BIVALVE SHELLS. 193 



antice brevissima, postice late truncata, margine superiore 

 inferiori parallelo grisea, longitudinaliter costellata, transversim 

 et distanter lamellosa ; lamellis erectis, tenuibus, latis, in latere 

 postico angulum rectum formantibus; lunula elongata, angusta, 

 irregulariter circumdata ; valvis intus violaceis, in medio flavo- 

 rubescentibus, marginibus in medio subcrenulatis ; sinu pallii 

 trigono, profundo, apice acuto. 



Hab. Mazatlan. 



9. Venerupis macrophylla, Desh. B.M. 



V. testa ovato-transversa, tenui, depressa, inaequilaterali, antice 

 obtusa, brevi, postice latiore, truncata, candidissima, tenuissime 

 longitudinaliter striata, lamellis tenuibus, erectis, postice latis- 

 simis et contortis cincta ; striis planulatis ; lamellis ad margi- 

 nem contortis, plicatis, subcrenulatis; valvis intus albis, cardine 

 lato, inaequaliter tridentato, dente mediano bifido ; sinu pallii 

 angusto, trigono, apice obtusiusculo, oblique parum ascendente, 



Hab. Insulae Philippinenses. 



10. Venerupis Irus. B.M. 



V. testa ovato-transversa, inaequilaterali, antice breviore, angus- 

 tata, postice latiore, subangulata, alba, vel luteola, aut rubes- 

 cente ; lamellis erectis, transversis tenue plicatis cincta, inter- 

 stitiis longitudinaliter striatis, striis tenuibus, depressis ; mar- 

 ginibus integris, simplicibus ; nymphis intus atro-violaceis. 

 Concha trifidos, Gualt. Ind. Test. pl. 95. f. A. 

 Donax Irus, Linn. Syst. Nat. ed. 10. p. 683. no. 90 ; ed. 12. 

 p. 1128.no. 111. 



Chemn. Conch. vi. 271. pl. 26. f. 268-270. 



Schrot. Einl. iii. 100. no. 10. 



GmeZ. p. 3265. no. 11. 



Poli, Test. des deux Siciles,\\. 83.pl. 10. f. 1, &pl. 19. f. 22, 



23. 

 Brug. Encycl. Meth. pl. 262. f. 4. 

 Donov. Brit. Shells, \. pl. 29. f. 2. 

 Pulteney, Dorset Cat. p. 32. pl. 12. f. 6. 

 Montagu, Test. Brit. p. 108 & 573. 

 Mat. Sf Rack. Linn. Trans. viii. 77- 

 Penn. Brit. Zool. ed. 2. iv. 200. no. 6. 

 Dillw. Cat. i. 156. no. 21, syn. plur. excl. 

 Wood, Ind. Test. pl. 6. f. 21. 

 Turt. Conch. Dict. p. 43. no. 7- 

 Gerville, Cat. des Coq. de la Manche, p. 23. 



9 



