PELECYPODA, 15 



on the posterior side behind the furrow, where only strong striae 

 of growth are seen. 



Locality.— Rare at Yenangyat and Minbu. 



Remarks. — The sculpture of the surface distinguishes Tellina 

 kingi at once from Tellina hilli ) even in small fragments. 



SOLEN. sp. 



The posterior fragment of a shell measuring 34 mm. in length and 

 7 mm. in height exhibits the usual characters of this genus ; but owing 

 to its bad preservation I refrain from giving it a specific name. 



Locality. — Very rare at Yenangyat. 



CORBULA HARPA, d'Archiac, Plate III, Fig. 8— 8a. 

 1853. Corbula harpa, d'Archiac and Haime, Descr. des Anim, foss. du groupe nummu* 

 litique de P Inde, page 236, plate XVI, fig. 8, a, b, 9. 



The shell is inequivalve, the right valve being triangular, but not 

 very inequilateral, inasmuch as the posterior side is only slightly 

 produced ; the beak is nearly median, sharp, and strongly rolled in^ 

 wards. A fine ridge is running from the beak towards the corner 

 of the ventral and posterior margin ; before it the surface is covered 

 with very regular, strong, rounded and horizontal ribs, behind it only 

 striae of growth may be seen. The left valve is considerably smaller 

 than the right one, triangular in shape, but a little more inequilateral 

 and, except fine striae of growth, perfectly smooth. 



Dimensions. — Height 9 mm. Length xi mm. Thickness 6 mm. 



Locality. — Rare at Minbu and Yenangyat. 



Remarks. — The specimen of which the measurements are given 

 represents a medium sized one, but as all the larger ones are in 

 some way damaged, their measurements could not be given. 1 

 mention this because it might appear that the species is of small size 

 while the largest specimen was certainly of at least double the measure- 

 ments given. The characters of the Burma species agree so well 

 with Corbula harpa from Western India, that it must be identified 

 with that species, although it seems that the ribs are slightly thinner. 

 Corbula harpa has apparently a near relative in the living Corbula 



( 15 ) 



