cnLORiTis. 175 



usculo, subtiis convexiusciilo ; apertura obliqna, subquadi-ato- 

 lunata, intus concolore, peristomate expausiusculo, superne antice 

 arciiato, subtus breviter reflexo, mai-ginibus remotis, columellari 

 supenie valde dilatato, umbilicum subtegente. 



"Diain. inaj. 16, niin. 13], axis 10 mm/' (Benson.) 

 Hah. Andaman Islands : Port T31air (Stoliczlca, Nevill, Wood- 

 Mason, Koepsiorff). 



A ratber striking species of Tricliocldorltis, exhibiting a con- 

 siderable amonnt of rariation as regards ornamentation and color- 

 ation. Pfeiffer figni'es several distinct forms. Lt.-Col. Godwin- 

 Austen mentions two varieties (unifasciata and albina, both M8. 

 names of Nevill). The commonest form appears to be the one 

 with a dark chestnut or blackish-brown peripheral band. The 

 colour of the shell is usually white, but some forms have the 

 penultimate and last whorls reddish brown or dark fuscous above 

 the periphery, with or without the peripheral band, or the two 

 whorls may be entirely fuscous. White shells without band also 

 occur. The last whorl, moreover, is characterized by a girdle- 

 like swelling at the periphery bounded above by a corresponding 

 depression, while the upper part of the whorl again is inflated. 

 The peristome is usually white, but when the last whorl is 

 entirely dark brown it is reddish violet. 



148. Chloritis cyclotrema, Benson. 



Helix cyclotrema, Benson, A. M. N. H. ser. 3, xi, 1863, p. 88 ; Hauley 



& Theobald, Conch. Ind. 1870, pi. :?8, fig-. 10. 

 Arioplumta cyclotrema, Theobald, Cat. Shells Brit. India, 1876, 



p. 22. 

 Nanina {Ariopha?ita) ci/clotrema, Trvon, ^lan. Conch, ser, 2, ii, 



1886, p. 17, pi. 2, fig. 22. 

 Heli.v (Planlspira or Track ia) cyclotrema, Blanford, Proc. Mulac. 



Soc. Loudon, iii, 1899, p. 283. 



Original description: — " H. testa sinistrorsa, obtecte umbilicata, 

 conoideo-suhglobosa, oblique striatula, granulata, sub epidermide 

 cornea, albida ; spira conoidea, apice obtuso, subfoveata, suturis 

 impressis ; anfractibus 4], convexis, gradatim crescentibus, ultimo 

 ad peripheriara obtuse angulato, unifasciato, antice lato, h:)nge 

 descendente, subtus convexo ; apertura valde obliqua, rotundata, 

 peristomate dilatato, reflexiusculo, marginibus couniveutibus, 

 approximatis, callo brevi junctis, columellari late auriculato um- 

 bilicum celante. 



"Diam. maj. 22, min. 18, axis 11 mm."' (Benson.) 

 Hah. India: Sumeysur, base of Himalayas (Theohakl). 



149. Chloritis anserina. Theobald. 



Heliv anserinn, Theobald, J. A. S. B. xxxiv, 1866, p. 276 (nom. 



nud.) ; ibid, xxxix, 1870, p. 39") (noni. nud.). 

 Heliv anserina, Hanley & Theobald, Conch. Ind. 187o, pi. 112, 



tigs. 7 & 10. 



