. Ixvii., figs. 1-17, pl. Ixviii., fig. 1. This is Lynceus quadrangularis S. Fischer and A/ona quadrangularis of Herrick. Forge Dam, Sedgefield (A, M. N.); East Belsay Lake CG: S:B:) > N.D. ALONA TENUICAUDIS G. O. Sars. 1867. Lynceus tenuicaudis, Norman and Brady, l.c., p. 376, pl. xix., fig. 3. 1867. Alona tenuicauais, P. E. Miller, Danmarks Cladocera, Naturhist. Tidssk., ser. 3, vol. v., p. 179, pl. ii., fig. 20, pl. ili., fig. 24. 83 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1go1. Lynceus tenuicaudis, Lilljeborg, l.c., p. 461, pl. Ixviii., figs. 2-8. In a small pond at Morden Moor Farm near Sedgefield (A. M. N.) D. ALONA COSTATA G. O. Sars. 1867. Lynceus costatus, Norman and Brady, l.c., p. 379, pl xviii. iS. 2) and pl. xxi. fie. 7. 1867. Alona lineata (Schidler), P. E. Miiller, Danmarks Cladocera, Naturhist. Tidssk., ser. 3, vol. v., p. 178, pl. iv., figs. 3, 4. 1901. Lynceus costatus, Lilljeborg, l.c., p. 465, pl. Ixviil., figs. 9-15. Rothley, Aird, Capheaton, Chartners, Crag and Grindon Lakes, Northumberland ; old colliery pond at Bishop Middle- ham ; pond near Houghton-le-Spring, Co. Durham (A. M.N.); Wallington, Rothley, and Belsay Lakes, Northumberland (G.S.28;) ND: ALONA GUTTATA G. O. Sars. 1867. Lynceus guttatus, Norman and Brady, l.c., p. 380, pl: xvii., fig.6, and pliaex., fe.tre. 1874. Alona parvula, Kurz, Dodekas neuer Cladoceren, &c. (separate copy), p. 44, pl. il, fig. 8. 1874. Alona tuberculata, id. ibid., p. 45, pl. i1., fig. 3. 1901. Lynceus guttatus, Lilljeborg, l.c., p. 468, pl. Ixville figs. 16-26. Crag and Sweethope Lakes, Northumberland, and in a small pond at East Herrington, Co. Durham (A. M. N.); in ponds at Cullercoats and at Marsden, Co. Durham (G. pee Ee ALONA ROSTRATA Koeh. 1867. Lynceus rostratus, Norman and Brady, l.c., p. 394, ploxixé wipe 1, pl. xxi. Mig. 6: tgo1. Lynceus rostratus, Lilljeborg, l.c., p. 482, pl. 1xix., figs. 7-21. East Lake at Belsay, Northumberland (G. S. B.); river Till at Etal, Northumberland (A. M. N.) N. 34 CRUSTACEA OF NORTHUMBERLAND AND DURHAM RHYNCHOTALONA FALCATA (G. O. Sars). 1862. /larporhynchus falcatus, G. O. Sars, Om de i Omengen af. Christiania forekommende Cladocerer, Forhand. Videns-Selsk. Christiania, 1861, p. 41 (separate copy). 1867. Lynceus falcatus, Norman and Brady, l.c., p. 387, pl. xviii, fig. 4, pl. xx., fig. 1. 1884. Leptorhynchus falcatus, C. L. Herrick, Final Report on the Crustacea of Minnesota, p. 114, pl. i., fig. 17. 1901. Leptorhynchus falcatus, Lilljeborg, l.c., p. 488, pl. lxix., figs. 22-26, pl. Ixx., figs. 1-5. 1903. Ahynchotalona falcata, Norman, New generic names for some Entomostraca and Cirripedia. Ann. and Mag. Nat. Hist., ser. 7, vol.-xi., p: 367. Sars’ generic name //arporhynchus being pre-occupied, Herrick substituted Lepforhynchus, an unfortunate choice, as the name had been more than once previously used, and therefore Dr. Norman has re-named the genus 2Aynchotalona. Greenley Lake, Northumberland (A. M. N.), and Sweethope (G-S: B:) N. Leypicia Lrypici (Schédler). 1860. Lynceus gquadrangularis, Leydig (nec Miiller), Naturgesch. der Daphniden, p. 221, pl. viii., fig. 50. 1863. Alona Leydigit, Schodler, Neue Beitrége zur Natur- gesch. d. Cladoceren, p. 27. 1874. Leydigtia quadrangularis, Kurz, Dodekas neuer Cladoceren (separate copy), p. 52, pl. ii., fig. 2. 1go1. Leydigia guadrangularits, Lilljeborg, l.c., p. 494, pl. Ixx., figs. 6-17, pl. Ixxi., figs. 1-3. Schodler was undoubtedly right in re-naming this species, because the specific name guadrangularis, as used by Leydig, was that of another species described by Miiller, and mis- applied by Leydig to the present form. The specimen assigned to Lynceus acanthocercotdes by Brady and Norman (l.c., p. 385, pl. xix., fig. 5, pl. xxi., fig. 7), was really the present form, and not that described by Fischer. 85 G CRUSTACEA OF NORTHUMBERLAND AND DURHAM The specific distinction between the two is certainly very slight, but apparently constant. My discovery and re-discovery of this species I look upon as one of the most curious and remarkable experiences in my life as a naturalist. One afternoon, June 22nd, 1864, I brought home a gathering made in a pond at Lambton Park. Examination proved it in the main to consist of Daphnia pulex; but there floated across the field of the microscope the post-abdomen of a Lynceid which I at once recognised from its peculiar spination as something new to me; but it flashed across me that I had seen somewhere a figure like it. Taking down a MS. book from my library I found in it a tracing made at the Brit. Museum Library of Fischer’s figure of Lynceus acanthocercoides. ‘That this species described from Moscow should be here before me in that frag- ment of a post-abdomen was of course of the highest interest. The whole gathering was therefore passed drop by drop under review in the microscope, and the remainder of the slough or cast skin of the specimen to which the post-abdomen belonged was met with, but no other specimen; and Moscow was its only known home. Twenty years passed by. I had three or four times brought home gatherings from the Lambton Pond, but the phantom Leydigia had not shown itself again either to myself or, as far as [ am aware, to any other British naturalist. Some young friends were coming to me in the evening, and I required living material to show them under the microscope. At the breakfast table I told a nephew who was staying with me the foregoing story, and said we would in the afternoon go to the said pond to get what I required, and perhaps Zeydigva might be found. I went into my library and began to examine a gathering I made ten days before at Seaton Carew, and there was Leydigia! I called up my nephew and remarked how curious it was that it should thus have turned up just after I had been talking about it. In the afternoon we went to the old habitat in Lambton Park, and there again was Leydigza. From two different localities in the same day ! 86 CRUSTACEA OF NORTHUMBERLAND AND DURHAM I believe I can explain how it was that my search had before been unsuccessful. The species is a bottom-loving form. I had worked only in the water and among the weeds, while it lay snug below, but the light cast skin of 1864 had floated up and so been taken among the Daphnize (A. M. N.) Pond near the Bowes House Lodge of Lambton Park ; ditches at Seaton Carew (A. M. N.); ditch south side of rail- way between Hexham and Corbridge, May, 1885 (G.S. B.) GRAPTOLEBERIS RETICULATA (Baird). 1867. Lynceus testudinarius, Norman and Brady, l.c., p- 381, pl. xviii, fig. 7, and pl. xxi., fig. 4. 1901. Graptoleberis testudinarta, Lilljeborg, l.c., p. 504, pl. Ixxi., figs. 9-14, pl. Ixxii., figs. 1-8. It is Alona esocirostris of Schodler. Crag, Grindon, Chartners, and Darden Lakes, Northumber- land, and Hardwick Lake, Sedgefield (A. M. N.); Belsay Lake, Northumberland ; Boldon Flats and Fardingslake, Co. Durham (G. S. B.) IN-D: ALONELLA EXCISA (S. Fischer). 1854. Lynceus excisus, S. Fischer, Abhand. neue oder nicht genau gekannte Arten Daphniden u. Lynceiden. Bull. Soc. Imp. Nat. de Moscou, p. 428, pl. iii., figs. 11-14. 1863. Pleuroxus excisus, Schodler, Neue Beitrage zur Naturgeschichte der Cladoceren, p. 49, pl. il., fig. 38. 1888. Pleuroxus excisus, Hellich, Die Cladoceren Bohmens, P: 99, fig. 56. 1894. Pleuroxus extguus, Wisenberg-Lund, Gronlands Ferskvandsentomostraca. Middel. naturhist. Foren. i Kjobenhavn, p. 127, pl. iv., fig. 16 (separate copy). 1901. Alonella excisa, Lilljeborg, l.c.. p. 510, pl. Ixxii., figs. 9-19. “Crag, Greenley, Broomley, Chartners, and Darden Lakes, and a pool in the moors at Winter’s Stob” (A. M. N.). These 87 CRUSTACEA OF NORTHUMBERLAND AND DURHAM localities were given in our paper of 1867. Probably most of them, if not all, apply to the present species, with which Alonella exigua Lilljeborg was united by us. The differences between the two species according to Lilljeborg’s recent work appear to be very slight. The illustrations given by us in 1867 are regarded by Lilljeborg as referable to A. exigua; but we do not now know in what locality the figured specimen was taken. NG ALONELLA ExIGuA (S. Fischer). 1853. Lynceus exiguus, Lilljeborg, De Crust. ex Ord. tribus, SC... Po 70; pls Vile) 2S. G, 10. 1874. Alonella exigua, Kurz, Dodekas neuer Cladoceren, Disb os pl. tite ne. 2. 1877. Pleuroxus exiguus, Hellich, Die Cladoceren Bohmens, p- 99; fig. 57: 1900. Alonella exigua, Lilljeborg, Cladocera Sueciz, p. 513, pl. Ixxii., figs. 20-26. See under preceding species. ALONELLA NANA (Baird). 1850. Acroperus nanus, Baird, Brit. Entom., p. 130, pl. xvi., fig. 6. 1861. Alona pygmaea, G. O. Sars, Om de i omegnen af Christiania forekommende Cladocerer. Forh. Vid.- Selsk. Christiania, 1861, p. 20 (separate copy). 1863. Pleuroxus transversus, Schodler, Neue Beit. z. Naturgesch. d. Cladoceren, p. 50, pl. iii., figs. 52, 53. 1867. Lynceus nanus, Norman and Brady, lc., p. 396, pl. xvii, fig. 8, pl. xxi., fig. 8. 1go1. Alonella nana, Lilljeborg, l.c., p. 5247, pl. Ixxil., figs. 27-31. Greenley, Sweethope, Darden, and Capheaton lakes ; Winter’s Stob; Aird, in Northumberland; Hardwick Lake, Sedgefield (A. M. N.); Wallington, Rothley, and Belsay ; Fardingslake near Marsden (G. S. B.) N.D. 88 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PERACANTHA TRUNCATA (O. F. Miiller). 1903. Peratacantha truncata, Lilljeborg, l.c., p. 522, pl. Ixxii., figs. 1-20. Lilljeborg has changed Peracantha into the more classical form Peratacanta, but if changes like this were allowed to be made where would they stop! Greenley and Crag lakes, Northumberland, and Wynyard and Hardwick (Sedgefield) lakes, and a pond at Bishop Middleham (A. M. N.); Ryton-on-Tyne, Cleadon Farm pond, and Axwell Park (G. S. B.) N.D. PLEUROXUS L&vis G. O. Sars. 1861. Lynceus levis, Norman and Brady, l.c., p. 389, pl. xvii, fig. 5, and pl. xx1., fig. 14. 1901. Pleuroxus levis, Lilljeborg, l.c., p. 529, pl. Ixxiil., figs. 21, 22, and pl. Ixxiv., figs. 1-5. Crag Lake, Northumberland, and Hell Kettles, near Darlington (G. S. B.) NED: PLEUROXUS ADUNCUS (Jurine). 1867. Lynceus trigonellus, Norman and Brady, l.c., p. 391, pl. xxi., fig. 11. 1901. Lynceus aduncus, Lilljeborg, l.c., p. 541, pl. Ixxv., figs. 11-17. Crag Lake, Holy Island, Hardwick Lake Sedgefield (A.M.N.) IN-D: PLEUROXUS TRIGONELLUS (O. F. Miiller). 1863. Pleuroxus trigonelilus, Schoédler, Neue Beit. z. Naturgesch. d. Cladoceren, p. 44, pl. i1., figs. 33-36. 1863. Pleuroxus ornatus, id. ibid, p. 47, pl. ii, fig. 32. 1874. Pleuroxus ftrigonellus, Kurz, Dodekas neuer Cladoceren, &c., p. 67 (separate copy), pl. ii., figs. 2-5. 1901. Lleuroxus trigonellus, Lilljeborg, |.c., p. 534, pl. Ixxiv., figs. 13-23. The Forge Dam, Sedgefield (A. M. N.); pond near Sunder- land Cemetery, Hesleden Engine Pond near Seaham (G. S. B.) We question whether this and the preceding should be regarded as more than varieties. B): 59 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PLEUROXUS UNCINATUS Baird. 1850. Pleuroxus uncinatus, Baird, Brit. Entom., p. 135, pl. xvii, fig. 4. 1860. Pleuroxus personatus, Leydig, Naturgesch. d. Daph- niden, p. 227, pl. x., fig. 70. 1863. Rhypophilus glaber, uncinatus, and fpersonatus, Schédler, Neue Beit. z. Naturgesch. d. Cladoceren, pp. 55, 56, pl. ill., figs. 54-56 (2. glaber). 1867. Lynceus uncinatus, Norman and Brady, l.c., p. 393, plixvilitie.1O, ple xxi. fe..02. tg01. Pleuroxus uncinatus, Lilljeborg, l.c., p. 537, pl. Ixxv., figs. I-10. Greenley Lake, Hardwick Lake Sedgefield (A. M. N.); East Belsay and Wallington Lakes (G. S. B.) ND: Cuyporus GLososus Baird. 1843. Chydorus globosus, Baird, Ann. and Mag. Nat. Hist., vol. xi., p. 90, pl. ill., figs. 1-4. 1848. Lynceus tenutrostratus, S. Fischer, Uber die in d. Umgeb. von St. Petersburg vorkom. Crust., p. 193, pliexee tie 22. 1867. Lynceus globosus, Norman and Brady, l.c., p. 398, Dl xs cts. 5, toot. Chydorus globosus, Lilljeborg, |.c., p. 547, pl. Ixxv., figs. 18-27, pl Ixxvi., fig. 1. Crag Lake (A. M. N. and G. S. B.) ING CuHyporus spHricus (O. F. Miiller). 1867. Lynceus sphericus, Norman and Brady, l.c., p. 399, ple exe wie. ree rgo1. Chydorus sphericus, Lilljeborg, |.c., p. 561, pl. 1xxvii., figs. 8-25. Abundant everywhere. ND: VaR. CELATUS Schodler. Greenley Lake ; Sedgefield (A. M. N.); pond on Warden Law (GaseB:) Ne. go CRUSTACEA OF NORTHUMBERLAND AND DURHAM MonospiLus DIsPAR G, O. Sars. 1854. Lynceus tenutrostris, 5. Fischer, Bull. de Soc. Imp. de Nat. de Moscou, p. 427, pl. ill., figs. 7-10 (but not Lynceus tenutrostris, S. Fischer, 1851). 1861. Monospilus dispar, G. O. Sars, Om de i Omengen af Christ. forkom. Cladocerer, p. 23. 1867. Monospilus tenutrostris, Norman and Brady, l.c., p: 403, plesix., fig. ply xx, fig.0: 1901. Monospilus dispar, Lilljeborg, |.c., p. 581, pl. 1xxviil., figs. 26-31, pl. Ixxix., figs. 1-6. East Belsay Lake, Northumberland (G. S. B.) NE Division II.—GYMNOMERA G. O. Sars Secrion IIJI.—ONYCHOPODA G. O. Sars Fam. 1.—POLYPHEMID POLYPHEMUS PEDICULUS (Linné). 1850. Polyphemus pediculus, Baird, Brit. Entom., p. 111, pl. xvii, fig. 1. 1901. Polyphemus pediculus, Lilljeborg, l.c., p. 595, pl. 1xxix., figs. 22-31, pl. Ixxx., figs. 1-9. In lakes, Crag, Grindon, Broomley, and Greenley, and Hardwick Lake Sedgefield. INDY: PopoN INTERMEDIUS Lilljeborg. 1853. Lodon intermedius, Lilljeborg, De Crust. ex Ord. tribus Clad., Ostrac. et Cop., &c., p. 161. 1867. Podon intermedius, P.E. Miiller, Danmarks Cladocera, p- 215, pl. v., fig. 22, pl. vi., figs. 1-4. 1901. Podon intermedius, Lilljeborg, |.c., p. 627, pl. Ixxxiv., figs. 8-16, pl. Ixxxv., figs. 1-6. Occasionally taken in the tow net. N.D. gi CRUSTACEA OF NORTHUMBERLAND AND DURHAM PODON POLYPHEMOIDES (Leuckart). 1859. Evadne polvphemoides, Leuckart, Carcinologisches. Archiv f. Naturgesch., 25er Jahrg., p. 262, pl. vil., fig. 5. 1862. Pleopis minutus, G. O. Sars, Om de 1 Omengen af Christ. forekom. Cladocerer, p. 46. 1865. Podon Mecsnikowit, Czerniavski, Materialia ad Zoograp. ponticam comparatam, p. 59. 1901. Lodon polyphemoides, Lilljeborg, l.c., p. 633, pl. Ixxxv., figs. 7-11. First taken on our coasts by G. S. B. in 1866 in the estuary of the Tees, and since frequently off the coasts. NeW: EVADNE NoRDMANNI S. Lovén. 1850. Evadne Nordmanni, Baird, Brit. Entom., p. 114, Ply evils, fos 1. 1901. Evadne Nordmannt, Lilljeborg, l.c., p. 641, pl. Ixxxv., figs. 4-17. Not rare off the coasts. N:D: (The middle of the Northumberland lakes has never been examined. It is not improbable that some of the “ plankton” species will reward research there). Orpver VIII—OSTRACODA The following are the chief works referred to in the list of Ostracoda: 1. Brady (G.S.). Monograph of Recent British Ostracoda. Trans. Linn. Soc., vol. xxvi., 1868. 2. Brady (G. S.) and Norman (A. M.). Monograph of the Marine and Freshwater Ostracoda of the North Atlantic and North-Western Europe, Section I., Podocopa. Scient. Trans. Royal Dublin Soc., ser. 2, vol. iv., 1889. 3. Brady (G. S.) and Norman (A. M.). Same as above, Pt. II. Scient. Trans. Royal Dublin Soc., ser. 2, vol. v., 1896. g2 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 4. Miller (G. W.). Zoologica, Heft 30, Deutschlands Stisswasser-Ostracoden, 1900. 5. Kaufmann (A.). Cypriden und Darwinuliden (Revue Suisse de Zoologie, vol. vili., 1900). 6. Hartwig (W.). Arten der Ostracoden—Unterfamilie Candonine der Provinz Brandenburg (Sitz.-Bericht d. Gesellsch. naturf. Freunde zu Berlin), rgor. SECTION I.—PODOCOPA Fam. 1.—CYPRIDIDE CyPRIA OPHTHALMICA (Jurine). Common in ditches and ponds and at the margins of lakes. N.D. CyprRIA EXSCULPTA (S. Fischer)=Cyfrts striolata G. S. Brady =Cypris granulata (the young) D. Robertson. Seaton Carew, Co. Durham; Newbiggin (A. M. N.); Greenley Lake (G. S. B.) NED: CycLocypris GLozosa (G. O. Sars)=Cypris cinerea G. S. Brady. Newbiggin; Broomley and Crag Lakes (A. M. N.) N. CyCLOCYPRIS SERENA (Koch). 1889. Cypria serena, Brady and Norman (2), p. 70. 1896. Cyclocypris serena, Brady and Norman (3), p. 718. Common in ditches, ponds, and lakes. N.D. CycLocypris L&vis (O. F. Miiller)=Cypris minuta Baird= Cypris ovum G.S. Brady. 1889. Cypria levis, Brady and Norman (2), p. 18. 1896. Cyclocypris levis, Brady and Norman (3), p. 728. Common everywhere. N° Cypris FUSCATA (Jurine)=Cypris fusca and hispida Baird. 1864. Cypris oblonga, G.S. Brady, Trans. Tyneside Nat. Field Club, vol. vi., p. 104, pl. il., figs. 1-4. An abundant species in small pieces of water. N-D. Cypris OBLIQUA G. S. Brady. Rothley and Belsay Lakes, Northumberland (G. S. B.) ; Crag Lake (A. M. N.) N. 93 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CypRIS RETICULATA Zaddach=Cyfris affinis Fischer and Lilljeborg. 1865. Cyprts tessellata, G. 5. Brady (partim) (1), p. 366. 1889. Cypris reticulata, Brady and Norman (2), p. 76, pl. viii., figs. 1, 2, pl. xi., figs. 5-7. Sedgefield (A. M. N.); Fenham and Boldon Flats (G. S. B.) N:D. CypRIS VIRENS (Jurine)=C. ¢ristriata Baird. A common inhabitant of small grassy pools and ditches which dry up in summer. N.D. CypRIs PUBERA O. F. Miiller. 1863. Cypris punctillata, Norman, Trans. Tyneside Nat. Field Club, vol. v., p. 145, pl. ill., figs. 11-14. Taken in great abundance and very fine in the Forge Dam, Sedgefield, in 1861 (A. M. N.); pond at Seaton Marsh, Co. Durhann(G..S..B.): Itas a rare species. D. Cypris ORNATA O. F. Miiller. The only known British specimens of this species were taken by G. S. B. in a pond near Shotton Hall, Co. Durham. 10}, Cypris ELLIPTICA Baird=C. hirsuta S. Fischer. 1889. Cypris elliptica, Brady and Norman (2), p. 75, pl. ix., fess, 0, pl. Xi. 1s 12. In a pond at Foxton Lane, Sedgefield (A. M. N.); and at Stocksfield, where it was found by Mr. H. B. Watson (G.S. B.) NED: CyPRINOTUS INCONGRUENS (Rambohr). 1896. Cypris incongruens, Brady and Norman (3), p. 721, plolxiv., figssm7, 18) pl. Ixviii. digs: 22eeaN This species seems to like a slight admixture of salt in the water which it frequents. Seaton Delaval, Northumberland ; Rainton and Seaton Carew, Co. Durham (A. M. N.) N.D: CYPRINOTUS PRASINUS (S. Fischer). 1889. Cypris prasina, Brady and Norman (2), p. 78. 1896. Cyprinotus prasinus, Brady and Norman (3), p. 722. 94 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Cooling ponds at Monkwearmouth Colliery, and in a salt marsh north of the river Coquet below Warkworth (G. S. B.) ; Seaton Delaval, Northumberland, and Rainton Meadows, Co. Durham (A. M. N.) This species requires apparently a certain amount of salt in the water which it inhabits. Canon Norman has taken the species in the Botanical Gardens at Palermo, Sicily, whence the type specimens of S. Fischer came. N-D: ILYOCYPRIS BISTRIGATA (Jurine). 1866. Cypris gibba, Brady (partim) (1), p. 369, pl. xxiv., figs. 47-49. 1889. L/yocypris gibba, Brady and Norman (partim) (2), p. 105. 1890. L/yocypris Brady, G. O. Sars, “ Oversigt af Norges Crustaceer. Branch., Ostrac., Cirrip.,” p. 50. 1891. Llyocypris gibba, var. repens, Vavra, Monog. der Ostracoden Bohmens, p. 60, fig. 18. 1896. Llyocypris Bradit, Brady and Norman (3), p. 728, pl. Ixiil., figs. 22, 23, pl. Ixviii., figs. 18, 19. 1900. J/yocypris Bradyi, G. W. Miiller (4), p. go, pl. xix., figs. 11-19, pl. xx., figs. 17, 18. 1900. Llyocypris Bae Kaufmann (5), p. 353; ee XXIV, fiSSa 2, ple XXVegteS, Lye TO. Dr. A. Kaufmann (Cypriden und Darwinuliden) has divided what used to be considered Cyf77s gibba into no less than five species; whether these forms are really of specific value further investigations must determine. Meanwhile we include under the name //yocyprts bistrigata the forms which have the swimming setz shorter than the following joint, and which are assigned by Kaufmann to two of his species, namely, 7. Bradyt and J. iners. Our local specimens are referable only to the former species. A common species. Among other localities we have speci- mens from Newbiggin and Seaton Delaval, Northumberland ; Lambton Park, Rainton Meadows, and Seaton Carew, Co. Durham. N.D. xo) wn CRUSTACEA OF NORTHUMBERLAND AND DURHAM HERPETOCYPRIS REPTANS (Baird)=Candona virescens G. S. Brady (the young). Dr. Kaufmann has described several species which are nearly allied to this. Very common, especially in grassy pools and ditches, but also found in lakes. NED: HERPETOCYPRIS STRIGATA (O. F. Miiller). Rare in the British Islands. In the burn at Fulwell Cemetery, Sunderland (G. S. B.) IDs HERPETOCYPRIS TUMEFACTA (Brady and Robertson). Warn Burn and the Coquet, Northumberland (Brady and Robertson); near Sunderland (G. S. B.) N-D: PRIONOCYPRIS SERRATA (Norman)= Cyfr7s bicolor W. Miiller= Cypris Zenckert Toth and Chyzer. 1863. Candona serrata, Norman, Trans. Tyneside Nat. Field Club, vol. v., p. 148, pl. i11., figs. 1-6. 1889. Herpetocypris serrata, Brady and Norman (2), p. 57. 1896. Prionocypris serrata, Brady and Norman (3), p. 725. 1900. Prionocypris serrata, Kaufmann (5), p. 297, pl. xx., figs. 10-12, pl. xxi., figs. 22-26. 1900. Cypris serrata, G. W. Muller), p. 72, pl. xiv. fte'sosss, 11, 14: Very abundant in the Forge Dam at Sedgefield (A. M.N.); Fardingslake, near Marsden (G. S. B.) D: ILyoDROMUS ROBERTSONI (Brady and Norman). 1889. Lrpetocypris Robertsont Brady and Norman (2), p. 88, woodcut. 1896. L/yodromus Robertsonit, Brady and Norman (3), Pp: 724- j In a shallow ditch by the side of the road between Haydon Bridge and Staward (G. S. B.) N. CyPRIDOPSIS ACULEATA (O. G. Costa). 1863. Cyprts aculeata, Norman, Trans. Tyneside Nat. Field Club, vol. v., p. 147, pl. i11., figs. 7-9. C. aculeata Costa from Naples was subsequently given the very same name by Lilljeborg from Sweden. 96 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Seaton Carew and Cowpen Marshes, Co. Durham; New- biggin (A. M. N.); Monkwearmouth Colliery Pond, Hylton Dene, and Warkworth (G. S. B.) N.D. CyPRIDOPSIS VILLOSA (Jurine). Very abundant in the Forge Dam, Sedgefield; Rainton Meadows, Co. Durham; Newbiggin (A. M. N.); Belsay East Lake (now drained) and near Crag Lake; Silksworth, and Fulwell (G. S. B.) NEE: Pionocypris vipua (O. F. Miiller). 1896. Pionocypris vidua, Brady and Norman (3), p. 726. Common in small ponds of clean water, and in lakes. N.D. PIONOCYPRIS OBESA (Brady and Robertson). 1895. Pionocypris obesa, Brady and Norman (3), p. 726. Fulwell Cemetery, near Sunderland (G. S. B.) D. PROTEOCYPRIS SALINA G. S. Brady. 1907. Proteocypris salina, Brady (G. S.), Trans, Nat. Hist. Soc. Northumberland, Durham, and Newcastle-upon- Tyne, new ser., vol. i., p. 334, pl. x., figs. 1-12. This species was described from specimens taken in a salt- water pond at Amble, Northumberland (G. S. B.) N. PoraMocyPRIS FULVA G. S. Brady. Fulwell Cemetery, and near the mouths of several rivers in Northumberland—Warn Burn, rivers Coquet, Wansbeck, and Blyth (G. S. B.) ND: NoropROMAS MONACHA (O. F. Miiller). Fishburn, Co. Durham (A. M. N.); many places in the counties of Northumberland and Durham (G. S. B.) N.D. CANDONA CANDIDA (O. F. Miiller). Foreign authors (Hartwig, Kaufmann, and G. W. Miiller) have described a large number of forms as species allied to C. candida and C. compressa; and certainly either C. candida is an extremely variable form or several species have in the past been improperly associated under that name. Very common in ditches, ponds, and lakes. N.D. 97 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CANDONA NEGLECTA G. O. Sars. 1887. Candona neglecta, G. O. Sars, Nye Bidrag til Kunds- kaben om Middelhavets Invert. Fauna, IV., Ostracoda Mediterranea, p. 279, pl. xv., figs. 5-7, pl. xix., figs. 1-21. 1889. Candona candida, var. neglecta, Brady and Norman (2), p. 99, pl. x., figs. 18-21. 1891. Candona fabeformis, Vavra (not Fischer), Mon. der Ostracoden Bohmens, p. 45. 1898. Candona Vavrai, Hartwig, “In Candona fabzformis stecken drei verschiedene Arten.” Zoolog. Anzeiger, vol xxi., p. 566. 1900. Candona neglecta, Kaufmann (5), p. 387, pl. xxix., figs. I=5, pl. xxx., figs. 12-19, pl. xxxi., fig, 21. 1900. Candona neglecta, G. W. Miiller (4), p. 17, pl. i, figs. 4-6, 13-18. Chester Road, Sunderland (G. S. B.) Further research will probably prove that this species, hitherto confounded with C. candida, is widely distributed in the two counties. 1B), CANDONA CLAVIFORMIS Brady and Norman. 1889. Candona candida, var. claviformis, Brady and Norman, Mon. Marine and Freshwater Ostracoda, &c. Trans. Roy. Dublin Soc., ser. 2, vol. iv., p. 98, pl. x., fig. 1 3. Taken several times in years 1859-68 in a pond in a field adjoining the Rectory at Sedgefield, Co. Durham, and subse- quently near Seaton Delaval (A. M. N.). The two sexes will shortly be described and figured in a paper which Dr. Brady has in preparation on the genus Candona. N.D. CANDONA CAUDATA Kaufmann. 1892. Candona acuminata, Kaufmann, Die Ostracoden der Umgebung Berns. Mittlg. d. naturf. Ges. Bern, p. 70. 1900. Candona caudata, Kaufmann, Cypriden und Darwin- uliden der Schweiz. Revue Suisse de Zoologie, vol. viii., p: 365, pl. xxiv., figs. 16—20, ‘pl--xxvi., figs. 17-23. East Lake at Belsay, Northumberland (now drained and built over) (G. S. B.) N. 9s CRUSTACEA OF NORTHUMBERLAND AND DURHAM CANDONA ZETLANDICA (Brady). 1868. Cytheridea zetlandica, Brady (1), p. 428, pl. xxviil., figs. 42-46. 1870. Candona candida, var. tumida, Brady and Robertson, Ann. and Mag. Nat. Hist., ser. 4, vol. vi., p. 16, pl. ix., figs. 13-15. 1889. Candona candida, var. tumida, Brady and Norman (2), p. 99, pl. x., figs. 14-17. 1898. Candona Weltnert, Hartwig, Eime neue Candona aus der Provinz Brandenburg. Sitz. der Gesellsch. naturfor. Freunde zu Berlin, vol. xxi., p. 50. 1900. Candona Weltnert, G. W. Miiller (4), p. 16, pl. iii., fiSS. 3,14, 13, 14, 17-20. Rivers Coquet, Blyth, and Wansbeck, and Wark Burn, Belsay East Lake, Seaton Burn, and Alnmouth, Northumber- land (G. S. B.) Ne CANDONA LACTEA Baird. Sedgefield and Seaton Carew Marshes ; Newbiggin (A. M. N.); Budle Bay and rivers Aln and Coquet (G: S. B.) N.D. CANDONA ROSTRATA Brady and Norman. This is not C. rostrata G. W. Miiller which is C. marchica Hartwig. Newbiggin (A. M. N.) N. CANDONA COMPRESSA (Koch), 1864. Candona albicans, G. S. Brady, Trans. Tyneside Nat. Field Club, vol. vi., p. 107, pl. iil., figs. 6-10 (the young). 1868. Candona compressa, Brady (1), p. 382, pl. xxvi., figs. 22-27. 1889. Candona pubescens, Brady and Norman (2), p. ror, pl. xil., figs. 32-37. 1896. Candona compressa, Brady and Norman (3), p. 728. 1901. Candona compressa, Hartwig (6), p. 104. Sedgefield, Seaton Carew Marshes, Rainton Meadows, pond in Lumley Dene (A. M. N.), Sunderland (G. S. B.) D. 99 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CANDONA ZENCKERI G. O. Sars. 1890. Candona Zenckeri, G. O. Sars, “ Oversigt. af Norges Crustaceer, II., Branch., Ostrac., Cirrip.” Vidensk.- Selsk. Forhand., p. 66. 1896. Candona Zenckeri, Brady and Norman (3), p. 739, plalxir ne. 25, plo ixvili., figss 125.13: The only specimens as yet known in Great Britain were taken in a pond near Ferry Hill (A. M. N.) D. CANDONA STAGNALIS G. O. Sars. 1890. Candona stagnalis, G. O. Sars, “ Oversigt. af Norges Crustaceer, II., Branch., Ostrac., Cirrip.” Vidensk.- Selsk. Forhand., p. 69. 1891. Candona ambigua, T.Scott, “ Invert. Fauna of Inland Waters of Scotland.” Ninth Rep. Fish. Board Scot- land, p. 277, pl. iv., figs. 7 a-c 4. 1896. Candona stagnalis, Brady and Norman (3), p. 729, pl. Ixvil., figs. 14-17. 1900. Candona rara, G. W. Miiller (4), p. 22, pl. v., fig. 1, pl. vi., figs. 2, 3, 14-16. 1901. Candona pubescens, Hartwig (6), p. 96. Found in a pool near Broomley. Lake, Northumberland (A. M.N.) N: Canponopsis KINGSLEI (Brady and Robertson). 1889. Candona Kingslett, Brady and Norman (2), p. 102, pl. ix., figs. 19-22, pl. xiii., fig. 19. 1891. Candonopsis Kingslett, Vavra, Monog. der Ostracoden Bohmens, p. 54. 1900. Candonopsis Kingslett, G. W. Miiller (4), p. 38, pl. vi., figs. 23-28, pl. vil., figs. 22-25. 1900. Candonopsis Kingslett, Kaufmann (5), p. 357, pls xxiv., figs, S11, (pl. xxvig figss®1—9, pil xxx. figs 175 1go1. Candonopsis Kingsleii, Hartwig (6), p. 127. Crag Lake, Northumberland (A. M. N.) N. PONTOCYPRIS MYTILOIDES (Norman). Not rare in the littoral and laminarian zones. NED: 100 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PontocypRis ACUPUNCTATA G. S. Brady. Budle Bay, Northumberland, and off Marsden, Durham, 10 fathoms (G. S. B.) N.D. PONTOCYPRIS TRIGONELLA G. O. Sars. This species is apparently scarce on this coast. Budle Bay, Northumberland (G. S. B.) N. ARGILLCECIA CYLINDRICA G. O. Sars. Off Seaham and Marsden (G. S. B.) D. ARGILLECIA PROPINQUA G. S. Brady. 1903. Argillecta propingua, G. S. Brady, Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new SEI., VOl.1., D- 7, Dlail, fies. Is: Twenty-five miles east of Alnmouth in 59 fathoms (G. S. B.) N. Fam. 2.—CYTHERID CYTHERE LUTEA O. F. Miiller. Abundant between tidemarks. N.D. CYTHERE PELLUCIDA Baird=Cythere castanea G. O. Sars and Brady (olim.) Common in salt-marshes and estuaries. N.D. CyYTHERE CONFUSA Brady and Norman=Cythere pellucida Brady et auct. (not Baird). Dredged in comparatively deep water, 25-46 fathoms, and also common on muddy ground in estuaries and tidemarks. N.D. CyTHERE PORCELLANEA G., S. Brady. More frequently found than the last in estuaries, and dredged in shallow water. N-D, CyYTHERE TENERA G. S. Brady. Generally dredged, but has been found by G. S. B. between tidemarks at Whitley and Cullercoats. N.D. CYTHERE SEMIPUNCTATA G, S. Brady. Budle Bay and Seaton Sluice, Northumberland, and off the coast of Durham (G. S. B.) ND; IOI H CRUSTACEA OF NORTHUMBERLAND AND DURHAM CYTHERE CRISPATA G. S. Brady. Off Marsden, to fathoms (G. S. B.) D. CyTHERE GIBBOSA Brady and Robertson. Budle Bay and several estuarine situations on the Northum- berland coast (G. S. B.). The Tweed above Berwick ; river Lyne near Newbiggin ; and marshes at Seaton Carew (A.M.N.) CYTHERE ALBOMACULATA Baird. Common between tidemarks, and recorded by G. S. B. from a freshwater lake at Bolam, Northumberland. The Bolam habitat must be looked upon as doubtful; a renewed search there has resulted in failure to find the species, and it is possible that it found its way accidentally into the earlier gathering. ND: CyTHERE RoBeERTSONI G. S. Brady. Budle Bay, Northumberland ; Sunderland, tidemarks, and in several places off the Durham coast in 29-55 fathoms (Ga5>B) 5) Seatonssluicer(AciMisN:) ND; CyTHERE LIMICOLA (Norman). 1866. Cythereis linicola, Norman, Nat. Hist. Trans. North- umberland and Durham, vol. i., p. 20, pl. vi., figs. 1-4. Confined to the coralline zone, but not rare at such a depth off the coast. ND: CyTHERE CUNEIFORMIS G. S. Brady. More generally found in 15—40 fathoms, but also occurs in several estuarine localities in Northumberland, and has been found between tidemarks on mud-covered rocks at Whitley (G. S. B.); Seaton Delaval (A. M. N.) N-D: CYTHERE NAVICULA (Norman). Budle Bay, Northumberland (G. S. B.) INE CYTHERE VILLOSA (G. O. Sars). Among small weeds between tidemarks in estuaries, and more rarely dredged. The specimens referred to C. borealis Brady taken at Seaton Carew, belong really to C. villosa. IND. 102 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CYTHERE QUADRIDENTATA Baird. Occasionally occurring in deep water off the coast. N.D. CYTHERE FMACIATA G. S. Brady. Found under similar circumstances to the last, but much rarer. N.D. CYTHERE TUBERCULATA (G. O. Sars). Frequent in deep water. On some parts of our coasts it is found living between tidemarks, but has not yet occurred under such circumstances on the north-east coast. IND: CYTHERE CONCINNA Rupert Jones. Occasionally occurring in deep water. NED: CYTHERE FINMARCHICA (G. O. Sars). Another deep water form which has been found off the coasts both of Northumberland and Durham. N.D. CYTHERE ANGULATA (G. O. Sars). Found off the coast in deep water, but rare. N.D. CYTHERE DUNELMENSIS (Norman). 1865. Cytherets dunelmensts, Norman, Nat. Hist. Trans. Northumberland and Durham, vol. i., p. 22, pl. vii. figs. 1-4. A fine species which is not rare in deep water off the north-east coasts. N.D. CyTHERE JONEsII (Baird). 1865. Cytherets Fonestt, Norman, Nat. Hist. Trans Northumberland and Durham, vol. i., p. 21, pl. vii, figs. 5-8. Common in deep water, and the most beautiful representative of the genus in our fauna. N.D. LIMNICYTHERE INOPINATA (Baird). Hardwick Lake, Sedgefield, and Raby and Lambton Parks (A. M. N.); Fulwell Cemetery, Gibside, and in a millstream at Hedworth, Co. Durham, and in East Belsay Lake, North- umberland, and in many estuarine localities (G. S. B.) N.D. 103 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CYTHERIDEA PAPILLOSA Bosquet. 1865. Cythere debilis, Norman, Nat. Hist. Trans. Northum- berland and Durham, vol. i., p. 15, pl. v., figs. 5-8. In deep water, somewhat local, but common when found. IN/AIDE CYTHERIDEA PUNCTILLATA G. S. Brady. Seaton Carew (G. S. B.) D. CYTHERIDEA ELONGATA G. 5S. Brady. On muddy rocks at low-water mark at Seaton Carew (G5.B.) 1D CYTHERIDEA TOROSA (Rupert Jones). 1864. Cyprideis torosa, Brady, Trans. Tyneside Nat. Field Club, vol. vi., p. 108, pl. 111, figs. 11-23. 1868. Cytheridea littoralis, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. ii1., p. 6. In brackish water, Warkworth, Alnmouth, Cambois, Seaton Sluice, and Jarrow Slake (G. S. B.); Hartlepool (A. M. N.). Inland in fresh water in the Forge Dam at Sedgefield (A. M.N.); and at Belsay (G. S. B.) ING: EucyYTHERE DECLIvIs (Norman). 1865. Cythere declivis, Norman, Nat. Hist. Trans. North- umberland and Durham, vol. i., p. 16, pl. v., figs. 9-12. In deep water off the coast, but not common. Both the varieties argus Sars and anglica Brady are found upon the coast. N.D. KRITHE BARTONENSIS (Rupert Jones). Taken by G.S. B. off both the Northumberland and Durham coasts in 30-60 fathoms, but very local. ND: LoxocoNCHA IMPRESSA (Baird). Frequent in rock pools and estuaries, and in moderate depths off the coast. NSD: LOXxOCONCHA VIRIDIS (O. F. Miiller). This is Cythere rhombotdea S. Fischer and Loxoconcha elliptica G. S. Brady. Essentially a brackish water species. Rivers Aln, Coquet, Wansbeck, and Blyth (G. S. B.); Seaton Sluice and Hartle- pool CAs MIN:) N.D. 104 CRUSTACEA OF NORTHUMBERLAND AND DURHAM LOXOCONCHA MULTIFORA (Norman). 1865. Cythere multifora, Nat. Hist. Trans. Northumber- land and Durham, vol. i., p. 18, pl. vi., figs. 13-16. Off Holy Island, 1864 (A. M. N.); Budle Bay, Northumber- land) (Ges.ve>) N. LoxocoNCHA GUTTATA (Norman). 1865. Cythere guttata, Norman, Nat. Hist. Trans. North- umberland and Durham, vol. 1., p. 19, pl. vi., figs. 9-12. 1870. Loxoconcha granulata, G.S. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. ii., p. 368, pl. xiii, figs. 5-7. Dredged in 1864 off Holy Island, and also to-15 miles off Seaham in about 4o fathoms (A. M. N.); 29 miles E. of Aln- mouth in 59 fathoms, and several places off the Durham coast in 20-30 fathoms (G. S. B.) INGE: LOXOCONCHA TAMARINDUS (Rupert Jones). 1865. Cythere levata, Norman, Nat. Hist. Trans. North- umberland and Durham, vol. i., p. 18, pl. v., figs. 13-16. Off Holy Island (A. M. N.); Northumberland and Durham coasts in tide-pools and in 30-46 fathoms, also in estuaries as Budle Bay and river Blyth (G. S. B.) NUD: LoxocoNCHA PUSILLA Brady and Robertson. Budle Bay and rivers Wansbeck and Blyth, Northumber- land (G. S. B.); Seaton Delaval (A. M. N.) N. LoxocoNcHA FRAGILIS G. O. Sars. Budle Bay, Northumberland (G. S. B.) N. XESTOLEBERJS AURANTIA (Baird). Common between tidemarks and in estuaries. In 1891 G. S. B. took it at 29 miles E. of Alnmouth in 59 fathoms. N.D. XESTOLEBERIS DEPRESSA G. O. Sars. The last is usually a tidemark species ; this on the contrary is an inhabitant of the ultra-littoral region, and descends to deep water, where it is not uncommon. N.D. 105 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CYTHERURA GIBBA (O. F. Miiller). Berwick-on-T'weed and Seaton Sluice, fine and abundant (A. M. N.); near the mouth of several Northumberland rivers (G.S..B:) N. CYTHERURA CORNUTA G. S. Brady. Berwick-on-Tweed (A. M. N.); between tidemarks at Boulmer, Northumberland (G. S. B.) N. CYTHERURA SELLA G. O. Sars. This is C. cuneata g and C. flavescens 9 of Brady. Common between tidemarks and in estuaries. N.D. CYTHERURA ACUTICOSTATA G. O. Sars. Tidemarks, but not common; also river Blyth and off Holy Island ; Hawthorn and Castle Eden in 20 fathoms (G. S. B.) N.D. CyTHERURA STRIATA G. O. Sars. Cytherura quadrata Norman is the female of this species. Common between tidemarks, amidst the fine weeds and Corallina ; as well as dredged. N.D. CYTHERURA ANGULATA G. S. Brady. Tidemarks, and dredged, but a much scarcer species than the last; also in estuaries, as those of the rivers Blyth and Wansbeck (G. S. B.); Seaton Delaval, tidemarks (A. M. N.) N.D. CYTHERURA UNDATA G. O. Sars. This is seldom abundant, but distributed ; more usually in the coralline zone, but also in estuaries, as those of the rivers Wansbeck and Blyth (G. S. B.) N.D. CyTHERURA PRODUCTA G. S. Brady. Off the Durham. coast, and at the mouth of the Aln (Go 5:1 be) NeD: CyYTHERURA NIGRESCENS (Baird). The commonest Cytherura between tidemarks, where it may be met with almost everywhere. N.D. CYTHERURA CONCENTRICA Brady, Crosskey and Robertson. Seaton Delaval and Hartlepool (G. S. B.) ND. 106 CRUSTACEA OF NORTHUMBERLAND AND DURNAM CYTHERURA SIMILIS G. O. Sars. This is Cytherura Sarstt Brady and Cytherura propinqua Brady and Robertson. Seaton Delaval, tidemarks (A. M. N.); Boulmer ; off Seaham Harbour ; and at low-water mark at Seaton Carew (G. S. B.) N.D. CyYTHERURA FULVA Brady and Robertson. In 20-30 fathoms off the Durham coast, and between tide- marks at Boulmer, Northumberland (G. S. B.); Seaton Delaval, between tidemarks (A. M. N.) ND, CyYTHERURA CLATHRATA G. O. Sars. Between tidemarks at Whitley and Seaton Sluice, and dredged off Hawthorn in 20 fathoms (G. S. B.) N.D- CYTHERURA CELLULOSA (Norman). 1865. Cythere cellulosa, Norman, Nat. Hist. Trans. Northumberland and Durham, vol. i., p. 22, pl. v., figs. 17-20, and pl. vi., fig. 17. Between tidemarks and dredged, not rare. N.D. CYTHEROPTERON LATISSIMUM (Norman). 1865. Cythere latissima, Norman, Nat. Hist. Trans. North- umberland and Durham, vol.i., p. 19, pl. vi., figs. 5-8. Off Holy Island, and on the Dogger Bank, and off Seaham (A. M. N.); twenty-nine miles E. of Alnmouth in 49-60 fathoms, and off Souter Point in 30-39 fathoms, abundant and fine (G. S. B.) Nip: CYTHEROPTERON ALATUM G. O. Sars. Very rare, 30 miles off Sunderland in 40-45 fathoms (G,S: B2) dD, CYTHEROPTERON NObDOsUM G. S. Brady. On the Dogger Bank (A. M. N.); mouth of the Wansbeck river and off the coast of Durham (G. S. B.) ND: BytHOCYTHERE TURGIDA G. O. Sars. 1870. Bythocythere turgida, G.S. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iii., p. 372, pl. xiii., figs. 1-4. Twenty-nine miles E. of Alnmouth in 59 fathoms ; off Souter Point in 30-40 fathoms (G. 5S. B.) N.D. 107 CRUSTACEA OF NORTHUMBERLAND AND DURHAM BYTHOCYTHERE CONSTRICTA G. O. Sars. Off the Durham coast in 20-35 fathoms, and also off Northumberland (G. S. B.) N.D. BYTHOCYTHERE SIMPLEX (Norman). 1865. Cythere simplex, Norman, Nat. Hist. Trans. Northumberland and Durham, vol. 1. p. 17, pl. v., figs. I-4. The types were dredged in 1862 about roo miles off Tyne- mouth, and it was again taken in 1864 off Holy Island (A. M.N.). In several places off the Durham coast in 20-40 fathoms, twenty-nine miles E. of Alnmouth in 40-60 fathoms, and off Souter Point in 30-40 fathoms (G.S. B.). Living specimens in very fine condition were taken during the dredging excursions of 1901-2, generally associated with equally fine captures of Cythere Fonesit. NUD: PSEUDOCYTHERE CAUDATA G,. O. Sars. Occasionally dredged, but not common. N:D: SCLEROCHILUS CONTORTUS (Norman). Off the coasts in 20-46 fathoms, and also between tide- marks. NED: CYTHERIDEIS SUBULATA G. S. Brady. Boulmer, near Whitley, Northumberland; Sunderland and Seaton Carew (G. S. B.); Seaton Delaval (A. M. N.); tide- marks and shallow water. NED: CyTHEROIS FISCHERI (G. O. Sars). 1870. Paradoxostoma Fischert, G. S. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iii., p. 362, ple xi, figs. 10,11. Budle Bay, Boulmer, Seaton Delaval, Northumberland ; Sunderland ; off Marsden and Seaham 33-35 fathoms (G.S. B.); Warkworth (A. M. N.) N.D. PARADOXOSTOMATIDZ PARADOXOSTOMA VARIABILE (Baird). Fam. 3. Abundant between tidemarks and in shallow water. N.D. 5 108 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PARADOXOSTOMA ENSIFORME G. S. Brady. Frequent between tidemarks. NLD: PARADOXOSTOMA ABBREVIATUM G. O. Sars. Tidemarks Budle Bay, Boulmer, and Seaton Carew; 20 fathoms off Hawthorn (G. S. B.) NED: PARADOXOSTOMA OBLIQUUM G. O. Sars. Muddy rocks at low water, Whitley (G. S. B.); Seaton Delaval (A. M. N.) ND: PARADOXOSTOMA NorMANI G. S. Brady. Seaton Sluice and Budle Bay, Northumberland; off the Durham coast 10-20 fathoms (G. S. B.) N.D. PARADOXOSTOMA PULCHELLUM G. O. Sars. 1870. Paradoxostoma pulchellum, G.S. Brady, Nat. Hist Trans. Northumberland and Durham, vol. iii., p. 363 ple xi, figs. 4) 5. Boulmer, Seaton Carew, Hartlepool, all tidemarks (G. S. B.) aves PARADOXOSTOMA HIBERNICUM G. S. Brady. 1870. Paradoxostoma hibernitcum, G.S. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iii., p. 362, pl. xii., figs. 10, II. Boulmer, tidemarks, and Seaton Delaval (G. S. B.) N. ParADoxostoMA Hopcer G. S. Brady. 1870. Paradoxostoma Hodgei, G. S. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iii., p. 371, Die xi, MoS. 12,13: Off Seaham Harbour (G. S. B.) D. PARADOXOSTOMA FLEXUOSUM G. S. Brady. Off the coast and in estuarine mud, but not common. N.D. MACHERINA TENUISSIMA (Norman). 1870. Xiphichilus tenutssimus, G. S. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iii., p. 369, pl. xil., figs, 6-9, and pl. xiv., figs. 5-10. Fourteen miles off Seaham, 35 fathoms, and 5-17 miles off Souter Point, 30-60 fathoms (G. S. B.) D. 109 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Section IIL—MYODOCOPA Fam. 1.—ASTEROPIDA: ASTEROPE TERES (Norman). Fourteen miles off Seaham in 35 fathoms (G. S. B.) D. ASTEROPE MARi#® (Baird). About 30 miles off Alnmouth in 39 fathoms (G.S. B.) N. Fam. 2,—CYPRIDINID/Z PHILOMEDES BRENDA (Baird). Forty to fifty miles off Tynemouth, and off the coast of Durham near the Dogger Bank (A. M. N.); 14 miles off Seaham in 35 fathoms, and 25 miles east of Alnmouth in 50 fathoms (G. 5. B.) NED: PHILOMEDES INTERPUNCTA (Baird). Off Northumberland in deep water (A. M.N.) ; off Marsden, Hawthorn, and Sunderland, 20-45 fathoms (G. S. B.) N.D, Section II].—CLADOCOPA Fam. 1.—POLYCOPID/ POLYCOPE ORBICULARIS G. O. Sars. Several places off the coast of Durham (G. S. B.) N. SEecTION IV.—PLATYCOPA Fam. 1.—CYTHERELLID CyTHERELLA SERRULATA Brady and Norman. About 30 miles off Alnmouth in 39 fathoms (G. S. B.) N. CYTHERELLA ABYSSORUM G. O. Sars. This is C. scotica G. S. Brady. Fourteen miles off Seaham in 35 fathoms (G. S. B.) iD): OrbER IX.—COPEPODA For information as to the British species of Copepoda the following works will be found useful. These are referred to in the synonymy by the numerals attached to each. 1. Baird (W.). Natural History of the British Entomostraca, London, Ray Society, 1850. TIO CRUSTACEA OF NORTHUMBERLAND AND DURHAM 2. Claus (Dr. C.). Die frei lebenden Copepoden, mit besonderer Beriicksichtigung der Fauna Deutschlands, der Nordsee und des Mittelmeeres, Leipzig, 1863. 3. Brady (G.S.). A monograph of the free and semi-parasitic Copepoda of the British Islands, 3 vols., London, Ray Society, 1878-80. 4. Brady (G. S.). A revision of the British species of fresh- water Cyclopide and Calanide. Nat. Hist. Trans. Northumberland and Durham, vol. xi., 1891. 5. Giesbrecht (Dr. Wilhelm). Systematik und Faunistik der pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte, Berlin, 1892. 6. Sars (G. O.). An Account of the Crustacea of Norway, vols. iv., v., Copepoda, 1904-9 (in course of publica- tion). 7. Norman(A. M.) and Scott (T.). The Crustacea of Devon and Cornwall, 1906. Scott (T. and A.). Numerous papers chiefly in the Annual Reports of the Fishery Board for Scotland. The classification here adopted for the Copepoda is based chiefly on that used by Professor G. O. Sars in his work on the “ Crustacea of Norway” now in course of publication. Section I.—CALANOIDA Fam. 1.—CALANIDE CALANUS SEPTENTRIONALIS (H. Goodsir). 1843. Cetochilus septentrionalts, Goodsir, Edinburgh New Philos. Journ., xxxv., p. 336, pl. vi., figs. 1-11. 1863. Cetochilus helgolandicus, Claus (2), p. 171, pl. XxVi., figs. 2-9. 1878. Calanus finmarchicus, Brady (3), vol. i., p. 38, pl. i., figs. I-12. 1901. Calanus helgolandicus, G. O. Sars (6), vol. iv., p. 11, pl. iv. 1906. Cefochilus septentrionalis, Norman and Scott (7), p. 126. Itt CRUSTACEA OF NORTHUMBERLAND AND DURHAM This species, hitherto referred by most authors to Monoculus Jinmarchicus Gunner, is considered by Professor G. O. Sars to be distinct, Gunner’s description referring to a closely allied form which is chiefly Arctic in its distribution, and differs in its greater size and in some not very important structural details.* So far as we at present know the true C. fimarchicus does not occur in our district. C. septentrionalis, on the contrary, is often found in immense numbers, usually near the surface in the open sea, but often also in pools of the littoral zone where it has doubtless been left behind by the retreating tide. N.D. Fam. 2.—PSEU DOCALANID: PsEUDOCALANUS ELONGATUS Boeck. 1865. Calanus Clausit, Brady, Nat. Hist. Trans. Northum- berland and Durham, vol. 4, p: 33, pl. 1, figs: x, II-13. 1878. Pseudocalanus elongatus, Brady (3), vol. i, p. 45 pl. ii., figs. 1-9. Very common both in the open sea and in tidal pools. N.D. Fam. 3.—CENTROPAGIDA: CENTROPAGES Typicus Kroyer. 1863. Lchthyophorba denticornis, Claus (2), p. 199, pl. xxxv., figs. I, 3-9. 1865. /chthyophorba denticornis, Brady, Nat. Hist. Trans. Northumberland and Durham, vol. i., p. 40, pl. iv., figs. 1-6. 1878. Centropages typicus, Brady (3), vol. i., p. 65, pl. viii., figs. I-10. 1901. Centropages typicus, G. O. Sars (6), vol. iv., p. 75; pl ssezcliecs, wleneli N.D. * The British form was, however, described by H. Goodsir in 1843 under the specific name seplentrionalis, and as pointed out in the ‘‘ Crustacea of Devon and Cornwall,”’ that name must be adopted if the still earlier one used by Gunner be held to apply to a different species. I12 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CENTROPAGES HAMATUS (Lilljeborg). 1865. Lehthyophorba hamata, Brady, Nat. Hist. Trans. Northumberland and Durham, vol. i., p. 39, pl. iv., figs. 7-10. 1878. Centropages hamatus, Brady (3), vol. i., p. 67, pl. vili., figs. 11-13. 1gor. Centropages hamatus, G. O. Sars (6), vol. iv., p. 76, pl. li. The two foregoing species are of frequent occurrence in the open sea; less frequent in tidal pools. N.D. IstAS CLAVIPES Boeck. 1878. Jsias clavipes, Brady (3), vol. i., p. 62, pl. vii., figs. 3-13. 1go1. Lstas clavipes, G. O. Sars (6), vol. iv., p. 79, pls. liii., liv. This species, though generally distributed round the British Islands, had not been noted in our district until quite recently ; but in several tow-net collections made during the summer of 1905 it occurred rather plentifully. NZD: Fam. 4.—DIAPTOMIDZ DIAPTOMUS CASTOR (Jurine). 1875. Diaptomus castor, Brady (in part) (3), vol. 1., p. 59, pl. vi., figs. 6-13, and (6) p. 92, pl. xi., figs. 1-6. 1901. Diaptomus castor, G. O. Sars (6), vol. iv., p. 85, pls. Ivii., Iwi. This species is found for the most part in ponds and ditches—not so often in larger sheets of water ; not common in our district, nor perhaps in any other part of the country. In ponds at Shotton, Sunderland, and Wardley (G. S. B.); Broomley Lake (A. M. N.) N.D. DIAProMUS GRACILIS G. O. Sars. 1862. Diaptomus gracilis, G. O. Sars, Oversigt af de indenlandske Ferskvandscopepoder, p. 9. 1891. Diaptomus gracilis, Brady (4), p. 94, pl. x1, figs. 7-9, pl. xii, figs. 1-8. 113 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1901. Diaptomus gracilis, G. O. Sars (6), vol. iv., p. 92, pl. Ixi. Syn.: Diaptomus Westwoodtt, Lubbock. An almost exclusively lacustrine species which occurs abundantly in most of the English and Scottish lakes, and generally in ponds and still water. Very plentiful in Tindale and Talkin Tarns, which are just over the border of our restricted district, also in Crag Lake and Chartners Lake (A. M.N.). In Talkin Tarn we have seen the net come up from some few feet below the surface quite alive with shoals consisting chiefly of this species and Lurylemora affinis (G. S. B.) N. Fam. s.—TEMORID TEMORA LONGICORNIS Miiller. 1865. Zemora longicornis, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. 1., p. 36, pl.1., fig. 15, and pl. ii., figs. 1-10, and (3) vol. i, p. 54, pl. iii, figs. 10-19. Syn.: Zemora finmarchica, Baird; and Diaptomus longt- caudatus, Lubbock. This is one of the most abundant of the marine Copepoda. It occurs both in the littoral zone and in the open sea, more plentifully at most seasons than any other of the Calanoida, excepting, perhaps, Calanus septentrionalis. Easily recognised by its very long and slender caudal appendages. N.D. EURYTEMORA VELOX (Lilljeborg). 1865. Zemora velox, Brady, Nat. Hist. Trans. Northumber- land and Durham, vol. i., p. 38, pl. i., fig. 16, and pl. iii., figs. 1-11, and (3) vol. i., p. 56, pl. vi., figs. 1-5. 1891. Eurytemora Clausi, Brady (4), p. 105, pl. xiii, figs. I-5. 1901. Eurytemora velox, G. O. Sars (6), vol. iv., p. 100, pls. Ixvii., [xviii Common, and often very abundant, in the pools of salt marshes, and (in other parts of the country) occasionally in fresh water. Not noticed in this district except in brackish 114 CRUSTACEA OF NORTHUMBERLAND AND DURHAM water. Hylton Dene (habitat now destroyed), Seaton Sluice, Alnmouth, Hartlepool, &c. (G. S. B.) N.D. EuRYTEMORA AFFINIS (Poppe). 1885. Zemorella affinis, Poppe, Die freilebenden Copepoden des Jadebusens (Abhandl. des naturwissenschaft. Vereins zu Bremen, ix. Band), p. 184, Taf. vi., figs. 22-28. 1888. Zemorella affinis, Poppe, var. Airundotdes, Nordquist, Die Calaniden Finlands, Helsingfors, p. 48, Taf. iv., figs. 5-11. 1891. Lurytemora affinis, Brady (4), p. 107, pl. xiil., figs. 6-9. 1901. Lurytemora hirundotdes, G. O. Sars (6), vol. iv., paro2.) pl. lax, Between the typical TZemorella affints and the variety hirundotdes—promoted by Prof. G. O. Sars to the rank of a species—the differences seem to be of degree only, depending upon the amount of development of the posterior angles of the metasome, the hirsute furniture of the furca and some other very slight variations. It seems better to look upon all these forms as belonging to one and the same species. Our only local record is “brackish water ditches at Hartlepool ” (Acai. oN) D. Fam. 6.—METRIDIIDE METRIDIA LUCENS Boeck. 1878. Metridia armata, Brady (3), vol. i, p. 42, pl. ii, figs. 1-12, vol. ii., pl. lvi., figs. 19, 20. 1892. Metridia hibernica, Giesbrecht (5), p. 345, pl. xxxii., IT, pl. XXX, lS. 2, 125,16, 22,126, 30, 20; Syn.: Paracalanus hibernicus Brady and Robertson. The British species assigned in the Ray Society Monograph to Metridia armata Boeck is said by G. O. Sars not to belong to that species, but to JZ. /ucens Boeck. We therefore adopt that view, and are able to include it as taken off North Sunderland, and also three miles off Ryhope (G.S.B.) N.D. 115 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Fam. 7.—PSEUDOCYCLOPIDZ& PSEUDOCYCLOPS CRASSIREMIS Brady. 1878. Pseudocyclops crassiremis, Brady (3), vol. i., p. 82, PLAvil-, tess, 2, pl. xii. fig. m4. The type of this species was taken off Seaham Harbour in a depth of twenty to thirty fathoms—one specimen only. D. Fam. 8.—PONTELLID/E ANOMALOCERA PATERSONII Templeton. 1850. Anomalocera Patersonit, Baird (1), p. 229, pl. xxvii., figs. Ia-l, 2a—c. 1863. Lreneus Patersonit, Claus (2), p. 206, pl. il, fig. 1, pl. xxxvil., figs. 1-6. 1878. Anomalocera Patersonitt, Brady (3), vol. 1. p. 75, pl.xi., figs. 1-14; pl. x., figs: 13) 14. A purely pelagic species, occurring occasionally in great numbers, at other times only sparingly. ‘Taken at all points of the coast. N:D: Fam. 9.—PARAPONTELLID/E PARAPONTELLA BREVICORNIS (Lubbock). 1857. Pontella brevicornis, Lubbock, Ann. and Mag. Nat. ist, 2nd ser, Vol. xx., pl.ext:, fos. 4—o, 1878. Parapontella brevicornis, Brady (3), vol. i. p. 69, pl. ix., figs. 1--16. This, like the preceding species, is at times very abundant in the open sea, generally not very far from shore; itis found also not very unfrequently, but in smaller numbers, between tidemarks. N.D. Fam. 10.—ACARTIIDAE AcartTIA Criaust Giesbrecht. 1878. Dias longiremts, Brady (in part) (3), vol. i., p. 51, pl. v., figs. 144. 1892. Acartia Claust, Giesbrecht (5), p. 507, pl. xxx., figs. 2, 7A, 13-15, 7, 28, 56, 47, mle xl nee. ple xii ess 5, 0A. 1901. Acartia Clausi, G. O. Sars (6), vol. iv., p. 150, pl. ci. 116 CRUSTACEA OF NORTHUMBERLAND AND DURHAM The species belonging to this genus require, as regards their distribution in our district, more attention than they have yet received. The prevailing form, both littoral and pelagic, is undoubtedly that here noted. But other nearly related species, formerly confused with A. Jongtrem?s (Lilljeborg) will probably also be found. N.D. ACARTIA LONGIREMIS (Lilljeborg). 1878. Dias longtremts, Brady (in part), loc. cit. 1892. Acartia longiremis, Giesbrecht (5), p. 522, pl. xxx., fig. 25, pl. xliii., fig. 25. This is taken not unfrequently in the tow-net, though it appears to be by no means so abundant in our district as the preceding species. N.D. SEcTION II.—HARPACTICOIDA The re-arrangement of this group adopted in Professor Sars’ work on the “ Crustacea of Norway” being not yet com- plete, the family divisions are here altogether omitted. MISOPHRIA PALLIDA Boeck. 1864. Misophria pallida, Boeck, Oversigt af Norges Copepoder, p. 24. 1878. Misophria pallida, Brady (3), vol. i., p. 79, pl. xiii., figs. 11-16, pl. xviil., figs. r1, 12. Dredged off Hawthorn in 27 fathoms on a sandy bottom (G.S: Bs) 195 PYERINOPSYLLUS INSIGNIS G. S. Brady. 1878. Lophophorus insignis, Brady (3), vol. i., p. 122, pl. xiii., figs. 1-10, and pl. xv., fig. 10, and vol. iii., p. 23 (Pterinopsyllus ). In the Ray Society Monograph (Joc. ci#.) this species was placed in the family Cyclopide. It is in fact intermediate in character between Cyclopide and Harpacticide, and Professor G. O. Sars has informed us (77 ///¢,) that in his forthcoming work he will place the genus among Harpacticide. We think this right, and therefore adopt the new arrangement. 117 I CRUSTACEA OF NORTHUMBERLAND AND DURHAM The type specimens were dredged in a depth of 27 fathoms off Hawthorn, Co. Durham. More recently it has been taken off Scarborough in 17 fathoms. 1D) LONGIPEDIA CORONATA Claus. 1863. Longipedia coronata, Claus (2’, p. 111, pl. xiv., figs. 14-24. 1903. Longipedia coronata, G. O. Sars (6), vol. v., p. To, pls. 1. and iv. The type species seems to be much less common in British waters than that recently described and named by Professor G. O. Sars, Z. Scotti, L. coronata, however, was found in washings from dredged material taken off Northumberland and Durham in July, 1904, aud off Hartlepool in 25 fathoms many years ago (G. 5. B.) INE DE LonciPepiA Scotti G. O. Sars. 1880. Longipedia coronata, Brady (3), vol. il, p. 6, pISexxxiv. and xxxv« : 1903. Longipedia Scotti, G. O. Sars, An Account of the Crustacea of Norway, vol. v., p. 11, pl. v., fig. 1. (not Longipedia coronata, Claus). The true Zomgipedia coronata of Claus, described by that author in 1863 (Die frei-lebenden Copepoden, p. 111, pl. xiv., figs. 14-24) is said by Professor G. O. Sars to differ from that described and figured in the Ray Society Monograph of British Copepoda. The differences are found chiefly in the spinous armature of the last abdominal segments and second pair of feet. LZ. Scotti is common in moderate depths of water, and on sandy bottoms especially is often very abundant. N=D: EcrinosoMa Sarstt Boeck. 1872. Ectinosoma Sarstt, Boeck, Nye Slegter og Arter af Saltvands-Copepoder, p. 45. 1880. Ectinosoma spintpes, Brady (3), vol. ii., p. 9, pl. Xxxvi., figs. I-10. Common in tidal pools and in moderate depths of water all round the coast. N.D. 118 CRUSTACKA OF NORTHUMBERLAND AND DURHAM EcrinosoMA HERDMANI T. and A. Scott. 1896. Lctinosoma Herdmant, T. and A. Scott, A Revision of the British Copepoda belonging to the genera Bradya, Boeck, and £ctinosoma, Boeck. ‘Trans. Linn. Soc., ser. 2, Zoology, vol. vi., p, 432, pl. xxxvi., figs. 16, 44, pl. xxxvil., figs. 3, 16, 29, 54, pl. xxxviii., figs. 7, 25, 33, 47: Dredged off North Sunderland, September, 1go02. N, EcrinosomMA NorMANI T. and A. Scott. 1896. Lctinosoma Normant, T. and A. Scott, A Revision of the British Copepoda belonging to the genera Bradya, Boeck, and £ctinosoma, Boeck. ‘Trans. Linn. Soc., London, ser. 2, Zoology, vol. vi., p. 435, pl. Xxxvi., Migs. 21, (20, 39, pl. Xxxvil.y figs..12> 26, 24. cn, (ple XXXVlll., figs. 5, 18, 42, 45. Found at the roots of Laminaria, Holy Island (G.S.B.) N. ECriINOSOMA MELANICEPS Boeck. 1864. LEctinosoma melaniceps, Boeck, Oversigt af Norges Copepoder, p. 30. 1880. Lectinosoma melaniceps, Brady (3), vol. ii., p. 11, pl. xl., figs. 17-20. A small species easily distinguished by a circumscribed patch of dusky grey colour on the front of the head. Generally distributed, but our only local records are “ pools at extreme low-water mark, Roker,” Cullercoats, and Alnmouth (G. S. B.) ND: EcTINOSOMA ERYTHROPS G. S. Brady. 1880. Lctinosoma erythrops, Brady (3), vol. ii, p. 12, pl. xxxvi., figs. 11-17. “ Dredged in depths of from five to thirty fathoms off the coasts of South Durham and North Yorkshire.” ‘This seems to be a rare species, but is recorded by Mr. ‘I. Scott from the Firth of Forth, and by the late Mr. I. C. Thomeen from the Trish Sea. D, 119 CRUSTACEA OF NORTHUMBERLAND AND DURHAM ECTINOSOMA BRUNNEA G. S. Brady. 1907. Lctinosoma brunnea, Brady, Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle-upon-Tyne, new series, vol. 1., p. 333, pl. ix., figs. 4-11. Taken in a salt-water pond at Amble, December, 1905. N. MICROSETELLA ROSEA (Dana). 1892. Microsetella rosea, Giesbrecht (5), pp. 550, 554; pl xlive, ties. 32,035, 37, 36,040. 43,40, 40, 40. 1905. Microsetela rosea, Brady, Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new series, VOI, 15 5p, 213, pl. i, fies. 14. One specimen only was found in washings from the dredge taken between St. Mary’s Island and Souter Point. N. Brapya tTypica Boeck. 1872. Bradya typica, Boeck, Nye Slegter og Arter af Saltvands-Copepoder, p. 47. 1880. Bradya typica, G. S. Brady (3), vol. ii, p. 17, pl. xxxvill., figs. 1-10. 1904. Bradya typica, G. O. Sars (6), vol. v., p. 46, pl. xxv. This species is found generally on sandy bottoms, similar to those haunted by Zongipedia. Our only local record is “ off Hartlepool in 25 fathoms ” (G. S. B.) D. PSEUDOBRADYA MINOR (T. and A. Scott). 1896. Bradya minor, TY. and A. Scott, A Revision of the British Copepoda belonging to the genus Avadva Boeck and £ctinosoma Boeck, p. 425, pl. xxxv., figs. 5, 0,003) .2 24s, 35,42, (pl. XX Xvi. oS. Os 1904. Pseudobradya minor, G. O. Sars (6), vol. v., p. 41, ple xxii. fig. 2. 1907. Bradya minor, Brady, ‘Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle-upon-Tyne, new series, vol. i., p. 332, pl. ix., figs. 1-3. Taken in a salt-water pond at Amble, December, 1905. This species may be at once recognised by a conspicuous dark patch near the base of the antennules, N; 120 CRUSTACEA OF NORTHUMBERLAND AND DURHAM ZOSIME ‘lyPIcA Boeck. 1872. Zosime typica, Boeck, Nye Slegter og Arter af Saltsvands-Copepoder, p. 46. 1880. Zosime typica, Brady (3), vol. ii.. p. 15, pl. xxxix., figs. I-12. 1903. Zosime typica, G. O. Sars (6), vol. v., p. 27, pl. xv. Dredged twenty miles off Sunderland on a bottom of muddy sand in forty-five fathoms (G. S. B.) D. CYLINDROPSYLLUS La&VIS G. S. Brady. 1880. Cylindropsyllus levis, Brady (3), vol. iii., p. 30, pl. Ixxxiv., figs. 1-8. 1892. Cylindropsyllus levis, T. Scott, Tenth Annual Report of the Fishery Board for Scotland, p. 258, pl. xiii., figs. 1-18. This species was originally described and figured from a single female specimen taken off Hartlepool in a depth of five fathoms. We have seen no further specimens, but it has been taken in considerable numbers by Mr. T. Scott in the Firth of Forth, and has been fully described and figured by him (Zoc. cit.). The late Mr. I. C. Thompson, of Liverpool, also found it sparingly on the west coast of England. D. HARPACTICUS CHELIFER (O. F. Miiller). 1776. Cyclops chelifer, O. F. Miiller, Zool. Dan. Prodr. 2413. 1850. Arpacticus chelifer, Baird, p. 212, pl. xxix., figs. 2, 3, 3a-g. 1880. Harpacticus chelifer, Brady (3), vol. i, p. 146, pl. Ixiv., figs. 19, 20, pl. Ixv., figs. 1-7, 9, 11, 12, 14, 15. 1904. Harpacticus chelifer, G. O. Sars (6), vol. v., p. 49, pls. XXVil., XXVIIL. One of the commonest of the Harpacticide: frequent between tidemarks—less frequent in greater depths. N.D. Harpactricus FLEXus Brady and Robertson. 1880. Harpacticus flexus, Brady (3), vol. il, p. 152, pl. Ixiv., figs. 12-18. 121 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1904. Harpacticus flexus, Sars (6), vol. v., p. 53, pl. xxx., fie, 2. On roots of Laminariz, Holy Island (G. S. B.) IN: TiGRIOPUS FULVUS (S. Fischer). 1860. Harpacticus fulvus, 5. Fischer, Beitrage zur Kenntniss der Entom. (Abhandl. der Konig. Bayer. Akad., vol. Vill.), p. 656, pl. i., figs. 30-33, pl. i1., figs. 34-39. 1869. Zigriopus Lilljeborgit, Norman, Last Shetland Dredging Report, p. 296. 1880. Harpacticus fulvus, Brady (3), vol. u., p. 149, pl. Ixiv., figs. 1-11. Found all round the coast, mostly in shallow pools at or above high-water mark, and often in vast swarms when the water has become warm with prolonged exposure to the sun. NED: ZAUS SPINATUS Goodsir. 1845. Zaus spinatus, Goodsir, Ann. and Mag. Nat. Hist., vol. xvi., p. 326, pl. xi., figs. 1-8. 1880. Zaus spinatus, Brady (3), vol. i, p. 153, pl. Ixvi., figs. 1-9. 1904. Zaus spinatus, G. O. Sars (6), vol. v., p. 57, pl. xxxill. Not uncommon among weeds, especially near low-water mark all along the coast. N.D. Zaus Goopsiri G. S. Brady. 1880. Zaus Goodsiri, G. S. Brady (3), vol. i., p. 156, pl. Ixvi., figs. 10-13. 1904. Zaus Goodsirt, G. O. Sars (6), vol. v., p. 59, pl. xxxv. Within our district we have seldom seen this species ; it was dredged off Whitley in a depth of twenty fathoms, July, 1899, and one or two specimens were taken in the same year between tide-marks at Alnmouth (G. S. B.) N. ALTEUTHA DEPRESSA Baird. 1850. Alteutha depressa, Baird (1), p. 216, pl. xxx, figs. 1,82; 1868. Alteutha typica, Czerniawsky, Materialia ad Zoogra- phiam ponticam comparatum, p. 34, pl. ili., figs. 15-25, pl. iv., fig. 10. _122 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1880. Leltidium crenulatum, Brady (3), vol. ii., p. 163, pl. Ixxii., figs. 6-15. 1889. Alteutha depressa, Claus, Copepodenstudien I. Peltidien, p. 11, pl. il., figs. g-17. Dr. Baird (/oc. cit.) records this species from “ Berwick Bay, 1835, not common.” Otherwise it does not appear to have been noticed in our district, and partly on this account we have heretofore taken Baird’s species to be that here called Lupelte purpurocincta. But his description, and especially his figures, seem more properly applicable to the present species, and that view has also been taken by so good an authority as Professor Claus. Iie ALTEUTHA INTERRUPTA (Goodsir). 1845. Sterope interrupta 2 and Carillus oblongus é, Goodsir, Several new species of Crustacea allied to Saphirina. Ann. and Mag. Nat. Hist., vol. xvi. p. 326, pl. xi., figs. 10, 12. 1863. Alteutha bopyrotdes, Claus (2), p. 143, pl. xx., figs. 10-17. 1864. Alteutha norvegica, Boeck, Oversigt over de ved Norges Kyster iagttage Copepoder, p. 48. 1880. Peltidium interruptum, G. S. Brady (3), vol. ii., p- 162, pl. Ixxi., figs. 4-15. 1885. Peltidium conophorum, Poppe, Frei-lebende Cope- poden des Jadebusens, pl. vii., fig. 19. 1889. Alteutha bopyroides, Claus, Copepodenstudien I. Peltidien, p. 9, pl. i., figs. 1-11, pl. ii., figs. 1-8. A common species taken mostly in the tow-net, also by the dredge, and less commonly between tide-marks. N.D. EUPELTE PURPUROCINCTA (Norman). 1869. Alteutha purpurocincta, Norman, “Last Report on Dredging off Shetland Isles.” Brit. Assoc. Report, 1868, p. 2098. 1880. Peltidium depressum, Brady (3), vol. ii, p. 160, pl. Ixxii., figs. 1-5. 1889. LEupelte purpurocincta, Claus, Copepodenstudien I, Peltidien, p. 14, pl. iil., figs. 1-8. 123 CRUSTACEA OF NORTHUMBERLAND AND DURHAM This beautiful species is easily recognised by its flattened oval form and its transverse purple band; it is common in low-water pools, chiefly on the fronds of Zaminarta saccharina. N.D. ROBERYSONIA TENUIS (Brady and Robertson). 1876. Lctinosoma tenue, B. and R., Report Brit. Assoc., 1875, p. 196. 1880. Robertsonia tenuis, Brady (3), vol. ii., p. 25, pl. xii, figs. 1-14. Dredged in several places off the Durham coast in depths of from twenty to thirty-seven fathoms (G. 5. B.) 1. TEGASTES* FALCATUS Norman. 1869. Amymone falcata, Norman, “ Last Report on Dredging off Shetland Isles.” Brit. Assoc. Report, 1868, p. 296. 1872. Amvmone rubra, Boeck, Nye Slegter og Arter af Saltvands-Copepoder, p. 49. 1880. Amymone spherica, Brady (not Claus) (3), vol. iL, p. 28; pl. xlix., figs. 1-14. 1903. Amymone rubra, Brady, Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle-on-Tyne, new series, vol. 1., :p: 3, plat, fig. 13. 1904. Zegastes falcatus, Sars (6), p. 69, pl. xl. A scarce but widely distributed species. Dredged in twenty- five fathoms off Marsden and Souter Point; found also at roots of Laminariz at Holy Island (G. S. B.) NED: TTEGASTES LONGIMANA (Claus). 1863. Amymone longimana, Claus (2), p. 115, pl. xx, figs. 13, 14. 1880. Amymone longimana, Brady (3), vol. il, p. 30, plaxlixe, figs. 12) 13. One specimen dredged in a depth of thirty-seven fathoms off Hawthorn (G. S. B.) »: * The generic name Amymone having been twice previously used, by O. F. Miiller in 1785 and by Savigny in 1817, Dr. Norman has proposed to substitute the term Tegasles, 124 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PORCELLIDIUM FIMBRIATUM Claus. 1863. Lorcellidium fimbriatum, Claus (2), p. 140. pl. xxil., fice ns. 1880. Porcellidium fimbriatum, Brady (3), vol. ii., p. 167, pl. Ixx., figs. 1-4. 1904. Porcellidium fimbriatum, G. O. Sars (6), vol. v., p. 76, pls. xliv., xlv. Found chiefly on the fronds of Laminariz between tide- marks, but “sometimes taken by the dredge in considerable numbers where decomposing algz and other vegetable matters are deposited.” In our district the only record is Alnmouth (G. S. B.) Ne ASPIDISCUS LITYORALIS G. O., Sars. 1904. Asfidiscus littoralis, G. O. Sars (6), vol. v., p. 79, pls. xlvi. and xlvii. A beautiful species, easily recognized when well grown by a brilliant crimson patch occupying the centre of the body. Its favourite habitat, as in the case of many of the flattened or depressed Copepoda, is on the fronds of Laminariz. Here it often occurs very abundantly at almost all points of our coast. In the “Monograph of British Copepoda” it was erroneously identified with Asfrdiscus fascratus Norman and Porcellidium fasctatum Boeck. Professor Sars, however, has shown that it differs from both these species, and has proposed for it the specific name ///foralis. PSAMATHE LONGICAUDA Philippi. 1840. Psamathe longicauda, Philippi, Weigman. Archiv fiir Naturgesch., p. 189, pl. iv., fig. 1. 1880. Scutellidium tisbotdes, Brady (3), vol. ii., p. 175, pl. Ixviii., figs. 1-10. 1905. Psamathe longicauda, G. O. Sars (6), vol. 5, p. 83, pl. xlix. This has many characters in common with 7Z%sbe furcata, and is met with in similar situations, but always sparingly. We have seen no local specimens excepting one or two taken at Roker on the fronds of Zaméinaria saccharina(G.S.B.) D. 125 CRUSTACEA OF NORTHUMBERLAND AND DURHAM TISBE FURCAYA (Baird). 1850. Canthocamptus furcatus, Baird (1), p. 210, pl. xxv., figs. I, 2, pl. xxx., figs. 4-6. 1880. /dya furcata, Brady (3), vol. 11., p.172, pl. Ixvuw figs. I-11. 1906. Zisbe furcata, Norman and Scott (7). p. 183. A very common species in tidal pools: much less frequent in the open sea. Very widely distributed, and correspondingly variable in minor characteristics. N.D. THALESTRIS LONGIMANA Claus. 1863. Zhalestris longimana, Claus (2), p. 130, pl. xviii, figs. I-II. 1880. Zhalestris longimana, Brady (3), vol. i, p. 136, plalx., fies.1—13. A very conspicuous species owing to its generally beautiful coloration, but never occurring in any great abundance. Not uncommon between tidemarks all along the coast. New: THALESTRIS BRUNNEA G. O. Sars. 1905. Zhalestris brunnea, G. O. Sars (6), vol. v., p. 108, pl. Ixiil. Specimens taken at Roker on the roots of Laminaria, and doubtfully referred by Dr. Brady to 7. rufo-violascens Claus, are considered by Professor Sars to belong to a species newly described by him under the specific name dvunzea. D. PARATHALESTRIS CLAUsI (Norman). 1905. Parathalestris Claus, G. O. Sars (6), vol. v., p. 111, pls. Ixv., Ixvi. Syn.: Zhalestris Claus?, Brady and Norman. This is one of the commonest of British Harpacticide, being often found plentifully in pools of the littoral zone, as well as in the open sea. NCD: PARATHALESTRIS HIBERNICA (Brady and Robertson). 1873. Thalestris hibernica, B. and R., Ann. and Mag. Nat. Hist., ser. 4, vol. xii., p. 135, pl. viii, figs. 17-19. 120 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1880. Thalestris hibernica, Brady (3), vol. ii. p. 134, pl. xii, figs. 13-17, pl. Ixili., figs. 14, 15. 1905. farathalestris hibernica, G. O. Sars (6), vol. v., Ps Br3; pl. Ixvii: A scarce species. Our only local record is Holy Island, where it was found at the roots of Laminariz. N. PARATHALESTRIS (?) NORTHUMBRICA 00. 10/1. 1905. Zhalestris robusta, Brady, Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new series, vol. i., p. 218, pl. v., figs. 11-17 (not 7%. robusta Claus). One specimen found in a tidal pool at Cullercoats (G. S. B.) ae PARATHALESIRIS (?) DENI (G. S. Brady). 1905. Zhalestris Denti, Brady, Joc. cit., p. 218, pl. vi., figs. 10-15. Found in washings of dredged material taken between St. Mary’s Island and Souter Point, July, 1904(G.S. B.) ND: Of this and the preceding species the male only has been seen, and the generic reference must be considered as provisional merely. PARATHALESTRIS HARPACTOIDES (Claus). 1880. Thalestris harpactotdes, Brady (3), vol. ii., p. 127, pl. 1., figs. 9-16, pl. lix., fig. 1. 1905. Parathalestris harpactoides, G. O. Sars (6), vol. v., p- 112, pl. Ixvii. This species occurred in a surface-net gathering from Teesmouth given to us by the late Mr. E. C. Davison of Sunderland (G. S. B.); rock pools, Seaton Sluice, Northum- berland (A. M. N.) N.D. PHYLLOTHALESTRIS MystIs (Claus). 1880. Thalestris mysis, Brady (3), vol. ii., p. 121, pl. Iviii., figs. I-13. 1905. PAyllothalestris mysts, G. O. Sars (6), vol. v., p. 116, pls. Ixx., Ixxi. In tidal pools among alga, Alnmouth (G. S. B.) Easily recognized by the abnormally large and foliaceous fifth pair of feet in the female. N. 127 CRUSTACEA OF NORTHUMBERLAND AND DURHAM RHYNCHOTHALESIRIS RUFOCINCTA (Norman). 1880. Thalestris rufocincta, Brady (3), vol. i., p. 125, pl. Ivii., figs. 1-9. 1905. Rhyvuchothalestris rufocincta, G. O. Sars (6), vol. v., pro, pls: lxxain., xxiv. Dredged off Marsden, 1o fathoms, and off Hawthorn, 27 fathoms, and at low-water on fronds of Laminariz at Roker (GS-56) D. RHYNCHOTHALESTRIS HELGOLANDICA (Claus). 1880. Thalestris helgolandica, Brady (3), vol. il, p. 123, pl. Ixi., figs. 9-14. 1905. Rhyuchothalestris helgolandica, G. O. Sars (6), vol. v., De tan, ples. Dredged off the Durham coast in 27 fathoms (G. S. B.) D. MICROTHALESTRIS FORFICULA (Claus). 1803. Lhalestris forficula, Claus (2), 9p. 131, pl. xvii, figs. 7-11. 1894. Thalestris forficulotdes, TY. and A. Scott, Twelfth Annual Report of the Fishery Board for Scotland, p. 255, pl. x., figs. 13-25, and On Some New and Rare Crustacea from Scotland (Annals and Magazine of Natural History, ser. vi., vol. xil., 1894). 1905. Microthalestris forficula, G. O. Sars (6), vol. v., p23, plalxxvi. Found at the roots of Laminariz, Holy Island(G.S.B.) N. The foregoing genera farathalestris, Phyllothalestris, Rhynchothalestris, and Microthalestris, previously referred by most authors to Zhades¢ris Claus, are considered by Dr. G. O. Sars to belong to distinct genera to which he has assigned the names here used. DACTYLOPUSIA ‘TISBOIDES (Claus). 1880. Dactvlopus tisboides, Brady (3), vol. il., p. 106, pl. liv., figs. I-13. 1905. Dactylopusia thisboides, G. O. Sars (6), vol. v., p. 126, pls. Ixxvil. and Ixxviil., fig. 1. 128 CRUSTACEA OF NORTHUMBERLAND AND DURHAM One of the commonest of the Harpacticide, occurring abundantly between tidemarks, and less profusely in greater depths of water down to at least 40 fathoms. ND: DACTYLOPUSIA NEGLECTA G. O. Sars. 1880. Dactylopus tisbotdes, Brady (3) (brackish water variety), vol. ii., p. 108, pl. liv., figs. 14-16. 1905. Dactylopusia neglecta, G. O. Sars (6), vol. v., p. 127, pl. Ixxviil., fig. 2. This was briefly noticed and figured in the “ Monograph of British Copepoda” as a brackish water variety of D. fisbordes, but the characters are distinctive enough to have warranted Professor G. O. Sars in giving it specific rank. The only local record is “ brackish pools at Seaton Sluice, Northumber- land” (G. S. B.) NN: DACTYLOPUSIA BREVICORNIS (Claus). 1880. Dactylopus brevicornis, Brady (3), vol. il, p. 118, pl. lvii., figs. ro-12, pl. Ivill., fig. 14. 1905. Dactylopusta brevicornis, G. O. Sars (6), vol. v., paw3o) pla lxxx. Not uncommon on the fronds of Zaminaria saccharina at Sunderland (G. S. B.) D: DACTYLOPUSIA PLATYCHELES (G, S. Brady). 1902. Dactylopus platycheles, Brady, On Copepoda and other Crustacea taken in Ireland and on the North- Kast Coast of England. Nat. Hist. Trans. Northum- berland and Durham, vol. xiv., p. 61, pl. iii., figs. 1-10. Taken among alge at extreme low-water mark, Roker (G2S;°E:) D. DACTYLOPUSIA LONGIROSTRIS (Claus). 1863. Dactylopus longtrestris, Claus (2), p. 127, pl. xvil., figs. 4-6. 1899. Dactylopus longirostris, Brady, On Jlyopsyllus cortaceus and other Crustacea taken at Alnmouth. Nat. Hist. Trans. Northumberland and Durham, vol. xili., p. 434, pl. xill., figs. 9-12. One specimen which we take to belong to this species was got in a pool near low-water mark at Alnmouth (G.S. B.) N, 129 CRUSTACEA OF NCRTHUMBERLAND AND DURHAM DACIYLOPUSIA VULGARIS G. O. Sars. 1880. Dactylopus Stromit, Brady (3), vol. il., p. 111, pl. lv., figs. I-13. 1905. Dactylopusia vulgaris, G. O. Sars (6), vol. v., p. 128, ple lxxiv., fie. 1. “Roker, on Laminaria saccharina, rare” (G.S. B.) 1D: AMENOPHIA PELTATA Boeck. 1864. Amenophia peltata, Boeck, Oversigt Norges Cope- poder, p. 45 (separate copy). 1880. Zhalestris peltata, Brady (3), vol. il., p. 138, pl. lili. figs, LI-15. 1906. Amenophia peltata, G. O. Sars (6), vol. v., p. 136, pls: Ixxkin.and Ixxxiv., fig. 2. One specimen found in a tidal pool at low-water mark, Alnmouth (G. S. B.) Ne DACTYLOPODELLA FLAVA (Claus). 1866. Dactylopus flavus, Claus, Die Copepoden-Fauna von Nizza, p. 28, pl. iii., figs. 13-16. 1880. Dactylopus flavus (partim), Brady (3), vol. il., p. 116, pl. lvi., figs. 1-11. 1905. Dactylopodella flava, G. O. Sars (6), vol. v., p. 132, Pls sexxd. The specimens referred in the ‘ Monograph of British Copepoda” to Dactylopus flavus Claus belonged to two distinct species—D. flavus Claus and Jdomene forficata Philippi. No specimens from Northumberland or Durham having been preserved, it is impossible now to say with certainty which of the two species ought to be recorded in this list, but inasmuch as those taken off Red Cliff, Yorkshire, belong undoubtedly to YD. flavus, it seems fair to assume that the Durham specimens dredged off Hawthorn are also referable to that species. 1D: WESTWOODIA NOBILIS (Baird). 1845. Arpacticus nobilis, Baird, Trans. Berw. Nat. Club, VOloils, spsel5 Se 130 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1888. MWestwoodta nobilis, Brady (3), vol. ii., p. 141, pl. Ixiii., figs. I-13. Recorded by Dr. Baird from Berwick Bay. Very rarely on fronds of Laminaria at Sunderland (G. S. B.) A widely dis- tributed species, but never occurring in great numbers. N.D. DIOSACCUS TENUICORNIS (Claus). 1863. Dactylopus tenuicornts, Claus (2), p. 127, pl. xvi. figs. 17-23. 1880. Diosaccus tenuicornis, Brady (3), vol. ii., p. 68, pl. lix., figs. 12-16, pl. Ix., figs. 14-18. Widely distributed ; living chiefly on the fronds of Laminaria. The only local record is Cullercoats (G. 5. B.) N. AMPHIASCUS IMUs (G. S. Brady). 1872. Stenhelia ima, Brady, Nat. Hist. Trans. Northum- berland and Durham, vol. iv., p. 436, pl. xix., figs. 1-5. 1880. Stenhelia ima, Brady (3), vol. ii., p. 35, pl. xliii., figs. I-14. 1906. Amphiascus imus, G. O. Sars (6), vol. v., p. 156, pl. xevil. Dredged off the Durham coast near Marsden and off Hartlepool (G. S. B.) D. AMPHIASCUS TENUIREMIS (G. S. Brady). 1880. Dactylopus tenutremis, Brady (3), vol. il., p. 115, pl. lvi., figs. 12-18. 1906. Amphiascus tenuiremis, G.O. Sars (6), vol. v., p. 161, pl. ci. Dredged in 45 fathoms 20 miles off Sunderland, and in 30 to 39 fathoms off Souter Point (G. 5. B.) D. AMPHIASCUS HIspIDUS (Brady). 1880. Stenhelia hispida, Prady (3), vol. ii., p. 32, pl. xlii., figs. I-14. ; 1906. Amphiascus hispidus, G. O. Sars (6), vol. v., p. 166, pls. cvii., cviii. Dredged off Hartlepool in five fathoms, and off Marsden, 30 fathoms (G. S. B.) D. Bax CRUSTACEA OF NORTHUMBERLAND AND DURHAM AMPHIASCUS INTERMEDIUS (Scott). 1897. Stenhelia tntermedia, Scott, Marine Invertebrata of Loch Fyne. 15th Annual Report Fishery Board for Scotland, p. 169, pl. il., figs. 10-21. 1906. Amphiascus intermedius, G. O. Sars (6), vol. v., De GOsplicx. A single specimen found among dredged material from a depth of 25 fathoms off Hartlepool (G. S. B.) D. DELAVALIA PALUSTRIS G. S. Brady. 1868. Delavalia palustris, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. iil., p. 134, pl. v., figs. Io-15, and (3) vol. il., p. 43, pl. 1., figs. 1-8. 1906. Stenhelia palustris, G. O. Sars (6), vol. v., p, 185, pleexxnt Found in brackish pools near the mouth of the Seaton Burn, Northumberland, and in similar pools on the Aln above Alnmouth (G. 5S. B.) Professor G. O. Sars considers (/oc. cit.) that the genus Delavalia is really identical with Stexhe/ia Boeck, but Boeck’s definition of Svenhel7a assigns to the first pair of feet a structure “similar to those of Dactylopus,” and of this latter genus he says of the first pair of feet that “the inner branch is elongated, three-jointed, the first joint being very long and bearing two prehensile bristles: the inner branch generally smaller, with its middle joint not much longer than the other two”—both branches being therefore three-jointed. But one of the most distinctive characters of De/avalia is the /¢0- jointed and non-prehenstle inner branch of the first foot. We therefore prefer to retain that generic name. N. DELAVALIA LONGICAUDATA (Boeck). 1872. Stenhelia longicaudata, Boeck, Nye Slegter og Arter af Saltvands-Copepoder. Chr. Vid. Forh., p. 49. 1880. Delavalia reflexa, Brady (partim) (3), vol. il., p. 45, ple li, figs.*o,-14. 1906. Stenhelta longicaudata, G. O. Sars (6), vol. v., p. 190, pe Cxxv5 ia This species is included in our list on the faith of Professor G. O. Sars, who remarks that “some of the figures given by 132 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Professor Brady of his species De/avalia reflexa (for instance figures g and 14) undoubtedly refer to the present form.” D. reflexa was dredged on a sandy bottom five miles off Hartlepool (G. S. B.) 2 D. DELAVALIA REFLEXA Brady and Robertson, 1875. Delavalia reflexa, B. and R., Brit. Assoc. Report, p- 196. 1880. Delavalia reflexa, Brady (3), vol. il., p. 45, pl. li., figs. 1-8, 11-13. 1906. Stenhelia reflexa, G. O. Sars (6), vol. v., p. 186, pl. cxxiii. Respecting this species G. O. Sars says, “It seems to me beyond doubt that Mr. Brady, under the name of De/avalia reflexa, has confounded two distinct species,” and that some of his figures refer to Stenhelia longicaudata, the remainder only to S. reflexa. Found off Hartlepool as noted under D. Jongicaudata. Dz DELAVALIA ROBUSTA Brady and Robertson. 1875. Delavalta robusta, B, and R., Brit. Assoc. Report, p. 196. 1880. Delavalia robusta, Brady (3), vol. ii., p. 46, pl. li, figs. 15-21. Dredged off Hawthorn (G. S. B.) D. DELAVALIA PYGM#A Brady. 1905. Delavalia pygmea, Brady, On Copepoda and other Crustacea taken off Northumberland and Durham in July, 1904 (Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new series, vol. i.), p. 214, pl. iii., figs. 5-10. One specimen taken between St. Mary’s Island and Souter Point in washings from dredge (G. S. B.) N. STENHELIA LIMICOLA G. S. Brady. 1899. Stenhelia limicola, Brady, On //yopsyllus cortaceus and other Crustacea taken at Alnmouth (Nat. Hist Trans. Northumberland and Durham, vol. xiii., 1899) p- 433, pl. xii, figs. 1-7. 133 J CRUSTACEA OF NORTHUMBERLAND AND DURHAM Two or three examples of this species were taken near the old oyster-hatchery at the side of the Aln above Alnmouth ; we had previously found it in a somewhat similar situation on the muddy shores of the river Glen at Carrick, County Donegal (G. S. B.) NE STENHELIA MERKI G. S. Brady. 1905. Stenhelia Meeki, Brady, On Copepoda and other Crustacea taken off Northumberland and Durham in July, 1904. Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new series, vol. i., p. 216, pl. iv., figs. 7-16. One specimen found in washings from dredge between St. Mary’s Island and Souter Point (G. S. B.) N. STENHELIA HERDMANI A. Scott. 1896. Stenhelia Herdmant, A. Scott, Some New and Rare Copepoda from Liverpool Bay. Report for 1895 on the Lancashire Sea Fisheries Laboratory, pl.i., figs. 1-11. 1903. Brady, on Entomostraca found at the roots of Laminaria. Nat. Hist. Trans. Northumberland and Durham, new series, vol. i., p. 3, pl. i, figs. 1-11. Found in washings from the roots of Laminaria at Holy Island (G. S. B.) Ni STENHELIA DENTICULATA I, C. Thompson. 1893. Stenhelia denticulata, Thompson, Revised Report on the Copepoda of Liverpool Bay. ‘Trans. Liverpool Biological Society, p. 20, pl. xxx., figs. 1-11. 1903. Stenhelia denticulata, Brady, On Entomostraca found at the roots of Laminarie. ‘Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, vol. i., new series, p. 3. Dredged off Whitley in a depth of twenty fathoms (Gx Se 185) IN STENHELIA 2MULA (T. Scott). 1893. Delavalia emula, T. Scott, Additions to the Fauna of the Firth of Forth. Eleventh Annual Report Fishery Board for Scotland, p. 204, pl. iv., figs. 36-47. Too CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1906. Stenhelia emula, G.O.Sars (6), vol. v., p. 184, pl. cxxi. Taken ina depth of 25 fathoms five miles off Hartlepool (G. S. B:) dD. CANTHOCAMPTUS MINU1Us (O. F. Miiller). 1776. Cyclops minutus, O. F. Miiller, Zool. Dan. Prodr., 2400. 1785. Cyclops minutus, idem, Entomostraca, p. ror, pl. xvil., figs. 1-7. 1820. Monoculus staphylinus, Jurine, Hist. des Monocles, p- 74, pl. vil, figs. 1-19. 1880. Canthocamptus minutus, Brady (3), vol. ii., p. 48, pl. xliv., figs. 1-17. A very widely distributed and common species, occurring abundantly in most sheets of fresh water whether great or small. N.D. CANTHOCAMPTUS HORRIDUS Fischer. 1860. Canthocamptus horridus, Fischer, Beitrage zur Kenntniss der Entomostraceen. Abhandl. der Konig. Bayer. Akad. der Wissensch., vol. viii., p. 670, pl. xxi., figs. 57-59a, 60. 1880. Canthocamptus northumbricus, Brady (3), vol. ii., p- 57, pl. xlv., figs. 1-14. This has been identified by Professor Lilljeborg, we think rightly, with the more recently described C. northumbricus : the earlier name must, of course, be adopted. It was found sparingly in Bolam Lake, Northumberland, and more lately (July, 1896) in Loughrigg Tarn (G.S. B.) Noticed also by Mr. T. Scott near Edinburgh, and by Mr. Scourfield in the South of England. N. AYTHEYELLA CRASSA (G. O. Sars). 1863. Canthocamptus crassus, G. O. Sars, Oversigt af de indenlandske Ferskvandscopepoder, p. 23 (separate copy). 1880. Aftheyella spinosa, Brady (3), vol. ii., p. 58, pl. xliii., figs. 15-18, pl. xlvi., figs. 13-18. r35 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1907. Attheyella crassa, G. O. Sars (6), vol. v., p. 199, pl.exxix. A small species, probably not uncommon, but easily over- looked. The only localities in our district of which we have notes are an engine-pond at Murton Junction, near Sunder- land, and a “ferruginous ditch at the roadside half-way between Haydon Bridge and Staward” (G. S. B.) N:D: ATTHEYELLA PYGMA (G. O. Sars). 1863. Canthocamptus prgmeus, G. O. Sars, loc. cit., p. 21. 1880. Aftheyella cryptorum, Brady (3), vol. i., p. 60, pl. li., figs. 1-18. 1907. Attheyella pygmea, G. O. Sars (6), vol. v., p. 202, pl. Cxxxi. A commoner species apparently than the preceding, and widely distributed, preferring pools and ditches rather than large expanses of water. Our only local record is, however, from a very different situation—“the damp roof of the pit workings of the low main, West Cramlington Colliery, living among films of gelatinous alge.” These specimens were sent to us by the late Mr. Atthey, and the genus was named after him, but the species—thought at the time to be new—had been previously described by G. O. Sars as a Canthocamptus. We still think, however, that the characters are such as to warrant a generic distinction. N.D. MesocHRA LILLJEBORGI Boeck. 1864. Mesochra Lilljeborg?, Boeck, Oversigt af Norges Copepoder, p. 51. 1880. Mesochra Lilljeborgi, Brady (3), vol. ii., p. 62, pl. xli., figs. 15-21, pl. xlvu., figs. 16-21. In the north-eastern district this species seems to be con- fined to brackish water localities, having been found only in salt-marsh pools at Seaton Sluice and Alnmouth(G.5S.B.) N. TAcHIDIUS DiscIPES Giesbrecht. 1869. Zachidius brevicornis, Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iii., p. 130, pl. v., figs. 1-9. 136 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1880. Zachidius brevicornis, Brady (3), vol. ii pl. xxxvil. 1881. Zachidius discipes, Giesbrecht, Die freilebenden Copepoden der Kieler Foehrde, p. 108. The reference of this species to Cyclops brevicornis Miiller— until recently adopted by most authors—was, to say the least, a very doubtful one. It seems best, therefore, to use the new specific name proposed by Giesbrecht. T. discipes is to be found plentifully during the summer months in the brackish pools of almost all estuaries and salt- marshes. N.D. igh PaeZps TACHIDIUS LITTORALIS Poppe. 1881. Zachidius littoralis, Poppe, Ueber einen neuen Harpacticiden. Abhandl. d. naturw. Ver. Bremen, vol. vil., p. 149, pl. vi. 1892. Zachidius crasstcornis, ‘TV. Scott, Additions to the Fauna of the Firth of Forth, Part 4. Tenth Annual Report of Fishery Board for Scotland, p. 250, pl. viii., figs. 14-27. 1895. Zachidius littoralis, Brady, Entomostraca collected in the Solway district and at Seaton Sluice. Nat. Hist. Trans. Northumberland and Durham, vol. xiil., p. 13, pl. ii., figs. 14-17. Another brackish water species found in similar situations to the foregoing. River Lyne at Newbiggin, mouth of the Wansbeck, and Seaton Carew (A. M. N.); Seaton Sluice (Ges. B:) NE AMEIROPSIS BREVICORNIS G. O. Sars. 1880. Ametra longipes, Brady (3), vol. ii., p. 37, pl. lili. figs. I-10. 1907. Ameitropsts brevicornis, G. O. Sars (6), vol. v., p. 224, pl. exlviii. Dredged in 25 to 45 fathoms off the Durham coast (G. S. B.) Professor G. O. Sars considers that the species called by us Ametra longifes belongs to a nearly allied distinct genus named by him as above, and distinguished chiefly by the structure of the mandibular palp. D. 137 CRUSTACEA OF NORTHUMBERLAND AND DURHAM AMEIRA BREVIREMIS G. S. Brady. 1905. Amerra breviremis, Brady, On Copepoda and other Crustacea taken off Northumberland and Durham in July, 1904. Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new series, vol. 1., p. 214, pl. iii., figs. 11-14, and pl. iv., figs. 1-6. One specimen only taken between St. Mary’s Island and Souter Point in washings from dredged material (G. S. B.) N. DANIELSSENIA TYPICA Boeck. 1872. Danielssenta typica, Boeck, Nye Slegter og Arter Saltvands-Copepoder, p. 55. 1880. Fonestella spinulosa, Brady (3), vol. i, p. 41, pl. xlvii., figs. 14-18, pl. xlix., figs. 14, 15. Taken sparingly off Hartlepool on a sandy bottom, and off Hawthorn on a muddy bottom, depth 37 fathoms (G. S. B.) THOMPSONULA HY&N# (I. C. Thompson). 1889. Fonestella hyene, 1. C. Thompson, Proc. Liverpool Biological Society, vol. iii., p. 193, pl. ix., figs. 1-ro. 1905. Zhompsonula hyane, T. Scott, Ann. and Mag. Nat. lists, SCko71 VOlweViempens ike A few specimens of this interesting species were taken by the dredge off North Sunderland in 1892 (G. S. B.). It has been dredged also by Dr. Scott in the Firth of Forth. N. PHYLLOPODOPSYLLUS BrabyI (T. Scott). 1892. Zetragoniceps Bradyt, T. Scott, Tenth Annual Report of the Fishery Board for Scotland, p. 253, pl. ix., figs. 19-32. 1905. Zetragoniceps Bradyt, Brady, On Copepoda and other Crustacea taken off Northumberland and Durham in July, 1904. Trans. Nat. Hist. Soc. North- umberland, Durham, and Newcastle, new series, vol. i., p. 257, pl. v., figs: 1=10. 1907. Phyllopodopsyllus Bradyi, G. O. Sars (6), vol. v., DP. 231, plcly. One specimen found in washings from dredge between St. Mary’s Island and Souter Point (G. S. B.) N. 138 CRUSTACEA OF NORTHUMBERLAND AND DURHAM STENOCOPIA LONGICAUDATA (T. Scott). 1892. Ametra longicaudata, T. Scott, Additions to the Fauna of the Firth of Forth. 1oth Annual Report of the Fishery Board for Scotland, Part 3, p. 250, pl. ix., figs. 1-18. 1907. Stenocopia longicaudata, Sars (6), vol. v., p. 228, pls. cli., cli. Dredged off Hartlepool in 25 fathoms (G. S. B.) D. LAOPHONTE CORNUTA Philippi. 1840. Laophonte cornuta, Philippi, Archiv fiir Natur- geschichte, p. 189, pl. ill., fig. 13. 1880. Laophonte serrata, Brady (3), vol. il., p. 71, pl. Ixxiil., figs. I-14. 1907. Laophonte cornuta, G. O. Sars (6), vol. v., p. 235, pls. clvii. and clviii. In the opinion of Professor G. O. Sars this species “ has been erroneously identified by Brady and other British authors with Clefa serrata of Claus, which is a different species.” Found at the roots of Laminariz at Holy Island. ON. LAOPHONTE CURTICAUDA Boeck. 1864. Laophonte curticauda, Boeck, Oversigt af Norges Copepoder, p. 54. 1880. Laophonte curticauda, Brady (3), vol. ii., p. 80, pl. Ixxiii., figs. 15-18, pl. Ixxvi., figs. 1-9. A common littoral species, found in tidal pools at Whitburn and Sunderland, and at the roots of Laminariz, Holy Island (GaSe, 5.) N.D. LAOPHON'TE SIMILIS (Claus). 1866. Cleta similis, Claus, Die Copepodenfauna von Nizza, p. 23, pl. v., figs. 13, 14. 1880. Laophonte similis, Brady (3), vol. il., p. 78, pl. Ixxv., figs. I-14. A common form in the littoral zone, and extending down- wards to a depth of several fathoms along the coasts of Durham and Northumberland. N.D. 139 CRUSTACEA OF NORTHUMBERLAND AND DURHAM LAOPHONTE LONGICAUDATA Boeck. 1864. Laophonte longicaudata, Boeck, Oversigt af Norges Copepoder, p. 55. 1880. Laophonte longicaudata, Brady (3), vol. 11., p. 82, pl. Ixxiv., figs. 12-15, pl. Ixxvi., figs. ro-15. Dredged in several places off the Durham coast down to 30 fathoms—Hartlepool, Seaham, and Hawthorn (G. S. B.) LAOPHONTOPSIS LAMELLIFERA (Claus). 1863. Cleta lamellifera, Claus (2), p. 123, pl. xv., figs. 21-25. 1880. Laophonte lamellifera, Brady (3), vol. 1i., p. 83, pl. Ixxv., figs. 15-23. A rather scarce species, but occurring both on algz in the littoral zone and among dredged material from moderate depths. On Laminariz and on muddy rocks, Sunderland, and at the roots of Laminariz, Sunderland and Holy Island (Es) N.D. ASELLOPSIS HISPIDA Brady and Robertson. 1873. Asellopsis hispida, B. and R., Ann. and Mag. Nat. Hlist., ser. 4, vol. xit., p. 137, pl. 1x,. figs, O—1o, 1880. Laophonte hispida, Brady (3), vol. ii., p. 85, pl. 1xxx1., figs. I-11. Dredged sparingly in a depth of from four to ten fathoms off the Durham coast (G. S. B.) D. NORMANELLA DUBIA (Brady and Robertson). 1876. Laophonte dubia, B. and R., Brit. Assoc. Report (1875), Pp. 196. 1880. Mormanella dubia, Brady (3), vol. ii., p. 87, pl. Ixxvill., figs. 12-22. A minute species, probably often overlooked, though widely distributed. Dredged off Marsden and Hartlepool, 10 to 30 fathoms (G. S. B.) D. CLETODES LIMICOLA G. S. Brady. 1872. Cletodes limicola, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. iv., p. 438, pl. xxi, figs. 10-17. 140 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1880. Cletodes limicola, Brady (3), vol. 11., p. 90, pl. Ixxix., figs. I-12. In depths of from 20 to 45 fathoms in muddy sand off the Durham coast (G. S. B.) D. CLETODES LONGICAUDATA Brady and Robertson. 1876. Cletodes longicaudata, B. and R., Brit. Assoc. Report (1875), Pp 196. 1880. Cletodes longicaudata, Brady (3), vol. il, p. 92, pl. Ixxix., figs. 13-19. Found in similar situations to the preceding species. Off Hartlepool five fathoms, and at roots of Laminaria, Holy Island (G. S. B.) N,D: CLETODES PROPINQUA Brady and Robertson. 1876. Cletodes propingua, B. and R., Brit. Assoc. Report (1875), p- 196. 1880. Cletodes propingua, Brady (3), vol. ii., p. 94, pl. Ixxvil., figs. 9-17. Dredged off Marsden in 35 fathoms (G. S. B.) D. CLETODES LINEARIS (Claus). 1866. Lilljeborgia linearis, Claus, Die Copepodenfauna von Nizza, p. 22, pl. ii., figs. 1-8. 1880. Cletodes linearis, Brady (3), vol. il., p. 95, pl. I1xxx., figs. I-14. An uncommon species. The only local record is Holy Island, where it was found at the roots of Laminaria(G. 5S. B.) aXe CLETODES sIMILIS T. Scott. 1895. Cletodes similis, T. Scott, Thirteenth Annual Report of the Fishery Board for Scotland, p. 168, pl. 1, figs. 22-26, pl. iv., figs. 1-3. At roots of Laminariz, Holy Island, and dredged off Souter Point in 39 fathoms (G. S. B.) N.D. CLETODES LATA T. Scott. 1892. Cletodes lata, T. Scott, Tenth Annual Report Fishery Board for Scotland, p. 257, pl. x., figs. 10-18. Dredged off Hartlepool in 25 fathoms (G. S. B.) D, 141 CRUSTACEA OF NORTHUMBERLAND AND DURHAM PONTOPOLITES TyPicus T. Scott. 1894. Pontopolites typicus, T. Scott, Twelfth Annual Report of the Fishery Board for Scotland, p. 251, pl. viii., figs. Q-17. 1903. Pontopolites tvpicus, Brady, On Entomostraca found at the roots of Laminariz. Trans. Nat. Hist. Soc. Northumberland and Durham, new series, vol. i., p. 4, pl. i., figs. 4-12. Found at the roots of Laminarie, Holy Island (G.S.B.) N. NANNOPUS PALUSTRIS G. S. Brady. 1880. Mannopus palustris, Brady (3), vol. ii., p. rot, pl. Ixxvil., figs. 18-20. A few specimens found in pools of brackish water at Seaton Sluice (G. S. B.) Ne PLATYCHELIPUS LITTORALIS G. S. Brady. 1880. Platychelipus littoralis, Brady (3), vol. il., p. 103; pl. Ixxix., figs. 20-23, pl. Ixxx., figs. 15-19. In brackish pools at Alnmouth and Seaton Sluice (G. S. B.) N. ILYOPSYLLUS CORIACEUS Brady and Robertson. 1880. Llyopsyllus coriaceus, Brady (3), vol. i., p. 143; pl. Ixxxii., figs. 1-10. 1899. Llyopsyllus cortaceus, Brady, On Llyopsyllus cortaceus and other Crustacea taken at Alnmouth. Nat. Hist. Trans. Northumberland and Durham, vol. xiil., p. 434, pls. xi. and xii., ‘fig. 8. This very curious and interesting species was first described from specimens taken in the West of Ireland. It has since been found at Arcachon in France, at Lymington in Hamp- shire, and lastly on the muddy flats at Alnmouth, Northum- berland. In all these cases the habitat has been similar—on mud banks a little removed from the sea where the salinity of the water is periodically reduced by admixture from rivers. N. 142 CRUSTACEA OF NORTHUMBERLAND AND DURHAM Section III.—CYCLOPOIDA Fam. r.—CYCLOPID® OITHONA SIMILIS Claus. 1866. Ozthona similis, Claus, Die Copepoden-Fauna von Nizza, p. 14. 1878. Orthona spinifrons (Boeck ?), Brady (3), vol. i., p. 90, pl. xiv., figs. 1-9, pl. xxiv.a, figs. 1, 2. Taken frequently by the tow-net in the open sea, but seldom in any great numbers. N.D. CYCLOPINA LITTORALIS G. S. Brady. 1872. Cyclopina littoralis, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. iv., p. 429, pl. xvil., figs. 9-14. 1878. Cyclopina littoralis, Brady (3), vol. i., p. 92, pl. xv., figs. 1-9. This is a rather rare species, occurring chiefly among weeds between tidemarks, but also in dredgings from various depths up to 45 fathoms. We have taken it in tidal pools at Alnmouth, Whitley, and Ryhope, as well as in several dredgings off the coast (G. S. B.) N:P CYCLOPINA GRACILIS Claus. 1863. Cyclopina gracilis, Claus (2), p. 104, pl. x., figs. 9-15. 1878. Cyclopina gracilis, Brady (3), vol. i., p. 93, pl. xxiv.B, figs. 1-9, pl. xci., figs. 10, 11. 1906. Cyclopina gracilis, Brady, Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle-upon-Tyne, new series, vol. i., part 3, pl. x., fig. 13. Several specimens of C. gracilis were found in a gathering from a salt-water pond at Amble in December, 1905. N. CycLoPINa (?) ovALIsS G. S. Brady. 1880. Cyclopina (?) ovalis, Brady (3), vol. ii., p. 181 (wood- cut). To the original description based upon a single imperfect specimen we are able to add nothing. It was taken in the surface net off Sunderland (G. S. B.) D. 143 CRUSTACEA OF NORTHUMBERLAND AND DURHAM EuRYTE LONGICAUDA Philippi. 1843. Euryte longicauda, Philippi, Archiv fur Naturg., Jahr: 9, p.63, pl. 11; fig. 3 a-d. 1878. Thorellia brunnea, Boeck, Oversigt over de ved Norges Kyster iagttagne Copepoder, p. 26. 1878. Thorellia brunnea, Brady (3), vol. 1., p. 95, pl. xvi., figs. I-10. By no means a common species in our district, but on other parts of the British coast considerably more abundant ; generally on the fronds of Laminaria saccharina at or about low-water mark. We have notes of its capture on the Durham coast (exact localities not preserved) and at the roots of Laminarie at Holy Island. N.D. CYCLOPS VIRIDIS Jurine. 1878. Cyclops gigas, Brady (3), vol. i., p. 105, pl. xx., figs. I-16. 1891. Cyclops viridis, Brady (4), p- 82, pl. v., figs. 6-10. 1901. Cyclops viridis, Lilljeborg, Synopsis specierum huc usque in Suecia observatarum generis Cyclopis, Stockholm, p. 8 (separate copy), pl. 1.. figs. 6-11. Common everywhere in fresh water, sometimes even in brackish pools. N.D. CyCLoPs BICUSPIDATUS Claus. 1891. Cyclops Thomasi, Brady (4), p. 80, pl. vi., figs. 1-4. 1891. Cyclops bicuspidatus, Brady (4), p. 78, pl. v., figs. 1-5. 1901. Cyclops bicuspidatus, Lailljeborg, Joc. ctt., p. 11, pla. tics. 2—17, plow, figs. In a pond in Lambton Park, county Durham (A. M.N.) D. CYCLOPS VERNALIS S. Fischer. 1863. Cyclops elongatus, Claus (2), p. 97, pl. xi, figs. 1, 2. 1891. Cyclops elongatus, Brady (4), p. 70, pl. 1., figs. 1-5. 1901. Cyclops vernalis, Lilljeborg, oc. cit., p. 17, pl. iL, figs. 5-7. A form of unfrequent occurrence, characterised by the presence of eighteen joints in the anterior antenne instead of the usual seventeen, was described by Professor Claus as a distinct species under the name ¢eongatus. ‘This is now 144 CRUSTACEA OF NORTHUMBERLAND AND DURHAM generally considered as an abnormality, a variation of C. vernalts. Professor Lilljeborg, in his definition of C. vernadlis, says “ Antenne primi paris . . . articulis 17, rarissime 18 composite.” Our only record is for the e/ongatus variety. Pools near Broomley Lough (A. M. N.) N. CycLops vicinus Uljanin. 1891. Cyclops vicinus, Brady (4), p. 77, pl. i., figs. 6-9. 1go1. Cyclops vicinus, Lilljeborg, /oc. cit, p. 26, pl. ii, figs. 16-19. Our local records are Bolam Lake and Paston Tarn (G. S. B.); Broomley Lake and Fallowlees Lake (A. M. N) aXe CyCLoPs STRENUUS S. Fischer. 1878. Cyclops strenuus, Brady (3), vol. i., p. 104, pl. xix., figs. 1-7. 1891. Cyclops strenuus, idem (4), p. 73, pl. ii., figs. 1-4. 1891. Cyclops abyssorum, idem, ibidem, p. 73, pl. ili. The form described by Sars under the specific name abyssorum seems to be simply a pelagic form of C. strenuus, altogether more feebly developed, and generally found at considerable depths below the surface. Of C. adyssorum we have records from Crag and Broomley Lakes (A. M. N.); of the strenuus form from Belsay, Plessey, Lambton Park, and Seaton Carew. N.D. CycLops Fuscus (Jurine). 1878. Cyclops signatus, Brady (3), vol. i., p. 100, pl. xvii., figs. 4-12, and (4) p. 71 (in part). 1901. Crclops fuscus, Lilljeborg, Joc. crt, p. 44, pl. iii, figs. 12-15. A common species, generally distributed in weedy ponds and ditches. N.D. CycLops ALBIDUS (Jurine). 1878. Cyclops tenutcornts, Brady (3), vol. i., p. 102, pl. xviii., figs. I-10. 1891. Cyclops signatus, idem (4), p. 71 (in part). In the same situations as the preceding species, and equally common. N.D. 145 CRUSTACEA OF NORTHUMBERLAND AND DURHAM CyYCLOPS INSIGNIS Claus. 1868. Cyclops Lubbockit, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. ili., p. 127, pl. iv., figs. 1-8. 1878. Cyclops insignis, Brady (3), vol.i., p. 108, pl. xxi., figs. 1-9, and (6) p. 73, pl. vi., fig. 5 (1891). Taken many years ago in brackish pools near the edge of Hartlepool Slake. The figure of the fifth foot in Plate xxi. of the Ray Society Monograph is incorrect ; that here given was CyYCLOPS INSIGNIS. Fifth foot, highly magnified. drawn from a specimen taken at Lymington, Hants, no example from Hartlepool being at present attainable: the figure agrees almost exactly with that given by Claus (G;;5. B:) D: CYCLOPS SERRULATUS S. Fischer. 1878. Cyclops serrulatus, Brady (3), vol. i., p. 109, pl. Xxii., figs. 1-14, and (4) p. 83, pl. vil., fig. 1 (1891). Wherever there is water capable of sustaining animal life there may be found Cyclops serrulatus. It seems to be less fastidious about impurities and less dependent on the presence 146 CRUSTACEA OF NORTHUMBERLAND AND DURHAM of vegetation than any other species. It is also very widely distributed, occurring, if not from China to Peru, at all events from Turkestan, through Europe, to North America. N.D. CycLops MACRURUS G. O. Sars. 1878. Cyclops macrurus, Brady (3), vol. 1., p. 111, pl. xxix., figs. 1-5, and (4) p. 84, pl. vil., fig. 2 (1891). We have no local record of this species except from Crag Lake (A. M. N.) N. CycLops aAFFINIS G. O. Sars. 1878. Cyclops affints, Brady (3), vol. i., p. 112, pl. xv., figs. 11-14, pl. xxiv.B, figs. 10-15, and (4) p. 86, pl. viii., figs. 1-6 (1891). Not a common species. Locally it has been found only in the river Till at Etal (A. M. N.) NN: CycLoPs FIMBRIATUS S. Fischer. 1878. Cyclops crassicornis, Brady (3), vol. 1. p. 118, pl. xxii, figs. 1--6. 1891. Cyclops fimbriatus, Brady (4), p. 90, pl. ix., fig. 1. Found in Bolam Lake, and in a ferruginous ditch by the side of the road between Haydon Bridge and Staward (G. S. B.); Rainton Meadows, county Durham (A. M. N.) N.D. CycLtops saLinus G. S. Brady. 1899. Cyclops salinus, Brady, On Jlyopsyllus cortaceus and other Crustacea taken at Alnmouth. Nat. Hist. Trans. Northumberland and Durham, vol. xiii., p. 432, pl. xii, figs. 11-15 ; and On Entomostraca found at the roots of Laminariz, idem, ibidem (new series, vol. i., p- 7, pl. 1., figs. 1-3, 1904). Found among fuci between tidemarks at Alnmouth and Holy Island (G. S. B.) N. [Cyctops KAurMANNI Uljanin. In the Ray Society Monograph (vol. i., p. 113, pl. xxix., figs. 6-12) C. Kaufmanni was described and figured, as also in the “ Revision” of 1891 (Brady (4), p. 89, pl. vii., fig. 3). 147 CRUSTACEA OF NORTHUMBERLAND AND DURHAM: But no indubitably adult specimens have as yet been observed, and it seems best under these circumstances to consider it as an immature form of some other species—perhaps of C. vzr7d7s. The same remarks apply to Cyclops Helleri |. HALICYCLOPS £QUOREUS (S. Fischer). 1878. Cyclops equoreus, Brady (3), vol. i., p. 119. pl. xix., figs. 8-10, pl. xxi, figs. 11-17, and (4) p. gt, pl. x., fig. 1 (1891). Claus in 1893 founded a new genus /lemicyclops with Cyclops equoreus as the type. The name, however, having been previously used in a different sense by Boeck, Dr. Norman has proposed to substitute for it that of alicyclops.* HT, equoreus is essentially a brackish water species, occur- ring not uncommonly in salt marshes and pools at the side of estuaries. It seems to be generally distributed, but the only local habitat at present known to us is Seaton Sluice, North- umberland (G. S. B.) Ne Fam. 2.—ASTEROCHERID® DERMATOMYZON NIGRIPES (Brady and Robertson). 1880. Cyclopicera nigripes, Brady (3), vol. ill., p. 54, pl. Ixxxix., figs. 1-11. 1899. Dermatomyzon nigripes, Giesbrecht, Die Astero- cheriden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte, Berlin, 1899, p. 77, pl. i. fig. 4, pl. v., figs. 1-14. A fine and well characterized species, not uncommon in moderate depths of water. Off Marsden and Hawthorn in 25 to 27 fathoms. Off Alnmouth 50 to 59 fathoms (G. S. » ASTEROCHERES LATA (G. S. Brady). 1880. Cyclopicera lata, Brady (3), vol. ill., p. 56, pl. 1xxxix., fig. 12, pl. xc., figs. 11-14. One specimen among alge in a tidal pool at Roker (G. S. B.) This species is normally parasitic on Lchinus *On new generic names for some Entomostraca (Annals and Magazine of Natural History, ser. 7, vol. xi., April, 1903). 148 CRUSTACEA OF NORTHUMBERLAND AND DURHAM esculentus, and the free-swimming condition in which it is frequently found is probably only temporary. The parasitic Crustacea of our district have been scarcely at all investi- gated, and will form a rich field for future research. The identification of this species with Ascomyzon echintcola Norman appears to have been erroneous. ‘There are rather conspicuous differences in the fifth pair of feet and other points, but these need examination with the aid of further specimens, not at present attainable. D: ASTEROCHERES Boeck! (G. S. Brady). 1880. Artotrogus Boeckt, Brady (3), p. 60, pl. xci., figs. 1-9. 1899. Asterocheres Boeckr, Giesbrecht, Die Asterocheriden des Golfes von Neapel und der angrenzenden Meeres- Abschnitte, Berlin, 1899, pp. 75 and roo, pl. i., fig. 2, Plea, les, 22—a0. In a tidal pool, Alnmouth, September, 1899 (G. 5. B.) Like the preceding, probably a truly commensal or parasitic species only accidentally found in a free condition. N- ASTEROCHERES VIOLACEUS (Claus). 1889. Echinocheres violaceus, Claus, Veber neue oder wenig bekannte halbparasitische Copepoden, p. 30, pl. vi., figs. I-10. 1899. Asterocheres violaceus, Giesbrecht, Joc. cit., pp. 76 and ror, pl. i., fig. 1, and pl. ii, figs. 34-42. 1899. Lchinocheres violaceus, Brady, On J/yopsyllus cortaceus and other Crustacea taken at Alnmouth. Nat. Hist. Trans. Northumberland and Durham, vol. xili., p. 437, pl. xii., figs. 9, 10. 1899. Cyclopicera berniciensts, idem ibidem, p. 438, pl. xiii., figs. 1-8. Two specimens taken in the free. condition in a tidal pool near low-water mark at Alnmouth (G. S. B.) The name Cyclopicera berntctensts must be withdrawn, having been founded upon a mutilated male specimen of Asterocheres violaceus. ' 149 K CRUSTACEA OF NORTHUMBERLAND AND DURHAM ACONTIOPHORUS scurATUS Brady and Robertson. 1880. Acontiophorus scutatus, Brady (3), vol. 111., p. 69, pl. xc., figs. 1-10. Dredged in 27 fathoms off Hawthorn (G. S. B.) D BRADVPONTIUS MAGNICEPS (G. S. Brady). 1880. Artotrogus magniceps, Brady (3), vol. i., p. 61, pl. xcii., figs. 1-9. 1899. Bradypontius magniceps, Giesbrecht, Joc. cit, p. 88, pl. vi., figs. 41-44. A few specimens dredged off Castle Eden in 20 fathoms. D. Criproponrius NoRMANI (Brady and Robertson). 1880. Artotrogus Normant, Brady (3), vol. ill, p. 63, pluxci; tigss 12-055) pl. xen hg.a4, plo xcin., ais. To: 1899. Cribropontius Norman, Giesbrecht, Joc. cit., p. 86, pl. vil., figs. 40-47. A few specimens dredged six miles off Hawthorn ina depth of 27 fathoms (G. S. B.) 1D: Dyspontius striatus Thorell. 1880. Dyspontius striatus, Brady (3), vol. iil, p. 65, pl. xcii., figs. 1-13. 1899. Dyspontius ‘striatus, Giesbrecht, /oc. cit., p. 90, pl. i., fig. 10, pl. vil., figs. 1-11. Dredged off Hawthorn in company with the foregoing Speciesa((G.5.13,) 1D). MICROCANCERILLA, Nov. gen. Body oblong, urosome distinctly separate from metasome ; antennules short, six-jointed ; mandibles simple, falcate ; maxilla club-shaped; anterior and posterior mavxillipeds clawed, prehensile; three pairs of biramose swimming feet. MICROCANCERILLA CCERULFOCRUCIATA, n. sp. Plate IX. (A). Female. Length o742 mm. Cephalothorax oblong-ovate, last segment expanded laterally and produced backwards, forming two acute subfalcate processes, each of which bears near the tip a single rigid seta (?rudimentary fourth foot) ; 150 CRUSTACEA OF NORTHUMBERLAND AND DURITTAM abdomen four-jointed, the joints very short and nearly equal in length; caudal stylets short, quadrate, scarcely longer than broad, sharply angulated at the outer distal edge; bearing one long rigid apical seta and two very small ones. Antennules short and stout, six-jointed, the terminal joint bearing four setze; mandibles small, consisting of a single stout curved limb without any palp; maxille simple, clavi- form, dilated at the extremity, which bears a few simple setee ; anterior maxillipeds bearing a very long and slender terminal claw; posterior similarly formed, but with a much shorter and more robust unguis; three pairs of swimming feet, each with a robust basal joint, and two tri-articulate branches. ‘The ‘siphon ‘is apparently slender and tubular, but was only indistinctly seen. The animal is nearly colourless, except that the alimentary tract is coloured so as to form in the recent condition a brilliant blue cross. Three specimens were taken by A. M. N. in a brackish pool by the side of the stream at Seaton Sluice in June, 1885, but renewed search in the same place has failed to disclose further specimens. The animal is evidently a suctorial one, and doubtless a parasite which in this case had become detached from its host. No species at all nearly corresponding to it has apparently been described. Its nearest allies are probably Canceri/a Dalyell and Botrylophilus Hesse, and it would appear not at all unlikely that the host may prove to be one of the Amphipods or Isopods which abound in salt marshes, or possibly the shore crab. N. Fam. 3.—ONCAEIDE ONC&HA ANGLICA G. S. Brady. 1905. Oncea anglica, Brady, On Copepoda and _ other Crustacea taken off Northumberland and Durham in July, 1904. ‘Trans. Nat. Hist. Soc. Northumberland, Durham, and Newcastle, new series, vol. 1., p. 220, pl. vi., figs. 1-9. One specimen only—a female—was found in washings of dredged material taken between St. Mary’s Island and Souter Point (G. S. B.) N, 151 CRUSTACEA OF NORTHUMBERLAND AND DUR Fam. 4.—LICHOMOLGID4E LIcHOMOLGUS FUCICOLA G. 5S. Brady. 1872. Macrocheiron fucicolum, Brady, Nat. Hist. Trans. Northumberland and Durham, vol. iv., p. 434, pl. xvill., figs. 9-18. 1880. Lichomolgus fucicola, Brady (3), vol. i, p. 41%, pl. Ixxxv., figs. 1-11. Found not unfrequently among fuci at and beyond low- water mark, as well as in greater depths among dredged material. Though often found free-swimming, the natural habit of this genus would seem to be symbiotic in the branchial cavities of Ascidians. Our local records are St. Mary’s Island, Alnmouth, and Ryhope, among fuci, and in dredgings from four miles off Hawthorn and Marsden in about 25 fathoms (G. S. B.) N.D. PSRUDANTHESSIUS LIBER (Brady and Robertson). 1875. Lichomolgus liber, B. and R., Brit. Assoc. Report, D- 197. 1880. Lichomolgus liber, Brady (3), vol. ii, p. 44, pl. Ixxxvi., figs. I-13. ( Pseudanthesstus, Claus, Ueber neue oder wenig bekannte halbparasitische Copepoden, Wien, 1889). In dredgings from North Sunderland, Marsden, and Hawthorn (G. S. B.) N.D. PsSrUDANTHESSIUS THORELLII (Brady and Robertson). 1875. Lichomolgus Thorellir, B. and R., Brit. Assoc. Report, p- 197. 1880. Lichomolgus Thorelitt, Brady (3), vol. ili, p. 47, pl. Ixxxviil., figs. 1-9. Off Marsden in 25 fathoms, and off Northumberland coast (G54) NED: HERMANNELLA ARENICOLA (G. S. Brady). 1872. Boeckia arenicola, Brady, Nat. Hist. Trans. North- umberland and Durham, vol. iv., p. 430. 152 CRUSTACEA OF NORTHUMBERLAND AND DURHAM 1880. Lichomolgus arenicolus, Brady (3), vol. iii, p. 46, pl. Ixxxvii., figs. 1-7. Dredged off Seaton Carew in four fathoms (G. 5. B.) D. SECrION IV.—NOTODELPHYOIDA Fam. 1.—NOTODELPHYID A The Entomostraca belonging to this family are normally parasitic or symbiotic in the interior of Ascidians, though sometimes found as tree-swimmers. NOYVODELPHYS Ca®RULEA Thorell. 1859. Volodelphys cwrutlea, Vhorell, Bidrag till Kiinnedomen om Krustaceer som lefvai Arter af Slegter Ascidia, P3757 Die iiicand iv. fo... 1878. Notodelphys carulea, Brady (3), vol. i., p. 130, pl. xxvil., figs. 10-13. In the branchial sac of 2 35 oF from the side. PATE. DXc Fig. 1. Diastylis Bradii, Norman, male. 2 F ae female, third maxilliped. 35 33 55 = first perzeopod. 4. 2 oF ae second perzeopod. 5: oe + 9 last perzzopod, 6. as ae ae telson and uropods. The serration of the lateral line in the figure of the male is too strongly indicated. Differing from that of allied species, it is so minute that it is with difficulty discernible under the microscope. PLATE IX. (A). Microcancerilla cceruleocruciata, nov. gen, et sp. Fig. 1. Female x 186. Urosome and last thoracic segment x 300. 3. 97 CANTON Uircarn ce coccniennen sesoat 96, 100 @andonoOpsiSerenseeeeeeceessacsensee 100 GanthacamptuSies.ccss-se-anctess 135 Canthocamplus veces 126, 135, 136 Gaprellagyec ceca accessaseeseertss 75 (OPHELIA? SCR OC RE REPEC HAL OO ACEO 76 Warcinlistecsceccerssscareeten vee I2 Gecropsrermssccncsasesespeces. oeees 155 Wentropagesosarsess+n ope; oreenaeee 112 (CGTIOIS) (canssrcoonosneencon sort con 74 @enlodaphniayy.. .--srrerre-ceconene 79 COLOER UUs. cocers snpu dene dues pecees III CRUZ OPS Sauces nctiseop deeb nies sae 64 GNEIROCLALUS. << eo scmcsea sare s ioe cee 69 (OUT ULLAL CORREO OSA COEE CT 69 @hondracanthus .......2c.-c0-'0«s+ 156 Ghivdonuspes-tosaccmnsee sospeweeses go CLEAR ates cNeces ce sees thc sencues 139, I40 (CIETI@ SIGS ». deococdeceneepseceaucnrer 140 (ClStOSACCUSIsccene ccceesodaeeteesees 160 Conchoderma icc. sassecncanesncaees 159 CorOpMiUnyac sacs scec ara seaeersete 74 (CORY StCSit-nosesanessataeeapnen apes Il (Cran COU: «ccs cecnccacaacuttasree 18 (GIGEET) SaRRRaReP caro sone eer 61 Gribropontius) .cccsnea-ssdenean eens 150 COSSITUS. sccasacnccusse aitmen enna 36 (SET CERES OE 25, 26, 29, 31-35 Gumellay jcc csecunesas tes scoceteanes 34 CVCIOCY PriSiixpresanes 7 IDWEVOIWOHPOS goadseosonnasesesoua0es 113 DUO'S) ccnsansijas scent sseeese SOSeEOGNEn 116 IDFEISISANS Gcauc.coscconsoncccgdanpaA 29 JOVOSBWIIIS pnoeocoxoqoaxban0onédeNdo8C 33 Diastyloid este irercserscsececessss 33 ID YIN NONRTE, SoanqodonoodsocenoodoKS 155 IDIOSACCUS seen cece 120 Microthalestris.........:0+.-2+.0+0 128 MiSOphrid.....-.0cecesesceres senses II7 Mionoculodes (-...-e-sscssmereriees 61 WVIGIVOGIUIOMES wee wvsinactenere sees eecrte 61 WHO PAEULIS— Seeho9sopoGoGROGAC LUZ els 5 Monos pilusiiraseessesseeccccaectce gl Mons tuilllateeescncemsseeceecsreriscees 154 MG EREAD, spoopsadansc0s000nN0G008 59, 60 HYferaitale, — Sonodconuscodbonbnsonnpc00e 17 IMGTIGIOE), gonasnoacoconoconcdscooon0G0s0 4I MiysidOpSis? cacersssesese series 24 AYENGIS: paenosanoeocopceqooonsecqc0ec 24 INF BUO” aee6nh00860000000000800805 Bin 2 INANNOPUS a. seioeenem eee seeeaemier- 142 INeballiaiancscsecndseecsesssesetesre: 76 WWiema@toScelisy prrrecserceresereaset 23 INCOM SISIreetiysccscessecseemecerr 25 INIGCOEMEUES SoucopoascoodoonS 5000080 62 INephropsijenntesscesrcseectscecers 18 INA PMAGEUS emescecseecticleeeeeieestt. 68 INormanellaterccssssceneenteseeee 140 INotodelphiysiauesssceraciaseseeeeee: 153 INotodnomasieeccsesssseertee teeta 97 INMOUCHE ROOMS) Sesnssasqccsbansabocanee 65 OUST. iigetccteen sete ceessoneecece 63 GQEAUEELOS Nac Jnis sosiaisieisieeisisneee en els 62 OiUthOna j.sascteoveusoseesaectaseee 143 @NCeeae ree cccssoscskcesceimernese seen 151 ONISCUS) Sede censseaniaeaieseemoenecne 46 @rchestias as....0025seocesesessamets 53 @ychestoideay wacscesrcse ena 53 @rchomeney eer. s- 25.0 secceereacs 55 @xchemenellateessceessceee-seeeee 55 OLS rsh ancetarosnuesiiese nas see es eee 63 RASULUS: PC sijaselsrsenses avin tierecener 14 PUCUTIUES: asacacoaesecuecesrenetioes 15 Paleemon se.c.asecteascesecensoneese 21 PallcemOnetes are seseeeeeeseeeeceee 21 Ban dallinayy..jsasiuceesiseenseaececrer 20 Bandal ws tecavce.+scesesaneasntecerce 19 LOMO CUMS ate semen cseec cece eres 20 THORUAULTVEIS — soa069000000006000036 115 narad@xOStomlaeeceeeeeer eee 108 TE OUDERDSICHHE sonoconq000000008e 108 EQUI OSS arose sa acecseseecerenenceee 73 AKAMMUNNAS weeeiasssiesiemeceeeescee 2 Rarapontellaecsessdsccercceseeeer 116 Parathalestrisinecsc:er-neeneeccren 126 POUL ACHENLUSLO. 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