113 209 



pallia! sinus ascends from the posterior muscle-impression upwards in a curve and 

 then descends obliquely down towards the palliai line, which it meets somewhat 

 before the palliai line has reached the anterior muscle-impression. 



Long. 9 mm., alt. 65 mm., crass. 3-5 mm. 



North end of Koh Chang, 1 fathom, coral blocks (2 -f '"/a). North end of 

 Koh Chang, 12 fathoms, old coral blocks (1 -|- *"/-'). West coast of Koh Chang, 1 

 fathom, old coral blocks (^/s). South-west end of Koh Chang, 1 fathom, corals (^/a). 

 Koh Kahdat, 1 fathom, sand ('/s). Koh Kahdat, 1—2 fathoms, corals ('/s). 



This species is most closely allied to the group:— M. inqiiinata, Desh., nasiita, 

 Conr., constricta, Brug., etc. It is, however, easily distinguished from them by its 

 characteristic sculpture. It varies considerably in form, which is no doubt due to 

 its inhabiting old coral blocks. In the material collected are several individuals 

 which are more ovate-oblong in form than the above description indicates; but 

 this is more particularly the case with the younger individuals, almost all of 

 which are more oblong than are the (apparently) full-grown ones. 



Fam. Psammobiidae. 



Asaphis deflorata L. 



Venus deflorata, Linnk, Systema Naturae, ed. X, 1758, p. G87, No. 108. — ed. XII, p. 1133, No. 132. — ed. 

 XIII cur. Gmelin, p. 3274, No. 24. 



— — — DiLLWYN, Descript. catalogue of reo. shells, I, 1817, p. 186, No. 65. 



— — — Römer, Krit. Untersuch, d. Arten d. MoUuskengeschl. Venus, 1857, p. 52, No. 24. 

 Asaphis — — Mörch, Journ. de Conchyl., VII, 1858, p. 139, No. 3. — Catal. Yoldi, II, 1853, p. 9, 



No. 83. 

 Capsa — — Reeve, Conchol. icon., X, 1856, Capsa, Sp. 1. 



Asaphis — — V. Bertin, Revision d. Garidees, 1880, p. 80, No. 5. 



— — — Hidalgo, Fauna malacol. de I. isl. P'ihpinas, 1903, II, p. 73, No. 149. 

 Capsa eflorata, d'Orbigny, Moll, de I'ile de Cuba, II, 1853, p. 258, No. 457. 



Venus violascens, Forskål, Descript. animal, quæ in itinere orientali observ., 1775, p. XXXI, No. 28. 

 Asaphis — — Mörch, Journ. de Conchyl., VII, 1858, p. 138, No. 2. 



— — — V. Bertin, Revision d. Garidees, 1880, p. 80, No. 2. 



Tellina anomala, Born, Inde.x rer. natur. Mus. Cæs. Vindobon., 1, Testacea, 1778, p. 20. — Testacea Mus. 

 Cæs. Vindobon., 1780, p. 31. 



— — — Chemnitz, Conchyl. Cabin., VI, 1782, p. 93, pi. 9, figs. 79—82. 

 Cardiam coccinea, Martyn, The Universal Conchologist, 1784, No. 135. 



Asaphis — — Mörch, Journ. de Conchyl., VII, 1858, p. 140, No. 4. 



— — — V. Bertin, Revision d. Garidees, 1880, p. 79, No. 1. 



— — — Dall and Simpson, The Mollusca of Porto Rico, 1901, p. 47(i. 

 Venus versicolor, Gmelin, Systema Naturae, 1790, p. 3281, No. 63. 



— purpurata, — loc. cit., p. 3289, No. 100, (Monstr.?). 

 Capsa rugosa, Lamarc k, Système d. anim. s. vert., 1802. p. 125. 



Sanguinolaria rugosa, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p. 511, No. 4. — éd. 2, VI, 1835, 



p. 170, No. 4. 

 Capsula — — Schumacher, Essai dun nouv. .syst. d. habit, d. vers, test., 1817, pp. 



130—31, pi. 9, fig. 1. 

 Psanimobia — — Sowerby, Genera of shells, No. 35, pi. 55, fig. 1. 



1). K. 1). VIdensli. Selsk. Skr., 7. Rielike. natuividensk. o(,' niiilhcm. Afd. V. 3. 27 



