SUBULINA, COMORO IS. 99 



ish zone below the suture. One finds a similar coloration in 

 Stenogyra nebulosa from Landana." (Morelet}. 



41. S. OENATA (Morelet). PL 13, fig. 27. 



1 ' Shell imperf orate, turrited, thin, obsoletely striate, waxen, 

 horny-yellow, purple flamed on the last Whorl. Spire subu- 

 late, apex somewhat acute. Whorls 8 nearly flat, joined by 

 a slightly margined suture, the last dilated, equaling three- 

 sevenths the entire length of the shell. Columella slightly 

 arcuate, abruptly truncate, touching the base. Aperture 

 semioval, margins thin and unexpended. Length 14, diam. 

 5y 2 mm." (Morelet). 



Comoro Islands : Grand Comoro ( Humblot) . 



Stenogyra ornata MORELET, Journ. de Conch, xxxv, p. 287, 

 pi. 9, f. 6. October, 1887. 



1 ' One might at first be tempted to consider this shell to be 

 a small variety of Steno. terebella, which it repr'oduces 'al- 

 most exactly in shape ; but this similarity does not hold good 

 when the details are examined. Without mentioning the size, 

 which is a variable character, one sees that the whorls of the 

 spire are less convex in the new species, and that it is com- 

 plete in eight instead of nine. They are, moreover, distinctly 

 margined, a particular that does not exist in 8. terebella, the 

 same with the mode of coloration, Which is rare in the genus 

 and maybe considered specific." (Morelet). 



42. S. CEREOLA (Morelet). PL 13, fig. 32. 



" Shell elongate turrited, apex obtuse, rather solid, finely 

 hair-striate, shining, pellucid, yellowish white; whorls 8, a 

 little convex, separated by a minutely denticulate suture, the 

 last subangulate below the middle, hardly exceeding one quar- 

 ter the length of the shell. Columella arcuate, obliquely 

 truncate, not reaching the base of the aperture ; aperture ob- 

 long; peristome sample, acute and unexpanded. Length 14, 

 diam. 4 mm." (Morelet.) 



Comoro Islands: Mayotte and Moheli under dead wood 

 near the shore. (M. Ves'co). 



Achatina cereola MORELET Series Conchyliologiques ii, p. 

 71, pi. 5, f. 3 (November, 1860). 



