Zoological Society. 49 



three cardinal teeth in the left valve. Beyond the almost obsolete 

 umbonal ridge the concentric sulci become broken into small scales. 

 The delicate radiating striae are quite obsolete in front. The shell 

 seems slightly inequivalve. 



Tellina iNiEQUALis. Tel. testd subovatd, valde incequilaterali, 

 solidd, convexd, candidd, tenuiter striatd ; striis superne obliquis, 

 in/erne concentricis, flexuosis ; supra costam umhonalem inconspi- 

 cuam, rugis erectis flexuosis, asperatd ; mar'gine ventrali convex^ 

 issimo ; dorsali antice suhincurvato et valde declivi, postice brevi, 

 recto, subdeclivi ; latere antico producto, ad extremitatem attenuato, 

 rotundato ; extremitate posticd obtusd ; natibus acutis ; lunuld di- 

 stinctd ; supeiflcie internd candidd, aut flavescente ; cardine dente 

 laterali magno, subremoto, antico. Long. 0*90; lat. I'SO poll. 

 Hab. Ceylon. Mus. Cuming. 



An unique specimen of this curious shell is in the museum of Mr. 

 Cuming, and reminds us in many particulars of the Tellina Gargadia ; 

 but that species is neither so narrow nor so greatly inequilateral, its 

 oblique striae do not extend over the posterior portion of the shell, 

 and its hinge is clearly provided with two lateral teeth. The elevated 

 flexuous wrinkles radiate down the umbonal slope in three distinct 

 lines. 



Tellina Felix. Tel. testd subovali, solidiusculd, valde inaquilate- 

 rali, convexiusculd, nitidd, Icsvigatd, intus extusque rosed ; margine 

 ventrali vix convexiusculo ; dorsali antice vix declivi, convexo, 

 postice valde declivi ; latere postico brevissimo, obtuse subtruncato, 

 inferne subangulato ; extremitate anticd rotundatd ; costd umbonali 

 et flexurd ventrali subobsoletis ; cardine dente laterali magno, 

 approximate, antico. Long. 0'38 ; lat. 0'80 poll. 



Hab. Panama; sandy mud, six to ten fathoms. 



This elegant little shell approximates in form to the British Dona- 

 cina, but differs as well in colouring as in sculpture and teeth. 



Tellina columbiensis. Tel. testd ellipticd aut oblongo-ellipticd, 

 compressiusculd, subtenui, lavigatd, intus extusque albidd, epider- 

 mide tenuissimd, fulvo-cinered indutd ; margine ventrali medio 

 convexiusculo, utrinque arcuato ; dorsali utrinque convexo, antice 

 paullb, postice satis declivi; latere antico longiore, rotundato; 

 extremitate posticd acuminatd ; fleocurd subobsoletd ; dentibus pri- 

 mariis minimis, lateralibus nullis. Long. 1*70; lat. 3 poll. 

 Hab. Monte Christi, "West Columbia ; sandy mud, twelve fathoms. 

 Its more compressed valves and minute teeth will distinguish it 

 from the few species which are allied to it in outline. The hinge- 

 margin is very short and rather broad. The general shape is that of 

 T. Soverbii. 



Tellina Souleyeti. Tel. testd oblongd, tenuiusculd, convexo- 

 depressd, intus extusque albidd, Icevigatd ; margine ventrali magis 

 minusve convexo ; dorsali antice convexiusculo et subdeclivi, pos- 

 tice subrecto aut subretuso et valde declivi ; flexurd costdque um- 

 bonali distinctis ; ligamento infosso ; natibus acutis ; latere antico 

 Ann. ^ Mag. N, Hist. Vol.xv. E 



