184 EUGLANDINA. 



glossy at first, fine longitudinal folds beginning on the third 

 whorl. The shell is strong, though somewhat translucent. 

 The later whorls are only moderately convex, the last is more 

 obliquely coiled and somewhat widened below. The color is 

 either reddish-yellow, becoming redder towards the apex, or 

 yellowish-brown, darker towards the summit, the peristome 

 always widely pale-colored, and the interior has a thin, some- 

 what roseate layer, which is narrowly and weakly thickened 

 at the peristome. A glossy cuticle covers the shell. The 

 sculpture consists of irregular, strongly developed, narrow 

 longitudinal plicae, which become weaker below on the last 

 whorl, not all of them reaching the base, whilst they are 

 sharp near the suture, which they do not quite reach, and are a 

 little drawn back by a groove running close below the suture. 

 There is, therefore, on the last whorl a narrowly-defined mar- 

 gined sutural border, not, or but weakly, thickened, while on 

 the upper whorls the suture is bordered only by a narrow 

 transparent band. When very strongly magnified, extremely 

 fine, close, somewhat wavy but not deep spiral grooves may 

 be seen, and in places very weak traces of long-granule sculp- 

 ture. The columella stands vertical to the axis, is strongly 

 arched and twisted, -with a thread-like white thickening on 

 the free margin, continued over the truncation. The parietal 

 callus is distinctly defined but thin. 



Length 34, diam. 13.75, aperture 15 mm. ; whorls 6%. 



Length 32, diam. 14.5, aperture 16.25 mm. ; whorls 6y 2 . 



Colombia: Frontino (Wallis). 



Glandina isabellina STREBEL, Beitrag, ii, p. 46, pi. 6 A, f. 

 40, a-c. Not G. isabellina Pfr. 



This form is evidently distinct from G. isabellina (Pfr.). 

 Strebel's description and figures are reproduced. 



14. E. CYLINDRUS (Martens). Vol. I, p. 34. Upper Mara- 



non, Colombia. 



15. E. LUCIDA (Strebel). Vol. I, p. 34. Colombia. 



16. E. ASSIMILIS (Reeve). Vol. I, p. 24. Venezuela. 



