COXCIIOLOGV. 



175 



acce])tcd with extreme caution, as it is the minority -n-ho are thus gif 

 is ditfioult to ima;4nc the precise utility of a structure (that is, quoad auy eltVct 

 it may have in the preservation of the species), which is wholly exceptional, and 

 not found to he essential to the woU-heing of the vast majority. 



Plectopylis acuatina, Gray. Farm Caves, Maulmaiu. 



P. reperctinsa, Gould {fide G.-Austen). Tavoy. Mergui. 



„ AXDERSONI, W. T. Jil. 



,, ANGUINA, Gould. 



,, - BRACHTDISCUS, God.-Aust. 



,, JiUACHTI'LECTA, B. 



,, CYCLASPIS, B. 



,, DEXTRORSA, li. 



,, Kabenorcm, W. T. B1. 



,, plkctostojia, b. 



Eeddeni, W. T. B1. 



PERARCTA, W. T. Bl. 



,, psEUDOPiris, W. T. Bl. 



,, EEFUGA, Gould. 



P. li'iophi.1, B. 



,, SnANE.NSIS, Stol. 



p. irilamcUurin, God.-.\ust. 

 Plectrotropis Akouktounijexsis, Theob 

 ,, Ar.\kaxexsis, Theob. 



,, BOLUS, B. 



,, HEMIOPTA, B. 



,, HUTTONI, Pfr. 



,, Oldhami, B. 



,, PANSA, B. 



,, Pegitexsis, W. Bl. 



,, PERPLAXATA, NcviU. 



,, Pdayrei, Theob. 



,, PILIDION, B. 



,, ROTATORIA, V. d. Buscll. 



,, siMiLARis, Fer. 



,, SCALPTinUTA, B. 



,, SCENOMA, B. 



,, TRienoTROPis, Nev. 



,, ZOROASTER, Thcob. 



Semicoentj bifoveatum, B. Therapon Hill, Tenasserim Valley. 



A single adult shell was all that I found of this rcraarkalile form (W. T.). 



Ja.viea codonodes, Pfr. Nicobar Islands. 



Teacitia anserixa, Theob. Slian States. 



,, CATAST03IA, W. BL Pousi iu Yunan. 



,, procdmben's, Gould. 



delibrata, B. 



,, GABATA, Gould. 



JI. Mirguiensis, Phil. 

 ,, Helferi, B. Andamans. 



,, Meeguiensis, Pfr. Maulmain. Tenasserim. 



,, TROcnALiA, B. Andamans. 



R. Bignhyi, Tryon. 



A peculiar type of shell, very different from T. fallacinna, next to which it is 

 placed in Nevill's Hand-list. 



Ganesella capitium, B. Pegu and Upper Burma; also Bengal. 



G. hariola, B. 



This rare shell is found on the ' SJiah lew,'' PJnjUaiilhiis emhlica, L. (W. T.). 



Yunan. 



Tavoy. Damathat Caves. 



Moolyit Hill, east of Mauluiain. 



Near Maulmain. 



Damathat and Kaugun Caves. 



Phaie-than Hill, Tenasserim Valley. 



Heuzadah District. 



Arakan. Khasi and Naga Hills. 



Prome. Tliayet-myo. 



Mya-leit doung. Ava. 



Tha^-et-myo. 



Akouktoung. Kwaydouk. 



Upper Sahveen Valley. 



Akouktoung on the Irrawaddy 11. 



Arakan Hills. 



Irrawaddy Valley. PouseCj Y''unau. 



Andamans. 



Irrawaddy Valley. 



Irrawaddy Valley. 



Irrawaddy Valley. 



Pegu. 



Mimlioo, Yunnan. 



Ava. 



jVIaulmain. 



Irrawaddy Valley. 



Irrawaddy Valley. 



Irrawaddy Valley below Ava. 



JIaulmain. 



Irrawaddy 2nd defile. 



Prome. Ava. Tsagain. Manwyne. 



Irrawaddy Valley. 

 Maulmaiu. Tavoy. 



Tenasserim. 



