] 0| i ( ( )( II LOS TYLA-CORASIA. 



Hidalgo has already (Obras i, p. 147) raised the question of the 

 identity of the H. broderipi of Pfr. and H. broderipi Keeve. They 

 seem to me perfectly distinct; and I have, therefore, restored the 

 .riii-iiia! name given by Broderip to the form figured in the Iconica, 

 which represents Broderip's species. The name is not preoccupied 

 in the genus ( 'ochlostyla. 

 C. CASTA Pfeiffer. PL 25, figs. 37, 38. 



Imperforate, depressed, about equally convex above and below, 

 car mated, striatulate and obsoletely malleated, shining, white under 

 a fim-aremis pale yellowish epidermis; suture linear, chalky-white; 

 whorls 4, nearly fiat, the last obsoletely angled at the suture and 

 below tin- carina ; eolumella short, sloping, excavated ; base sub- 

 tortuous ; aperture subtrapezoidal ; peristome expanded, white, 

 basal margin slightly arcuate, forming an angle with the eolumella. 



Alt. '2:}, greater diam. 47, lesser 38 mill. (P/r.) 



Philippines. 



H. casta PFR., P. Z. S. 1848, p. 110 ; Conchyl. Cab. t. 123, f. 1, 

 L> ; Monogr. iii, p. 206. REEVE, Conch. Icon. f. 86. 



A large form, not yet found by recent collectors. The entire 

 surface of the shell is superficially indented or malleated. 



C. FUELLA Broderip. PI. 24, figs.22, 23, 25 ; pi. 25; fig. 39. 



Imperforate, globose-depressed, carinated at the periphery, thin, 

 white under a very thin, deciduous yellowish cuticle, having a brown 

 band at the peripheral angle, becoming evanescent on the earlier 

 part nf the body-whorl. Surface smooth, very delicately striated, 

 and showing under a lens fine spiral lines on the earlier whorls. 

 future linear, white. Whorls 4, nearly flat, the last carinated, 

 descending a little below the carina at the aperture. Aperture 

 ol>li(|iie. subtrigonal-lunar ; peristome thin, narrowly expanded; 

 eolumella wide, fiat, its inner edge straight, oblique, forming an 

 with the basal margin. 



Alt. lir., greater diam. 31, lesser 26 mill. 



I. -<l<i nil of Camiguing ; Lianga, Rio Salos, Rio Jibon, Pasian, 

 ), Rio Af/tixnn, Itlnnd of Mindanao, Philippines. 



puella BROD., P. Z. S. 1841, p. 45. H. puella PFR. 

 Symb. iii, p. 74 ; Conchyl. Cab. t. 68, f. 3-5 ; Monogr. i, p. 298.- 

 REEVE, Conch, Icon. f. (;<;.- //. (Corasia) puella HIDALGO, Obras 

 Midarol. i, p. 148, t. 21, f. 4. Cochlottyla ( Corona) puella SEMPER, 

 K'-i--ii in Archip. Phil., Landmoll. iii, p. 167. 



