232 ACROLOXUS. 



2. ACROLOXUS FILOSUS, Conrad. 

 Hald. Monog. p. 10, t. 1, fig. 9. 



B. Species of tlie Pacific States. 

 3. ACROLOXUS NUTTALLII, Hald. 



Shell fuscous, oval, elevated, apex one- 

 fourth of the entire length from one end. 



Length 8, width 6*25, alt. 3 mill. 



Oregon. 



This species was described by Prof Halde- 

 man on the cover of Part 3 of his Monograph, 

 but not figured. I can give no information 

 concerning the species, which I have not seen. 



(26) 



