940 



ZOOLOG Y MOLLUSCA. 



It is thought by Mr. Wheatley that sayii, ampullacea, lordi, and parkerii 

 are one species ; if this be so, the synonymy will have to be headed by P. 

 sayii, to which Dr. Lewis assents. 



Secured as follows: 



No. 



Locality. 



Date. 



Collector. 



HLi Gila River, N. Mex , 1873 Dr. O. Loew. 



PHYSA HAWNII, Lea. 

 Physa haicnii, LEA, Proc. Acatl. Nat. Sci. Phila., ii, 1864, 8, 115. 



HAD. Verdigris River, Kansas (F. Hawn). 

 Found at the following locality: 



No. Locality. Date. Collector. 



70 A White Mountains, Ariz Aug., 1873 G.K.Gilbert. 



PHYSA TRASKII, Lea. 



Physa trasMi, LEA, Proc. Acad. Nat. Sci. Phila., 1864, ii, 8, 115. 



HAB.^Rio Los Angeles, Cal. 

 Taken at the following locality: 



No. Locality. Date. Collector. 



R4 Santa Fe, N. Mex July, 1873 Dr. O. Loew. 



? PHYSA D'ORBIGNIANA, Lea. 



No. Locality. Date. Collector. 



500 R Arizona , 1873 H.W.Henshaw. 



L44A Abiquiu, N. Mex Sept., 1874 Dr. O. Loew. 



The latter number represents a very small variety, which is placed pro- 

 visionally under this head. Further investigations may prove it to be a 

 new species. 



