™ 
a HYALINIA CELLARIA. 
larger adimedian or lateral teeth, each with three irregularly disposed cusps or 
cutting points, beyond which there is a transition tooth which, though still retaining 
the mesocone and endocone, has frequently lost the ectocone; the remaining teeth 
are strictly aculeate, and diminish rapidly in size towards the margins of the 
>. 
N MY, 
me ubrane. Wy A WW AVY Ly f 
Nt vs MA ace y ‘ 
Fic. 66.—Transverse row of teeth from the odontophore of /7. ced/aria, x 150. The animal collected at 
Christchurch, Hants., by Mr. C. Ashford, and the palate prepared by Mr. J. W. Neville. 
The formula of a Christchurch specimen is 
Je4+ be +44 Bt +42 x 85 = 1,015 
Reproduction and Development.—Little or nothing is known of 
the congress and development of this very abundant 
species beyond that the pairing time probably extends 
over almost the whole year, as eggs have been observed 
to be deposited as early as February and also in August, 
and that the male element is transferred during pairing 
by means of a spermatophore. 'The eggs, which number Spence eee 
thirty to forty, and rarely fifty, are deposited singly; 4. cellaria, x 10 
they are spherical and dull white in colour, enclosed ie eee BY: 
within a calcareous envelope, and are about one-and-half 
mill. in diameter. They hatch in fifteen or sixteen days, the young 
attaining maturity at the commencement of the second year. 
Food and Habits.—JH. celluria secretes a large quantity of thin 
shme, and is a very shy and inactive animal during the day, when it 
may be found hiding beneath stones, at the foot of or in the crevices of 
walls, amongst almost any kind of refuse or hidden under dead or decaying 
leaves i in hedgerows, and has even been found in gardens in early spring 
at a depth of eight to ten inches beneath the surface. It especially fre- 
quents dark cellars, vaults, damp outbuildings, yards, and other places 
about human dwellings 8, penetrating into and even thriving in such abodes, 
quite in the heart of the lar gest cities. 
At dusk it becomes more active, and then emerges from its place of 
concealment, and feeds upon the cryptogamic vegetation which flourishes 
in damp and darkness. #1. cellaria is, however, by no means restricted to 
this diet, but will crawl into milk- bowls, presumably to partake of their 
contents, and is also actively predacious, having been observed in the 
act of devouring small worms. ‘hey have also a ; particular relish for the 
eges of Arion ater, and will even burrow down to them when they are 
buried beneath the surface of the soil. T hey will also attack and devour 
other mollusks, and Van-den-Broeck records Helix fasciolatu as one of the 
species which readily falls a victim to their attacks. 
About ‘Tenby Mr. A. G. Stubbs has observed that this species has a 
decided preference for the common “Alexanders” (Smyrnium olusatrum 
L.), whose large leaves keep the ground at the base of the plant cool 
and moist. 
On the continent it is noted as almost alpine in its habits, occurring in 
Savoy only above the zone of the vine, and ascending up to nearly 4, 000 
feet ; in the Pyrenees it lives in the zone of Helix limbata, at an altitude 
between 3,500 and 5,000 feet. 
