I'^ 



The Nautilus. 



Vol. XXII. 



JUNE, 1908. 



No. 2. 



A NEW EOCENE FOSSIL FROM CLAIBORNE. 



BY T. H. ALDRICH. 



MiTKOMORPHA EOCENENSIS, n. Sp. 



Shell small, but five whorls remaining (the em- 

 bryonic whorls are broken off), sulcate, the longi- 

 tudinals close set and prominent, the spirals the 

 same on the smaller whorls, but on the body whorl 

 more prominent at the suture and the base ; suture 

 distinct and rather deep ; outer lip denticulated ; 

 pillar lip with two tubercles, the one nearest the 

 canal long and tapering. Canal short, slightly 

 widened and slightly twisted. 

 Length 7 mm., breadth 3 mm. 

 Locality: Claiborne Sand Bed, Claiborne, Alabama. 

 Remarks: In Mitromnrphn pygmaea Dall and others examined, 

 the spiral sculpture seems to predominate, but in the species de- 

 scribed above the longitudinal is the stronger. 



TWO INTERESTING NEW ENGLAND NUDIBRANCH RECORDS. 



BT FRANCIS N. BALCH. 



The absolutely lamentable state of our present knowledge (or 

 rather ignorance) of the New England Nudibranchs is in no small 

 part due to the capricious and baffling occurrence of that interesting 



