12 



longest. Anterior antennae scarcely exceeding half the length of the cephalic 

 segment and gradually tapering distally, being composed of 23 well-defined 

 joints, the 1st of which is much the largest, occupying in length about l /3 of 

 the antenna, and provided anteriorly, at some distance from the end, with a 

 peculiar strongly developed spiniform appendages curving outwards and ter- 

 minating in a thin filament; the succeeding joints very short and clothed 

 anteriorly with small bristles; terminal joint longer than the preceding ones 

 and narrow linear in form. Posterior antennae of an unusually compact structure, 

 with the outer ramus much larger than the inner and 5-articulate, the first 2 

 joints considerably dilated. 1st pair of legs much smaller than the others, and 

 having the basal part quite naked; both rami short, biartieulate, with the 

 proximal joint small and unarmed, distal joint of outer ramus carrying 6, that 

 of inner ramus 3 curved setae. The 4 succeeding pairs of essentially equal 

 structure and very coarsely built, though somewhat diminishing in size posteri- 

 orly; 2nd basal joint very large and obliquely truncated at the end, being 

 provided outside near the end with a short spine, inside with a coarsely ciliated 

 seta, which however is wanting on the last pair; both rami distinctly 3-articu- 

 late in all the pairs and rather unequal, the outer one being much the larger; 

 number of spines and setae slightly differing in the different pairs. 



Male somewhat smaller than female, but very like it in the general 

 outward appearance, though perhaps . a little less robust. Anterior antennae 

 with the number of joints somewhat reduced, being only 16-articulate, and 

 moreover differing in the much fuller development of the aesthetasks, the 

 number of which is about 8. Last pair of legs with the outer ramus slightly 

 transformed, being only composed of 2 joints, the distal one rather elongated 

 and somewhat constricted in the middle, with the inner edge quite smooth, 

 the outer armed with 2 rather distant spines, end of the joint transversely 

 truncated and carrying a thin partly ciliated lamella flanked by 2 unequal 

 spines, the outer one of normal appearance, the inner long, styliform and 

 quite smooth. 



Colour of the living animal not yet ascertained. 



Length of adult female reaching 0.95 mm., that of male 0.83 mm. 



Remarks. This interesting Calanoid was described and figured by the 

 present author in the above-quoted Journal as the type of a new genus and 

 even of a new family. It is now redescribed and new improved figures given. 

 The resemblance, as to 'the outward appearance, to the species of the genus 

 Pseudocyclopia is rather striking, and may be accounted for as the result of 



