

COCHLOSTYLA-LEYTIA-CALOCOCHLKA. 



Section IV. LEYTIA Pilsbry. 



Im perforate, globose, thin ; whorls few (4), the last angulated at 

 the periphery. Aperture very large, lip simple, a little expanded 

 below ; columella simple, thin, vertical, deeply inserted. Surface 

 spirally striate, having hydrophanous, cream-white bands. 



This section differs from Calocochlea in its thin, bubble-like shell, 

 composed of few whorls ; from Corasia in the possession of hydro- 

 phanous cuticle, and the globose contour. The anatomy has not 

 been investigated. 



C. FRAGILIS Sowerby. PI. 29, figs. 5, 6. 



Imperforate, globose, thin ; light blue-green above the periphery, 

 becoming pinkish-white on the spire, the last whorl having numer- 

 ous narrow interrupted white bands; below the periphery dark 

 green, with two broad straw-colored zones and numerous narrow, 

 broken, whitish lines ; lighter around the center of the base. Sur- 

 face finely spirally striated, obliquely striatulate. Whorls 4, the 

 apex minute, obtuse, brown ; last whorl angulated, not descending 

 in front. Aperture large, oblique ; peristorne white. 



Alt. 21, greater diam. 26, lesser 22 J mill. 



Tanauan, Island of Leyte, Philippines. 



H.Jragilis&cwB.y'P.Z. S. 1841, p. 40. H. (Corasia') fragilis, 

 HID., Obras. i, p. 149, t. 24, f. 8, 9. #". leytensis PFR., Symbols iii, 

 p. 71 ; Conchyl. Cab. t. 42, f. 7, 8 ; Monogr. i, p. 242. RVE., Conch. 

 Icon. f. 55. CROSSE, Journ de-Conchy], xxiii, p. 134, t. 6, f. 3. 1875. 



A bubble-like species, rare in collections. It has an unfinished 

 aspect, even when quite mature. 



Section V. CALOCOCHLEA Hartmann, 1840. 



Calocochlea HARTM., Erd u. Susswasser Gasteropoden der Schweiz, 

 etc., p. 163. Type C. pulcherrimaSovtb., 1. c., pi. 54. Callicochlias 

 AGASSIZ, Nornencl, Zool., 1847. ALBERS, Die Hel. p. 105, et al. 



Imperforate, solid shells, varying from globose to depressed- 

 globose or lens-shaped and carinated. Generally covered with hy- 

 drophanous cuticle, variously patterned. Anatomy as in Cochlostyla 

 generally. 



Under Calocochlea must be placed Axina and a number of other 

 groups which stand too close to one another to be separated as pri- 

 mary divisions of Cochlostyla, although they have a certain systematic 

 value. 

 9 



