PSAMMOBIA 



Specie? 15. (Mus. Cumitig.) 

 PsAMMOBiA INSIGNIS. Psam. testa 



compressd, miigquilaieraU, solidiusculd, violaceo-ru- 

 bescente, • rubro-ptirpurascente pauci-radiatd, radiis 

 inaculii irregidaribus interruptis, transvenim tenue 

 sulcato-striatd, siriis ad umbones tenuihus, versm mar- 

 ffines crassioribus et profimdioribHS, latere antico send- 

 elliptico, obtwso, superne infeitieqiie aqualiler convexo, 

 latere postko superne recto, paululum decllci, angulo 

 coitcavo bipartito. 

 The remakkable Psammobia. Shell elong-ately traus- 

 verse, compressed, nearly equilateral, rather solid, 

 violet-red, sparsely rayed with reddish-purple, ray 

 interrupted with regular spots, transversely finely 

 groove-striated, striae fine at the umboes, thicker and 

 deej>er towards the margins, anterior side serai-ellip- 

 tic, obtuse, equally convex above and below, poste- 

 rior side straight at the upper part, a little slanting, 

 with a bipartite concave augle. 

 Deshayes, Pro. Zool. Soc. ISS*, p. 322. 

 Hab. Moluccas. 



Eather elongate in form, with the ])Osterior end pro- 

 duced into a bipartito couKively angled beak, with the 

 stria; raised upon it in concentric wrinkles. 



Species 16. (Mus. Cuming.) 



PsASlMOBiA pr.estans. Psam. testa elomjato-trauHversd, 

 conveximcnld, tvmiL, iueegiiilaterali, intense molaceo, 

 albo niiidejloccald, transmrsim et oblique minute regu- 

 lariter striata, ad latm poslicum striis subito inter- 

 ruptis, latere antico breviore, superne convexiusculo, 

 obtmo, latere postico latiore, aiujulo ohtuso obliquo. 



The surpassing Psammobia. Shell elongately trans- 

 verse, rather convex, thin, inequilateral, deep violet, 

 neatly flaked with white, transversely and obliquely 

 minutely regularly striated, stria; suddenly inter- 

 rupted on the posterior side, anterior side shorter, 

 rather convex and obtuse at the upper part, posterior 

 side broader, with an obtuse oblique angle. 



Deshayes, Pro. Zool. Soc. 1854, p. 322. 



Hab. Moluccas. 



Very characteristic in its style of colouring, which 



varies from rose-purple to very deep violet, prettily flaked 



witli white. 



Species 17. (Mus. Cuming.) 



Psammobia vespektina. Psam. testa ovato-transversd, 

 tKmidiusculd, subaqdlaterali, Imvi, nitente, tranwer- 

 sim striato-sulcatd, striis ad latus posticum conferti- 

 oribus, rufescente et caruleo-purpured, albo floceatd 

 et iriradiatd, extremitatibus rotundatis. 



The evening Psammobia. Shell ovately transverse, 

 slightly swollen, nearly equilateral, smooth, shining, 

 transversely striately grooved, striae on the posterior 

 side closer, reddish and blue-purple, flaked and three- 

 rayed with white, extremities rounded. 

 Solen vespertinus, Gmelin, Syst. Nat. p. 3228. 

 Lux vespertina, Chemnitz. 

 Tellina depressa, Pennant. 

 Tellina variabilis, Pulteney. 

 Tellina alhida, Dillwyn. 

 Psammobia vespertina, Lamarck. 

 Psammobia Jlorida, Lamarck. 

 Samjuiuolaria vespertina, Fleming. 

 Psammocola vesper tiualis, De Blaiuville. 



Hab. Mediterranean. 



This well-known species is mostly flaked and ihr..- 



rayed with white upon a deep purple-blue rust-tingti! 



ground. 



Species 18. (Mus. Cuming.) 

 Psammobia solida. Psam. testa late ovato-tramversu, 

 gibbosd, inaquilaterali, lateribus ad umbones decUvibus, 

 extremitatibus rotundatis; sordide alba, concmtrid- 

 rugoso-striatd, prope margines epidermide vestitd. 

 The solid Psammobia. Shell broadly ovately trans- 

 verse, gibbous, inequilateral, sides sloping from the 

 umboes, rounded at the extremities; dead-white, 

 concentrically roughly striated, covered near the mar- 

 gins with an epidermis. 

 Geay, MS., Brit. Mus. 

 Hab. Chili; Cuming. 



A roughly-striated gibbous dead-white .l/yw-like species, 

 covered towards the margins with a brown fibrous epi- 

 dermis. 



(Species 19. !Mus. Cuming.) 

 Psammobia ametiiystls. Psam. tesld elongato-trans- 

 versd, compressd, suljtequUaterali, dense tenuistriatd. 



December, 18f>5. 



