On the genus Broteas of Loven. — Broteas falcifer. H 



a collar-like constriction, and expanding in a securiform man- 

 ner. The cutting edge is divided into coarse teeth, the outer- 

 most of which is particularly strong and claw-like, and is 

 separated from the others by a deep incision. The remaining 



5 or 6 teeth are closely crowded together, and minutely 

 bifid at the tip, and inside them, moreover, a minute bristle 

 is secured. The palp is of rather inferior size as compared 

 with that in other Diaptomidæ, being much shorter than the 

 body of the mandible. It is, however, constructed in the usual 

 manner, consisting of a somewhat flattened basal part and 2 

 short rami, the inner biarticulate, the outer 5-articulate. The 

 basal part is composed of 2 joints, the 1st of which, how- 

 ever, is so very small as to be easily overlooked, and it carries 

 inside 4 bristles, the proximal of which is the largest and 

 somewhat remote from the other 2. The 1st joint of the 

 inner ramus is imperfectly defined from the basal part, and 

 provided inside with 4 short bristles; the last joint carries 



6 slender ciliated setæ on the transversely truncated tip. 

 The outer ramus, which is attached to a rectangular ledge 

 at about the middle of the basal part, is somewhat fusiform, 

 and is composed of 5 short joints, the outermost of which, 

 however, is so very small, that it may easily escape attention. 

 Each of the joints carries at the end a slender, densely ciliated 

 seta, and these setæ gradually diminish in length distally. 



The maxillæ (fig. 8) are rather complicated in structure, 

 and at first sight look very difiPereut from the mandibles. 

 On a closer comparison, however, it is not difficult to recog- 

 nize the same chief parts, though some additional lappets 

 are found to exist. The thickish, muscular body of the 

 maxilla projects inside to a well-defined rounded masticatory 

 lobe, armed with a number of strong denticulated spines 

 increasing in length proximally, and moreover carrying a 



