222 



is shown in Sowerby's figures. I hâve compared the fairly large séries of shells of this species 

 collected by the "Siboga" Expédition with the type-séries in the British Muséum (Nat. Hist.), 

 London, and find that the young shells are more regular in outline; they are generally less 

 trigonal and less rostrated than the adults. In the younger stages tbe shell is thinner and the 

 sculpture is not so deeply impressed. 



Sowerby's ^) record of P . manillae from South Africa is, as I found on examination of 

 his spécimens, based on incorrect détermination. 



Distribution : — Pitar manillae has so far been recorded from the Philippine waters. 



The "Siboga" shells of the species were dredged in the Madura Strait (St. 2), the 

 Anchorage off Djangkar, Java (St. 4), Bay of Bima (St. 47), Bay of Badjo, west coast of Flores 

 (St. 50) and at Maccassar (St. 71). 



3. Pitar affinis (Gmelin). 



1782. Venus laeta, etc. Chemnitz (n e c Linnaeus) , Conch. Cab., VI, p. 354, pi. XXXIV, 



figs- 353. 354. 

 788. Venus laeta Schroter (11 ec Linnaeus), Conch. Cab. Namen Reg., p. 112. 

 790. Venus affinis Gmelin, Syst. Nat. (éd. XIII), p. 3278. 



797. Bruguière, Encyclopéd. Méthod., pi. CCLXVI, figs. \a, b. 



818. Cytiierea laeta Lamarck (nec Linnaeus), Anim. sans Vertèb., V, p. 567. 

 825. Venus laeta Blainville (nec Linnaeus), Man. Malacol., p. 556, pi. LXXIV, fig. 1. 

 830. Cytherea laeta Deshayes (nec Linnaeus), Encyclopéd. Méthod., II, p, 56. 

 835. Cytherea laeta Deshayes (nec Linnaeus) in Lamarck, Anim. sans Vertèb., VI, p. 307. 

 846. Cytherea laeta Chenu (nec Linnaeus), Illustr. ConchyMol. , CytJierea, pi. XIV, figs. 3, 3^?, <5. 

 851. Cytherea laeta (nec Linnaeus) and ^^.zV^/Zrt/"*? Sowerby, Thés. Conch., II, p. 636, pi. CXXXIII, 



figs. 123, 124; p. 637, pi. CXXXIII, fig. 127. 

 853. Dione laeta Deshayes (nec Linnaeus), Cat. Conch. Brit. Mus., I, Veneridae, etc., p. 64. 

 853. Lioconcha affinis Morch, Cat. Yoldi, II, p. 27. 



856. Venus laeta Hanley (nec Linnaeus) in Wood, Ind. Test., p. 46, pi. VII, fig. 49. 



857. Callista affinis Adams, H. & A., Gen. Rec. Moll., II, p. 425. 



862. Cytherea affinis Romer, Malakozool. Blàtt., IX, p. "j^. 



863. Dione laeta Reeve (nec Linnaeus), Conch. Icon., XIV, Dione, pi. IX, figs. 35 «, b. 



867. Venus [Cytherea-Caryatis] affinis Romer, Mon. Venus, I, p. 105, pi. XXVIII, figs. 3, 3(? — c; 

 pi. XXXIII, figs. 6, 7. 



868. Cytherea affinis Pfeififer in Martini-Chemn., Conch. Cab. (N. F.), XI (i), Veneracea, p. 24, 

 pi. V, figs. I, 2. 



880. Cytherea [Caryatis) laeta von Martens, (nec Linnaeus), Môbius Beitràge Meeresf. Mauri- 



tius, Seychell., p. 325. 

 884. Cytheraea (sic) affinis Grasset, Ind. Test. Viv., p. 263. 

 890. Caryatis affinis Paetel, Cat. Conch. Samm., III, p. 70. 



895. Caryatis inflata Melvill & Standen, Journ. Conch., VIII, p. 129. 



896. Caryatis affinis Casto de Elera, Cat. Sist. Filip., p. 741. 

 903. Caryatis affinis Hidalgo, Obras Malacol., II, p. 201. 

 905. Caryatis affinis Hidalgo, Cat. Filip., p. 326. 



909. Caryatis laeta Melvill (nec Linnaeus), Trans. Linn. Soc. London (Zool.), XIII, p. 132. 

 91 1. Meretrix {Caryatis) affinis and var. inflata Lamy, Bull. Mus. d'Hist. Nat. Paris, XVII, p. 132. 

 911. Venus [Caryatis] affinis Pelseneer, "Siboga" Lamellibranches (Anat.), p. 52. 



928. j\Ieretrix [Pitar] affinis Faustino, Summary Philippine Mar. Freshw. Moll., p. 75. 



929. Meretrix [Pitar] affinis Dautzenberg, Faun. Colon. Français., III, p. 596. 



i) SowEKiiY, G. B. — Mar. Shells S. Africa, Supplément, p. 24 (1897). 



