98 Mr. E. J. Miers on Arctic Crustacea. 



The body (for one of the group to which this species belongs) is 

 not robust, and is everywhere distinctly punctulated. The head is 

 subacute, but not produced at its antero -lateral angle. The seg- 

 ments of the postabdomen have their antero-lateral angles rounded ; 

 and the second and third segments have their postero-lateral angles 

 acute, but not reflexed ; the fourth and fifth segments have their 

 posterior margins entire. The eyes are visible, but almost colourless. 

 The superior antennae in the adult are about half as long as the 

 inferior, and the first (exposed) joint is longer than the second and 

 third taken together ; the first joint of the flagellum is about as 

 long as the three following; the accessory flagellum 6-7 jointed, 

 the first joint not much longer than the succeeding. The last two 

 joints of the peduncle of the inferior antennoB are of about equal 

 length, these antennae are less than half the length of the body of 

 the animal. The first pair of legs are slender and rather long, the 

 wrist and palm subequal, each more than twice as long as broad ; 

 the palm not narrowed, but very slightly enlarged towards its distal 

 extremity, which is obliquely truncated, and armed with a series of 

 minute stiff hairs and longer cilia ; the finger arcuate and with a 

 subapical tooth ; the second pair of legs is long and very feeble, the 

 palm ovate and ciliated on the margins, with a very small finger. The 

 coxa of the fourth pair of legs is not wider at its proximal extremity 

 than that of the preceding pair, but about twice as wide at its distal 

 extremity ; the posterior margin is deeply excavated. The basa of 

 the last three pairs of legs are ovate-oblong, those of the last pair 

 rather the broadest at base. The rami of the appendages of the 

 fourth to sixth segments of the postabdomen are subequal and 

 acute. The terminal segment (telson) is more than twice as long 

 as broad at base, narrowing slightly distally, cleft nearly to its base, 

 the apex of each lobe notched at its outer angle, the notch bearing 

 a single cilium. Colour whitish with greenish spots, which are most 

 distinct upon the coxae and bases of the legs. Length of the largest 

 specimen a little over 1 inch (26 millims.). 



Coll. Hart : winter quarters of H.M.S. ' Discovery,' at a depth of 

 11 fathoms. 



I have referred the specimens collected by Mr. Hart with some 

 doubt to the Anonyx gulosus of Kroyer, as the antero-lateral margin 

 of the head is less broadly rounded, and the accessory flagellum is 

 longer than that of A. gulosus according to Boeck's diagnosis. In 

 the form of the first and second pairs of legs and of the terminal 

 segment they agree well with the descriptions of A. gidosus, and 

 particularly in the presence of a tooth on the inner margin of the 

 dactyl, which is mentioned by Lilljeborg as characteristic of that 

 species. From A. piimilus they differ in the shorter antennae, and 

 in the absence of a tooth on the posterior margin of the fifth post- 

 abdominal segment. 



Anonyx gulosus has been recorded from Greenland, Spitzbergen, 

 Iceland, the coasts of Scandinavia, and Britain. 



