Zoological Society. 505 



solidti, cotnpressiuscuhi, vix nitidd, albidd aut flavescente, macuUs 

 ant stricfis lineisve brunneis aut fusco-purpurascentlbus radiatd, 

 concentrice sidcatd ; sidcis ant ice confertis, subhnbricatis, postke 

 sublamellosis remotiusculis ; margine ventrali convexo, utrinque 

 siirsum acclinante ; dorsali utrinque subdeclivi, antice convexiits- 

 culo, postice subrecto, subincurvato, subdentato ; latere postico 

 attenuato, rostrato, paululum breviore, ad extremitatem biangidato ; 

 costd umbonali vulde prominente ; ligamento inconspicuo ; super- 

 ficie internd albidd aut flavidd ; dentibus lateralibiis validis, sub- 

 cequidistantibus. Long. 0-95 ; lat, 2-40 poll. 



Hab. Guacomayo, Central America; in coral sand. 



Intermediate between Spengleri and Mexicana. 



Tellina Rastellum. Tel. testd elongatd, convexitisculd, cequilate- 

 rali, solidd, flavidd, pallide rosea radiatd, antice sulcatd, postice 

 squamosd ; squamis crectis, lamellosis, in iisdem seriebus cum sulcis 

 concentricis, ordinatis ; margine ventrali vix convexiusculo ; dor- 

 sali utrinque paululum declivi, antice vix convexiusculo, postice 

 recto aut subincurvato ; latere postico attenuato, subrostrato, ad 

 extremitatem oblique biangidato ; cxtremitate anticd rotundatd ; li- 

 gamento, et costd umbonali, conspicuis ; superflcie into'nd albidd, 

 umbones versHs awantio utrinque fucutd; dentibus lateralibus 

 validis, subtequidisfantibus. Long-. 1"61 ; lat. 3*61 poll. 



Hab. Zanzibar. Mus. Cuming, Stainforth, &c. 



A species frequently confused with pulcherrima, but much more 

 elongated, the sulci stronger, and the scales entirely absent from the 

 anterior side. 



Tellina asperrima. Tel. testd oblong o-elUpticd, convexiusculd, 

 solidiusculd, flavidd aut incarnatd, roseo-radiatd, totd superflcie 

 externd, squamis asperrimd ; squamis antice semilunatis, postice (et 

 prasertim supra costam umbonalem distinctani) spinosis ; margine 

 ventrali medio subrecto flexurd dislinctd ; dorsali utrinque subde- 

 clivi et paidulum convexiusculo ; latere ant ico breviore; extremitate 

 posticd subbiangulatd, attenuatd ; dentibus lateralibus magnis, an- 

 tico approximato. Long. TO; lat. TSo poll. 

 An unique specimen, in the cabinet of Mr. Cuming ; found by him 



at Sual, province of Pangasinan, isle of Luzon (sandy mud, six 



fathoms). Allied to ptdcherrima. 



Tellina Jubar. Tel. testd T. virgatse affinis, sed magis trian- 

 gulari, altiore, minus elongatd; rubro-purpured , radiis albis aut 

 albidis ornatd ; margine ventrali subarcuato ; dorsali utrinque de~ 

 cliviore ; superflcie internd albidd, aut coloribus externis fucatd. 

 Long. 1-65; lat. •2-50 poll. 



Hab. ? Mus. Cuming, Sowerby, &c. 



Tellina verrucosa. Tel. testd oblongo-elongatd, solidd, com- 

 pressd; aut flavidd, rubro-purpureo radiatd, aut pallide rosed, 



the Lamarckian sense of the words ; but as I find this is contrary to the 

 practice of the other wi-iters in these Proceedings, for the sake of uniformity 

 I now conform to their phraseologj'. 



