The Cretaceous Fauna of Pondoland. 309 



pallial line cannot be determined. Stoliczka" remarks of Solen 

 Gncraiujcri that it " belongs apparently to Pharella, or possibly to 

 Azor." In form the Pondoland specimens seem to approach more 

 nearly to Azor than to Pharella. 



Family TEEEDINID^. 



Genus TEEEDO, Linnaeus. 

 Teeedo, sp. 

 Plate XXXVIL, fig. 8. 

 1855. Tcrcilina, sp., Baily, Q.J.G.S., xi., p. 462. 



Groups of somewhat irregularly curving tubes, some of which 

 have a diameter of 18 mm., are found in pieces of wood. There is 

 also an internal cast of the valves, showing a narrow furrow extend- 

 ing somewhat obliquely from the umbo to the ventral margin. 

 Behind the umbo there is another furrow, larger and deeper, passing 

 to the postero-ventral part of the valve. 



This species was referred to the genus Teredina by Baily, but 

 since the tube does not appear to have been united to the valves, 

 and there is no evidence of the existence of accessory dorsal plates, 

 I think that it is more likely to be a Teredo. Better specimens, 

 however, are needed before its affinities can be satisfactorily 

 determined. 



Associated with the specimens mentioned above are a few internal 

 casts of the valves of a small form, 4 or 5 mm. in height, which are 

 probably the young of the same species. 



Family POROMYACID^. 



Genus LIOPISTHA, Meek. 



Section Psilomya, Meek. 



LiopisTHA (Psilomya) coreugata, sp. nov. 



Plate XXXVII., figs. 10-12. 



Description. — Shell small, oval, moderately inequilateral, inflated, 



with the postero-dorsal part compressed. Anterior and posterior 



margins rounded. Ventral margin gently curved. Umbones very 



prominent, curving inward and slightly forward. 



Ornamentation consists of strong, rounded concentric ribs, which 

 disappear on the postero-dorsal part of the valve. 

 * Cret. Fauna S. India (1870), p. 99. 



