The Cretaceous Funna of Pondokaid . 321 



This species differs from P. aunctdatus in having a smaller apical 

 angle, and in the transverse ribs crossing the whorls obliquely 

 and bending towards the aperture. 



The apertui'e and outer hp are not preserved, and the callus 

 is not developed, but the general character of the ornamentation 

 of the shell is similar to that of some other species of Pugncllus. 

 Griesbach's specimen is in the Hamburg Museum. 



Family FUSID^. 



Genus CEYPTOEHYTIS, Meek. 



Cryptoehytis rigida (Baily). 



Plate XXXIX., fig. 2. Plate XL., fig. 1. 



1855. Voluta rigida, Baily, Q.J.G.S., xi., p. 459, pi. xii., fig. 4. 



Non 1867. Fasciolaria rigida, Stoliczka, Cret. Fauna S. India, vol. ii., 



p. 109, pi. X., figs. 10-16. 



Description. — Shell fusiform, scalariform. Spire shorter than the 

 last whorl, consisting of six convex whorls with deep sutures. Pos- 

 terior part of whorls with a concave depression or sulcus, having a 

 tumid margin or ridge near the suture. Spiral angle 54°. 



Ornamentation consists of broad, rounded, often prominent, trans- 

 verse folds, which are indistinct on the posterior sulcus and dis- 

 appear near the middle of the last whorl. Numerous strong, 

 narrow, spiral ribs are present, except on the posterior sulcus, and 

 are sepai'ated by interspaces wider than themselves. Very much 

 finer spiral ribs cover the entire surface of the shell, and growth- 

 lines and growth-ridges also occur. 



Aperture angular behind. Outer lip crenulate, angular at the 

 limit of the sulcus. Inner lip thin, concave. Columella without 

 folds. Anterior canal moderately long, slightly bent. 



Length 52 mm. Breadth 24 mm. 



Affinities. — The specimens agree with the figure given by Baily 

 except in having fewer and broader transverse folds. Examples 

 from the Trichinopoli Group were identified by Stoliczka with this 

 species, but were placed in the genus Fasciolaria, and have since 

 been referred by Meek ■'■ and Cossmann f to Cryptorhjtis, and by 

 Dall \ to Bostellites. Whilst the Trichinopoli specimens resemble 



* Invert. Cret. and Tert. Foss. U. Missouri (1876), p. 367. 

 t Paleoconch. Comparee, livr. iv. (1901), p. 57. 



I Tertiary Fauna of Florida (Trans. Wagner Free Instit. Sci., vol. iii., 1890), 

 p. 72. 



