336 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



on the base. There is a conspicuous broad light zone at the periph- 

 ery, which is well rounded. The peristome is very dark brown. 



The elongate, almost conic form, the large size, rounded periphery, 

 and very dark peristome are its distinctive characters. 



Remarks. — Lesson gives 3 pouces as the height of the shell, which 

 is equivalent to 81.21 mm; its greater diameter is said to be 21 lignes 

 ( = 47.38 mm), while the height of the aperture is 19 lignes ( = 42.86 

 mm) ; diameter of aperture, 14 lignes ( = 31.58 mm). 



Our shell, U.S.N.M. No. 256076, has 6.1 whorls, and measures: 

 Height, 74.6 mm ; greater diameter, 51.5 mm ; height of aperture, 41.4 

 mm; diameter of aperture, 29.6 mm. 



COCHLOSTYLA RUFOGASTER BANAHAOANA, new subspecies 



Plate S5, Figure 4 



1891. Cochlostyla ryfogaster Hidalgo. Obras Malacologicas, p. 373, in part. 



Shell broadly ovate with a decided angle at the periphery of the 

 last whorl, which may or may not have a yellowish spiral band when 

 denuded of its periostracum. The race is nearest to Cochlostyla 

 rufogaster montalbana, but differs from it by having the periphery 

 much more angulated. The interior of the aperture and peristome 

 is also much darker. 



Specimens exarmdned. — The type, U.S.N.M. No. 255968, was col- 

 lected by myself at Majayja}*, Santa Cruz Province, Luzon. It has 

 6.1 whorls, and measures : Height, 73 mm ; greater diameter, 52 mm. 

 I have additional immature specimens from the same general region, 

 which agree with the type as far as parallel growth and marking are 

 concerned. 



This may be the shell that Hidalgo reports from Lucban, a locality 

 also in the Mount Banahao region. 



COCHLOSTYLA RUFOGASTER TOPPINGI, new subspecies 



Plate 85, Figure 3 



This is the giant race that occupies Mount Maquiling in Laguna 

 Province, Luzon. It is very elongate-ovate in shape. The three 

 specimens before us all lack the light peripheral zone when the 

 periostracum is removed. The periphery is feebly angulated. The 

 peristome is very dark chocolate-brown and the columella is axially 

 streaked with brown. The interior is dark bluish pearly gray. 



Specimens examined. — The type, U.S.N.M. No. 310514, was col- 

 lected by LeRoy Topping at Mount Maquiling. It has 7 whorls, 

 and measures: Height, 91.8 mm; greater diameter, 56 mm. Another 

 specimen, U. S. N. M. No. 311334, from the same locality, collected 



