THE NAUTILUS. 69 



flexed. Axis encircled by an inconspicuous spiral cord which is 

 somewhat lamellose and minutely spinose above. 



Long. 11.3, diam. 2.5, ap. diam. 2, whorls 8. 



Long. 14.5, diam. 2.8, whorls 13. 



Central Cuba: On stones at El Cercado, Cerro de Tuabaguey, 

 and Los Paredones, a narrow pass across the Sierra de Cubitas, in 

 the northern part of the Province of Camaguey. 



This little species, notable for its wide truncation, strong cord-like 

 riblets and the long contorted neck, belongs to the same group as the 

 more elongated preceding species of the neighboring region of Santa 

 Clara province, but it is also geographically and morphologically one 

 of the most distant forms of this section. Notwithstanding, in the 

 young specimens, when the shell is complete, it has the shape of U. 

 hoqueronis and U. parallela^ its singular form being due to the muti- 

 lation suffered in the adult stage ; the aperture and peristome are 

 similar; the internal axis, though different at first sight, because it 

 is encircled by a low cord, if attentively examined in the first whorls, 

 appears to be somewhat lamellose, and bearing very minute charac- 

 teristic spines at the edge; and finally the radula is of the same type 

 as in U- bacillaris, etc., similar to that of 6^. haculum Pilsbry, and 

 to Pilsbry's section Tetentrodon : 15 to 19 teeth; but in U. cama- 

 gueyana the two last lateral teeth are so degenerated that only 

 their places remain on the radula, so that tlie formula could be 

 (2)5.2.1.2.5(2). 



NOTES. 



Plkistocene Fossils from Eastern Cuba. — Mr. Clarence L. 

 Aman at my request investigated a deposit of clay exposed in an 

 excavation at Guamo, on the Rio Cauto, Oriente Province, Cuba. 

 He sent the following species to the Academy of National Sciences : 

 MargineUa minuta Pfr., Bittium gibberiihim Ad., Cttciim {Hfewceras) 

 nitidum Stimp., Leda acuta Conr., Polymita picta Born, Cepolis 

 strobllus Fer., Cepolis lucipeta Poey and Pleurodonte emarginata 

 Gdl. This find is interesting as it shows that in Pleistocene times 

 the sea extended far up the Cauto valley. — E. G. Vaxatta, 



Asiimunella TiiOMSONiANA. — I recently collected a deatl shell 

 of this species in a new locality, the steeper part of the trail between 



