210 



GASTROCOPTA. 



Fig. 12. 



rica (Anc), an opinion in which M. Dautzenberg concurs. 

 Ann. Mag. N. H. (9), xv, p. 479. 



Gastrocopta madagascariensis Bavay & Germain. Text-fig. 

 12. 

 Shell small, subcylindric, narrowly umbilicate, thin, smooth, 

 pale brown, silky. 5^ convex whorls, the first three more con- 

 vex, the last wider, forming nearly 

 half the shell. Aperture is oval, little 

 lengthened, bitten out by the penult 

 whorl; peristome a little reflected 

 outwardly, the outer, basal and colu- 

 mellar borders continuous, inter- 

 rupted at the penult whorl; lower 

 margin rounded, columella straight, 

 outer margin rather straightened, 

 then inflexed. Aperture a little fun- 

 nel-shaped, 5-toothed: upper palatal 

 [angulo-parietal] tooth large, squarish, somewhat forked, en- 

 tering ; columellar tooth conic ; lip teeth immersed, the median 

 quite strong, the upper and lower smaller. 

 Alt. 2, diam. 1 mm. (Bavay & Germain). 

 Madagascar: neighborhood of Cape Diego (Decary). 

 Gastrocopta (Falsopupa) madagascariensis Bavay et Ger- 

 main, Bull. Mus. Nat. d'Hist. Nat., Paris, 1920, p. 156, figs. 

 3,4. 



"This species recalls, by the general form and the char- 

 acters of the aperture, the Gastrocoptas of the Mascarenes, 

 notably G. microscopica Nevill of the Seychelles and Masca- 

 renes. It differs mainly by the less ovate shape, the whorls 

 less joined, the aperture less subquadrangular, and the dif- 

 ferent position of its denticulations " (B. & G.). 



This is another member of the little group described in 

 vol. xxiv, pp. 127-133. The characters assigned and the crude 

 figures given scarcely serve to separate it from forms already 

 named. The figures are here copied photographically. 



Page 165, 12th line : for fig. 9, substitute fig. 7. 



