1898-1902. No. 18.] CRUSTACEA. 37 



middle joint produced at the end to a slender sigmoid spine. Last pair 

 of legs with the distal joint oblong quadrangular in form, and provided 

 with 5 spiniform setae, 3 of them issuing from the end; inner expansion 

 of proximal joint still smaller than in female, and tipped with 2 

 slender seta3. 



Length of adult female 0.80 mm. 



Remarks. The present form is easily distinguishable from any 

 of the other known species of this genus by its broad and flattened 

 body and the peculiar form of the rostral projection. In its structural 

 details, however, it exhibits a close relationship to L. depressa SCOTT. 



Occurrence. Some specimens of this form were found in 4 of 

 the bottles examined. 



> 



123. Laophonte horrida, NORMAN. 



This characteristic form occurred occasionally in 5 of the bottles. 



124. Laophonte macera, G. 0. SARS. 

 Found in no less than 9 of the bottles. 



125. Laophonte perplexa, SCOTT. 



Some few specimens of this form occurred in one of the bottles 

 containing specimens taken on July 30, 1900. 



126. Laophonte hyperborea, G. 0. SARS, n. sp. 



(PI. XII). 



Specific Characters. Female. Body rather slender and 



tapering gradually behind, with the segments sharply marked off from 

 each other and somewhat raised dorsally. Integuments coarse and 

 exhibiting a pitted sculpture. Cephalic segment large and tumid, seen 

 dorsally almost quadrangular in form; rostral projection broadly trian- 

 gular, with the tip minutely bilobular. Epimeral parts of the 3 suc- 

 ceeding segments not expanded laterally. Last pedigerous segment 

 slightly produced on each side. Urosome about the length of the an- 

 terior division, and having the lateral parts of the anterior segments 

 slightly produced at the hind corners. Last segment fully as long as 

 the preceding one, but rather narrower, anal opercle smooth. Caudal 

 rami considerably produced, exceeding in length the anal segment, and 

 tapering gradually distally, tip narrowly truncated, with the inner medial 

 seta about as long as the urosome. Anterior antennre comparatively 



