TKOCHO^IOEPHA. O 



var. /3, and is stated to be of a brown colour, with a thinner shell. 

 The species differs from T. sulcipes principally by the narrower 

 whorls, but the shell is also more solid, the umbilicus is narrower, 

 the keel is sharper owing to the whorls being excavated above 

 and below, while the spiral striae are less numerous and more 

 indistinct. 



4. Trochomorpha frauenfeldi, Zelebor. 



Helix frauenfeldi, Pfeiffer & Zelebor, Verb. K.K. zool.-bot. Ges. 



xvii, 1867, p. 805. 

 Trochomorpha ? frauenfeldi, Frauenfeld, Verb. K.K. zool.-bot. Ges. 



xix, 1869, p. 897. 

 Itotula frauenfeldi, God win- Austen, P. Z. S. 1895, p. 441. 



Original description: " T. perf orata, lenticularis, acute carinata, 

 tenuis, oblique conferte costulato-striato, parum nitida, trans- 

 lucida, cornea ; spira parum elevata, vertice obtuso ; sutura 

 linearis ; anfr. 5 regulariter accrescentes, planiusculi, ultimus noii 

 descendens, infra carinam levissime crenulatam convexus, Isevior, 

 nitidus; apertura obliqua, rhombeo-lunaris ; perist. simplex, 

 rectum, margine basali arcuato, ad insertionem breviter triangu- 

 latim reflexo. 



"Diam. maj. 16, min. 14, alt. 6 mill." 



Hob. Nicobar Islands (Zelebor} ; Great Nicobar (Godwin- Austen). 



5. Trochomorpha galerus, Benson. 



Helix galerus, Benson, A. M. N. H. ser. 2, xviii, 1856, p. 96 ; Hanley 

 & Theobald, Conch. Ind. 1872, pi. 83, figs. 5 & 6. 



Trochomorpha castra, var. galerus, Nevill, Hand List, i, 1878, p. 56. 



Trochomorpha (Nigritella) galerus, Pfeiffer & Olessin, Nomencl. Helic. 

 Viv. 1881, p. 81. 



Helix ( Trochomorpha} yalerus, Tryon, Man. Conch, ser. 2, iii, 1887, 

 p. 75, pi. 14, figs. 2 & 3. 



Original description : " Testa umbilicata, subconoidea-depressa, 

 lenticulari, ptillide cornea, confertissime oblique striata, striis 

 spiralibus exiguis decussatse; spira depresse conoidea, sutura 

 impressa, apice obtusiusculo ; anfr. 5 lente acrescentibus, con- 

 vexiusculus, ultimo antice majori, non descendente, peripheria 

 acute carinato, marginato, subtus convexiusculo, margine peri- 

 omphali obtuse angulato ; umbilico profundo, subanguste per- 

 spectivo ; apertura subsecuriformi ; peristomate acuto, marginibus 

 distantibus, columellari brevi, superne reflexiusculo. 



" Diam. maj. 9. min. 8, axis 4 mill." 



Hob. Ceylon : Kogarna (E. L. Layard). 



6. Trochomorpha hyptiocyclos, Benson. 



Helix hyptiocyclos, Benson, A. M. N. H. ser. 3, xi, 1863, p. 89. 

 Patula ( Gonyodiscus) hyptiocyclos, Pfeiffer & Clessin, Nomencl. Helic. 

 Viv. 1881, p. 92. 



Original descriptions: " H. testa latissime umbilicata, orbi- 



