134 



i86o. Pinna augustana, P. atropnrpiirea, P. electrina, P. euglypta, P. fnmata, P. madida, 



P. Aïenkei, P. miitica, P. Philippinensis, P. regia, P. vespertina, P. virgata and 



P. Zebuensis Reeve, Elem. Conch , II, p. 69. 

 1866. Pinna augustana, P. funiata, P. virgata, P. Philippinensis, P. atropurpurea, P. regia, 



P. vespertina, P. Menkei, P. euglypta and P. Zebuensis von Martens '), Ann, Mag. 



Nat. Hist., (3) XVII, p. 87. 

 1880. Pinna aequilatera von Martens (nec Weinkaufif), Môbius Beitràge Meeresf. Mauritius, 



Seycheli., p. 317, pi. XXII, fig. 4. 



1889. Pinna vienkei Whitelegge, Journ. Roy. Soc. N. S. Wales, XXIII, p. 244. 



1890. Pinna atropurpurea, P. electrina, P. euglypta, P.fumata, P. madida, P. Menkei, P. mutica, 



P. Philippinaruni, P. regia, P. vespertina, P. virgata and P. Zebuensis Paetel, Cat. 

 Conch. Samm. III, pp. 208 — 210. 



1890. Pinna funiata, P. euglypta, P. mutica, P. Menkei, P. madida. P. atropurpurea, P. Zebuensis 



Clessin in Martini-Chemn. Conch. -Cab. (N. F.), VIII (I), Malleacea. p. 54, pi. XXII, 

 fig. I; p. 55. pi. XXV, fig. l; p. 68, pi. XXVI, fig. 2; p. 68, pi. XXVI, fig. l; p. 70, 

 pi. XXV, fig. 2; p. 71, pi. XXVII, fig. 2; p. 72, pi. XXIII, fig. 2. 



1891. Pinna electrina, P. Philippinensis, P. Molluccensis, P. a ira ta, P. vespertina, P. regia, 



P. virgata (Clessin non Menke) Clessin, op. cit., p. 75, pi. XXIX, fig. 2; p. 79, 

 pi. XXXII, fig. I; p. 82, pi. XXXIII, fig. l; p. 83, pi. XXXII, fig. 2; p. 90, pi. XXXIX, 

 fig. 2; p. 91, pi. XL, fig. I; p. 100, pi. XLV, fig. I. 

 1896. Pinna funiata and P. philippinaruni Casto de Elera, Cat. Sist. Filip., p. 799. 



1905. Pinna electrina, P. funiata, P. mutica and P. Philippinensis Hidalgo, Cat. Filip., p. 370. 



1906. Pimia fumata and P. zebuensis Standen & Leicester, Ceylon Pearl Oyster Rept., V, p. 290. 

 1909. Pinna mutica Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat.-Math., (7) V, p. 149. 

 191 1. Pijina regia Pelseneer, "Siboga" Lamellibranches (Anat.), pi. IX, fig. 11. 



igij.i Pinna bicolor var., Odhner (nec Gmelin), Kungl. Sv. Akad. Handl., LU, N" 16, p. 7. 



1924. Pinna atropurpurea, P. fumata, P. madida, P. menkei and var. caviterga Hedley, Rec. 



Austral. Mus., XIV, pp. 144—147, pi. XIX, figs. 2, 3, pi. XX, fig. 8. 

 1929. Pinna atropurpurea Winckworth, Proc. Malacol. Soc. London, XVIII, p. 283. 



I hâve nothing- to add to Winckworth's récent notes on this species. I hâve examined 

 the entire material in the British Muséum (Nat. Hist.), London, and fully agrée with the synonymy 

 as sLiggested by Winckworth. 



Distribution : — P. atropurpurea appears to be w^idely distributed in the Indo-Pacific 

 area; détails of its distribution are inckided in Winckworth's paper cited above. 



In the "Siboga" collection the species is represented by a fair séries of shells 'from 

 Saleyer reef (St. 213). 



Subgenus Atrina Gray. 



1847. Atrina Gray, Proc. Zool. Soc. London, p. 190. 



1895. Atrina Dali, Trans. Wagner Free Inst. Philadelphia, III, p. 659. 



1925. Atrina Woodring, Miocène MoUusks from Bowding, Jamaica, Pelecypods, etc., p. 57. 

 1929. Atrina Winckworth, Proc. Malacol. Soc. London, XVIII, p. 283. 



As Winckworth has pointed out Atrina is distinguished from Pinna s. s. by "the 

 absence of a medial groove on the inside of each valve from the anterioi* extremity to the 

 posterior adductor scar". 



Gray designated Pinna ni^ra Cheninitz as the type of Atrina, but this species, as 

 Winckworth has shown, is synonymous with Pi7tîia [Atrina) vexillum Born. 



l) VON Martens in this account considered P. atigtistana and P. fumata as synonyms of P. hystrix, but tlie latter species is, 

 as is discusseJ fuither on, only a synonym of P. stiaugei. 



