Fig. XXXI. — r. (Dninria) /«■(»■ n. sp., $. — 1. Shell, seen from the side; 35 X. 2. One of the medial bristles of 

 the shell just behind the rostral incisur; 680 X. 3. A part of the list inside the posterior edge of the shell; 680 X- 

 'i. M.iriclililc. seen from williin; i'l'i X. ."J. Distal part of the mandible, seen from within; 480 X. 6. Cleaning bristle, 

 ;ilinormal type, of the seeond endopodite joint of the mandible; 1000 X. 



