On the genus Broteas of Loven. — Bro teas falcifer. 21 



that in the very tortuous efferent duct, on the right side, a 

 fully developed spermatophore is seen ready to be evacuated 



(see fig. 3). 



Generic and specific Characters. 



Gen. Broteas Lovéa 1845 

 Syn. Faradiaptomus, G. 0. Sårs. 



Form of body about as in Diaptomus, being somewhat 

 more slender in male than in female. Anterior division 

 composed of 6 well-defined segments, the last of which in 

 female is produced to large lamellar lobes extending to each 

 side of the base of the tail. Front simple, without any ten- 

 tacular filaments. Posterior division composed in female of 

 only 2, in male of 5 segments. Caudal rami of différent 

 shape in the different species, in male somewhat asym- 

 metrical; marginal setæ 5 in number, more or less transformed 

 in male on right side. Anterior antennæ of moderate length, 

 25-articulate; right prehensile antenna in male with the 

 middle section strongly tumefied Posterior antennæ com- 

 paratively small, with the outer ramus scarcely longer than 

 the inner and 7-articulate. Mandibles, maxillæ and anterior 

 maxillipeds about as in Diaptomus. Posterior maxillipeds, 

 however, much stronger, with the terminal part composed 

 of only 3 joints, and armed with more or less strong 

 claw-like spines. Natatory legs comparatively short and 

 stout, 1st pair considerably smaller than the others and 

 having the inner ramus biarticulate; both rami of the other 



