328 Annals of the South African Museiim. 



sub-angular owing to the flattening of the posterior part of each, and 

 also in possessing four folds on the columella. Both species differ 

 from the other forms of BostelUtes in the slight development of the 

 ornamentation. 



BostelUtes is placed in the family Pleurotomidfe by Holzapfel and 

 Cossmann, and in the family Volutidae by Fischer and Dall." 



Bemarhs. — Some examples of this species were identified by Gries- 

 bach with Fasciolaria assiviilis, Stoliczka. Eleven specimens have 

 been seen. 



Family ACT^ONIDiE. 



Genus ACTJEON, Montfort. 



Action, sp. 



Plate XL., fig. 14. 



Description. — Shell moderately elongate. Spire consisting of 

 about five moderately convex whorls. Last whorl large, somewhat 

 cylindrical in form. Ornamentation consists of numerous narrow 

 spiral grooves, crossed by very fine transverse ridges, and separated 

 by rather broad, flat, smooth interspaces. The grooves are deeper 

 and further apart on the spire than on the last whorl. Aperture 

 long, narrow posteriorly, rounded anteriorly. 



Bemarks. — In form this species presents some resemblance to 

 Actaon curculio (Fovhes),] but is less elongate, and the spiral grooves 

 are much more numerous. 



In the only example which I have seen the surface of the shell is 

 poorly preserved, and the aperture is imperfect, so that the generic 

 position is not quite free from doubt. 



Genus ACT^ONELLA, d'Orbigny. 

 Sub-genus TROCHACT^ON, Meek. 



ACT.EONELLA (TrOCHACT.EOn), Sp. 



Plate XLL, fig. 1. 

 The only example of Actceonella (Trochactaon) consists of an 

 internal cast with a small part of the shell preserved at the anterior 

 end of the aperture. The apex and one side of the spire are 



* Ball, Tert. Fauna Florida, pt. i. (Trans. Wagner Free Inst. Sci., vol. iii., 1890), 

 p. 71. Cossmann, Paleoconeh. Comp., livr. 2 (1896), p. 114. 



t Trans. Geol. Soc, ser. 2, vol. vii. (1846), p. 135, pi. xii., fig. 25. Stoliczka, 

 Cret. Fauna S. India, vol. ii. (1868), p. 417, pi. xxvii., figs. 12, 13. 



