.4-^ 



The Nautilus. 



Vol. IV. 



JULY, 1890. 



No. 3. 



A NEW EOCENE FOSSIL FROM TEXAS. 



BY T. H. ALDRICII, CIXCIXXATI, OHIO. 



Omalaxis Singleyi n. ^^j). 



Shell flat, smooth, tricarinate, one carina on each edge and one 

 on the periphery of the body whorl ; apex impressed ; 

 whorls four, but three showing above, suture deeply 

 excavated, upper and lower part of whorls inclining 

 toward suture. Mouth nearly quadrangular. Length 

 1mm. ; breadth 3mm. Locality: Lee Co., Texas. 



This is the second species now known from the 

 Atlantic Eocene. The first was described by I. Lea 

 .from the Claiborne sand as " Orbis rotella. " For the 

 generic synonynn^ see Ball's " Report on the MoUus- 

 ca," 1889, part 2, p. 276. Discovered by J. A. Singley, Esq., and 

 named in his honor. 



NEW FORMS OF WESTERN LIMNIADES. 



BY HEXRY HEMPHILL, SAX DIEGO, CAL. 



Limnaea (Leptolimnea) Pilsbryi Hemiihill. 



Shell elongated, narrow, somewhat solid, smooth, of a light horn- 

 color; consisting of about six roundly-shouldered whorls, the last 

 flattened on its sides and occupying a little more than half the length 



