170 74 



Lucina (Codakia) divergens, Phil. 



Lucina ilii'crgens. Philippi, Abbild, u. Beschreib, neuer od. wenig gek. Conchyl., Ill, 1850, p. 103, pi. 2, 

 fig. 4. 



— — — E.V. Martens u. Langkavei,, Donum Hi.smarckianum, 1S71, |). 63. 



— — — LiscHKE, Japanische Meeres-Conchyl., II, 1871, p. 132. 



— {Lentillaria) divergens, E. v. Maktens, Moll. d. Maskarenen u. Seychellen, 1880, p. 145. 



— fibula, Reeve, Conchol. icon., VI, 1850, Lucina, Sp. 33, pi. 7, figs. 33, 37, 38. 



— — — Adams & Reeve, Zoology of "Samarang" Mollusca, p. 80. pi. 24, fig. 5. 



— ramulosa, Goui.n, Unit States Explor. Exped. 1838-42, XII, Moll. & Shells, 1852, p. 415, pi. 36, 



fig. 523. — Proceed. Boston Soc. Nat. Hist., Ill, 1850, p. 235. — Expedition Shells, p. 82. 



— iCodakia) manda, A. Adams, Proc. Zool Soc. London, 1855, p. 225, No. 18. 



Codakia bella delicatula, Pilsbry, Proc. Acad. Nat. Sc. Philadelphia, vol. 56, 1904, p. 555, pi. 41, figs 

 15—16, 



North end of Koh Chang, old coral blocks, 1 fathom ('/-'). Koh Lorn, west of 

 Koh Chang (1). Between Koh Kahdat and Koh Kut, 6 fathoms, clay mixed with 

 sand ('/a). Koh Kalidat (*/j). Koh Mak, sandy coast (i/a). 



Long. 5 — 135 mm. 



Distribution: — Mergui Archip., Gulf of Manaar, Maldive Isis., Bombay, 

 Persian Gulf, Red Sea, Mascarenes, Isl. of Rodriguez. — Philippines, China Seas, 

 Japan, Torres Strait, Port Essington, east coast of Australia as far as Sydney (New 

 South Wales), King Isl. (Tasmania), Mariannes, Ladrones, New Caledonia, Lifu, New 

 Hebrides, Viti, Funafuti Atoll, Samoa, Hervey Isis., Rarotonga, Tahiti, Paumotu Isl. 



The specimens from the Gulf of Siam come nearest to the variety delicatula, 

 from Riukiu Island, described by Pilsbry (loc. cit.). — The boundary line of this 

 species is not quite settled and requires to be investigated more closely; Reeve's 

 "fibula" is no doubt also a collective species. Dall (Synopsis of the Lucinacea, 

 1901, p. 798) is of opinion that Philippi's name divergens must yield place to Conrad's 

 L. bella, which has the priority; it is, however, doubtful if these two species are 

 synonymous. In 1834 Conrad (Journal of the Acad, of Natur. Sciences of Phila- 

 delphia, VII, p. 254) described Lucina bella from specimens collected by Mr. Th. 

 NuTTALL "in muddy marshes near Sta. Diego" (Upper California);' but Dall thinks 

 that there must have been a mistake, and that the specimens were "probably" 

 collected at the Sandwich Islands. Before rejecting Philippi's "divergens" all the 

 forms in question should be thoroughly investigated. 



Lucina (Codakia) fijiensis, Sm. 



Lucina (Codakia) fijiensis, Ena. Smith, Rep. on the Lainellibranchiata of the Challenger Expedition, 1885 

 p. 184, pi. 13, fig. 9. 



Between Koh Mesan and Cape Liant, 5—9 fathoms (V2). Strand of Koh Kahdat 

 (A single worn valve). 



Long. 95 mm., alt. 9 mm., crass. 8 mm. 



' See also P. P. Carpenter, Monogr. of the Shells collected by T. Nuttall ou the Californian Coast 

 (Proc. Zool. Soc. London 1856, p. 218, No, 47). 



