COCHLOSTYLA-COCHLODRYAS. . 177 



Easily recognized by the yellowish upper surface, banded with 

 brown at the circumference, and bright green base. 



Of this species Semper says : I found this species exclusively in 

 the wide valley of the Rio Grande de Cagayan, in northern Luzon ; 

 and as well at the village Aparri, hard by the valley's mouth, as in 

 the upper mountainous course, on the western side of the eastern 

 Cordillera, in the valleys of the rivers Ilagon and Catalangan, at 

 Satpat, Ilagan and Minanga. The shell varies much . . . One 

 example from Ilagan before me is entirely green, with a sulphur- 

 yellow band at the periphery. Another from Satpat has a second 

 broad brown band upon the upper surface, and the periphery is 

 girdled by two narrow dark yellow bands, strongly contrasted with 

 the clear yellow of the upper surface. The colors of the shell fade 

 very readily. I suspect that Pfeiffer's var. /3 having a white shell, 

 is founded upon a bleached example. 



The anatomy is as in typical Cochlostyla. 



Subsection 3. COCHLODRYAS Martens, 1860. 



Cochlodryas MTS. in Albers, Die Hel. (2d edit.), p. 176, (Type, 

 C. polychroa). SEMPER, Reis. Landmoll., p. 198. Poecilus ALB. 

 ms., preoc. 



Elevated, vividly colored shells, lacking hydrophanous cuticle, 

 and with a distinct stitural band which is generally white. 



The Madagascar species H. viridis Dh. has been included here, 

 but its place is in the vicinity of Ampelita (q. v.) 



C. FLORIDA Sowerby. PI. 38, figs. 70, 71, 72, 73. 



Imperforate, solid, globose- elongated ; ground-color grass-green 

 (sometimes olive), having a very narrow white band at the suture, 

 and frequently some brown bands, of which one is below thesutural 

 white line, one at the columella, and two encircle the body-whorl 

 near the middle. Some or all of these brown bands are often lack- 

 ing. 



The surface has light growth-lines, and under a lens faint fine 

 spiral impressed lines are seen on the upper whorls. The grass- 

 green or olive ground color fades into white or sometimes pink on 

 the earlier whorls. Whorls nearly 6, the last scarcely deflexed in 

 front. Aperture white within, oblique; lip reflexed, white; col- 

 umella subvertical, slightly arcuate. 



Alt. 37, diam. 29 mill. 



Alt. 36, diam. 26 mill. 



12 Mindoro, Philippines. 



