158 BURMA, ITS PEOPLE AXD PRODUCTIOXS. 



Family Vermetidae. 



Foot cylindriral, not serving for locomotion. Operculum horny, circular, multi- 

 spiral (or wanting). Shell tubular, irrregularly twisted, or only regular when young. 



*.SpiKOGLmirs ooNTRiitrrs, Morch. 



This shell is by some classed as an Annelid. 



Family Onustidse. 



Foot small, cylindrical, nsed for jumping, not walking. Operculum large, homy, 

 subannular. Right half free, nucleus lateral, de.xtral. Muscular sear sinistral, semi- 

 lunar. Shell trochiform, with foliaceous margin and fragments of stone and shell 

 attached near the suture. The animal scrambles along over the rough ground like 

 Stromlus. 



OxTJSTUs INDICTS, Rccve. 



XeSOPHOKA SOL.iUIOII)ES, Recvc. 



The ' carriers ' inhabit deep water. Each species appears to have its own 

 peculiar method of collecting the fragments of stones and shells with which it orna- 

 ments its shell, and each uses its own peculiar materials. The agglutinated fragments 

 are so arranged as not to project downwards and impede the progress of the animal. 



Family Calypti'seidae. 



Radula winged in front. Teeth in seven series. Tentacles short, with the 

 eyes on tuberosities on their outer bases. Foot flat, expanded. Operculum none. 

 Shell patelliform, with an internal shelly appendage. 



*CfiUCiBirLUH ESTixcTOEruM, Lam. 



* ,, FASTIOIATUM, Gould. 



*CEEPiDirLA UNGuiFORMis, Lam. 



* ,, scABKis, Reeve. 



Family Capulidae. 



Eadula and teeth, eyes and tentacles, as in Calyplrffidm. Foot folded on itself, 

 anteriorly thin and strap-slia])ed, posteriorly thick, orbicular and concave. Operculum 

 none. The egg-cases in tliis family are membranous, and form a tuft in front of the 

 foot, under the neck. 



*CAPtiLTTS ArsTEAiis (?), Lam. 

 Amaithea AirsTEALis, Lam. Andaraans. 



Family Ampullaridse. 



Left gill rudimentary. "Mantle cavity with a large pulmonary sack on each side. 



"Although distinct gills exist, the respiratory cavity is very large and partly 

 closed, so as to enable these animals to live a long time out of water ; in fact they 

 appear to be truly amphibious, and to be enabled to survive a long drought, and 

 have been known to revive after having been kcjit several years out of water" 

 (Adams). 



Ampitllahia apehta, Phil. Pegu. 



A. saxea, Reeve. 

 ,, coNicA, Gray. 



A. paludinoides, Phil. 

 ,, MAUHA, Reeve. 



,, Theobaxdi, Hanley. Martaban and Shan states. 



