TROOHOMOEPHA. 7 



suture bordered with a depressed and well-defined narrow 7 margin, 

 obliquely striated by growth-lines above and below, last whorl 

 compressed at the margin and acutely keeled; aperture very 

 oblique, lip slightly thickened. 



*' Maj. diam. 14 millim., height 4^ millim., width of umbilicus 

 5 millim/' (Fulton.) 



Hob. Andaman Islands : Port Blair. 



9. Trochomorpha tricolor, Martens. 



Trochomorpha bicolor, Martens, Mouatsber. Kon. Akad. "Wiss. 



Berlin, 1864, p. 267 ; ibid., Preuss. Exp. Ost-Asien, Zool. Theil, ii, 

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

 Nanina ( Videna) bicolor, Morch, Journ. Conchyl. 1876, p. 356. 

 Helix ( Trochomorpha) bicolor, Tryon, Man. Conch, ser. 2, iii, 1887, 



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

 Discus bicolor, God win- Austen, Proc. Malac Soc. London, i, 1895, 



p. 285, pi. 19. fig. 3 (anatomy) ; ibid., P. Z. S. 1895, p. 442. 

 Trochomorpha ( Videna) bicolor, Pfeiffer & Clessin, Nomencl. Helic. 



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



1898, p. 419, pi. 27, figs. 1-18 (anatomy). 



Original description : " Testa modice umbilicata, depresse 

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

 sculpta, castanea, zona suturali, carina et regione umbilicali 

 albidis ; spira altitudine varians ; anf r. 5|-6, convexiusculi, 

 ultimus peripheria carinatus et basi prope umbilicum subangulatus, 

 aatice haud 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." 

 ffab. Nicobar Islands : Teressa and Katchal (Roepstorf) ; 

 Preparis Island (var.) (Wood-Mason^ ; Malaysia : Sumatra, 

 Borneo, Lornbok. 



10. Trochomorpha iopharynx, Morch. 



Nanina ( Videna) iopharynx, Morch, 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 ; strias increment! irregularis, 

 rudes, prsesertem superue ; labio crassiusculo, faucibus violascen- 

 tibus, iridescentibus. 



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



ffab. Nicobar Islands ; Katchal (Roepstorpf). 



Based on a single specimen. Morch states that Trochomorpha 

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

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

 narrower umbilicus. 



11. Trochomorpha lardea, Martens. 



Helix zollinqeri, Mousson (non Pfeiffer), Zollinger, Natuurk. 

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



