ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 285 



Sunamphithoe Jiamulus, Bate. Out Skerries Harbour, 2-5 fathoms, 1861 ; 



Hillswick, among Laminariae, 1867. 

 conformata, Bate. " Sent to us by the late Mr. Barlee, who took it off 



theShetlands"(B- & W.). 

 Podocerus -pulchettus (Leach). Among Tubularia indivisa, in the caves of 



Burrafirth ; and among Laminariae at Hillswick. 



variegatus, Leach. One mile north of Whalsey Lighthouse, in 40 fa- 

 thoms ; and in the Burrafirth caves. 



capillatus, Eathke. Among Tubularia indivisa, in Halse Hellyer, Bur- 

 rafirth; among Laminariae, Hillswick; Out Skerries Harbour, 3-5 

 fathoms ; and one mile north of Whalsey Lighthouse, in 40 fathoms. 



I question whether B. and W.'s figure of the entire animal represents, 

 as they suppose, the immature state of this Podocerus ; but the figures 

 of the gnathopod and superior antennae illustrate the strongly marked 

 features of the mature P. capillatus. 



falcatus (Montagu). Out Skerries Harbour, 3-5 fathoms; Burrafirth 



caves ; Bressay and Balta Sounds. 



pelagicus (Leach). With the last, of which I believe it to be the female. 



I have never met with a male pelagicus, nor a female falcatus. The two 

 forms occur in company, and the structural differences seem confined to 

 the exact form of the hand of the gnathopods, organs which seem gene- 

 rally to differ among the Amphipoda according to the sex. 

 Cerapus abditus, Templeton. Balta Sound and Hillswick. 



difformis (M. -Edwards) <$ ,=Dercothoepunctatus, M. -Edwards, $ . Vid- 



lom Voe ; off Balta and St. Magnus Bay. Dercothoe punctatus is unques- 

 tionably the female of C. difformis, not of C. abditus. The form which 

 B. and W. figure as the female of C. difformis is probably a variety of 

 the male. 



Siplioncecetes typicus, Kroyer. The first British specimen, dredged in 1861, 

 sixty miles east of Shetland, in 70-90 fathoms ; also 5-8 miles east of 

 Balta, 40-50 fathoms, 1867. 



Na'nia rimapalmata, Bate. St. Magnus Bay, and 5-8 miles east of Balta ; 

 40 miles east of Whalsey Lighthouse, 70-90 fathoms. 



excavata, Bate. Off Balta, and in St. Magnus Bay. 



Uyrtophium armatum, n. sp. Body strongly tuberculated ; head with a 

 central tubercle ; first segment of pereion with two tubercles, one behind 

 the other, all the remaining segments of pereion and first two of pleon 

 having a transversely placed pair of tubercles, one on each side of the 

 back, the tubercles of the last segment of pereion and of the first two of 

 pleon much larger than the others. Eirst gnathopods with wrist and 

 hand subequal in length, the former wider at the base than at the distal 

 extremity, with many setae on sides and posterior margin, but none on 

 the anterior margin ; the latter subtriangular, widest in the middle (at 

 the commencement of the palm), sloping thence equally to the base and to 

 the origin of the finger, anterior margin gently convex, dorsal margin, 

 sides, and palm bearing many setae ; finger not quite as long as the palm, 

 strong, with a slightly bifid extremity. Second gnathopods with basos 

 antero-distally produced into a strong spine-formed process ; ischium, 

 rneros, and carpus all very short, and subequal in length, the meros on 

 the posterior side running out into a very large spine-formed lobe; 

 hand very large, obovate, very broad ; palm half its length, bearing a few 

 small setae ; finger very large and strong, well arched, inner margin 

 simple. Pereiopods with the basos not at all expanded, nor wider than 



