studies oil iiiaiino Osiracods G07 



one, is in most cases dagger-shaped; in exceptional cases it, too, is of the tube-bristle type. The 

 single tooth on the outside of this process is situated a short distance proximally of distal 

 teeth nos. 1 — 3 (counting from the front); it is more ot less broadly triangular and is in most 

 cases somewhat larger than the distal teeth. My fig. 19 of C. symmetrica agrees very closely 

 with the normal type described above. This endite always has, as is pointed out above, four 

 bristles, one of which is situated on the anterior edge of the process, in most cases somewhat 

 distally of half the height of the process, the three others on the outside of the process. Two 

 of the three latter bristles are most frequently situated in this genus at or somewhat behind 

 the middle of the process, the third is rather near the anterior edge of the process, a short distance 

 proximally of the first-mentioned bristle situated on the anterior edge. The two posterior of 

 the bristles situated on the outside are most frequently subequal oi differ rather slightly in length; 

 they are about as long as the width of the endite. The anterior one of the bristles situated on 

 the outside of the process is comj^aratively long, about as long as or somewhat shorter than the 

 dorsal side of this joint. The bristle on the anterior edge of this process is about as long as or 

 somewhat longer than the width of the process. All these four bristles have short hairs. 

 Medially near the distal boundary of this joint there is a solitary bristle, in most cases abovit 

 as long as the distal height of this joint and short-haired. The e p i p o d i a 1 appendage 

 is sometimes developed, but sometimes it is quite absent. The e x o p o d i t e is represented 

 by a small verruciform process, in most cases of about the same type as is reproduced in the 

 accompanying fig. 22 of C. symmetrica. It is furnished with a plumous bristle, which is most 

 frequently about as long as or somewhat shorter than the anterior side of the first endopodite 

 joint. Endopodite: The antero-distal bristle of the first joint is about as long as or somewhat 

 shorter or longer than the anterior side of the second endopodite joint; this bristle is sometimes 

 plumous, sometimes short-haired; this character varies, at least in a number of cases, within 

 the species. The posterior bristles of this joint vary in number and development. Second joint: 

 One of the three antero-distal bristles of this joint is rather powerful and about as long as or 

 somewhat longer than the anterior sides of the second and third endopodite joints. The two 

 others are somewhat weaker, subequal or of somewhat different lengths; they are about as long 

 as or somewhat longer than the anterior of the end joint. One of the two posterior bristles 

 of this joint is rather powerful and about as long as or somewhat shorter than the endopodite, 

 the other is about half as long. End joint: Of the seven bristles on this joint the third (counting 

 from the front) is rather powerful and is in most cases about as long as or somewhat shorter 

 than the endopodite. The most anterior one is also rather powerful but about a third or a quarter 

 shorter than the former. The bristle that is situated between — and somewhat medially of — 

 these two bristles is rather weak and is only about a third to a fifth of the length of the longest 

 one. One of the four posterior bristles on this joint is rather powerful, about as long as or some- 

 what shorter than the most anterior bristle; the three others are somewhat weaker and rather 

 short, sube(^ual or of somewhat different lengths; the longest of them is in most cases about as 

 long as or slightly longer than half the length of the most anterior bristle on this joint. Tlie 

 shorter bristles on the second and third endopodite jomts are often furnished with rather short, 

 fine hairs; the longer and more powerful ones are most frequently rather powerfully pectinated. 



