93 



A. iridescens and A. trochilus appear to be synonymous with Leach's species. Most of the records 

 of Avicula crocea froni the Indian Océan are, in my opinion, to be referred to Leach's P. chinensis. 



The shell of P . chinensis is very obliquely triangular, somewhat convex, broadly sinuated 

 posteriorly, with a sculpture consisting of minute wavy striae in the young, but becoming less 

 prominent in full-grown shells. The colour of the shells varies from orange-red to dark brown 

 or with only brownish rays on an orange background. The posterior wing is not so well marked 

 in the younger shells. 



Distribution : — P. chinensis appears to be widely distributed in the Indo-Pacific area. 



The "Siboga" Expédition collected shells, mostly half grown, from the Bay of Badjo, 

 west of Flores (St. 50), Lamakera, Solor Island (St. 61), Macassar and surroundings (St. 71), 

 St. 97 (5°48'.7N., ii9°49'.6 E.), Anchorage off North Ubian (St. 99), St. 164 (i°42'.5S., 

 130° 47^.5 E. ; 32 mètres), Banda Anchorage (St. 240), Anchorage off Pulu Jedan, east coast of 

 Aru Islands (St. 273), Buka or Cyrus Bay (St. 299) and St. 310 (8° 30' S., 119° 7^.5 E. ; 73 mètres). 



5. Pteria penguin (Rôding). 



742. Coucha Aliforniis etc. Gualtieri, Index Test., pi. XCIV, figs. A, A, A. 



773. Knorr, Vergnùg. d. Augen etc., VI, pi. II, fig. i. 



785. Labritin, seu lavacrjim ciipreiiin Chemnitz, Conch.-Cab., VIII, p. 145, pi. LXXXI, fig. 728. 



790. Mytiliis hirzindo var. § Gmelin (non Linn.), Syst. Nat. (éd. XIII), p. 3357. 



798. Pinctada penguin Rôding, Mus. Boltenianum, p. 167. 



819. Avicula macroptera and A. lotorium Lamarck, Anim. sans Vertèb., VI, p. 147. 



824. Avicula macroptera Blainville, Dict. Sci. Nat., XXXII, p. 317, pi. XC, fig. 3. 



825. Avicula macroptera Blainville, Man. Malacol., p. 531, pi. LXIII, fig. 3. 

 825. Avicula macroptera Sowerby, Cat. Tankerville, p. 24. 

 830. Avicula macroptera Deshayes, Encyclopéd. Méthod., II, p. 99. 



836. Avicula macroptera and A. lotorium Deshayes in Lamarck, Anim. sans Vertèb. VII, p. 97. 

 840. Avicula lotoriîun Ffeiffer, Krit, Register, p. 76. 



843. Avicula macroptera Hanley, Rec. Biv. Shells, p. 261. 



844. Avicula lotorium PQtiez & Michaud, Gai. Douai, II, p. 104. 



845. Avicula macroptera Catlow & Reeve, Conch. Nomencl., p. 78. 



852. Avicula macroptera and A. lotorium Chenu, lUustr. ConchylioL, pi. I, pi. II, figs. 5, a, b. 

 855. Avicula lotorium and A. macroptera Berge, Conchylienbuch, pp. 86 — 87. 

 857. Avicula macroptera and A. lotorium Reeve, Conch. Icon., X, Avicula, pi. III, figs. 2, 3. 

 857. Avicula macroptera Adams, H. & A., Gen. Rec. Moll., II, p. 525. 

 860. Avicula macroptera and A. lotorium Reeve, Elem. Conch., II, p. Ç)-}). 

 862. Avicula macroptera Chenu, Man. ConchylioL, II, p. 159, fig. 790. 

 869. Avicula macroptera Dunker, Cat. Mus. Godeft'roy, IV, p. 115. 

 872. Avicula macroptera Dunker in Martini-Chenin. Conch.-Cab. (N. F.). VII (3), Avicîila, p. 22, 



pi. VII, p. 26, pi. VIII, fig. 5 (young), p. 55, pi. XIX, fig. 2. 



877. Avicula macroptera de Man, Rech. Faun. Madagascar, etc., pt. V, Mollusques, p. 9. 



878. Avicula macroptera Kobelt, lUustr. Conchylienbuch, p. 365, pi. CVII, fig. 3. 



884. Avicula macroptera and A. lotorium Grasset, Ind. Test. Viv., p. 303. 



885. Avicula macroptera Smith, "Challenger" Lamellibranchia., p. 284. 



890. Avicula macroptera Paetel, Cat. Conch. Samm., III, p. 203. 



891. Avicula macroptera Smith, Proc. Zool. Soc. London, p. 435. 

 895. Pteria macroptera and var. lotorium Pilsbry, Cat. Mar. Moll. Japan, p. 146. 

 901. Avicula macroptera Sturany, Denkschr. Kais. Akad. Wiss. Wien (Math. -Nat.), LXIX, p. 288. 



905. Avicula macroptera and A. lotorium Hidalgo, Cat. Filip., p. ^Gj. 



906, Avicida macroptera Melvill and Standen, Proc. Zool. Soc. London, p. 802. 

 906. Pteria macroptera Owston, Japan. Loochooan Shells, p. 34. 



