116 XEROPHILA ITALA. 
The SHELL is very depressed and almost discoid above, but more convex and 
bombous below ; of a glossy, semi-opaque cretaceous substance, and of a greyish- 
white or pale greyish-fawn colour; the WHORLS 
are six in number, cylindrical and regularly 
increasing in size, the last somewhat dilated 
towards the aperture, with usually one broad 
dark spiral band above the periphery and several 
more slender ones beneath ; the SCULPTURE is = - 
somewhat irregular and plicate above, with Fic. 169. Fic. 170. 
finer intermediate strize and numerous minute oy ee ee 
irregularly shaped pittings scattered over the Fic. ee Frontal aspect and 
surface ; the SPIRE is only slightly raised, and s a Mara st ee OF ee ee 
terminates in a brown and more or less pellucid ‘Tenby, S. Wales, Mic Wee 
apex ; the APERTURE is oblique, almost cirenlar 
and slightly expanded ; the OUTER LIP is slightly reflected towards the columella 
and abruptly inflected above, with a slight internal submarginal rib or thickening ; 
SUTURE distinct; UMBILICUS very wide and open, exposing all the interior of 
the spire. 
Diameter, 17 mill. ; altitude, 8 mill. 
The INTERNAL STRUCTURE shows a pale buff KIDNEY or renal organ, of a some- 
what elongate shape, tapering and curved like a broad bladed seythe. _Moquin- 
Tandon describes this organ, under the name of ‘ glande precordiale,” as of a 
nearly opaque yellow colour, and elongately twisted like a horizontal @%, while the 
HEART within the somewhat fusiform PERICARDIUM is appressed to the concave 
proximal margin; the VENTRICLE is large and of an opaque-grey ; and the AURICLE 
is noticeably smaller, transparent, and colourless. 
The ALIMENTARY SYSTEM displays an (ESOPHAGUS which is very long, somewhat 
twisted, and uniform in thickness, the large yellowish-white SALIVARY GLANDS 
embracing the anterior third of its course, and discharging their secretion by a pair 
of short DUCTS; the CROP is voluminous and elongate, and at its distal extremity 
is abruptly bent back upon itself and continued as the usual three tracts, or 
Fic. 171. Fic. 172. 
_ Fic. 171.—Alimentary tract of an adolescent example of \Verxof/i/a ita/a, from Charlton Kings, 
Gloucestershire ; from a dissection and sketch by Prof. Boycott, x 4. 
Fic. 172.—Alimentary canal of an apparently abnormal example from Epsom, Surrey; from a 
dissection and sketch by the late Mr. Charles Ashford, x 4. 
courses of the gut, the RECTUM in its course passing close to the heart. The 
digestive gland or liver is usually of a light brown colour, and the hepatic arterial 
vessels are quite colourless. 
In Mr. Ashford’s original drawing of his dissection of a specimen of this species 
from Epsom, the distal extremity of the crop or stomach shows an asymmetrical 
pair of globose expansions, beyond which the stomach gradually diminishes in 
amplitude, and passes into the normal gut. 
