426 MR. E. A. SMITH ON SHELLS FROM ADEN. [June 16. 



iilO. Tellina (Tellinella) madagascariensis, Gmelia. 

 Hab. Madagascar. 



211. Tellina (Tellinella) inflata, Chemnitz. 



Hab. Philippine Islands, China Sea, Mauritius, Red Sea, east 

 coast of Africa, Nicobars, Ceylon, &c. ; Port Curtis (Brit. Mus.). 



212. Tellina (Angulxjs?) adenensis. (Plate XXXIII. 

 %. 8.) 



Testa planissima, oblonga, antice rotundata, postice acuminata, 

 fere cequilateralis, roseo-albida, umbones versus plus viinus 

 aurantio tincta, postice radio albo avyuslo omnia ; valvfE nitidce, 

 lineis incrementi concentricis tenuiter striatcB (striis prope 

 marginem posticum validioribus, aliisque ad medium obliquis), 

 intus et extus radiatim substriatce ; margo dorsi anticus leviter 

 declivis, vix excurvatus, posticus oblique descendens, rectus, 

 cum margine posteriore angulum obtusum formans, ventralis 

 parmn arcuatus, postice vix sinuatus ; pagina interna alba, 

 superne ante apices aurantio tincta, lira postice radianfe 

 instructa ; denies cardinal es valvce dextrcB tres divergentes, in 

 sinistra duo, laterales nulli ; sinus pallii maximus, usque ad 

 cicatricem anticam produetus, supra medium valvce angulatus. 

 Longit. 45 millim., alt. 26^, dia?n. 7- 



T. armata, Sowerby (Conch. Icon. fig. 264), the type of which is in 

 the British Museum, is somewhat like the present species, esfiecially 

 in colour, but is less acuminate posteriorly and its hinder dorsal 

 margin is not so sloping. 



Besides the fine concentric lines of growth, T. adenensis exhibits 

 oblique striae upon the front half of the shell, which terminate about 

 the middle of the valves. The striae on the posterior dorsal slope 

 are considerably stronger than anv on the rest of the surface. The 

 raised ridge on the inner surface of the valves, which extends obliquely 

 from the umhones towards the posterior end of the ventral margin, 

 forms the white ray which is so conspicuous oa the outer surface. 

 Of the three teeth in the right valve, tiie front one is the longest, 

 the central smallest, and the hindmost bifid. In tiie left valve the 

 posterior tooth is very thin, whilst the other, which falls perpendicular 

 under the apex, is much stronger. 



213. Tellina (Angulus?) subpallida. (Plate XXXIII. 

 fig. 9.) 



Testa incequilateralis, oblonga, antice rotundata, postice angus- 

 tata, albida, versus apices interdmn pallide Jlavescens, zonis et 

 lineis concentricis griseo-hyalinis picta, mediocriter compressa ; 

 margo dorsi anticus leviter obliquus, subrectilinearis, posticus 

 valde declivis, ventralis late arcuatus, postice vix sinuatus ; 

 valvce lineis incrementi tenuibus concentricis striatce, striisque 

 aliis confipicue obliquis confertis fere undique sculptce ; denies 

 cardinales valvce dextrce duo divergentes, in valva sinistra unicus, 



