38 G. 0. SARS. [SEC. ARC. EXP. FRAM 



short. 7-articulate, 2nd joint the largest and without any projection 

 behind: terminal part about the length of the 2 preceding joints com- 

 bined. Posterior antenna? and oral parts of the usual structure. 1st 

 pair of legs less robust than in L. applanata, outer ramus very small, 

 IK it even attaining half the length of the proximal joint of the inner, 

 and composed of only 2 joints, the distal one much the longer; inner 

 ramus rather slender, with the apical claw long and only slightly curved. 

 Natatory legs of a structure similar to that in L. perplexa SCOTT. Last 

 pair of legs likewise rather similar, though differing somewhat in the 

 shape of the distal joint, which is not, as in the latter species, trun- 

 cated at the end, but is obliquely produced. 



Male with the anterior antennae very strongly hinged, the last joint 

 of the proximal part being almost globularly dilated. 2nd pair of legs 

 scarcely larger than in female, but with one of the setae of the inner 

 ramus. as in L. brevirostris GLAUS, peculiarly transformed. Inner 

 ramus of 3rd pair of legs transformed in quite a normal manner, being 

 3-articulate, with the middle joint produced outside to a comparatively 

 short spiniform projection, outer ramus, on the other hand, scarcely 

 different from that in female. 4th pair of legs with the outer ramus 

 somewhat stronger than in female, and having all the spines of the 

 outer edge coarsely denticulate. Last pair of legs very small, with the 

 inner expansion of proximal joint quite obsolete. 



Length of adult female 0.95 mm. 



Remarks. This form is closely allied to L. perplexa, SCOTT, 

 but is of considerably larger size, and moreover differs conspicuously 

 in the more produced caudal rami, the comparatively shorter anterior 

 antenna, and the shape of the distal joint of the last pair of legs. 

 Finally, the male exhibits in its sexual characters several well-marked 

 differences, as pointed out in the above diagnosis. 



Occurrence. Several specimens of this form occurred in 2 of 

 the bottles examined. 



Fam. Cletodidce. 

 127. Cletodes similis, SCOTT. 



A solitary female specimen of this form was found in a bottle 

 containing specimens taken on July 12, 1900, in the bay at Land's End. 



Fam. Tachidiidse. 

 12s. Dunielssenia typica, BOECK. 

 Thi^ form occurred occasionally in 3 of the bottles examined. 



