﻿AMERICAN TERTIARY AND CRETACEOUS FOSSILS. 379 



Dimensions. — Length 1*1 in., length of mouth '55 in., width of body whorl -3 in. 

 The fine specimen figured, is in my collection from Caldwell Co., Texas. It is 

 nearly twice as large as any other specimen I have seen, of the same species. 



p-T. Kellogii. PI. 67, fig. 10. Elongated fusiform, whorls eight; mouth narrow, 

 about two-fifths the length of shell, inner lip slightly thickened, outer lip simple, pos- 

 terior sinus wide, rounded, canal straight ; surface marked by six or seven large longi- 

 tudinal ribs crossed by very numerous fine, revolving strige ; suture deep. 



Dimensions. — Length *5 in. length of mouth *2 in. width of body whorls '15 in. 



Locality. — Wheelock, Texas. 



This species resembles Lea's figure of P. Lonsdalei in its markings, but it is smaller 

 and is both proportionally more narrow and has a larger mouth. 



~^vT. Texana. PL 67, fig. 11. Narrow fusiform, whorls eleven or twelve; mouth 

 narrow, canal short, straight, outer lip simple, inner lip slightly thickened ; surface 

 marked by about twenty revolving lines, two small ones on the shoulder of the whorl 

 and the remainder larger and decreasing from the shoulder towards the end of the 

 canal ; traces of longitudinal ribs exist obscurely on the first half dozen whorls. 

 Dimensions. — Length # 7 in., length of mouth "3 in., width of body whorl *2 in. 



T. retifera. PL 67, fig. 12,- Thick, fusiform, robust; whorls seven or eight, 

 spire acuminate ; mouth narrow, canal short and slightly bent, outer lip thick, simple, 

 inner lip thin ; surface coarsely cancellated by the crossing of longitudinal and 

 revolving lines, the latter about fourteen in number, three or four of which are some- 

 times double. 



Dimensions. — Length *28 in., length of mouth "12 in., width of body whorl -11 in. 



Locality. — With the above from Wheelock. 



Easily distinguished by its coarsely cancellated appearance. 



T. nodocarinata. PL 67, fig. 13. Turrited; whorls seven, strongly carinated 

 below the middle; suture distinct; mouth linear, columella straight ; surface marked 

 by a row of beading, directly below the suture, top of the whorl plain, carina marked 

 by another nodose band larger than the first, rest of the whorl marked by about 

 fifteen heavy revolving ribs, growing smaller on the canal and crossed by much 

 smaller longitudinal lines. 



Locality — Wheelock, Texas. Collection of the Academy. 



EUCHEILODON, Gabb, n. g. 



I propose to found this genus to receive a beautiful little species of pleurotomoid 

 shell from Wheelock and from Caldwell Co., Texas. 



Gen. Char. — Allied to Pleurotoma ; fusiform or scalariform ; spire high ; mouth 



