ON THE SHETLAND CRUSTACEA, TUNTCATA, ETC. 335 



show evident signs of having been partially imbedded among sand. My 

 largest specimen contained nearly a pint of sarcode in the interior. This 

 sarcode is of deeper colour than usual among the sponges, and when the 

 dried Oceanapia is cut open the sarcode will be found lying on that side 

 which has been downwards when drying, shrunk into a solid deep brown 

 or almost black mass, having somewhat the appearance and consis- 

 tency of cobbler's wax. 



Desmacidon fruticosus (Montagu). "Shetland, 1864 " (Bowerbank in litt.). 



Peachii, Bow. The type specimen. " Shetland, Mr. C. W. Peach " 



(Bowerbank). 



constricts, Bow. The type specimen. " Shetland, Mr. C. "W. Peach " 



(Bowerbank). 



Rapliysus Griffithsice, Bow. " Shetland, Capt. Thomas and Mr. M< Andrew " 

 (Bowerbank). 



Diplodemia vesicula. " Shetland, Mr. Barlee " (Bowerbank). 



Order KERATOSA. 



Spongionella pulcliella (Sowerby). '"A young specimen coating part of a 

 small bouldered granite pebble dredged by Mr. Jeffreys off the Outer 

 Skerries, Shetland, in May 1864, from 50-80 fathoms depth " (Bower- 

 bank). 



Chalina oculata (Pallas). Shetland, 1864" (Bowerbank in litt.). I have 

 never myself seen this common species of our southern coasts in the 

 extreme north. 



gracilenta, Bow. " Shetland, 1864 " (Bowerbank in litt.). 



Verongia Zeilandica, Bow. Occasional, and widely distributed, but numeri- 

 cally scarce on the Outer and Middle Haaf. 



Dysidea fray His (Montagu). Rare, only two or three specimens observed. 



POSTSCRIPT. 



Since the Report on the Crustacea has been in print I have received the 

 last part of Bate and Westwood's ' British Sessile-Eyed Crustacea,' which 

 contains the appendix to that work. Among the species there described are 

 several on which, as being connected with the present Report, it is necessary 

 that I should say a few words. 



" Opis leptocliela, n. sp." This I find to be the species described by me under 

 the name Euonyx chelatus (Brit. Assoc. Report, 1866 (1867), p. 202). 

 My specimen differs from that described by B. & "W. in having the 

 second gnathopods larger and stronger than the first, and the hand fur- 

 nished with a strong nail. This difference is perhaps one of sex. The 

 species cannot, I think, be placed in the genus Opis. 



" Ampelisca Icevigata" Most unquestionably not the true A. Icevigata, but 

 the A. tenuicornis of Lilljeborg and of this Report. The characters given 

 by B. & W. are the exact reverse of those which belong to the true 

 A. Icevigata. 



" Haploops ttibicola." B. & "W. give " Shetland " on my authority, but I have 

 never taken the species there. For " Shetland " read Hebrides*. 



" Lepidepecreum." A new genus is characterized under this name to receive 



* In the 'Zoological Record' for 1866, Mr. Bate, in referring to my Hebridean Report 

 (Brit. Assoc. Report, 1866, p. 193), in every instance, by some lapsus, misquotes the ha- 

 bitat as " Shetland." 



