1870.] Descriptions of some new land shells. 399 



Diplommatina scalaroidea, n. sp. PI. xviii, Fig. 5. 



Dipl. testa ovato turrita, sinistrorsa, albida, solidula, non rimata, 

 apice subobtusa ; anfractibus 7, convexis, sutura profunda junctis, an- 

 tepenultimo latissimo, penultimo supra aperturam sensim constricto ; 

 anf. prirais duobus ad apiceni lsevivgatis, ceteris costulis transversis, 

 sub-oliquis, distantibus, filiforrnibus ornatis, interspaciis politis; aper- 

 tura late ovato-rotundata, labio lateraliter incrassato, supra producto, 

 adnato, medio tenuissimo ; columella plica valida et infra earn in- 

 cisione profunda instructa ; labro duplici, incrassato, paulo dilatato, 

 intus lsevi, extra paulo reflexiusculo, prope medium insinuato. Alt. 

 testae 0.2, lat. max. 0.1 ; alt. apert. .07, lat. apert, circ. .06. 



A very marked type of the sinistrorse Diplommatince, somewhat 

 allied to the Assamese D. Jaintiaca, Gr.-A u s t e n, but readily distin- 

 guished from it by its more turreted shape, and by the deep incision 

 below the columellar fold. 



Habitat : Mandalay, regno Burmanico. 



Spieacultjm Gokdoni, Bens.? PI. xviii, Fig. 6. 



Opisthoporus Gordoni, Benson, Ann. and Mag. nat. hist. 1863. 



Testa planorbulari, late umbilicata ; anfractibus 5, depressiuscule 

 teretibus, sutura profunda junctis, transversim minute striolatis et 

 rugis nonnullis tenuibus spiralibus notatis ; ultimo prope aperturam 

 sensim descendente, supra gibbsulo, tubulo ab apertura modice 

 (circiter 4 m. m.) distante et postice curvato instructo, ad aperturam 

 breviter soluto ; colore albida, strigis castaneis latiusculis, fulgura- 

 tim transeuntibus, et ad peripheriam ult. anf. fascia castanea 

 dentata interruptis ; epidermide cornea, rugulose striata ; apertura 

 obliqua, sub-circulari, perist. duplici, interno laevi, supra paulo 

 emarginato, externo expanso et reflexiusculo, alato, ala intus 

 excavata, angustatim in anf. penultimum ascendente et adnata. 

 Diam. maj. .91, min. .75, alt. .27, apert. .27 unc. 



Habitat : valle " Sittonug" prope Tonghu, teste F. M a s o n. 



This fine species differs from S. Avanam, Blanf., (which it 

 somewhat approaches in size), in the peculiarly deflexed last whorl 

 towards the mouth, and in its greater volution, the last whorl being 

 at the aperture slightly detached from the previous one. The wing 

 too nearly lies in the plane of the aperture, and very little inclines 



51 



