338 



inwidth at both ends; apex somewhat trilobate; ventral valve 

 longitudinally thickened near the centre within 



lig. 1 represents the usual variety with its peduncle. Ym 2 

 mside of the dorsal valve. Yig. 3, inside of the ventral valve 

 1 ig. 9 a variety of a brown colour, found in sand at low water at 

 the.Mand of Siquijor, by Mr. Cuming. Fig. 10, a dark lotted 



From the Indian Ocean and the Moluccas, H. Cuming. 



2. LiNGULA HiANs (pi. Ixvii. f. 4.) Swains. 



L. testa elongato-oblonga, tenuissim^, angustiori, prope basin 

 paulatim attenuate, convexiuscuia ' ^ ^ ^ 



sliS 5f ' ^'"^i^^^f oblong form, very thin and rather narrow 

 shglitly attenuated and rather convex toward the base 



JJistinguished from Z. anaiiua by being much tliinner and of a 



TaTed tttdTer ^'^^ 'V' ""''' 4htlyandg.adu%ate! 

 nuatecl toward the base; it only gapes at the extrendties whpn tliP 

 valves are separated from the aiimal and dried 



]833^p. m''^'' AuDEBAEDi (pi. Ixvii. f. 5.) Brad. Zool. Proc. 



L testa elongato-oblonga, glabr^, pallid^ flava, viridi transversim 

 picta, margme antico rotundato, viridi wansversim 



yeL^^leZulf'^'f^ '^^' 1 '^"^. t^ '' g™ ^^^ '^'^ trans- 

 verse lines ot that colour are produced by the progressive increase 

 of the shel winch is smaH and parcliment Hke.^ In all ?he dried 

 ^ecimens the tliin anterior edge is contracted into a^uare form 

 but m Its natural state tliis edge is rounded. A general contra^' 



CarrXnTheT r' 1,'™' ^'^"^ ^ rr^^' and'morT4n W 

 cnaracter than they reaUy possess, and the remains of the cilia of 



the man le give to their edges a bearded appearance.--^/. / 



Found by Mr. Cuimng in hard coarse sand at about half tide 



?nThe%"^;7Gu;t^^^^^^^ ''' '^''''' '' ''' '''''' ''^^^ 

 4. LiNGULA SEMEN (pi. Ixvii. f. H.) £rod. 1 c 



margmet^r;:^^^^^^^^^ 



Shell ovate-oblong, thickish, flattened, wliitish, verv smooth 

 andpohshed; anterior margin rounded ^ 



indeeTaViof t T^'^' ^'f'\'\^^ i^ usual to Zin^ula, so firm 

 indeed as not to have contracted at aU in drying. In size and 

 appearance it bears a near resemblance to a melmi feed.'-S 

 Dredged off the Isle of Plata, West Columbia; H Cuming 



