STANTON.] FUSIDiE. 153 



is associated. It differs, however, in the shouldered character of the 

 whorls as well as in all the details of surface ornamentation. 



Locality and position. — Poison canyon, Huerfano county, Colorado, in 

 the Pugnellus sandstone. 



Genus FASCIOLAKIA LamarcK. 



Fasciolaria? walcotti n. sp. 

 PI. xxxii, Fig. 5. 



Shell small, slender fusiform, consisting of eight or nine convex 

 whorls; spire elevated, about equal in length to the last volution; 

 last whorl merging into the rather short and slightly curved canal. 

 Surface marked by numerous sinuous transverse costae and finer, 

 closely arranged, revolving lines. On the penultimate whorl there are 

 about thirty of the costse and about twenty revolving lines. 



Length, 29 mm ; breadth, 10 mm . 



The single type specimen is beautiful ly preserved, but as it is im- 

 bedded in a hard matrix from which it can not be removed without 

 endangering it, I have not been able to see the character of the 

 aperture nor to determine whether there are any folds on the columella. 

 It seems, however, to be closely related to Fasciolaria (MesorhytisJ 

 gracilenta Meek, from which it differs in its shorter canal, more numerous 

 transverse costae, and more delicate sculpture. 



Locality and position. — Collected by Mr. C. D. Walcott about 350 

 feet above the base of the Cretaceous section at Upper Kanab, southern 

 Utah. 



Fasciolaria? (Cryptorhytis) utahensis Meek (sp.) 

 PI. xxxii, Figs. 3 and 4. 



Fusus (Neptunea) utahensis Meek, 1873, Ann. Rept. U. S. Geol. Sur. Terr, for 1872, p. 



505. 

 Fusus? utahensis White, 1880, idem for 1878, p. 34, PI. 12, Fig. 2a. 



Original description: 



"Shell of moderate size, short fusiform; spire rather depressed, con- 

 ical; volutions about four; those of the spire a little convex; last one 

 large and ventricose, rounded or very slightly flattened around the 

 middle and contracted rather rapidly below into a narrow canal that is 

 longer than the spire, and more or less bent to the left; aperture rhom- 

 bic, angular above and narrowed and prolonged into the canal below. 

 Surface, as determined from a cast in sandstone, with obscure vertical 

 ridges, about twelve of which may be counted on the penultimate volu- 

 tion, while on the last, or body- whorl, they become nearly or quite 

 obsolete. (Eevolving lines probably also marked the surface of the 

 shell, though no traces of anything of the kind are seen on the cast, 

 excepting a shallow farrow above the suture on the volutions of the 

 spire.) 



