1892.] the land-mollusca of the philippines. 453 



11. Hypselostyla. 



Luzon, 2 : daetylus, Brod., nympha, Brod. 



Catanduanes, 1 : daetylus, Brod. 



Marinduque, 1 : nympha, Brod. 



Leyte, 1 : cumelopardalis, Brod. 



Panay, 3 : ' fulgetrum, Brod., nobilis, Rve., pictor, Brod. 



Cebu, 1 : camelopardalis, Brod. 



Bohol, 2 : boholeiisis, Brod., camelopardalis, Brod. 



Busuanga, Palawan, and Balabac, 1 : satyrus, Brod. 



Characteristic of the central group, this subgenus just reaches 

 Luzon and its southern attendant islands, but is entirely absent from 

 Mindoro and Mindanao. Its appearance in Palawan and the 

 Calamianes Islands is remarkable, no other subgenus being repre- 

 sented there. 



12. Chrysalis. 



Mindoro, 5 : aspersa, Grat., mindoroensis, Brod., chrysalidi- 

 formis, Sby., electrica, Rve., antonii, Semp. 



Entirely peculiar to Mindoro. 



13. Prochilus. 



Mindoro, 7 ■ fictilis, Brod., virgata, Jay, porracea, Jay, calobapta, 



Jon., dryas, Brod., larvata, Brod., sylvanoides, Semp. 

 ^ Cuyos, 1 : cuyoensis. 



Not found out of Mindoro and (possibly) the Cuyos Is. 



14. Ptychostyla. 



Luban, 1 : ' cepoides, Lea. 

 Peculiar to Luban ; one species only known. 



15. Pfeifferia. 



Luzon, 1 : micans, Pfr. 



Characteristics of the separate Islands. 



Babuyanes. — This group, which may at a remote time have been 

 connected with Luzon, but now is separated from it by a deep 



1 These three species from Panay, together with satyrus, form almost a group 

 within a group, which is confined to Panay, the Calamianes, Palawan, and 

 Balabac, in none of which islands do the more elongated Hypselostyla occur. 



^ There is no authority but Cuming's for assigning this sp. to the Cuyos Is. ; 

 but as it does not appear to have been discovered anywhere else, there is con- 

 siderable probability that the locality may be correct. 



3 Mollendorff, Ivachr. mal. Gesell. xx. 1888, p. 65. A tablet in the Brit. 

 Mas. has on the back, in Cuming's hand, " Island of Luban, leaves of trees." 

 This locality had never been confirmed until one of von Mollendorif s collectors 

 found the species living on Luban. PfeiiFer classified it as Stylodonta, Tryon as 

 Nanbia ! Semper (Eeisen, II. iii. p. 181) was the first to regard the species as 

 Cochlostyla. He placed it in Calococklea, suggesting, however, that a special 

 group should be formed for so remarkable a shell. 



