COCHLOSTYLA-HYPSELOSTYLA. 29 



Helix pyramidalis SOWB., P. Z. S., 1841, p. 39. Bulimus pyra- 

 midalis PFR., Symb. iii, p. 87 ; Monogr. ii, p. 36. REEVE, Conch. 

 Icon. t. 11, f. 59. Bui. nebulosus PFR., Symb. i, p. 42 ; Monogr. ii, 

 p. 14. REEVE, Conch. Icon. t. 11, f. 58a. 



Fig. 61 is the nebulosus of Pfr. 

 C. FISCHERI Hidalgo. PI. 10, fig. 15. 



Ovate-oblong, thin, pellucid, smooth, corneous-brown; above 

 closely variegated, below interruptedly bifasciate, with an opaque 

 tawny-white cuticle. Spire conoid, apex obtuse. Suture simple ; 

 whorls 5, slightly convex, the last swollen, not descending in front. 

 Aperture ovate, scarcely exceeding one-half the total altitude of 

 the shell, brown inside ; peristome narrowly expanded, bluish-white, 

 the margins joined by a subindistinct callus, right margin regularly 

 arcuate, columellar margin narrow, nearly vertical. (Hid.) 



Alt. 35, diam. 21 mill. 



Penon de Bintuan, Island of Busuanga, Philippines. 



C.fischeri HID., Journ. de Conchyl. 1889, p. 301, t. 14, f. 5. 



* * * 



New Guinea and New Ireland species having the contour of 

 Hypselostyla. 



The generic characters of the following three species, as well as 

 of C. papuensis Hedley (MANUAL vol. vii, p. 190, pi. 58, fig. 97), 

 remain to be discovered. For the present they may be conven- 

 iently grouped here, although the slender, acute apices of these 

 southern forms do not accord well with the obtuse ones of the 

 Philippine Island species. 



C. TRANSLUCIDA Quoy & Gaimard. PL 13, fig. 63. 



Shell narrowly rimate, ovate-pyramidal ; decussated with oblique 

 and concentric striae; rather thin, diaphanous, whitish. Spire 

 pyramidal, apex acute ; whorls 6, flat, the last a little shorter than 

 the spire, angulated at base. Columella nearly straight, somewhat 

 twisted to form a tooth in the middle. Aperture oblique, lunate- 

 oval ; peristome expanded all around, crenulated outside. Alt. 42, 

 diam. 29 ; aperture, alt. 21, width 13 mill. (Pfr.) 



Port Dorey, New Guinea. 



Helix translucida Q. & G. Voy. de 1'Astrolobe, Zool. ii, p. 103, t. 

 8, f. 11-13. DESK, in Lmk. An. s. Vert, viii, p. 121. FER. & 



