200 COCHLOSTYLA-ORTHOSTYLUS. 



whorls purple. Hydrophanous cuticle forming conspicuous cream- 

 white and rusty-brown obliquely longitudinal ragged stripes. 



Spire decidedly pyramidal, elevated, rather slender. Whorls 

 nearly 7, the last indistinctly angular at the periphery, at times 

 somewhat malleated, the indentations large and shallow. Aperture 

 quite oblique, blue-white inside; peristome black-brown, well ex- 

 panded. Columella vertical. 



Alt. 71,diam. 43 mill. 



Alt. 45, diam. 29 mill. 



Is. Catanduanes; Prov. Tayabas, Luzon. 



B. imperator PFR.. P. Z. S. 1848, p. 110 ; Monogr. ii, p. 533 ; 

 Conchyl. Cab. Bui., p. 158, t. 46, f. 1, 2. REEVE, Conch. Icon. f. 

 183. Cochlostyla imperator HID., Journ. de Conch. 1887, p. 163; 

 Obras Malacol. i, t. 65, f. 1. 



A beautiful species, boldly painted with cream-white longitudinal 

 stripes. From the province of Tayabas, Luzon, we have a variety 

 scarcely half the size of typical examples (fig. 44.) 



C. PITHOGASTER Ferussac. PI. 40, figs. 2, 3, 4, 5. 



Imperforate, oblong-conic or ovate-conic, solid. Ground-color 

 chocolate-black on the body-whorl, chestnut on the next earlier, yelloiv- 

 ish brown on the next, the earlier 2 or 2J whorls dark blue-purple. 

 Hydrophanous cuticle uniformly distributed or slightly streaked 

 obliquely, of a drab or olive-slate color, varying from dark to rather 

 light. 



Spire high-conoidal, apex very obtuse. Whorls 6-6 i, the last a 

 trifle deflexed in front. Aperture oblique, white inside ; peristome 

 reflexed, inwardly flesh-pink, edged with black-brown ; columella irreg- 

 ularly arcuate, flesh-pink, generally not perceptibly truncated at 

 base. 



Alt. 61, diam. 40 mill, (typical form.) 



Alt. 57, diam. 47 mill, (obese specimen.) 



Alt. 50, diam. 33 mill, (small specimen.) 



Camarines, Luzon; Alabat ; Masbate and Marinduque, Philip- 

 pines. 



H. pithogaster FER., Hist. t. 108, f . 3 ; t. 110, f. l-3.Bulimus 

 pithogaster PFR., Monogr. ii, p. 4; Conchyl. Cab. p. 169, t. 51, f. 1. 

 Bui. pythogaster REEVE, onch. Icon. Bui. t. 1, f. 26. Cochlo- 

 styla ptthogastra SEMPER, Reisen, p. 201, t. 13, f. 12 (anatomy). 

 C. pithogaster HIDALGO, Journ. de Conch. 1887, p. 163; Obras 



