1890.] NATURAL SCIENCES OF PIIILADELPHIA. 401 



tse and revolving lines ; aperture comparatively short and contracted 



anteriorly into a twisted canal ; columella considerably twisted (but 



not reflected posteriorly, as in Vertagus), with tvvo folds, the upper 



of which is the longest ; outer lip dentate interiorly. 



« Cerithium Whitfieldi, Ileili.r. Proc. Acad. Nat. Sci. Phila., 1879, p. 216, as 

 Jiostellaria. 



McBee School. 



Cerithium Texanum, Ileilpr. Proc. Acad. Nat. Sci. Phila., 1890, p. 404. 



Station 5. 



Crepidula sp ? 

 Station 4. 



* Cylichna galba, Conr. F. S. T., 2d ed., p. 40. 



Bulla Si. Hilairii, Lea. — Contr., p. 98. 



B. Kelloggii, Gabb. — Jour. Acad. Nat. Sci. Phila., 2d ser., IV. p. 

 386. 



Smithville ; Caldwell ; Wheelock. 



Volvula minutissima, Gabb. Jour. Acad. Nat. Sci. Phila., 2d ser., IV, p. 386. 



Caldwell ; Wheelock. 



V. Conradiana, Gabb. Jour. Acad. Nat. Sci. Phila., 2d ser., IV, p. 386. 



Caldwell ; Wheelock. 



■■ Helcion Leanus, (iabb. Jour. Acad. Nat. Sci. Phila., 2d ser., IV, p. 387. 

 Caldwell. 



This species is, I believe, Lea's Hipjionyx (Concholepas) pygmoea 



(Contr., p. 95.) 



Dentalium minutistriatum, Gabb. Jour. Acad. Nat. Sci. Phila., 2d ser., IV, p. 

 386. 



Smithville ; Wheelock. 



Gadus subcoarctatus, Gabb. Jour. Acad. Nat. Sci. Phila., 2d ser., IV, p. 386, as 



Wheelock. 



ACEPHALA. 



* Corbula rugosa, Lamarck. Anim, sans Vertebr., 2d ed., VI, p. 141; Deshayes 

 Anim. sans Vertebr., Bassin de Paris, 1, p. 226. 



Corbula oniscus, Conr. — A. J. Science, XXIII, p. 34L 



C. Murchisonii, Lea. — Contr., p. 46. 

 C. gibbosa, Lea. var. — Contr., p. 47. 



f C. bicostata, Nyst. 

 Smithville ; St. Augustine Co. 



C. Texana, <Tabb. Jour. Acad. Nat. Sci. Phil., 2d. ser., IV, p. 387. 

 Smithville. 



Tellina Mooreana, Gabb. Jour. Acad. Nat. Sci. Phila., 2d ser., IV, p. 387. 



Caldwell. 



* Donax limatula, Conr. F. S. T., 1st ed., p. 42. 



Egeria Bucklandli, Lea» — Contr., p. 52. 

 E. trlangulata, Lea. — Contr., p. 5L 

 Colorado R. 

 27 



