1901.] MOTHEK-OF-PEARL OYSXEES. 393 



Species 34. Margaritifera reentsii. 



Avicula (Meleagrina) reentsii, Dunker, 1872, p. 9, tab. '2. tigs. 1 

 & 2. Eed Sea. 



The following species, from Reeve's and Dunker's Monographs, 

 ai-e founded upon inilocalized material. Most of the shells figured, 

 and such of Reeve's types as are preserved, are too young to 

 be identfied with safety. They probably all belong to the Lingah 

 division, and are, I believe, in most cases the young of M. vulgaris 

 and M. radiata. 



Species of this kind, based upon unlocalized immature and scanty 

 material, can have no scientific value, and only a historic interest. 



M. erocafa (Swainson), Dunker, 1872, p. 16. 

 M. radula (Reeve), 1857, sp. 23. Type in B.M. 

 31. irram (Reeve), 1857, sp. 30. Type not extant. 

 M. chcanoides (Reeve), 1857, sp. 41. Type in B.M. 

 J/. Jiysfriv (Reeve), 1857, sp. 18. Type in B.M. 

 M. pallida (Dunker), 1872, p. 46, tab. 15. fig. 4. 

 M. fjrisea ,, „ p. 11, tab. 2. fig. 5. 



M. prasina ,, ,, p. 52, tab. 18. fig. 2. 



M. concinna ,, ,, p. 53, tab. 18. fig. 4. 



M. bicolor „ ,, p. 70, tab. 24. fig. 7. 



M.jiuctuosa „ „ p. 71, tab. 25. fig. 2. 



[^Avicida {Meleagrina) magellanim Stempell, 1899 ("Die Mu- 

 scheln der Sammlung Plate," Fauna Chiliensis, Bd. 2, erstes 

 Heft, S. 230, Taf. 12. tigg. 13-15), strongly suggests the genus 

 Philippiella (Pfeffer, 1886). vSpecimens in the B.M. from Punta 

 Arenas, 9-10 fms.. Dr. Coppinger, 79.10.15. — 79 and 80 appear to 

 me to be quite in agreement with Stempell's description and figure. 

 The fact that the British Museum specimens were taken in the 

 same locality and depth as Stempell's confirms my opinion that 

 they are identical. I can see no grounds for placing them in the 

 genus Pteria.^ 



Bibliography. 



Browne, P., 1756. Natural History of Jamaica. 



Carpenter, P. P., 1857. Cat. Coll." Mazatlan Shells in the Brit. 



Museum. 

 Chemnitz, J. H., 1785. Martini und Chemnitz, Syst. Conch.- 



Cab., Bd. 8(Niirnberg). 

 Conrad, T. A., 1837. Journ. Acad. Nat. Sci. Philad. vol. vii. 



pt. ii. p. 246. 

 Cooke, A. H., 1886. Ann. Mag. Nab. Hist. (ser. 5), vol. xvu. 



pp. 128-142. 

 D'Orbigny, a., 1847. Voy. dans I'Amer. Meridionale, tome 5. 

 Dunker, W., 1852. " Aviculacea nova," Zeitschr. f. Malakoz. 



9 Jahrgang, 1852 : Cassel, 1853, pp. 73-80. 



