MOLLUSCA TESTACEA. 443 



vix recurvi, acuti, integerrimi seu superne parum emarginati. Cardo in 

 valvula dextra dentibus cardinalibus duobus parum divergeutibus : autico 

 aiitrorsum porrecto, lateraliter compresso, integerrimo ; postico angusto, 

 cum fovea triangulari iuterposita interne producta et postice fossula altera 

 oblouga prodeute valvae alterius. In valvula sinistra deutibus duobus, tri- 

 augularibus, submargiualibus, externe compressis, valde divergeutibus, cum 

 fovea intermedia deiite longitudiuali iuaequaliter bipartita; parte central! 

 majore trigona, ligamentum excipiente ; parte laterali oblouga antrorsum 

 brevi, augusta, antica, prodeute cardinal! valvse oppositae. Dentes laterales 

 nulli. Margines internee vix prominulae, sulco obsolete in acie notatae. 

 Ligamentum internum in foveis trigonis affixum. Impressiones musculares 

 transversales, ovatse, interne truncatse. Sinus palliaris profundus, ovatus, 

 antice rotundatus. Augulus palliaris brevis, acutus, antrorsum in linca 

 angusta prolongatus. To this belong E. castanea, Recluz (Donax castanea, 

 Mont.), E. nitens, Turton (Mya nitens, Laskey), E. pelluc Ida, Macgillivray 

 (Tellina pelludda, Brown.) All three on the coasts of Great Britain. The 

 first two are figured. 



Psammobia solida, Phil., from Chiloc, Ps. molacea, (Solen), Lam., and Ps. 

 costulata, Turton, are figured in Philippi's Abbilduugeu. (Ib. viii.) Ps. 

 Kiisteri, Anton, elongata, Lam., radiata, Duuker, new species, from Amboyua 

 and 3ava,Jtavicans, Lam., and serotina, Lam. Ps. decora (Ann. x, p. 81), is 

 figured in Hinds (Sulphur). 



Mactra cyynea, Philippi (Menke, Zeits. p. 161), allied to M. grandis, Lam. 

 Red Sea. The Plate of Mactrae in Phih'ppi's Abbild. vii, contains If. soli- 

 dissima, Cheinu., ponderosa Phil, new species, America, in the Atlantic 

 Ocean, lateralis, Say, and subtruncata (Triyonelhi), Dacosta. 



Lutraria maxima, and rJiynclueiia, Jonas (Menke, Zeits. p. 34), the latter 

 from New Holland. 



Pythina, Hinds (Sulphur), nov. genus Mactracearum. Testa transversa, 

 subaequilateralis, sequivalvis. Valva altera dente unico mediano parvo, 

 duobus lateralibus, altera dentibus duobus lateralibus. Ligamentum inter- 

 umn. Impressiones musculares duee rotundatae, Impressio pallii rcctius- 

 cnla, simi uullo. P. Deshayesiana, triangular, white, with three grooves 

 divided in the middle. New Ireland. 



Recluz (Rev. Zool. p. 216) would do away with the genus Goodalia, 

 Turton, seeing that it coincides with the genus Asiarte. 



Three new species of Necera by Hinds, from the Philippines (in Proc. 

 p. 97). Five species are figured by him in the Voyage of Sulphur, which 

 were instituted in the Proceedings, Zool. Soc. 1843, p. 76. 



Deshayes figures three species of his genus Cardilia, which he places 

 provisionally in the family of the Mactraceas, viz. : C. semisulcata (Isocardia 

 semisidcata, Lam.), and two new species, C. inermis, white, cordiform, half 

 grooved, with shallow sulci, from Sumatra ; and C. Martini, long cordiform, 



