COCHLOSTYLA OF MINDORO PROVINCE 



429 



i Average. 



* Greatest. 



8 Least. 



Some specimens seem to be almost white, but even these show an 

 indication of a peripheral and a subsutural green band. 



The name originally proposed by Sowerby is not tenable since it was 

 twice preoccupied, as shown in my synonymy. Sowerby too, and 

 the authors who followed him, confused two species under this name, 

 considering them mere color forms. Hundreds of specimens before 

 me show no intergrades of one to the other and lead me to believe that 

 the banded form, which has been passing under the name Cochlostyla 

 (Cochlodryas) tenera, merits specific separation. This is indicated the 

 more since races of it occur on some of the off-lying islands. I have 

 therefore named the banded shell Cochlostyla (Cochlodryas) mateoi, 

 and of this I recognize a number of races. 



