1892.] THE LAND-MOLLUSCA OF THE PHILIPPINES. 449 



never as establishing, a locality. The main authorities are the two 

 authors just mentioned, Hidalgo, von Martens, and Dohrn. 

 Hidalgo's work requires special watchfulness, but on the whole his 

 localities are trustworthy. No locality from Pfeiffer has been accepted 

 unconfirmed. 



No especial care has been taken to weed out synonymous species. 

 This would involve another heavy piece of work, and would not 

 materially affect the results arrived at. 



Distribution of the Subgenera of Cochlostyla '. 

 1. Chlor^a. 



Luzon, 6 : benguetensis, Semp., geotrochus, Mollf., hanleyi, 

 Pfr., gmeUiiiana, Pfr., antonii, Semp., hiigeli, Pfr. (all N. 

 Luzon except hiigeli, which occurs also in Central Luzon). 



Marinduque, 2 : anioena, Pfr., 'fibula, Brod. 



Mindoro, 2 : thersites, Brod., constricta, Pfr. 



Cebu, 2 : fibula, Brod., sirena, Brod. 



Mindanao, 1 : sirena, Brod. 



Tablas, 1 ; dryope, Brod. 



Sibuyan, 1 : dryope, Brod. 



Luban, 1 : fibula, Brod. 



This subgenus is widely distributed without being specially cha- 

 racteristic of any island. It is not recorded from the large islands of 

 Leyte and Samar, nor from S. Luzon, which is closely related to 

 them. The true position of the so-called Chlortsa pelewana, Mouss., 

 from the Pelew Islands, cannot be said to be ascertained as yet. 



2. AXINA. 



Luzon, 3 : garibaldiana, D. & S., kobelti, Mollf., schaden- 



bergi, Mollf. 

 Cebu, 6 : magistra, Pfr., zebuensis, Brod., cumingi, Pfr., 



moreleti, Pfr., carbonaria, Shy., phloiodes, Pfr. 

 Siquijor, I : siquijorensis, Brod. 

 The distribution of this subgenus is remarkably broken. It 

 appears to replace Calocochlea in Cebu, and to be replaced by it in 

 all the other islands except Luzon. 



3. CORASIA. 



' Babuyanes, 3 : * elisabethse, O. Semp., * albaiensis, Sby., 



* halichlora, O. Semp. 

 Luzon, 8 : * albaiensis, Sby., psittacina, Desh., erubescens, 



Semp., pudibunda, Semp., livido-cincta, Semp., aurata, 



Sby., irosinensis. Hid., cserulea, Mollf. 



1 A Tery small island, lying quite close to a large one, with but Uttle depth of 

 water between, is regarded, for the present purpose, as forming part of the 

 larger island. 



^ Species italicised are found on more than one island. 



^ Elisabethcs and halichlora from Oalayan I., albaiensis from Camiguin de 

 Luzon. 



' These species may possibly be classified as Calocochlea. 



