230 
in L. longicornis this projection is quite absent. Furthermore L. 
longiremis Lilljeb. is distinguished from L. Sarsii H. J. H. by having 
the front free margin of the movable finger of the chela quite 
smooth, while this margin is serrate in L. Sarsii (= longiremis G. 0. 
Sars) and in the following species L.gracilis. Ås to the very rare 
adult male I refer to Lilljeborg's excellent description of this 
sex and to my figures of the chela and the fifth pair of thoracic 
legs; when compared with Sars” figures of the male of L. Sarsii 
it may be observed that the chelæ in the latter species are much 
more slender than in the female, while in L. longiremis Lilljeb. 
the difference between the male and the female chelæ is consider- 
ably smaller; finally, the "claw” on the three posterior pairs of 
thoracic legs are much longer in the male of L. longiremis Lilljeb. 
than in L. Sarsii. 
9. Leptognathia gracilis Kråyer 
Tanais pres sank Faren Voy. en Scand. Crust. Pl. 31, fig. 4, a—i. 
i Tidssk. 2... Bi: må p. 408. 
== grielltiolder 1 Lilljeborg. Bidrag till Kånn 3... p: 18 
—  islandicus G. O. Sars, Archiv for Math. oe Naturv., B. II, p. 346. 
Leptognathia longiremis G. O. Sars, Norske Nordh.-Exped., Crust, T p. 79, 
Pl. 7, figs. 17—27. 
Af denne for vor Fauna nye Art har "Hauch” taget 13 Exem- 
plarer (hvoriblandt ingen voxen Han) paa Stat. 370, i det sydlige 
Kattegat: Hjelmens Fyrtaarn i S.V. t. V. 1/4 V., 11,8 Kvml.; 
15 Fv., Slik og Sand. 
This species agrees with L. longiremis Lilljeb. and differs 
from L. Sarsii in having no denticle on the side of the last abdo- 
minal segment. But while in L. longiremis Lilljeborg the front 
margin of the movable finger of the chela is smooth, it is conspi- 
cuously serrated in L. gracilis; furthermore, in L. longiremis the 
two-jointed "claw” of the second thoracic legs is conspicuously 
shorter than the sixth joint, but in L. gracilis that "claw” is at 
least as long as, or slightly longer than, the preceding joint. 
In the list of synonymy all references of any importance aré 
given. Kråyer's single typical specimen is extremely bad, nearly 
