CRUSTACEANS 



Order SYMPODA (formerly CUMACEA) 

 (continued) 



Family Nannastacidae 



Nannastacus unguiculatus (Bate). Cuma unguiculata, 

 Bate ; Nannastacus binocubides. Bate ; N. ungui- 

 culatus, Sars ; (Ilfracombe Harbour) Stebbing 



Cumella pygmaea, Sars. C.p., Sars, Norman ; C. aplis, 

 Norman 



Family Pseudocumidae 



Pseudocuma longicorne (Bate). Cyrianassa bnp- 

 comis. Bate ; Leucon cercaria, van Beneden ; 

 Pseudocuma c, Sars, Norman ; P. kngicomis, 

 Stebbing ; P. iistriata, Sars ; Cuma bella, 

 Meinert 



Order SYMPODA (formerly CUMACEA) 

 ifontinued) 



Family Diastyhdae 



Diastylis rathkii (KrOyer). Cuma R. + C. angulata, 

 KrOyer ; Diastylis Rathkei, Sars, Norman ; 

 D. Rathkii, Norman, Stebbing ; Alauna ros- 

 trata, Goodsir ' 



— sculpta, Sars. D. /., Sars, 1871 ; (dredged in 



Torbay) Stebbing 



— laevis, Norman. D. /., Norman ; D. rostrata, 



Sars 



— bradyi, Norman. D.B., Norman, Sars 



— lucifera (KrOyer). Cuma I., KrOyer ; Diastylis I., 



Sars, Norman 



— rugosa, Sars. D. r., Sars, Norman ; D. strigata, 



Norman 



This interesting order of small sessile-eyed Malacostraca is now regarded as having closer 

 affinity to the stalk-eyed than to those which agree with it in having immovable eyes. So little 

 had it come into notice until recently that Parfitt in his Sessile-eyed Crustacea of Devon in 1873 

 does not allude to it at all.^ Even in 1904 the Marine Biological Association only mentions the 

 occurrence of six species, to which I have added Bodotria scorpioides taken at Meadfoot, Torquay, 

 and Cumopsis longipes from the stretches of sand at Woolacombe and Saunton in North Devon. In 

 Bate's Plymouth list of the year 1888 we find the additional species, Cuma unguiculata. Bate, 

 which should be Nannastacus unguiculatus (Bate), Vaunthomsonia edwardsii (KrSyer), which belongs 

 to Cumopsis, and Vaunthomsonia cristata (Bate), for which, according to Dr, Caiman, Bate's original 

 spelling was Vauntompsonia cristata ; but as no references or special localities are given for the 

 occurrence of these species in Devonian waters, it would, in my opinion, be very unsafe to accept 

 them as members of the fauna without some corroborative testimony. On the other hand. 

 Dr. Norman's personal researches have added to my list as originally written the species Cumella 

 pygmaea, Diastylis lucifera, and D. rugosa. 



Order ISOPODA 



Division Anomala 



Tribe Chelifera or Tanaidacea 



Family Tanaidae 



Tanais cavolinii, Milne-Edwards. T.c, M.-E., Doll- 

 ftis ; T. tomentosus, KrOyer, Stebbing, Todd ; 

 Crossurus vittatus, Rathke ; Tanais v., Lilljeborg, 

 Bate and Westwood 



Leptochelia dubia, KrOyer. Tanais dubius, KrOyer ; 

 LeptocheRa dubia, Norman 



Paratanais batei, Sars. P. forcipatus. Bate and West- 

 wood (not Tanais f., Lilljeborg) 



Tanaissus lilljeborgi (Stebbing). Leptognathia L., 

 Stebbing' ; Tanaissus Lilljeborgii, Norman and 

 Scott* 



Leptognathia breviremis (Lilljeborg). Tanais b., 

 Lilljeborg ; Leptognathia b., Sars, Norman 



Family Apseudidae 



Apseudes talpa (Montagu). Cancer Gammarus t., 

 Montagu ; ' Apseudes t.. Leach, Norman and 

 Stebbing, Todd 



I As to whether Goodsii's species should stand here or should 

 supersede D. laevU, see Norman, Cruit. of Devon and Carnw. p. 3 1. 

 a Trans. Devon. Assoc, vi, 236. 



• Ann. Nat. Hist. (Ser. 6, 1891), viii, 328, pi. xvi. 



* Norman and Scott, Crust, of Devon and Corniv. p. 34, 

 pi, i, figs. 1-7. 



6 Trans. Linn. Soc. Land. (1808), ix, 98, pi. iv, fig. 6. 



Order ISOPODA {continued) 



Division Anomala (continued) 



Tribe Chelifera or Tanaidacea (continued) 



Family Apseudidae (continued) 



Apseudes latreillii (Milne-Edwards). Rhoea I., M.-E. ; 

 Apseudes /., Bate and Westwood, Sars, Norman 

 and Stebbing ; A. latreillei. Pace 



Division Isopoda Genuina 



Tribe Flabellifera 



Family Anthuridae 



Anthura gracilis (Montagu). Oniscus g., Montagu ; " 

 Anthura g.. Leach, Bate and Westwood, Norman 

 and Stebbing, Todd, Garstang ' 



Family Gnathiidae 



Gnathia maxillaris (Montagu). Cancer m., Montagu ;' 

 Gnathia termitoides. Leach ; Anceus maxillaris. 

 Bate and Westwood, Parfitt ; Gnathia m.. Leach, 

 Stebbing, Sars, Todd ; ? Oniscus caeruleatus, 

 Montagu 



265 



' Ibid. p. 103, pi. V, fig. 6. 



' Trans. Devon. Assoc. (1892), xxiv, 385. 



' Trans. Linn. Soc. Lond. (1804), vii, 65, pi. vi, fig, 2. 



34 



