CRUSTACEA MALACOSTRACA. II. 19 



Norman &: Stebbiiig have published a good description and a number of figures of this cha- 

 racteristic species. The single adult specimen at hand, a female with the marsupium fully developed, 

 measures 6.7 ,nm in length, and is somewhat smaller than the largest specimen seen by the English 

 authors, as they stated it to be 8.5 mm long. My specimens agree well with their description, but I 

 think it useful to give some analytical figures with some remarks. 



The chelae (fig. 6a) are somewhat longer than the carpus, a little more than twice as long as 

 broad, with the posterior margin considerably sinuate, as almost its proximal half is conspicuously 

 concave, the distal half rather convex. The movable finger is somewhat shorter than the front margin 

 of the hand; its incisive margin is armed with six low to extremely low teeth (fig. 6b) increasing much 

 in breadth from the proximal to the penultimate tooth and decreasing much in height from the first 

 to the last tooth; each tooth has its distal end produced into a minute, oblong-triangular, acute tip. 

 The fixed finger has its terminal part bent considerably and shaped as a thick, somewhat spiniform 

 process with the margins glabrous, while the remaining long part of the incisive margin has almost 

 its proximal half furnished with a close row of numerous very small teeth and the distal portion with 

 five large, very broad and proportionately somewhat low, obtuse, brownish teeth. 



Fig. 1 a represents the terminal part of third left thoracic leg from behind ; some nine long, 

 glabrous and strong setae originate in an oblique row from the margin of sixth joint, which above 

 terminates in three very thick, serrate spines; seventh joint, seen in the intervals between the setae, 

 is distally slender and three times as long as the straight claw. — Fig. ib represents the terminal 

 part of sixth left leg from behind, and fig. 1 c the corresponding part of seventh left leg from above ; 

 the last-named part has a transverse row of spines above the base of the long setae at the end of 

 sixth joint; in both legs the seventh joint is distally a little flattened and widened towards the rounded 

 end which expands as a roof beyond the insertion of the claw; the distal part of seventh joint is 

 closely serrate along the terminal margin and the most distal portion of the lateral margins, and from 

 this serration to near the middle of the joint each lateral margin has a very close row of minute, 

 very slender spines; the claw is half or more than half as long as seventh joint. 



Occurrence. This fine species was taken by the "Ingolf" at a single station. 



South of Greenland: St. 22: Lat. 58 10' N., Long. 48 25' W., 1845 im -i temp. 1.4 ; 3 spec. 



Distribution. Norman & Stebbing examined specimens from a station South of Greenland 

 at Lat. 56 11' N., Long. 37 41' W., 1450 fm., and from two localities respectively North-West of Ireland 

 and West of North Ireland, 1360 and 1380 fm. 



10. Neotanais hastiger Norm. &. St ebb. 

 1886. Alaotauais hastiger Norman & Stebbing, Trans. Zool. Soc. London, Vol. XII, Pt. IV, p. 1103; 



PI. XXIII, fig. 2. 

 Occurrence. This species, which has not been gathered by any Danish expedition and has 

 never been seen by me, is enumerated here because the single specimen hitherto known has been taken 

 by the "Valorous" at a locality not far from the "Ingolf St. 38 and between this station and Cape 

 Farewell, viz. at Lat. 59 10' N., Long. 50° 25' W., 1750 fm. 



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