studies on marine Ostracods 



637 



nrtt widened distally of the rows of spines. The b- and d-bristles are also narrow distally, are 

 only furnished with a few short and fine secondary bristles at three-quarters of the way along 

 them and have no pad-like appendages. All the joints are bare. 



Second antenna: — Protopodite: The length in the specimen investigated 

 by me was 0,7 mm. Exopodito: The proportion between the length of this branch and that 

 of the protopodite was about 10 : 6. The proportion between the first joint and the total length 

 of the eight following joints was about 10 : 4. The proportion between the length of the longest 

 natatory bristles and that of the exopodite was about 22 — 25 : 15. The first joint is almost bare. 

 Endopodite: First joint: The processus mammillaris is rather low and has no distal papilla. 

 The a- and b-bristles have some few short secondary bristles, they are almost bare. Second 



Fig.CXIX. — Conchoecia Chuni G. W. Muller. — 1. Poslprior part of the shell seen from insi.ie. J: 400 X. 2. Shell 

 seen from the side, ?: 42 X. 3. Shell seen from below, $: 34 X. 4. Posterior pari of the shell seen from inside, ?; 

 2:w X. 5. Distal part of the rod-shaped organ and the left first antenna, the distal bristles are brtiken, ?; 260 X. 

 6. The tooth-lists on the right mandible seen from outside, ^; 1200 X. ". End joint of the maxilla, $: 457 X- 

 8. Penis seen from outside; 260 X. (Fig. ■'« is drawn from a specimen from station 6i b. all the others are from 



specimens from station 58 b.) 



