66 CYCLOPHOKIDiE. 



laevigata, obsolete spiraliter striata, supra castaneo inarmorata efc 

 late fasciata, subtus spiraliter castaneo-lineata, fascia alba ad 

 peripha?riam, subtus altera nigro-castaueo concurrente ornata ; 

 spira depresso-conoidea, a|)ice acute ; anfractibus 5 couvexius- 

 culis, ultimo lato, subtus couvexo ; apertura vix obliqua, anipla, 

 circulari, intus cserulescente ; peristomate expanso, uudique reflexo, 

 Ijete aurantio, niarginibus callo brevi junctis ; umbilico subangusto, 

 pervio, intus augustiori. 



" Diam. uiajor 42, minor 33, axis 25 mill." (Benson.) 



Bab. India: Khasi Hills, Assam {Pearson) ; Dafla Hills, Assam 

 {Godwin- Austen); Tezpur {StoUczka); Sylbet and Gauhati {Nevill):, 

 Lacat (Theobald). 



"In form, sculpture, and markings C. Pearsoni much resembles, 

 in the back view, the shell figured by Sowerby, no. 128, pi. 27, of 

 the ' Thesaurus ' as C. perdLv, but the spire is less acute. It 

 differs otherwise in the narrower umbilicus, in the orange colour 

 and rounded edge of the peristome (which is destitute of the 

 flatness observable in C. perd'uv), as well as in the amplitude of 

 the aperture, convexity and want of keel in the wliorls, and in 

 the absence of the articulated baud at the suture." (Benson.) 



Nevill mentions a var. minor., from the Khasi Hills, as being 

 smaller, with less open umbilicus, and more angulate periphery. 

 He also refers to a peculiar small variety from Sylhet, which he 

 does not name, witl» a much raised spire, the last whorl almost 

 detached, and the periphery acutely keeled. This, however, can 

 scarcely be considered a variety, and must rather be regarded as a 

 monstrosity. 



Var. fuscicolor, Nevill. 



Ci/cluphorus pearsoni, var. fuscicolor (Godwin-Austen), Nevill, Hand 

 'List, i, 1878, p. 271;*Kobelt, Das Tierreich, Lief. 16, 1902, 

 p. 116. 



" A large variety with a trifle more open umbilicus and still 

 more sombre coloration." (Neinll.) 



Bab. India : Dafla Hills and Khasia Hills, Assam (Godwin- 

 Austen). 



Yar. suljalabastrum, Nevill. 



Cyclo2)horusful(/nraUis, Hanlej' & Theobald, Conch. Ind. 1870, p. 2, 



pi. 3, fig. 3 (non Pfeiffer). 

 Ci/clo])horus pe(irso7ii, var. subalabasfrum, Nevill, Hand List, i,]878, 



p. 271; Kohelt & Moliendorfi', Nacbr. Deuts. JNlalak. Ges. xxix, 



1897, p. 107; id.. Cat. Pneum. 1899, p. 19; Kobelt, Das 



Tierreich, Lief. 10, 1902, p. IIG. 



Differs from the type by the absence of markings, the shell 

 being of a uniform dull white colour. 



Bab. India: Chittagong (A'ei^iZZ). Burma: Arakan Hills (iiwrz). 



Several specimens of the typical form, received by me from a 

 native collector in the Khasi Hills in 1899, comprise one shell 



