cm TAGE SKOGSBERG 



in most cases to be somewhat smaller. In other respects the pars incisiva agrees with the same 

 organ in C. rotundata. Basale : Of the six teeth on the distal edge of the endite the five anterior 

 ones are rather powerfully serrulated, the sixth is only slightly serrulated or is quite smooth. 

 Both the appendages behind these six teeth are of the tube-bristle type. The single tooth on the 

 outside of this endite is very small, about as large as the distal teeth. The bristles of this joint 

 are like those of C. rotundata and as in the species mentioned, no epipodial appendage is 

 developed. E n d o p o d i t e: The first joint has only one posterior bristle, which has short 

 hairs, is about as long as the anterior side of this joint and is situated somewhat laterally. 

 Second joint: Of the three anterior bristles the two shorter ones are often subequal and about 

 as long as the anterior side of the two distal joints or somewhat shorter. Of the two posterior 

 bristles on this joint the longer one is in most cases about as long as the two shorter anterior 

 ones, the other is about half as long or somewhat longer. 



Maxilla: — This is of the same type as in C. rotundata. 



Fifth limb: — Of the same type as in C. rotundata, but sometimes all the bristles 

 on the endopodite and the dorso-lateral bristle of the first exopodite joint have short hairs; 

 sometimes one of the ventero -proximal bristles on the first exopodite joint may be furnished 

 with long hairs. 



Sixth limb: — Endopodite: Both the bristles sometimes have short hairs; 

 sometimes, however, both are even furnished with rather long hairs. Exopodite: 

 First joint: This has the same bristles as in C. symmetrica, but has no dorso-distal bristle. The 

 bristles are of about the same relative length as in the species mentioned or sometimes somewhat 

 longer; they are either all furnished with rather long hairs or else one or two of them 

 have short hairs. Third joint: The dorsal bristle is relatively long, often about twice as long as 

 the ventral one. 



Penis: — This is of the type usual in this genus. At about or somewhat distally of 

 the middle there are about four oblique transverse muscles, distally of which there are no 

 muscles. In the three specimens investigated by me the bent distal part of the vas deferens 

 was twisted forward in the way shown in the accompanying fig. 5. There seems to be no sign 

 of any copulatory appendage. , 



The f u r c a, upper lip and p a r a g n a t e s are similar to those of C. rotundata. 

 R o d - s h a p e d or g an: — The shaft reaches to about the distal boundary of the second 

 joint of the first antenna or somewhat farther. The capitulum is of the type reproduced by 

 Ct. W. MtJLLER; it is about as long as the second joint of the first antenna. 

 Female: — 



Shell: — Length: According to G. W. Mulleh, „ziemlich konstant 1,U7 mm". The 

 specimens investigated by me measured 0,95 — 1 mm. Length : height about 1,8 : I. Seen 

 f r o m the side it is of the type described by G. W. Muller; cf. the accompanying fig. 1. 

 Seen from below it was of about the same type as the male; cf. the accom})anying fig. 2. 

 In other respects it was like that of the male. 



First a n t e n n a: — This is of the type reproduced by G. W. MULLER. 1 did not 

 succeed in finding hairs on the anterior side of the proximal part of the e-bristle. Al! tli(> joints 



