ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 285 
Sunamphithoé hamulus, Bate. Out Skerries Harbour, 2-5 fathoms, 1861 ; 
Hillswick, among Laminariz, 1867. 
conformata, Bate. ‘Sent to us by the late Mr. Barlee, who took it off 
the Shetlands” (B. & W.). 
Podocerus pulchellus (Leach). Among T'ubularia indivisa, in the caves of 
Burrafirth ; and among Laminariz at Hillswick. 
—— variegatus, Leach. One mile north of Whalsey Lighthouse, in 40 fa- 
thoms; and in the Burrafirth caves. 
capillatus, Rathke. Among Tubularia indivisa, in Halse Hellyer, Bur- 
rafirth; among Laminarie, 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 antennz illustrate the strongly marked 
features of the mature P. capillatus. 
faleatus (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. 
[have never met with a male pelagicus, nor a female faleatus. 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) ¢ ,= Dercothoé punctatus, M.-Kdwards, 9. Vid- 
lom Voe; off Baltaand St. Magnus Bay. Dercothoé 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. 
Siphonecetes 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. 
Nenia 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. 
Cyrtophium 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. First gnathopods with wrist and 
hand subequal in length, the former wider at the base than at the distal 
extremity, with many sete 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 sete ; 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, 
meros, 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 sete; finger very large and strong, well arched, inner margin 
simple. Pereiopods with the basos not at all expanded, nor wider than 
