241 



Male with the inner ramus of 3rd pair of legs transformed in a similar 

 manner to that in the male of L. depressa. Last pair of legs very small, with 

 the distal joint rounded, and the inner expansion of proximal joint almost obsolete. 



Colour yellowish grey. 



Length of adult female 0.55 mm. 



Remarks. This form, first described by Boeck, belongs to the smaller 

 species of the genus. It is moreover easily distinguished from any of the 3 pre- 

 ceding species by the narrow and produced caudal rami, and by the slender form 

 of the posterior maxillipeds and of the legs. 



Occurrence. I have met with this form not unfrequently in many places, 

 both of the south and west coasts of Norway, as also in the Trondhjem Fjord, 

 and Th. Scott also records it from Finmark. It is found in moderate depths, 

 ranging from 6 to 20 fathoms, among algae. 



Distribution. British Isles (Brady), coast of France (Canu). 



155. Laophonte elongata, Boeck. 



(PI. CLXII). 



Laophonte elongata, Boeck, Nye Slsegter og Arter af Saltvandscopepoder. Chr. Vid. Selsk. Forh. 



1872, p. 50. 



Specific Characters. Female. Body slender and elongated, with the seg- 

 ments sharply marked off from each other, and fringed at the posterior edge with 

 delicate spinules. Cephalic segment comparatively large and deep, with the lower 

 edges strongly curved in the middle; rostral projection of moderate size and truncated 

 at the tip. Urosome nearly as long as the anterior division, lateral expansions 

 of genital segment and the 2 succeeding ones densely setiferous; last segment 

 shorter than the preceding one. Caudal rami exceedingly slender and elongated, 

 almost attaining half the length of the urosome, and scarcely at all divergent, 

 apical set&3 of moderate length. Anterior antennae rather slender, almost attaining 

 the length of the cephalic segment, and composed of 6 articulations only, the last 

 2 being confluent, 2nd joint the largest and without any projection of the hind 

 edge. Posterior antenna about as in L. ihoracica. 1st pair of legs, as in that 

 species, very slender, with the basal part much elongated, outer ramus small and 

 only composed of 2 joints. Natatory legs slender and elongated, resembling in 

 structure those in L. ihoracica. Last pair of legs with the distal joint consider- 

 ably narrower than in that species, otherwise of a rather similar structure. 



Colour pale yellowish, with scattered orange patches along the sides of 

 urosome ; ovaria dark green. 



32 Crustacea. 



