34 Melvill, Molluscan Fauna of the Arabian Sea, etc. 



Tellina (Arcopagia) HABROTIMA, Sp. nov. 

 (PI. I, f. 8.) 



7. testa delicata, sordzde alba, umbonibiis parvis, acutis, 

 sed conspicuis, candidis, ant ice ovata, postice rotund ata, 

 margine dorsali lente utrimque declivi, ventrali rotundato, 

 arctissime radiatim costulatis, et spiraliter similiter con- 

 centrice decussatis, costulis spinoso-lamellatiSy inters titiis 

 quadratis. 



Alt. 13, lat. 15, diam. 4*50 mm. 



Hab. Angrias Bank, Arabian Sea (Captain Tindall). 



An exceedingly delicate, ornate shell, the sculpture 

 being of a highly-chased radiate and concentric costula- 

 tion, the interstices being quadrate. The radiate ribs are 

 spiny, lamellate, in number about forty-six. In form, and 

 general decussation this Tellina resembles most closely 

 T. carnicolor Hanley, from the Philippines, the number of 

 radiate ribs is, however, nearly doubled in that very finely 

 sculptured species, the ribs being much thinner and finer. 

 There is likewise strong superficial similitude to T. costata 

 Sowb., but the umbones in that species are more elevated, 

 the shell narrower by far, and the ribs only about 

 thirty-two. 



(ajSpoT-fjuoc, delicately refined.) 



Tellina (M^ra) actinota, sp. nov. 

 (PL 2, f. r.) 



T. testa parva, delicatula, oblonga, antice prolongata, 

 postice curta, margine ventrali convexo, dorsali utrimque 

 declivi, superficie delicate concentrico-striaia, striis postice 

 paidlum squamatis, pulcherrime puniceo-radiata ab um- 

 bonibiLS ad marginem ventralem, intus nitida, radiis 

 conspicuis. 



Alt. 6-50, lat. 9, diam. 3-50 mm. 



Hab. Muscat, Arabia ; 10 fathoms, coral sand. 



