18/8.] FROM THE ANDAMAN ISLANDS. 819 



nulous lirae, with a furrow on each side, whereof the lower is the 

 more conspicuous. Immediately below this the colour of the inter- 

 rupted scarlet stripes changes to black, and they assume the form of 

 somewhat quadrate spots, but towards the aperture become more 

 flame-like and merge into scarlet. 



66. Haliotis varia, Linne. 



H. varia, Linn., teste Reeve, Conch. Icon. iii. sp. 4. 

 Hab. Philippines. 



67. Atys cylindrica, Helblhig; Sowerby, Thesaurus, ii. pi. 125. 

 f. 114. 



Var. = Bulla solida, Brug. Enev. Meth. pi. 360. f. 2 ; Thesaurus, 

 pi. 124. figs. 112, 113. 



Var.=Jtys elongata, A. Ad.; Sowerby, Thesaurus, ii. pi. 125. 

 fig. 121. 



Hab. Philippines, Ceylon. 



68. Carditjm hystrix, Reeve, Conch. Icon. ii. figs. 40 a, b. 



Hub. Philippines {Cuming'). 



The Andaman specimen of this lovely shell belongs to Reeve's var. 

 (5, being pure white, with the exception of a pale tint of pink on the 

 posterior side near the ligament. 



69. Cardium (L^vicardium) australe, Sowerby, Proc. Zool. 

 Soc. 1840, p. 105 ; Conch. Illust. figs. 12, 12* (overcoloured) ; Reeve, 

 Conch. Icon. ii. fig. 97. 



C. pulchi-um, Reeve, Conch. Icon. fig. 98. 



Hab. Philippines, China, Ceylon. 



The differences of form, sculpture, and colouring which Reeve con- 

 sidered sufficient to distinguish his C.pulehrum from C. australe are, in 

 my opinion, hardly sufficient to constitute a variety. The form in 

 almost every species of Cardium is subject to considerable variation, 

 and likewise the colour. Reeve does not mention that the anterior 

 dorsal area in his type is blotched with purple at the extremity, as 

 is the case in C. australe. The sculpture of both forms is identical : 

 both have the groove on the posterior side, which, within the valves, 

 forms a raised oblique ridge ; but in some specimens it is more con- 

 spicuous than in others. The Andaman examples are rather young 

 and bear the remains of their epidermis, which takes the form of very 

 thin, short, irregular yellowish lamellae arising from the radiating 

 striae. Their colour is" whitish or yellow, marked with subconcentric 

 irregular yellowish brown bands, which are more purple-brown within 

 the valves and towards the umbones. The latter at the tips and the 

 hinge-margin are purple ; and within, a line of the same colour extends 

 from the umbo to about the middle of the valves. 



70. Corbula fortisulcata. (Plate L. figs. 23-236.) 



Shell very inequivalve, inequilateral, somewhat triangular, dirty 

 white, solid, rounded at the posterior extremity and beaked anteriorly : 



