208 COCHLOSTYLA-ORTHOSTYLUS. 



This large species has the contour of C. woodiana Lea (not Pfr.),, 

 but is differently colored and the lip is narrower. It is even more 

 allied, probably, to the narrower, more pyramidal C. bicolorata Lea* 



Pfeiffer's B. monozonus (pi. 45, fig. 47) is merely a rather small 

 example, but I have seen specimens still smaller. Localities for 

 these small specimens are : Santa Ana, prov. Manilla ; Lucban 

 prov. Tayabas ; San Rafael, prov. Bulacan, Luzon. 



C. MACROSTOMA Pieiffer. PL 61, fig. 20. 



Imperforate, ovate, rather solid. Rufous-black, the apex paler ; 

 covered with a brown hydrophanous cuticle, encircled by black 

 lines. Whorls 6, a little convex, the last about equal to the spire 

 in length. Columella vertical, dilated, somewhat thickened in the 

 middle, its inner part dark brown, outer lip strongly arcuate. 



Alt. 61, diam. 39 mill. (Pfr.) 



Mts. near Balanga, prov. Bataan, Luzon, Philippines. 



B. macrostomus PFR., P. Z. S. 1842, p. 152 ; Monogr. ii, p. 24 ; 

 Conchyl. Cab., t. 50, f. 4, 5. REEVE, Conch. Icon., f. 1. Cochlo- 

 styla macrostoma HID., Journ. de Conch. 1887, p. 161. 



C. VIDALI Hidalgo. PI. 60, fig. 12. 



Imperforate, ovate, solid, obliquely striated. Under a thin, 

 deciduous hydrophanous cuticle, of a deep purple-brown color. 

 Spire conoid, apex obtuse, concolored, purple ; suture impressed, 

 destitute of spots. Whorls 6, nearly flat, the last about equaling 

 the spire, encircled with a little-conspicuous pale buff band ; base 

 attenuated. Aperture angulate-ovate, moderate, inside livid-white ; 

 peristome narrowly reflexed, edged with dark purple, margins dis- 

 tant, joined by a thin, wide callus ; columellar margin deeply intorted, 

 quasi-truncate, purple-white ; basal margin narrowly rounded, form- 

 ing an angle where it joins the columella, outer margin becoming 

 thin toward its insertion. 



Alt. 67, diam. 40 mill. ; apert. with perist., 37 mill, long, 26 

 wide. (Hid.') 



Galiano, district of Benguet, Luzon. 



C. vidali HID., Journ. de Conch. 1887, p. 162, t. 7, f. 2. 



This species is truly intermediate between C. rufogaster and C. 

 macrostoma. It differs in being more ovoid, less conoidal; the whorls 

 more swollen ; the spire is more obtuse and darker than the rest of 

 the shell, not lighter, as it is in the two allied species. The cuticle 



