PELECYPODA. 7 



comparing them with Dr. Alcock's original that the sculpture of the 

 costae is exactly the same, so that there remains no further doubt as 

 to the identity. The costae are straight or sometimes a little un- 

 dulating, equal in size and occasionally trifurcating, united at regular 

 intervals across the deep intercostal incisions by horizontal spicules. 



Locality. — Pretty common at Yenangyat. 



Remarks.— The living specimen has been dredged in 32 fathoms 

 off Ceylon. 



II. PELECYPODA. 



OSTREA, Sp. 1. 



Only the cast of a medium sized species has been found ; it is, 

 however, too ill-preserved to be of any value. 



Locality. — Minbu. 



OSTREA, Sp* 2. 



Another fragment of an oyster has been found at Yenangyat, 

 which certainly belongs to a different species ; while the above cast 

 represents abroad species, the Yenangyat specimen must be referred 

 to a narrow and elongated one. It is, however, not sufficiently 

 well preserved to permit a specific definition. 



Locality. — Yenangyat. 



PECTEN cf. FAVREI, d'Archiac. 

 1853. Pecten favrei, cPArchiac and Haime, Desc. des Anim. foss. du group© nummuk 

 itique de 1' Inde, page 270, plate XXIV, figs. 5 and 5a. 



Some fragments of a radially ribbed Pecten might be referred to 

 this species ; they are, however, not well enough preserved to permit 

 an absolutely certain determination ; the character of the ribs and the 

 shape of the valves resemble, however, the above-named species very 

 closely. 



Locality. ~~ Minbu and Yenangyat. 



DAPHODERMA CAELATA, Reeve, Plate I, Fig. 4— 4«« 

 1833. Area burnesi, d'Archiac and Haime, Desc. des Anim. foss. du groupe nufn- 

 mulitique de 1' Inde, page 264, plate XXII, fig. 5 a. b. c. d. 



The few specimens \ under observation are not well preserved 

 but the sculpture of the valves clearly proves their identity with the 



( 7 ) 



