Genus Cypvciia. 215 



(iii) Difference of marking and colour painting, 

 (iv) Dark ash coloured extremities. 

 (v) Ovate, not oblong. 

 Tt would seem to agree with caput anguis alone in its greater 

 convexity and sinuosity of the aperture. The base is exactl}- 

 like that of C. Manritiana in miniature, and adds another 

 link to that species with C. caput serpentis. 



C. Arabica (L.). I can find no distinguishing points, that 

 are permanent, to separate C. Jiistrio (Gmel.) and 7xticulatcv' 

 (Martyn) specifically from the type. C.amethystea (Linnaeus) 

 is a name apparently given to the young or decorticated shell. 

 C. eglantma (Duclos) is a shining brown, grey, or green 

 thickened enamelled form, and 6^. 7//^^r (Roberts), the hand- 

 some elongated shell from New Caledonia. C. intermedia 

 (Gray), a shining, somewhat obese, laterally thickened variety, 

 considered distinct by ]\Ir. A. Garrett, who collected it in the 

 Paumotus and Society Islands (r/!/. of ConcJi.^ 1879, p. ^H)" 



C. Walker i (Gray). 



{a) B regeriana {Cross€). (Sowb.,T. C., pi. xxxvii., f. 536) 

 This shell differs from the type in the orange base, with no 

 violet tinge, teeth twenty-two or twenty-three in number, 

 on each lip, dorsal surface banded much as in C. Walkeriy 

 enamel pitted with small white specks, as in C. testudinaria 

 (L.). This is very characteristic, and some authors, as Wein- 

 kauff, raise it to a specific position. 



Mr. Edgar Smith, F.Z.S., has, within the last few weeks, 

 received at South Kensington three specimens of a shell 

 which I believe will be shortly described by him, collected 

 by Mr. Ruddle, off the coasts of N. W. Australia. The shells 

 are all alike, except in size, the larger of the three being of 

 the shape and magnitude of Bregeriana, the two others 

 smaller. Colour brick red, with a touch of grey, shining, 



^ The dorsal pattern of C. Arabica is dark brown parallel longitudinal lines 

 everywhere broken up and confused ; histrio, more an open net-work, with 

 -round white spaces between ; reticulata exactly intermediate between these two. 



