﻿AMERICAN TERTIARY AND CRETACEOUS FOSSILS. 381 



and with seven robust teeth internally, inner lip thin, with a few small teeth, canal 

 short, recurved, surface marked by varices and by irregular longitudinal ribs, crossed 

 by numerous thick revolving lines, giving a coarsely reticulated appearance ; between 

 the revolving lines are numerous finer striae. 

 Dimensions. — Length *9 in., length of mouth *4 in., width of body whorl *5 in. 



PHOS, Montf. 



^ P. Texanus. PI. 67, fig. 17. Subfusiform, whorls eight, spire high; mouth* small, 

 outer lip with seven or eight teeth inside, inner lip with about six ; canal very short, 

 recurved ; surface marked by numerous revolving ribs crossed by longitudinal ribs 

 and very indistinct longitudinal impressed lines ; the ribs are slightly thickened 

 where they cross on the upper part of the whorl so as to present the appearance of 

 small tubercles or nodes. The young shells, having but three or four whorls, are more 

 robust, polished and coarsely reticulated by distant lines. 

 Dimensions. — Length *5 in., length of mouth "17 in., width of body whorl -22 in. 



PSEUDOLIYA, Swains. 



P. fusiformis, Con., MSS. PI. 67, fig. 30. Fusiform, polished; umbilicus closed 

 by the callus ; spire conical, whorls four, slightly convex ; suture profound ; impressed 

 line on the body whorl obsolete ; aperture narrow, elliptical. Figure, natural size. 



^P. linosa, Con., MSS. PL 67, fig. 31. Subfusiform, spire high, whorls six; um- 

 bilicus open ; suture profound ; impressed line on the body whorl deep, rest of the 

 whorl marked by numerous revolving ribs, first two or three whorls strongly undulate, 

 aperture elliptical. 

 Dimensions. — Length *45 in., width of body whorl *3 in., length of mouth -3 in. 



J P. carinata, Con., MSS. PI. 67, fig. 32. Subovate; entire above the canal or 

 impressed line ; whorls five, rounded ; suture channeled ; aperture elliptical ; urn- 

 Wicus large and profoundly carinated within. Figure, natural size. 

 ^P. perspectiva, Con., MSS. PL 67, fig. 29. 



Qastridium vestutum, Con., Wailes' Report, Miss. p. 289, pi. 17, f. 4. 



Short, ovate, ventricose, spire very short, suture channelled ; five revolving lines 

 above the channel, below, seven or eight impressed revolving lines; columella callous ; 

 umbilicus large, polished within, and with a submarginal acute carina ; umbilical 

 margin carinated ; labrum margin waved or dentate below the tooth at the termina- 

 tion of the canal. 



" This is a very distinct species." — T. A. C. 



AGARONIA, Gray. {Eiatula, Swains). 



^A. punctulifera. PL 67, fig. 22. Fusiform, robust, whorls four, spire short; 



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