TIIE NAUTILUS. 77 



Bifidaria procera Gld. Tampico, found under pieces of wood in 

 an open field, also in tlie drift. 



Vertigo milium Gould. Tampico, two specimens in the drift. 



AC1IATINID.E. 



Opeas gracile Hutton. El Abra, plentiful on the mountain side. 



Opeas beckianum Pfr. Tampico, drift. 



Opeas micra Orb. Tampico, drift. 



Leptinaria tamanlipensis Pils. Tampico, scarce in the drift. 



Leptinaria mexicana Pfeiflfer. Tampico, drift. 



Spiraxis tampicoensis Pils. 1 Tampico, drift, numerous. 



Cecilioides (Caecilianopsis) jod Pils. Tampico, drift. 



OLEACINIDJE. 



Euglandina corneola Binn. Valles, a few dead ones. 



Euglandina texasiana Pfr. Tampico and Valles, found about de- 

 caying logs, the most plentiful species of this family. Pilsbry says 

 " Not G. turris. I find that they agree fully with Texas examples." 



Euglandina sp. Valles. 



Streptostyla gracilis Pils. Tampico and Valles, dead specimens. 



Salasiella joaquinae Strebel. El Abra, one specimen. 



ZONITID.fi. 



Guppya elegans Strebel. Tampico, a few in the drift. 



Zonitoidee minuscula Binnej. Tampico, numerous in the drift. 



Zonitoides singleyana Pils. Tampico, common in the drift. 



Zonitoides pentagyra Pils. Tampico, drift. 



Zonitoides elegantula Pfr. Tampico, drift. This minute species 

 was not plentiful. Pilsbry says '« This is Helix elegantula Pfr., very 

 badly figured as Chanomphalus elegantulus, by Strebel. Hitherto 

 not known north of Vera Cruz. It has about the size and general 

 appearance of a Badiodisci/s, but the embryonic whorl is without 

 spiral striae." 



LIMACID.fi. 



Agriolimax sp. undet. Valles, scarce. 



ENDODONTID.fi. 



Pyramid ula victoriana Pils. Tampico, in the drift, mostly im- 

 mature examples. 



1 This Bpeciea appears to belong to the genus CcelosUle, which has not hith- 

 erto been known in America. — Ed. 



