ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 297 
reminds us strongly of the paw and claws of one of the Felide, hence 
the generic name which I have chosen. Frequent in Shetland, and 
sometimes occurring in immense numbers in rock-pools which are only 
reached by the sea at high spring-tides ; under such circumstances I have 
taken it at the Out Skerries, Shetland, and near Marsden, on the coast 
of Durham. I have dedicated this species to that excellent carcinologist 
Professor Lilljeborg. 
Lhalestris longimana, Claus, Die frei lebend. Copep. p. 130, pl. xviii. figs. 1-11. 
Among Laminariz, Bressay Sound. 
—— Helgolandica, Claus, Die frei lebend. Copep. p. 181, pl. xvii. figs, 12-21. 
Bressay Sound. 
harpacticoides, Claus, Die frei lebend. Copep. p. 133, pl. xix. figs. 2-11. 
Hillswick, among weeds, 1867. 
—— Clausii, n. sp. Rostrum short, blunt, not as long as first joint of an- 
tenne. Gnathopod (lower footjaw) having inner margin of hand 
straight, smooth, outer strongly arched; finger not quite as long as hand, 
much curved at the extremity. First feet with the branches shorter and 
stouter than usual, subequal in length; outer much stouter than inner, 
its inner margin glabrous, except three or four cilia close to the base, 
outer margin ciliate; a large lanceolate, ciliated spine on the peduncle ; 
a spine at distal extremity of first, and another near the extremity of 
second joint, which is only about twice and a half as long as broad; 
last joint with three terminal spines and a seta, the innermost spine 
more slender than and about half as long again as the next: inner 
branch much more slender than outer, 2-jointed ; first joint long, margins 
glabrous, inner with a seta rather nearer to the base than to the ex- 
tremity ; second joint terminating in two claw-spines, not very unequal 
in length. Last feet with the outer branch obovate, margin ciliated, 
with six set on the more distal portion of the outer margin and the 
extremity ; the innermost seta the longest, and the two following close 
together, and very much smaller than the others: inner branch rather 
shorter than outer, five sete on distal portion of inner margin and at 
the extremity, ciliated between the sete, and the seta nearest the base 
plumose; the sete not differing greatly in length, but the third rather 
the longest. Caudal lamine with five sete, which are peculiarly 
swollen at the base; the innermost but one the longest, the next half 
its length, the others very short, spine-like. In the male the abdominal 
segments have rows of spinules on the sides ; the external branch of the 
last feet is narrow, with seven sete, of which the innermost but one is 
much the longest, and the next is minute; the caudal sete are not 
swollen at the base. First feet as in the female. Found among Lami- 
nariz in Bressay Sound, 1867; and also at Tobermory, in the Isle of 
Mull, in 1866. I have named this species after the author of the 
beautiful work, so often referred to here, on the free-living Copepoda. 
Harpacticus chelifer (Miller). Bressay Sound. 
Porcellidium dentatum, Claus, Beitrige zur Kenntniss der Entomostraken 
(1860), p. 8, pl. ii. figs. 19-22; Die frei lebenden Copepoden, p. 140, 
pl. xvii. figs. 2-5. Among weeds, Hillswick and Lerwick, abundant. 
—— fimbriatum, Claus, Die frei lebenden Copepoden, p. 140, pl. xvii. fig. 1. 
Hillswick and Lerwick. 
subrotundum, n. sp. Short, broad, nearly as broad as long; cephalo- 
thorax subtruncate in front; antennx short, not reaching the sides of 
cephalothorax, Caudal lamin as broad as long, truncated distally ; 
1868, . 
