4 TKOCHOMOBPHID^E. 



ultimo ad peripheriam acutissime carinato, subtus planiusculo ; 

 apertura oblique subquadrata, margins acuto. 



" Diam. maj. 12, inin. 10 J, axis 4 mill." 



Hob. Sikkim : Darjeeling (Trotter, StoliczJca fy Mainwaring\ 

 India : Sinkip Island ( Wood-Mason) ; Calcutta (StoliczJca 6f Nevill) ; 

 Sibsagar (Peal) ; Khasi Hills and Dafla Hills, Assam (Godiuin- 

 Austeri) ; Naga Hills (CJiennell); Cherrapoonjee, Assam (native 

 collector, my collection). Burma : Arakan Hills (Kurz) ; Pegu 

 (StoliczJca). Straits Settlements : Penang (StoliczJca) ; Salang 

 (Weber); Kwala Aring, Kelantan, Malay Peninsula (Skeat Ex- 

 pedition). 



Nevill records an unnamed variety of this species (collected by 

 Wood-Mason) from South Andaman Island (Hand List, i, 1878, 

 p. 56). Lt.-Col. (rod win- A listen, who received a specimen from 

 the same collector, believes this to be an immature T. sanis(P. Z. S. 

 1895, p. 449). 



2. Trochomorpha ceryx, Benson. 



Helix eery x, Benson, A.M. N. H. ser. 3, iii, 1859, p. 184 (reprint, 



p. 1). 

 Helix (Trochomorpha) caryx (err. typ.), Tryon, Man. Conch, ser. 2, 



iii, 1887, p. 75. 

 TrochomorpJia caryx, Pilsbry, Man. Conch, ser. 2, ix, 1893, p. 4. 



Original description-. " Testa perforata. turbinato-conica, tenui, 

 nitidula, oblique striatula, liris pluribus remotis, striisque con- 

 fertissimis interpositus spiralibus sculpta, translucente, albida, 

 fasciis duabus labis fuseis, superior! prope suturam, altera infra 

 peripheriam, ornata ; spira attenuato-conica, apice obtusiusculo ; 

 anfractibus 4 convexiusculis, ultimo medio carinato ; apertura 

 obliqua, rotundata, peristomate tenui, acuto, margine columellari 

 verticali anguste reflexo, perforationem subtegente. 



" Diam. maj. 6, min. 5, axis 5 mill." 



Hob. Burma : Pie Than, Tenasseriin. 



3. Trochomorpha Mlleana, Morcli. 



Nanina ( Videna) billeana, Morch, Journ. Conchyl. 1872 ; p. 310; ibid., 



1876, p. 355. 

 Discus billiana, Godwin-Austen, P. Z. S. 1895, p. 442. 



Original description'. "T. substantia dura, unicolor fusca, per- 

 spective umbilicata, depressa, subdiscoidea, acutissime carinata ; 

 striae increment! obsoletse, lineae spirales vix dete^endas ; supra 

 parum elevata ; sutura linearis, expansa ; anfra. 5| planiusculi, 

 pone suturam (vel aciem) excavati, ultimus vix descendens, basi 

 convexiusculus. Apertura rhombea, peristomate subobliquo, 

 margine subincressato, labro obliquo, obsolete sinuato. 



" Diam. maj. 13, min. llj, axis 4 mill." 



Hab. Nicobar Islands : Nancowri, Great and Little Nicobar 

 (Reinhardt) ; Camorta (Roepstorff). 



The form collected at Camorta is distinguished by Morch as 



