GUDE : LIST OF IIELICOID LAND SHELLS. 47 



Peninsula and Celebes, connecting the fauna with that of India and 

 Burma. Chloritis is generally distributed, providing another coiniecting 

 link with the luollusea of Further India on the one hand, and through the 

 section Salcohat^is in the Ai'U Islands, with the fauna of New Guinea on the 

 other. Albersia and Pajmina range from the Moluccas through the 

 Aru Islands into New Guinea. Rhagada is known only in 8umba, Dana, 

 Flores, and Solor, its extra limital representatives being as far of! as North 

 Australia. Amphidromus (an arboreal genus of bright, conspicuous 

 colouring), here finds its head-quarters, and occurs in most of the islands ; 

 a few oli-shoots occur in Further India. Pseudopartula is known only from 

 Java, Sumatra, and Bc^rneo. FijrocJiilus, a small group, possessing four 

 species, is confined to Halmaheira and Batchian. Gaiiesella is rejD resented 

 by a few species in Sumatra, Java, Borneo, and Celebes, forming another 

 link with the fauna of the Continent of Asia. The presence of Phoenico- 

 bius and Orthostijlus in Palawan and neighbouring islands connects the 

 Bornean with the Philippine fauna, a connection still further evidenced 

 by the occurrence of CalococJdea in Sangir and the Tukan Bessi group. 

 Crystnllopsis occurs in Burn, Goraiii, and the Aru Islands, thence ranging 

 to the Sol(jm(tn Islands. Lastly, I'li pisuina is found in Pcnang, the Saniui 

 group, Borneo, Lombok, and Amboina, its remaining members occurring 

 in India, Ceylon. Philippine Islands, and Japan. 



In the following pages the faunas of the various islands are treated 

 separately ; and for convenience of reference I have added an index to the 

 slanda ; also a Bibliography. 



In concluding this series of ]iapers on the Helicoid Land Shells of Asia, 

 I take the opportunity of expressing my deep obligations to Mr. W. E. 

 Collinge, Mr. H. Wallis Kew, Mr. John Ponsonby, and Mr. E. A. Smith 

 for valuable assistance and suggestions. 



A few new records of habitat based on specimens (from reliable sources) 

 in my own collection are indicated by an asterisk. 



Dyakia smithlania, n.sp. 

 PI. lii, hgs. Irt, 1/^. 



Shell sinistral, rimate. pyranu'dal, finely striated, the stria3 cut into gran- 

 ules by spirals, opaque, lustreless, pale straw-ycll()w ; spire elevatetl, apex 

 acute, suture shallow. Whorls G, flattened above, tumid below, increas- 

 ing slowly at first, last whorl twice as wide as penultimate, subangulate 

 at the periphery, not descending in front, slightly dilated towards the 

 mouth. Two narrow dark brown bands revolve just below the suture, 

 gradually disappearing upwards; at the periphery occurs also a dark 

 brown band, with a narrow, faint one immediately below it ; these two 

 latter are only visible on the body whorl. Aperture oblique, subovate, 

 margins subparallel ; peristome thin, straight, columellar margin slightly 

 reflected over the narrow perforation of the umbilicus. 



