of the Fishery Board for Scotland. 



165 



extremity, with one pair of lateral spines, and terminating in six spines. 

 Integuments very delicate. Animal without colour — Finmark. 



Hemilarnprops uniplicata, G. 0. Sars, Carapace with one oblique fold 

 on the sides. Telson with four or five pairs of lateral spines, and 

 terminating in three spines — Norway. 



Hemilamprops cristata^ G. 0. Sars. Carapace having the anterior half 

 of the dorsal line denticulately serrated. Telson with two or three pair 

 of lateral spines, and terminating in three spines — Britain, Norway. 



The males in all cases have the carapace smooth, and therefore present 

 greater dilliculties in determination than the females, to which the above 

 characters, as regards the carapace, refer. To determine the males it will 

 be necessary to refer to the full description given by Sars of the species. 



Genus Diastylis, Say. 

 Didstylis rugosa, G. 0. Sars. 



Diastylis rugosa, G. 0. Sars, ' Om den aherrante Krehsdyrgrui^pe Cumacea 

 og dens nordiske Arter^ (Vid. Selskah. Forhandl., 1864), p. 41. Nye 

 Bidrag til kundskahen om Middelhavets Invertehratfauna ii., Middelhavets 

 Cumaceer^ 1879, p. 98, pis. xxxiv. to xxxviii. 



Diastylis strigata, Norman ; Cumacea of the ' Lightning, ' Porcupine,^ 

 and * Valorous^ Expeditions, Ann. Nat. Hist, ser. 5, vol. iii. p. 62 {mas 

 adultiis). 



The Fishery Board has found specimens of the species at Tarbert, Loch 

 Fyne. 



Its known distribution is Christiania Fjord, 10 to 12 fathoms; Chris- 

 tiansund; Utne, Hardanger Fjord, 30 to 50 fathoms (G. 0. Sars); Den- 

 mark; West France; Syracuse, Messina, and Naples in Mediterranean 

 (G. 0. Sars). 



Valentia harbour, Ireland, female, and off Valentia, tow-net, 1870 

 (A. M. N.); Lough S willy, County Donegal, in 15 fathoms ('Porcupine' 

 Exped., 1869); Drobak Christiania Fjord, 1879, and Lervig Hardanger 

 Fjord, 1878, Norway (A. M. N). 



Genus Pseudocuma, G. O. Sars. 

 Pseudocuma cercaria (Van Beneden). 



Leucon cercaria. Van Beneden, Recherches sur la Faune littorale de 

 Belgique, Crustaces, 1860, p. 85, pi. xiv. 



Pseudocuma bistriata, G. 0. Sars, ' Om den aherrante Krehsdyrgruppe 

 Cumaceer^ {Vid. Selskah. Forhandl., 1864), p. 70. 



? Cyrianassa longicornis, Spence Bate, Nat. Hist. Review, vol. v., 1858, 

 p. 203. 



Cuma hella, Meinert, Crust. Isop. Ampkip. et Decapoda Danim {Natur- 

 hist. Tidssk. 3 R 11 B., 1877), p. 179. 



Cuma cercaria, Van Ben., Meinert, Crust. Isop. AmpMp. et Decapoda 

 Danise {Naturhist. Tidssk. 3 R 12 B., 1880), p. 497. 



Pseudocuma cercaria, G. 0. Sars, Middelhavets Cumaceer, 1879, p. 114, 

 pi. xl. to xlii. 



This small species seems to be the most numerically abundant of the 

 Cumacea in the British seas. Its distribution is as follows : — 



