Mr. E. J. Miers on Arctic Crustacea. 109 



extremity, the angle being armed with a tuft of stiff hairs, which 

 evidently serve as points of attachment for the ova. It is probable 

 that this peculiarity of structure only attains its greatest develop- 

 ment in females in which the ova are present. 



This species appears to be a common inhabitant of the high 

 northern latitudes, and has been recorded from the coasts of Green- 

 land, Spitzbergen, and Arctic America (Port Bowen, Northumber- 

 land Sound). 



Nymphon hirtum, var. ohtusidigitum. PL IV. fig. 3. 



Among the specimens from Franklin-Pierce Bay is a single ex- 

 ample, which differs from the males of the foregoing variety only in 

 the legs being cylindrical, not dilated and compressed, and in the 

 form of the chelae of the mandibles. These have the fingers arcuate, 

 meeting only at the tips, which terminate in small knobs. The 

 chelae are slender, not globose, as in the form figured by Bell, iu 

 Belcher (7. c.) p. 409, pi. xxxv. fig. 4, under the name of N. 

 robustuni, and that recently described by Heller as N. Mans (Sitz. 

 der k.-k. Akad. Wien, Naturw. Ixxi. p. 610, 1875), in which 

 species the fingers although arcuate are represented as acute. The 

 second joint of the legs is short, as in the males of N. hirtum. 

 Length rather more than 5 lines (11 millims.) ; greatest width be- 

 'tween legs about 2 inches 7 lines (66 millims.). 



Nymjjhon Stromii. 



Nymphon Stromii, Kroyer, Nat. Tidsskr. 2 R. i. p. Ill (1844); Voy. en 

 Scand. Crust. Atlas, pi. xxxv. fig. 3. 



Coll. Feilden : Floeberg Beach, lat. 82° 27', at depth of 10 fa- 

 thoms, three specimens, and at lat. 81° 56', one specimen ; Cape 

 Fraser, at a depth of 80 fathoms, bottom hard, one adult and 

 three young specimens. 



One (the largest) specimen collected is a female with ova ; length 

 6i lines (16 millims.), greatest width between legs 5 inches 6 lines 

 (140 millims,). AU the specimens obtained are more or less im- 

 perfect. 



The examples obtained by Captain FeUden of this fine species 

 agree in all respects with the figure given by Kroyer in the Atlas of 

 Gaimard's * Voyage en Scandinavie,' above quoted. The female 

 (at least the example I have examined) has not the peculiar dilata- 

 tion of the fifth joint of the third pair of appendages noted in the 

 female of N. hirtum. 



This species is usually (as stated by Kroyer 7. c.) glabrous ; but 

 in one or two specimens there are a few scattered hairs upon the le^^s. 

 The chelae in the adult are very large, with long fingers armed with 

 spines upon their inner margins ; the third and fourth joints of the 

 second pair of appendages are subequal and together much lono-er 

 than the second joint; the seventh joint of the legs is long and slender 

 a little longer than the eighth joint. 



