258 



Last pair of legs with the distal joint narrower, proximal joint with 2 unequal 

 setae inside. 



Colour not yet ascertained. 



Length of adult female 0.53 mm. 



Remarks. This form is closely allied to L. brevirostiris, and may easily 

 be confounded with it. On a closer examination, however, it is found to differ in 

 its more prominent rostral projection, its distinctly 7- articulate anterior antennae, 

 and the shape of the last pair of legs. 



Occurrence. Some few specimens of this form were found in samples 

 taken at Kopervik and Skutesnses, south-west coast of Norway, from a depth of 

 1020 fathoms. 



169. Laophonte perplexa, Scott. 



(PI. CLXXVIII). 



Laophonte perplexa, Th. Scott, Marine and fresh-water Crustacea from Franz Josef Land. 

 Soc. Journ. Zool. Vol. XXVII, p. 103, PI. 7, figs. 17. 



Specific Characters. Female. General form of body about as in L. con- 

 genera. Rostral projection, however, less prominent, and with the tip entire. 

 Lateral expansions of caudal segments well developed and densely spinulose. 

 Caudal rami about the length of the anal segment and slightly narrowed distally. 

 Anterior antennae distinctly 7-articulate, 2nd joint longer than 3rd, and without 

 any projection behind. Posterior antennae and oral parts scarcely differing in 

 structure from those in the 2 preceding species. 1st pair of legs, however, with 

 the outer ramus consisting of only 2 joints, the last one twice the length of the 

 1st. Natatory legs of a similar structure to that in the 2 preceding species. Last 

 pair of legs with the distal joint comparatively small and obtusely truncated at 

 the end, inner expansion of proximal joint short and broad, not extending to the 

 middle of the distal joint. Ovisac comparatively large, rounded oval in form. 



Male with the 2nd pair of legs much larger than in female, distal joint 

 of inner ramus shorter than the proximal one. and produced inside to a narrow 

 cylindrical process, finely ciliated on both edges and tipped witli a slender bristle; 

 seta in front of this process very small and not ciliated. 3rd pair of legs with 

 the inner ramus not transformed, outer ramus, however, very coarse and incurved, 

 with the spines, especially of the terminal joint, strongly developed. 4th pair of 

 legs likewise comparatively larger than in female, with the spines of the outer 

 ramus stronger and more coarsely denticulated. Last pair of legs much reduced 

 in size, and without any expansion of the proximal joint inside. 



