Account of the Crustacea and the Pycnogonida. 73 



This species also is an example of our deficient knowledge of the 

 Plankton of Greenland; from Greenland it has hitherto been recorded 

 only by Vanhøffen (1897). 



58. Metridia longa 



St. 4. 300— 250 m.; St. 9; St. 18; St. 33. 100— 45 m . 



59. Idyæa sp.? 



Between St. 35 and St. 11, surface. 



X 60. Ameira sp. 



St. 3, surface. The genus is new to Greenland. 



X 61. Amphiascus Giesbrechtii G. 0. Sars, 



Amphiascus Giesbrechtii G. 0. Sars, Account, vol. 5, 1911, p. 157, 



PI. 98. 

 Stenhelia ima Giesbrecht (teste Sars 1, с; as Giesbrecht (also 

 according to Sars) has recorded it from Kielerfjord, 

 the species is probably established by Giesbrecht 

 in his paper: "Die Freileb. Copep. d. Kieler Føhrde," 

 1882; but I have not had access to this paper. 

 St. 3, surface, 1 spec. New to Greenland. 



Previously known distribution: Norway (Sars), Kielerfjord (Gies- 

 brecht), 



X 62. Monstrilla Wandelii n. sp. (PI. 6). 



St. 3, surface, 1 spec. (?). 



In the above locality a single specimen of a Monstrilla, ?, 2 mm. 

 long, has been taken. The specimen is very defective, the greater part 

 of the right antenna is missing, and several of the hairs are wanting; 

 thus, on the right branch of the furca there are 5, and on the left 4 only, 

 and the apex is wanting from all of them except from the small dorsal hair. 



In Nordisches Plankton, vol. 8 (Lief. 7), 1908, pp. 201, seqq., v. Bree- 

 MEN has given an account of the few known northern Monstrillas. Since 

 then only 10 species more (A. Scott, Siboga-Copep. 1, 1909, pp. 234 — 41, 

 PI. 57 and 58) have been described, but none of them agrees with the 

 new Greenland species. It agrees closest with Monstrilla anglica Lub- 

 bock (see V. Breemen, 1. c, p. 209, figs. 221—22 and Тн. Scott, 22 Ann. 

 Report Fishery Board f. Scotland, pt. 3, 1904, p. 246, PI. 13, fig. 13; 

 PI. 14, figs. 12 — 14), but that it is not this species may be seen, among 

 other things, from the fact that p. 5 has an entirely different form 

 with a fairly large inner branch, and there are hairs on the furca. That 

 the specimen from Greenland has only 5 pairs of furcal hairs is of less 

 significance, as the one pair is perhaps lost (besides, on the right branch 

 there is one more than on the left); but the dorsal hair is seated on the 

 outer side and not above the parting between the two innermost hairs. 

 Moreover, the carapace of the new species is reticulated (see PI. 6, 



