242 





Length of adult female 0.60 mm. 



Remarks. This form is nearly allied to L. thoracica, though easily dis- 

 tinguishable by its more slender body, and especially by the very narrow and 

 elongated caudal rami, which moreover are not divergent, as in that species, but 

 extended straight behind. Of the structural details, the biarticulate outer ramus 

 of the 1st pair of legs and the very narrow distal joint of the last pair in the 

 female may be mentioned as well-marked distinguishing characters. The form 

 recorded by Th. Scott from Franz Josef Land as L. lonyicaudata Boeck, seems 

 to be the present species, as the outer ramus of the 1st pair of legs is indicated 

 to be biarticulate. 



Occurrence. I have found this form occasionally in several localities both 

 of the south and west coasts of Norway in moderate depths among algse. 



Distribution. Frans Josef Land (Scott). 



156. Laophonte typhlops, G. 0. Sars, n. sp. 



(PL CLXITI). 



Specific Characters. Female. Body moderately slender, with the segments 

 sharply marked off from each other. Cephalic segment rather broad, though com- 

 paratively shorter than in L. elongata, rostral projection obtusely rounded at the 

 tip. Urosome shorter than the anterior division, lateral expansions of genital seg- 

 ment and the 2 succeeding ones well marked and finely setous ; last segment about 

 the length of the preceding one. Caudal rami rather produced, considerably e: 

 ceeding in length the last segment, slightly divergent and attenuated distally, 

 apical setae very slender, the longest of them almost attaining the length of the 

 whole body. Eye wholly absent. Anterior antennae slender and elongated, being 

 fully as long as the cephalic segment, and distinctly 7-articulate. Posterior an- 

 tennae with the distal joint long and narrow, outer ramus well developed, about 

 half the length of the proximal joint. 1st pair of legs with the basal part less 

 narrow than in the 2 preceding species, outer ramus distinctly 3-articulate and 

 exceeding half the length of the 1st joint of the inner, the latter much longer 

 than the basal part. Natatory legs with the rami long and slender, 1st joint of 

 inner ramus provided inside with a well-marked seta. Last pair of legs cqmpa- 

 ratively large, distal joint, however, extremely narrow, sublinear, tip conically pro- 

 duced; inner expansion of proximal joint narrowly exserted at the tip, marginal 

 setse 5 in number, 2 of them issuing from the tip, proximal seta of inner edge 

 attached at rather a long distance from the others close to the base. 



