70 



CRUSTACEA MALACOSTRACA. II. 



East Greenland: Sabine Island, about at Lat. 74' .° N., 3— 5fm.; 15 spec, (the majority belonging 



to var. obfiisafa). W Anidrup Exped. 



Finalh- two specimens mentioned b}- Ohlin (1901) probably belong to this species; they were 

 taken at the two following localities. 



East Greenland: Lat. 74° 35' N., Long. 18° 23' W., 18— 21 m., sandy mud; i spec. 

 _ — Lat. 77° 9' N., Long. 14° 40' E, 90 m., soft grey clay; i spec. 



Distribution. In the work quoted Sars has stated on his L.loiigiroiiis : "This species occurs 

 along the whole Norwegian coast, from Christrianiafjord to Vadso in depths ranging from 30 to 100 

 fathoms". Sars has presented the Copenhagen Museum with 25 specimens which must be considered 

 co-types of his L. longireniis. but only 13 of these specimens show the characteristic shape of sixth 

 abdominal segment and belong consequently to L. Sarsii H. J. H., while 4 specimens belong to L. gra- 

 cilis Kr. as interpreted below and 8 specimens must be referred to the real L. loiigirriiiis Lilljeborg. 

 The result is that Sars' utterances on the occurrence of his L. lougircmis along the whole Norwegian 

 coast are valueless, but it remains certain that L. Sarsii has been taken at Norway, and I suppose only 

 at the Finmark, because all above-named localities, where this species has been captured by Danish 

 or Swedish explorers, have an arctic character. 



43. Leptognathia gracilis Kro\er. 

 (PI. VII, figs. I a— id). 



1847. Tanais gracilis Kroyer, Naturh. Tidsskr. 2. R. B. II, p. 408. 



? — — Kroyer, Voy. en Scand. Crust. PI. 31, fig. 4, a — i. 



1877. — islandiciis G. O. Sars, Arch, for Math, og Naturv. B. II, p. 346. 



1885. Leptognathia longiremis G. O. Sars, Norske Nordhavs-Exped., Crust. I, p. 79, PI. 7, figs. 17—27. 



Female. This species is so closely allied to L. Sarsii \\-\zx it may be sufficient to point out 

 the differences and make mention of some features. — The antennulse (fig. i a) a little more slender 

 than in L. Sarsii; first joint distinctly more than two and a half times as long as deep, somewhat 

 tapering and as long as the three other joints combined; second joint conspicuously longer than the 

 depth of the first, somewhat produced above; ujiper margin of third joint about half as long as that 

 of the second; fourth joint nearly as long as the second. — Antennas as in L. Sarsii. 



Chelipeds (figs, i a and i b) scarcely as robust as in L. Sarsii; carpus only a little less than 

 twice as long as deep. Chela slightly longer than carpus, nearly twice as long as broad, somewhat 

 triangular in aspect; the hand is less or more protruding and angular above the insertion of the mov- 

 able finger, and the crenulation on the distal part of the anterior margin is distinct or rudimentary; 

 the outer side of the chela has no row of small tubercles as in L. Sarsii, while a longer or shorter 

 part of the front margin of the movable finger is distinctly crenulate. 



Second and third pairs of thoracic legs subequal; posterior terminal spine of fourth joint con- 

 siderably shorter than fifth joint (fig. ic); sixth joint not quite half as long again as the fifth; seventh 

 joint with claw a little or conspicuously longer than the sixth joint. 



Abdominal segments as in L. Sarsii excepting that the sixth segment has no trace of any pro- 



