98 SUBULINA, COMORO IS. 



"The shell is of a very pale fawn color, is glossy, trans- 

 parent, smooth to the naked eye, but feebly and irregularly 

 striate under sufficient magnification." (Morelet). 



39. S. PYRAMID ALIS (Morelet). PI. 13, fig. 22. 



"Shell imperforate, turrited, thin, smooth, polished, trans- 

 lucent, pale horn colored. Spire pyramidal, apex acute. 

 Whorls 9, convex, obsoletely wrinkled below the impressed, 

 brown-margined suture, the last subangulate at the base, 

 scarcely exceeding one-third of the length. Aperture oblong, 

 biangular, external margin thin, unexpanded, columella 

 truncate, shortly canaliculate. Length 15, diam. 5 mm." 

 (Morelet.) 



Comoro Islands: Mayotte (Marie). 



Stenogyra pyramidalis MORELET Journ. de Conch, xxxi, 

 p. 194, pi. 8, f. 9. July, 1883. 



Morelet adds that this species is distinguished by its pyra- 

 midal, acuminate shape. It is smooth, polished and fragile, 

 of a clear transparent tawny tint. The superficial striae with 

 which it is engraved are quite numerous on the first whorls of 

 the spire, but lose their regularity on reaching the last, where 

 they may be seen below the sutures indistinctly. It is quite 

 distinct from all others of the same region. 



40. S. TEREBELLA (Morelet) . PI. 13, fig. 26. 



"Shell acutely turrited, thin, subdiaphanous, smooth, shin- 

 ing, uniform horn colored or obscurely banded; spire pyra- 

 midal, apex rather acute. Whorls 9, a little convex, joined by 

 an impressed suture, the last slightly ventricose, over three- 

 sixths the entire length of the shell. Aperture semioval, ex- 

 ternal margin thin, columella abruptly truncate. Length 17, 

 diam. 6^/2 mm." (Morelet). 



Comoro Islands: Grand Comoro (Humblot.) 



Stenogyra tercbclla MORELET Journ. de Conch, xxxiii, p. 

 290, pi. 14, f. 1. October, 1885. 



"The shell is glossy, very superficially striate, of a grey- 

 ish-horn color, with indistinct, irregularly spaced lines. A 

 variety has in place of this ornamentation, a diffuse brown- 



