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Fig. LXI. — M. (Cypridinodes) acuminata n. sp., $.— \. Shell, seen from the side; 17,7 X. 2. Anterior part of the 

 right valve, seen from inside; 50 X. 3. The two bristles near the inner edge of the rostral incisur and the three inner 

 bristles in the row along the dorsal edge of the incisur; 500 X. 4. One on the bristles on the list just behind the 

 rostral incisur; 325 X. 5. Posterior part of tlu; right valve, seen from inside; 100 X. 



