812 MESSRS. MELVILL AND STANDEN ON [Nov. 13, 



Plicatula ramosa Lam. 



P.G. In one or two soundings at 30-35 fathoms, mostly on 

 rock-basis. 



LimjEA juglandula Melvill, sp. n. (Plate LV. fig. 5.) 

 L. testa 7ni7iuta, cequilaterali, subovata, concava, solida ; costis 

 radiantihus crassis circa 17-18, simul ac liris concentricis 

 squamoso-jlmhriatidis arctissime spiralitei' 23i'cedita, interstitiis 

 sitnilimodo liratis; tmibonihus jn'omimdis, involutis ; dentihus 

 utrinque numero circa 10; 2)«'gina interna alba, hated ')nuUum, 

 nitida, inargine crenulato. 

 Alt. 3 '50, lat. 3, diam. 3 mm. {sp. maj.). 



Hah. P.G. and M.C. Gulf of Oman. Lat. 24° 58' N., long. 

 56= 54' E. ; 156 fathoms. Mekran Coast. Lat. 25° 10' ^^., long. 

 60° 34' E. ; 40 fathoms. 



Abimdant in shell-sand, ranging from 1'50 to 3 mm. in diameter. 

 All the examples found were dead, but clean and perfect half -valves. 

 The form is almost equilateral, very convex, and nut-like, hence the 

 specific name proposed, being the diminutive oi jif,gla7is, a walnut. 

 Superficially it is finely but closely radiately libbed and spirally 

 •squamulate, the scaly fimbriations being concentric and extending 

 uniformly over the whole surface. Teeth almost straight, ten on 

 each side of the ligament. It is very like Lima torresi Sm. in 

 general appeai'ance, but smaller, and may possibly prove to be a 

 local race of Limcea jyectinata Ad., an Erythraean species. 



Fam. LiMiD^. 

 Lima arcuata Sowb. 



M.C. Charbar. 7 fathoms, rocky bottom. 



Lima fragilis Gmel. 



P.G. Maskat. 5-10 fathoms. 



Mostly very delicate, and with the -radiating strise more nume- 

 rous than in the typical form, as compared with specimens in the 

 British Museum (Nat. Hist.). 



Lima (Limatula) leptocarya Melv. 



P.G. Maskat, 10 fathoms. Gulf of Oman, lat. 25° 04' N., 

 long. 60° 20' E. ; 60 fathoms. 



Order lY. EULAMELLIBRANCHIATA. 



. Suborder A. SUBMYTII.ACEA. 



Fam. Carditidje. 

 Cardita antiquata Lam. 



P.G. Dabai, 8 fathoms. 



M.C. Generally distributed at 5-10 fathoms, on sandy mud 

 near rocky patches. 



I. Bombay, frequent (^i5ej'cro??ift/e). Southwards to Ratnagiri 

 and Goa [Lt.-Col. H. D. Olivier). 



