RHODEA. 239 



Length 40, diam. 5, or across the keel 7 mm. Aperture 5 

 mm. (Jouss.). 



Ecuador: Guallabamba and between Pacto and Pachijal 

 (Cousin). 



Rhodea cousini Jouss., Bulletin Societe Philomathique de 

 Paris, n. ser. ii, p. 36, pi. 1, f. 15 (1900). 



Smaller than R. gigantea, but Larger and more slender than 

 R. wallisiana. It tapers above less than R. gigantea. 



The Bulletin containing M. Jousseaume's paper was re- 

 ceived at the Academy on August 13, 1900. 



7. R. AEQUATORIA Da Costa, PI. 38, fig. 13. 



Shell elongate, cylindric, dextral or sinistral, dirty whitish,, 

 more or less covered with a buff cuticle. Spire cylindric, 

 gradually tapering above, rather obtuse at the summit. 

 Whorls 13, the upper 5 a little convex, the following 6 flat, 

 the last two concave, carinate at the periphery, radially stri- 

 ate below the angle, flat. Aperture (broken and left blank 

 in the figure). Columella arcuate, spirally revolving, form- 

 ing a hollow umbilicus. Length 23, diain. 4.5 mm. (Da C.). 



Ecuador: Paramba. 



Rhodea cequatoria DA C., Proc. Malac. Soc. Lond. iii, p. 

 304, 'figs, iii and iv (Oct. 1899). Rhodea cequatorica Da C., 

 SYKES, Journ. of Malacol. viii, 1901, p. 20. 



"From the imperfect condition of the apertures of these 

 shells it is impossible to ascertain the exact form of the 

 mouth, but from their general aspect it is probable this is 

 similar to that of Rhodea wallisiana Dohrn, which however 

 is a somewhat larger species. Two specimens only were 

 found by Mr. Rosenberg during his recent travels in Ecuador, 

 one being dextral, the other sinistral " (Da C.). 



Mr. Sykes, in his catalogue of the genus, has altered the 

 spelling of the name aquatoria, and wrongly quotes the page. 



8. R. EQUATORENSIS Jousseaume. PL 38, fig. 8. 



Shell cylindric, openly and very deeply umbilicate, thin, 

 waxy-white, obliquely very delicately and quite regularly 

 striate, whorls 10, the first a little convex, first two whorls 



