310 Annals of the South African Museum. 



Length 9 mm. ; height 6-75 mm. 



Bemarks. — This is distinguished from the other species of Liopistha 

 by the coarser ornamentation. There are three specimens in the 

 Museum of the Geological Society of London, all being internal casts. 



Family PHOLADOMYID^. 

 Genus GONIOMYA, Agassiz. 



GONIOMYA, Sp. 



Plate XXXVII., fig. 9. 

 One specimen of a small Goniomya has been found. It is an 

 internal cast of a right valve, and is too imperfect for specific 

 description, but appears to be distinct from any of the few forms 

 known from the Upper Cretaceous deposits. The posterior ribs 

 slope towards the postero-ventral extremity, and apparently on the 

 median part of the valves ribs were either absent or poorly developed. 



SCAPHOPODA. 



Family DENTALIID^. 



Some fragments of Dcntalium, or an allied form, are in the Gries- 

 bach Collection, but are too imperfect for identification. 



GASTEROPODA. 



Family TKOCHID^. 



Genus MAEGARITA, Leach.- 



Margarita radiatula (Forbes). 



Plate XXXVIL, fig. 13. 



1846. Trochiis radiatidus, Forbes, Trans. Geol. Soc, ser. 2, vol. vii., 



p. 120, pi. xiii., fig. 11. 

 1868. Solariella radiatula, Stoliczka, Cret. Fauna S. India, vol. ii., 

 p. 375, pi. xxiv., figs. 17-19 ; pi. xxviii., figs. 8, 9. 

 The examples of Margarita do not appear to difi"er from M. radia- 

 tula (Forbes) as figured and described by Stoliczka, except in the 



* Dall and Pilsbury use Marijitritd in preference to Eani'irgavita, Fischer, 1885. 

 S3e Tryon and Pilsbury, Man. Conch., vol. xi. (1889), p. 285. 



