102 0}i some Crustacea new to or rare in the Britmh Seas. 



ling in seven or eight spines. Animal more or less stained 

 with a rich rose colour. — Britain, Norway. 



Hemilamprops assimilis, G. O. Sars. Carapace and ros- 

 trum nearly as in the last ; eyes rudimentary. Telson sud- 

 denly contracted near the extremity, with one pair of lateral 

 spines, and terminating in six spines. Integuments very 

 delicate. Animal without colour. — Finmark. 



Hemilamprops uniplicata^ G. O. 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. O. Sars. Carapace having the 

 anterior half of the dorsal line denticulately serrated. Telson 

 with two or three pairs of lateral spines, and terminating in 

 three spines. — Britain, Norway. 



The males in all cases have the carapace smooth, and 

 therefore present greater difficulties 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. 



Diastylis rugosa^ G. O. Sars. 



Diastylis rugosa, G. O. Sars, " Om deu aberraute Krebsdyigruppe Cu- 

 macea og deus nordiske Alter" (Vid. Selsk. Forhandl. 1864j, 

 p. 41 ; Nye Bidrag til kundskaben om Middelliavets Invertebrat- 

 fauna, II. Middelbavets Cumaceer, 1879, p. 98, pis. xxxiv.-xxxviii. 



Diastylis strigata, Norman, " Cumacea of tbe ' Ligbtning,' ' Porcupine,' 

 and ' Valorous ' Expeditions," Ann. & Mag. Nat. Hist. ser. 5, vol. iii. 

 p. 62 (masadultus). 



The Fishery Board has found specimens of this species at 

 Tarbert, Loch Fyne. 



Its known distribution is Christiania Fiord, 10 to 12 

 fathoms ; Christiansund ; Utne, Hardanger Fiord, 30 to 50 

 fathoms [G. 0. >Sars) ; Denmark; "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 Swilly, County Donegal, in 

 15 fathoms {^Porcupine'' Eocped. 1869); Drobak, Christiania 

 Fiord, 1879, and Lervig, Hardanger Fiord, 1878, Norway 

 {A. M. N.). 



Genus PsEUDOCUMA, G. 0. Sars. 

 Pseudocuina cercaria (Van Beneden). 



Lettcun cercaria, Van Benedeu, Kecbercbes sur la Faune littorale de 

 Belgique, Crustacea, 1860, p. 86, pi. xiv. 



