236 140 



Circe Crista' divaricata, Chemnitz, Fischer, Catalogue d. Moll, de I'lndo-Chine, p. 231. 

 Crista divaricata, Chemnitz, Hidalgo, Obras malacologicas, I, tom. II, 1903, p. 233, No. 337. 



— — — Dautzenberg & Fischer, Journ. de Concliyl., vol. 53, 1905, p. 458. 



Koh Mak, sandy coast ('/2). 



Long. 36 mm. 



Islands in the Gulf of Siam (Morlet). 



Distribution: — Singapore, Salang, Mergui Archip., Andamans, Madras, 

 Gulf of Manaar, Bombay, Karachi, Persian Gulf, Gulf of Oman, Red Sea (?), Zanzibar, 

 Mozambique, Natal, Seychelles (Dautzenberg). — Poulo Condor, Annam, Philip- 

 pines, Hong Kong, Shanghai, Japan (Dunker), Japan (Inland Sea, Stearns). 



In spite of the statements of Reeve, Sowerby and Issel, it is doubtful 

 whether C. divaricata, Gh., occurs in the Red Sea. Later authors do not record it 

 with certainty from Aden or from the Red Sea. When Pagenstecher ^ says regarding 

 this species: "Von sechs Exemplaren gehören vier der Varietät gihba Lam., eins 

 der pectinata Lin. an," he has evidently had other species before him. 



Tapes (Paratapes) papilionaceus, Lam. 



Venus papilionacea, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p. 594, No. 36. — éd. 2, VI, p. 352, No. 36. 

 Tapes — — Sowerby, Thesaurus Conchyl., II, p. 679, No. 2, pi. 145, figs. 1 — 2. 



— rotundata. Reeve, Conchol. icon., XIV, Tapes, Sp. 7. 



Venus papilionacea, Lamarck, Peeiffer in Martini u. Chemnitz, Conchyl. Cabin., XI Bd., 1 Abth., p. 167 



No. 33, pi. 15, fig. Ö. 

 Tapes [Textrix) papilionacea, Lamarck, Römer, Monogr. d. Moll. Venus, II, p. 21, No. 3, pi. 6, fig. 1. 



— papilionacea, Lamarck, Crosse et Fischer, Journ. de Conchyl., vol. 40, 1892, p. 76. 



West coast of Cambodge in the Gulf of Siam (Pavie). 



Distribution:— Ceylon, Mauritius, Madagascar. — "New Holland," West 

 Australia. 



It is strange that this large, conspicuous, and well-known species^ with the 

 exception of the above quotation, has not been taken in the Gulf of Siam or adja- 

 cent waters, either by the Danish Expedition or by others. Can it perhaps be due 

 to erroneous determination of T. semirugatus, Phil., when the specimen collected 

 by Pavie, is given as T. papilionaceus, Lam., by Crosse and Fischer? 



Tapes (Paratapes) semirugatus, Phil. 



Venus semirngata, Philippi, Zeitschrift f. Malakozoologie, IV, 1847, p. 88, No. 22. 



— — - Abbild, u. Beschreib., Ill, p. 24 (76), pi. 7, fig. 4. 



Tapes — — Sowerby, Thesaurus conchyl, 11, p. 681, No. 9, pi. 145, fig. 12. 



— (Textrix) semirugata, Philippi, Römer, Monographie d. Moll. Venus, II, p. 29, pi. 9, fig. 1. 



— {Paratapes] — — Edg. Smith, Report on the Lamcllibranchiata of the Challenger 



Exped., p. 115. 



— polita, Sowerby. Thesaurus conchyl., II, p. 682, No. 12, pi. 145, figs. 15— 16. 



— — — Reeve, Conchol. icon., XIV, Sp. 49. 



' Ueber die von R. Kossmann am Rothen Meere gesaram. Mollusken, 1877, p. 40. 



