The Cretaceous Fauna of rondoland. 339 



Genus HETEROCEKAS, d'Orbigny. 

 Heteroceras, sp. 

 Plate XLII, fig. 4. 

 A small portion of a specimen of Heteroceras is elliptical in section, 

 and is ornamented with strong, oblique ribs, which become obsolete 

 on the inner margin of the whorl. At intervals some of the ribs are 

 more prominent than the others ; between the prominent ribs from 

 four to six of the smaller ribs are seen. 



This species shows some resemblance to H. Reussianum 

 (d'Orbigny)," but the ribs are more widely separated, and the more 

 prominent ribs are not produced into spines. 



Heteroceras, sp. 

 Plate XLII., fig. 5. 



Some portions of the evolute part of a species of Heteroceras show 

 a slightly elliptical or nearly circular section, and are ornamented 

 with numerous, sharp, narrow ribs which cross the whorls somewhat 

 obliquely and do not bear tubercles. The sutures are deeply 

 divided. 



This species shows some resemblance to H. indicum (Stoliczka) f 

 but the whorls are more slender and the transverse constrictions 

 appear to be absent. 



Genus HAMITES, Parkinson. 



Sub-genus ANISOCERAS, Pictet. 



Hamites (Anisoceras) subcompressus, Forbes. 



Plate XLIII., fig. 2. 



1846. Ha)uites subcompressus, Forbes, Trans. Geol. Soc, ser. 2, 



vol. vii., p. 116, pi. xi., fig. 6. 

 1866. Anisoceras indicum, Stoliczka, Cret. Fauna S. India, vol. i., 



p. 181, pi. Ixxxv., figs. 1-5 (non H. indicus, Forbes). 



1895. Hamites {Anisoceras) subcompressum, Kossmat, Beitr. z. 



Palaont. u. Geol. Osterr.-Ungarns, &c., ix., p. 145, pi. xix., 



figs. 10-12. 



? 1903. Anisoceras subcompressum, Whiteaves, Mesozoic Fossils 



(Geol. Survey, Canada), vol. i., pt. 5, p. 338, pi. xlv. fig. 1. 



* For references to figures and descriptions of this species see Woods, Q.J.G.S., 

 lii. (1896), p. 74. 



t Cret. Fauna S. India, vol. i. (1866), p. 184, pi. Ixxxvi., fig. 1. 



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