290 HELICID^. 



11. BULIMUS HARP A. 



Plate LII. Figure 3. 



B. testa minima, conica, obsoleto-scalariformi, Icnui ; 

 anfractibus quatuor, convexis ; apcrtura sub-circulari, sub- 

 obliquo ; labro acuto ; axe minute perforate. 



SYNONYMS AND REFERENCES. 



Helix harpa, Say, E-xped. St. Peter's, II. 256, anno 1S24. 

 Fupa costulata, MiGHELS, Proc. Bost. Soc. Nat. Hist. I. 187. 

 Pupa ? Anon. Am. Joiirn. Sc. 



Btdimusharpa, Pfeiffee, Zeitschr. fnr MalaU. 1S47, 147. 

 Monog. Helic. Viv. II. 150. 



DESCRIPTION. 



Animal not hitherto noticed. 



Shell ovate-conic, scalanform, light yellowish horn- 

 color, thin and fragile ; whorls four, convex, the last two 

 ribbed with thin, prominent plates, the first two smooth ; 

 suture distinct ; aperture sub-circular, slightly oblique, 

 unarmed ; lip simple and thin, or modified by the last 

 rib ; a.xis minutely perforated. 



Length of axis one-fifth of an inch ; diameter one- 

 seventh of an inch. 



Geographical Distribution. Inhabits the North- 

 western Territory and the State of JNIaine. It has not 

 been noticed in the country intervening between these 

 two extremes, though it doubtless may be found. 



Remarks. This species, described by ^Ir. Say under 

 the name which we have adopted, was discovered by him 



