TROCHOMORPIIA. i 



suture bordered with a depressed and well-defined narrow margin, 

 obliquely striated by growth-lines abo\e and below, last whorl 

 compressed at the margin and acutely keeled; aperture very 

 oblique, lip slightly thit-kened. 



" Maj. diani. 14 millim., height 4| millim., width of umbilicus 

 o millim.'' {Fulton.) 



Hah. Andaman Islands : Port Blair. 



9. Trochomorpha bicolor, Martens. 



Trochfimorpha bicolor, Martens, Moiiatsber. Kon. Akad. Wiss. 



ileiliu, 18G4, p. 267 ; ibid., Preuss. Exp. Ost-Asien, Zool. Theil, ii, 



1867, p. 252, pi. 13, fig. 2; Nevill, lland List, ii, 1878, p. 57. 

 Naniiia ( Videna) bicolor, Miirch, Jouru. Concliyl- 1876, p. 356. 

 Helix ( Trochomorpha) bicolor, Tryou, Man. Concli. ser. 2, iii, 1887, 



p. 82, pi. 16, figs. 83-85. 

 Hiscns bicolor, Uodwin-Austeu, Proc. Malac Soc. London, i, 1895, 



p. -2Sr,, pi. 10. tig. 3 (anatomy) ; ibid., P. Z. S. 1895, p. 442. 

 Trochomurplia ( Videna) bicolor, PfeiHer &; Clessin, Nonieuel. Ilelic. 



Viv. 1881, p. 83; Wiegmann, Abh. Senck. Naturf. Ges. xxiv, 



1898, p. 419, pi. 27, figs.'l-18 (anatomy). 



Original description : — " Testa modice umbilicata, depresse 

 conica, carinata, striatula, nitida, supra lineis spiralibus subtilibus 

 sculpta, castanea, zona suturali, carina et regioue umbilicali 

 albidis ; spira altitudine varians ; aiil'r. 51-6, convexiuscuii, 

 ultimus peripheria cariuatus et basi pro])e umbilicum subangulatus, 

 antice baud descendens ; apertura diagonalis, securiformis ; peri- 

 stoma rectum, acutum, margine basali arcuato. 



" Diam. maj. 13, min. 12, alt. 5-6, apert. long. 5, lat. 4 mill."' 

 Hah. Nicobar Islands : Teressa and Katchal {lioejjstorf ) ; 

 I'reparis Island (var.) (Wood- Mason) ■ Malaysia : Sumatra, 

 Borneo, Lombok. 



10. Trochomorpha iopharynx, March. 



JS'anina {Videna) iopharynx, Miirch, Journ. Conchyl. 1876, p. 356. 

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



Original description'. — " T. depressa, late umbilicata, brunnea, 

 linea, suturali subtilissima, alba ; stria) incrementi irregularis, 

 rudes, prsesertem superue ; labio crassiusculo, faucibus violascen- 

 tibus, iridescentibus. 



" Diam. maj. 16 millim. ; diam. min. 14; alt. 8." 



Hah. Nicobar Islands ; Katchal {Roepstorpf). 



Based on a single specimen. Mijrch states that Troclioniorpha 

 iimorensis. Martens, gives a good idea of this species, but that the 

 figure given by von Martens (Ost-As. pi. 13, fig. 6) shows a mucli 

 narrower umbilicus. 



11. Trochomorpha lardea, Martens. 



Helix zolli/tfjeri, Mousson {non Pfeiffer), Zollinger, Natuuilc 

 Tijdschr. Nederl. Indie, xxi, 1860, p. 317 (noni. nud.). 



