of the Genus Ancillaria. 211 



4. Ancillaria cinnamomea. Lam. 



A. teal^ oblongdfSub-cylindricd, castaned; basi albifasciatd; labio exteriore 



unklentato. 

 Shell oblong, sub-cylindrical chestnut ; base with a white band ; outer lip 



one-toothed. 

 A. cinnamomea? A.testdoblongS, ventricoso-ct/lindricd, castaneo-fulvd ; 



anfractibus superne albido-fasciatis ; varice columellari inifo, substriafo. 



Lamarck, Anim. sans Vert. 7, 413. 

 A. cinnamomea? A. oblonga, ventricoso-cylindrica, castaiiea ; anfractibus 



superne albido fasciatis ; varice columellari svbslriato, Lamarck 



Annal: du Mus. vol. 16, p. 304. 

 Martini et Chemnitz, 10. tab. 147 f. 1381. male. Ency. M^th. pi. 393. f. 8? 

 Arwilla marginata. Sow. Genera, fig. 1, optime. 

 Ancillaria cinnamomea. Bowdich, Elem. Conch, pi. 10. flg. 10. m,ale. 



Shell, one inch one-seventh in length, of which the spire occu- 

 pies three-tenths of an inch ; shape oblong, somewhat cylindri- 

 cal. The spire being longer in proportion than in the last species, 

 gives this a more pointed appearance. The ground colour is pale 

 cinnamon or fulvous chestnut, darkest round the suture and at the 

 base ; having, at both these extremities, one or two narrow bands 

 of white; the upper band, (at the base of the spire) is sometimes 

 obsolete, but the lower ones follow the course of two indented lines 

 which border the double belts, as in the last species ; the upper of 

 these lines terminates in a mucronate tooth on the outer lip ; the 

 pillar is pure white, occupies one half of the length of the aper- 

 ture, is longer, and much less oblique than in the last. Here the 

 real difference between the two species will be seen ; for the white 

 bands in cinnamomea are often variable, and can, therefore, only be 

 taken as an auxiliary character. 



Inhabits Ceylon and other parts of the Indian Ocean. This, 

 although a distinct species, has been little understood ; and the 

 contradiction between the descriptions of Lamarck, and the figures 

 which he has quoted, renders it impossible to decide with precision 

 •which is the true cinnamomea. In both his descriptions, Lamarck 

 says, the varix ofthe pillar is " roussdtrc." He adds further, 

 *' on voit MM silhn dorsal transverse et tres oblique vers la partie 

 inf^rieure du dernier ;" (Syst. 7, p. 413.) but our species has two. 



