502 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Mr. de Mesa has transmitted to us also a splendid series of speci- 

 mens from Mount Sapol, which are referable to Cochlostyla aspersa 

 melanogaster (Morch), and has sent also a fine lot of a huge subspecies 

 that I am calling Cochlostyla (Chrysallis) aspersa lunai, collected at 

 Calamintao, on the west slope of Mount Halcon. This in some 

 respects suggests Cochlostyla (Chrysallis) rollei but has always a dark 

 tip and ranges with this species rather than with rollei. 



Another race discovered by Pedro de Mesa I am calling Cochlostyla 

 (Chrysallis) aspersa juani, which is the smallest of the races so far 

 discovered and comes from Camorong, Municipality of Abra de Hog, 

 Mindoro. 



In addition to these older forms, whose names I am salvaging, there 

 are several additional recognizable races that are elongate-ovate in 

 form with the base more protracted than in the other races. One of 

 these was gathered by Colonel Mearns on the slopes of Mount 

 Halcon. I have named this Cochlostyla (Chrysallis) aspersa edgari. 

 Another, collected by Mr. de Mesa at Abra de Hog, I have named 

 Cochlostyla (Chrysallis) aspersa ilogana, and a third, also collected 

 by Mr. de Mesa on Mount Calavite, I call Cochlostyla (Chrysallis) 

 aspersa calavitana. Still another I am calling Cochlostyla (Chrysallis) 

 aspersa binuangana, from Binuangan, Muncipality of Paluan, north- 

 west Mindoro. 



The species may be defined as follows: 



Shell varying in form from ovate to elongate-ovate. The base may 

 be short and well rounded or protracted and less rounded. The 

 nuclear whorls are always dark. There is usually between the nucleus 

 and the last whorl a lighter turn or more, the last whorl being again 

 darker than the preceding whorls. The shells are covered with a 

 moderately thick periostracum, which may be mottled, streaked, 

 fulgurated, spotted, and blotched with various shades of buff, yellow, 

 or even orange. The base in some of the races is darker than the space 

 between the summit and the periphery of the last whorl. The aper- 

 ture varies from white to bluish white within, while the peristome 

 ranges from pale chocolate to almost black with an azurite iridescence. 

 The inner margin of the columella is usually white at its insertion, 

 though in some instances this almost disappears. The nuclear whorls 

 vary slightly in number, but they are never greatly removed from 

 three turns. The first nuclear whorl is smooth, while the last shows 

 the postnuclear sculpture, the intermediate elements being a grada- 

 tion. The postnuclear whorls are moderately rounded, appressed at 

 the summit, and almost smooth, being marked with somewhat irregu- 

 lar incremental lines and, in some of the races, indications of spiral 

 striations. In addition the fine crisscross sculpture characteristic of 

 most Cochlostylas, crossing the lines of growth obliquely, both pro- 

 tractively and retractively, is present here. The aperture varies from 



