COCHLOSTYLA-CALOCOCHLEA. 1 45 



The shell resembles the group of C. latitans, C. cryptica, etc., in 

 sculpture and shape of the mouth, but it is in coloring and shape 

 of the spire more allied to C. coronadoi, etc. 



Color-var. ferruginea Lea. (pi. 52, fig. 27). Unicolored, brown- 

 ish. Lea included the true cailliaudi also in his diagnosis, but the 

 name may be retained in a restricted sense for the pale reddish- 

 brown form. 



Color-var. (pi. 52, fig. 26). Shell smaller, with accessory bands 

 at suture and columella. 



C. MICROSPIRA Pfeiffer. PI. 53, figs. 34, 35, 36. 



Imperforate, solid, globose-depressed ; surface smooth, with 

 delicate growth-lines, the spiral striation almost or entirely obsolete, 

 the last whorl sometimes slightly malleated. Yellow, with three 

 dark chestnut or purple bands, one at the narrowly white-margined 

 suture, one at the periphery, and a third surrounding the columella. 

 No traces of hydrophanous cuticle. 



Spire short, obtuse ; sutures superficial ; whorls 4*, the last a little 

 descending in front. Aperture large, white inside and often show- 

 ing the bands; lip reflexed, white, frequently narrowly edged with 

 brown ; columella oblique, white, subtruncate below. Earlier 

 whorls white or reddish. 



Alt. 37, diam. 42 mill. 



Alt. 35, diam. 49 mill. 



Philippines. 



H. mlcrospira PFR., P. Z. S. 1853, p. 127 ; Mouogr. iv, p. 213. 

 REEVE, Conch. Icon., f. 1268. 



A large and solid trifasciate species, somewhat allied to C.zonifera 

 var. dree, but decidedly heavier, and of a different tone of color. 

 The variations in banding are shown by the figures, selected from a 

 large suite of specimen?. 



C. IIKMISPH^RION Pfeiffer. PI. 54, figs. 45, 4(>. 



Imperforate, semiglobose, solid, obliquely striated, and under a 

 lens seen to be very closely spirally sculptured ; shining, buff, with 

 chestnut-tawny bands. Spire convex, apex obtuse. Whorls 4i, a 

 little convex, rapidly increasing, the last scarcely descending, the 

 periphery obtusely angled and sometimes irregularly obliquely 

 malletited-plicate ; base subplanulated. Aperture oblique, lunate- 

 oval, whitish within; columella somewhat sloping, wide, basal mar- 

 10 



