COCHLOSTYLA OF MLNDORO PROVINCE 387 



I am recognizing a number of subspecies or geographic races, which 

 appear to have circumscribed habitats. 



Hidalgo 10 referred Helix infuscata Albers here as a subspecies. I 

 do not agree with him on this point. It is not a member of the Cochlo- 

 styla roissyana complex; nor do I accept his references of this species 

 occurring in the islands of Tablas, Leyte, and Mindanao. These 

 evidently rest upon misidentifications. 



KEY TO THE SUBSPECIES OP COCHLOSTYLA (CALOCOCHLEA) ROISSYANA 



Shell with peripheral keel monacha 



Shell without peripheral keel. 

 Shell dark brown. 



Shell with many bands bartschi 



Shell not with many bands. 



Outer lip very dark subatra 



Outer lip light lutea 



Shell not dark brown. 



Shell orange lutea 



Shell not orange. 



Shell of light ground color. 

 Periostracum pale lemon. 



Dark spiral bands predominating over the light zones. 



cavitala 

 Dark spiral bands not predominating over the light zones. 



roissyana 

 Periostracum not pale lemon. 



Periostracum pale straw color. 



Band at the summit broad manlaysa 



Band at the summit narrow laymansa 



COCHLOSTYLA (CALOCOCHLEA) ROISSYANA MONACHA (Clench and Archer) 



1933. Helicostyla (Calocochlea) roissyana monacha Clench and Archer, Papers 

 Michigan Acad. Sci., Arts, Letters, vol. 17, p. 539, pi. 57, fig. 1. 



"Shell imperforate, globose, rather solid. Nuclear whorl ivory- 

 yellow, which continues onward to the edge of the peristome and 

 becomes slightly tinged with brown. From the nuclear whorl onward 

 a subsutural dark brown band, at first very narrow, but gradually 

 widening; from the first whorl succeeding the nuclear whorl onward 

 a supersutural dark brown band, at first very slight, but rather rap- 

 idly widening until it develops into a strong band above the periphery 

 of the body whorl. Just below the periphery of the body whorl an 

 ivory-yellow band covered most of the way by a thick cartridge-buff 

 zone of hydrophanous cuticle; below the subperipheral yellow band a 

 broad dark brown zone covering most of the base, but interrupted 

 near the columella by another yellowish band, and inside that a dark 

 brown circumcolumellar band. Body whorl suffused by a rather 



"Obras malacologicas, p. 464, 1901. 



