OF CONCHOLOQY. 9 



Habitat. — New Grenada, (Wm. G. Binney.) 



My Cabinet. Cabinet of the Academy of Natural Sciences, 

 Philadelphia. 



Observations. — This species is nearly related in form and 

 coloring to H. aspersus, Reeve, from Brazil {=osculati, Villa), 

 but the latter is spirally grooved, and is a more solid, ventri- 

 cose shell. 



3. Physa (Isidora) Hainesii, Tryon. — t. 2, f. 9. 



Description. — Shell ovate, ventricose, moderately thick (for 

 the genus); spire short, acute, suture very deeply impressed; 

 whorls 3 to 4, very rapidly enlarging, extremely convex, the 

 last bulbous, with very fine epidermal revolving lines; aper- 

 ture broadly oval, well rounded above and below, columella 

 lip almost equally curved with the outer one; a heavy callous 

 deposit on the columella causes a continuous peritreme. Lighl 

 horn-color. 



Dimensions. — Length 9*5 mill., diam. 7 mill. 



Habitat. — Australia, (W. Newcomb, M.D.) India? (W. A. 

 Haines.) 



My Cabinet. Cabinet of W. A. Haines, New York. Cabi- 

 net of Wesley Newcomb, M. D., Oakland, Cal. 



Observations. — I cannot identify this species among those 

 recently described from Australia, and its characters are so 

 distinct that it cannot easily be confounded with any other. I 

 am inclined to believe the locality India an error, because 

 among the shells submitted to me by Mr. Haines, were a num- 

 ber of Australian, as well as Indian species. 



4. Physa (Bulinus) acutispira, Tryon. — t. 2, f. 10. 



Description. — Shell cylindrically-ovate, elongated,, very thin, 

 transparent, highly polished; spire elevated, very acute, suture 

 slightly impressed; whorls 5, oblique, slightly convex; aper- 

 ture narrow-ovate, two-thirds the total length, columella a little 

 folded, and somewhat turned back at the base. Very light 

 horn-color. 



Dimensions. — Length 12 mill., diam. 6 mill. 



Habitat. — Australia, (W. A. Haines.) 



My Cabinet. Cabinet of W. A. Haines, New York. 



Observations. — May be compared to Bulinus hypnorum, Linn., 

 of Europe, or Ph. virginea, Gould, of Oregon. 



Among the species recently described in the "Zool. Proc. 

 of London," I find none with which this can be identified. 



