452 REV. A. H. COOKE ON [May 17, 



8. Orthostylxjs. 



Luzon, 20 : leucophsea, Sby., woodiana, Lea (also Alabat), 

 porteri, Pfr. (also Polillo), lignaria, Pfr., rufogaster, Less., 

 macrostoma, Pfr., vidali, Hid., bicolorata. Lea (also 

 Alabat), polillensis, Pfr. (Polillo only), supra-badia, Semp., 

 juglans, Pfr., mix, Semp., monozona, Pfr., conciuna, Sby., 

 flammula, Semp., turris, Semp., grandis, Pfr., turhinoides, 

 Brod., amalise, W6\\t, pithog aster. Per. (also Alabat). 



Catanduanes, 3 : imperator, Pfr., codonensis. Hid., turbinoides, 

 Brod. 



Marinduque, 4 : marindiiquensis, Hid., bicolorata, Lea, philip- 

 pinensis, Rve., villari, Hid. 



Samar, 2 : phi/ippinensis, Rve., pithogaster. Per. 



Leyte, 1 : turbinoides, Brod. 



Panay, 3 : turgens, Desh., bicolorata. Lea, sarcinosa, Per. 



Cebu, 4 : pithogaster. Per., faunus, Brod., sarcinosa. Per., 

 daphnis, Brod. 



Bohol, 2 : gilva, Sby., daphnis, Brod. 



Mashate, 3: pithogaster, Fer., faunus, Brod., ticaouica, Brod. 



Siquijor, 1 : daphnis, Brod. 



This subgenus is largely developed in Luzon and the central 

 islands, but entirely absent from Mindoro and Mindanao. Several 

 species are of wide distribution, e. g., pithogaster (Luzon, Samar, 

 Cebu, Masbate), daphnis (Cebu, Bohol, Siquijor), turhinoides (Luzon, 

 Catanduanes, Leyte). Cochl. rustica, Mouss., from Java, must be 

 an Amphidromus : C. viridis, Desh., from Madagascar, is a Helix. 



9. Phengus. 



Luzon, 2 : romblonensis, Pfr. (Calaguas only), opalina, Sby. 

 Marinduque, 7 : romblonensis, Pfr., quadrasi. Hid., cossman- 



niana, Cr., simplex, Jon.,eburnea, Rve., moUendorflS, Hid., 



subcarinata, Pfr. 

 Romblon, 1 : simplex, Jon. 

 ^ Burias, 1 : conciuna, Sby. 



This subgenus has its headquarters in Marinduque, and appears 

 to have spread only to the islands in the immediate vicinity. 



10. Canistrum. 



Burias, 2 : ovoidea, Lam., stabilis, Sby. 

 '^Masbate, 1 : ovoidea, Lam. 



A small but well-marked subgenus of correspondingly well-marked 

 distribution. Its true limitations have been indicated above. 



1 To these should perhaps be added cincinniformis, Sby., Luban, ou the 

 authority of a private collector, but I do not feel justified in placing it in the 

 test. Pfeiffer strangely classifies the species in Cochlodri/as. 



^ Ilocos Sur (N. Luzon) is given as a habitat for halmwides. Sby., by a private 

 collector, but the authority is hardly sufficient, 



