s TRBSTACELLA HALIOTIDBA, 
Reproduction and Development.—'The eggs are few in number, 
about six mill) by four mill, with opaque, m % 
vellowish-white caleareous shells, they are ob- a we 
long-oval in shape, but, according to the Abbe ee . 
Dupuy, necntactis becoming somewhat acumi- a a “ Py our en 
nate at the poles, immediately after deposition, X 14 
They are deposited deep in the earth galleries ppc ag oe dois iihaana 
during the spring months, and, according to — deposition, xT} falter Dupuy), 
Gassies, hatch in ten or twelve days, the young wis te change of form. 
being usually of a greyish colour dashed with greenish-yellow, and becom- 
ing adult in the autumn, 
Food and Habits.—7. Aaliotidea is markedly nocturnal in habit, 
emerging from the earth on the approach of twilight, and seizig upon the 
worms as they extend themselves from their burrows ; they re-euter the 
earth at daybreak, or hide beneath stones or other objects, their marked 
resemblance when contracted to a pebble assisting their concealment. 
According to Gassies & Fischer, this species is less gregarious and more 
solitary in its habits than 7° meege?, but is found most easily and frequently 
at daybreak in March and April, crawling over the surface of the soil or 
hiding beneath dead leaves or rubbish, 
Geological History.— 7. Auliotidee has not been found fossil in this 
country, but is found in the quaternary deposits at Villefranche, depart- 
ment Aveyron, and in those of Toulouse, in the Haute Garonne ; it has also 
been detected in the blue argillaceous marls near Montpellier, and in the 
sandy bed of the ancient lake of Sarlive near Clermont, Puy-de-Ddme. 
Variation.—Gassies & Fischer discriminated five varieties of this species, 
and Moquin-Tandon six others, but these cannot all be accepted, as these 
authors confused 7° sewtedem and other species with 7° Aadiotidec, regarding : 
them as simple varieties only. 
A var. algerie is enumerated by Grateloup in Dist. Geog. Limae., p. 16, 
from Canary Islands, and Oran and Bone in Algeria. 
VARIATIONS IN FORM OF SHELL. 
Var. trigona G. & F., Monog, 'Testacelle, 1856, p. 46, pl. 2, £ 6a. 
var, @latate Pollonera, Boll, Mus. Zool. Torino, Mar, 31, 1S8Q& 
Suet thicker, right margin much dilated, the AVEX being thus to the left. 
Probably the 7. subtrigenc Pollonera, from Tarin, 7. bronde?i Bourg., from the 
banks of the Edough, near Bone, Algeria, and 7. drymeonta Bourg., from the Isle of 
Capni, should also be relegated to this interesting and well-marked variety. 
= e. , 
| ») 
Fig. M.—7. dremel? Bgt., Fig. 17). erperenca Bst., Fig. 1Q.— 2) sadirigena Poll., 
X 2 (after Bourguignat X 2 (after Bourguignat) x 1§ (after Pollonera) 
British Isles—Royal Botanic Gardens, Glasnevin, Dublin, 1895! RL FL Seharth. 
France— Bornleaux (G. & F., op. ett., p. 50), 
Italy—Villa Doyen, Cavoretto, near Torino (Pollonera, op. eit.) 
Cuba— Havana, doubtless introduced, Petit (GQ. & F., op. eit., p. 50). 
Var. elongata G. & F., Monog. Testacelle, 1856, ~~ 
p. 49, pl. 2, £ Ge. a» 
Sueun long, thin, and narrew. 
Pia 17.— Testacedia halte~ 
; France —Bordeaux, Comme et daudouin (G. & F., op. tiden v. clonrata XS (alter 
ort, p. 50), Gassies & Fischer) 
