TESTACELLA MAUGEI. 23 
The LINGUAL TEETH in this species are more closely arranged upon the radula, 
and the transverse rows of teeth much less acutely angulated than in either 7. 
SS Zs 4 
4 = 
Fic. 35.— Isolated teeth from the 
Fic. 34.—Transverse row of teeth from odontophore of 7. maugez fifth and tenth longitudinal rows of 
x 20, from Bristol ; figured from a photo. by A. H. Cooke. the radula of 7. #angei x 40. 
haliotidea or T. seutulum,} the individual teeth are smaller, less distinetly barbed, 
the poaphysis near the middle of the tooth, and the minute vestigial central tooth 
distinetly perceptible in certain parts of the radula. 
rmula of dristol speci is 14+0+1+0 x 2 7( 
The dental formula of a Bristol specimen is - : ee x 30 = 870 
Reproduction and Development.— According to Gassies, it is the 
most prolific species of the genus, and in France may 
lay five times in one year, eight to fifteen large, some- 7 
what acuminate oval eggs, about five mill. by four mill., ge ee 
which are enclosed in firm, white calcareous shells, EEE GhenGae: 
which gradually become yellowish. In this country ‘54nd Fische. 
they have been observed to lay in May and August, the eggs hatching in 
from twenty to thirty-five days, according to the weather. 
Food and Habits.—7. maugei is not active, but more gregarious than 
either 7. haliotidea or T. scutulum, and is also more insatiable and raven- 
ous, destroying its congeners in default of other food when confined with 
them. It usually lives from six to twelve inches beneath the surface, its 
retreat, according to Mr. ‘Tomlin, being easily detected by the large, clean- 
cut hole it leaves, very different from that of a worm, and usually beneath 
some sheltering plant. 
In wet weather, when driven from their subterranean retreats, they hide 
beneath the foliage of garden pinks or other sheltering plants, often in a 
sort of open nest in the moist earth, to the aspect of which their usual 
colouring closely assimilates. 
Geological History.— 7estucella maugei has not been found fossilized 
in this country, but has been recorded from the basin of the Rhone, and has 
been described under the names of 7. lurtetii Dupuy, 7. nouleti Bourg., 
' 
ee / 
’ = 
Fic. 37.—T. lartetii x 3 Fic. 38.—T. lartetii x 4 Fic. 39 —T. nouleti Bourg. x 2 
(after Gassies & Fischer). (after Dupuy). (after Gassies & Fischer). 
and 7. aqguitanica Grateloup, from a friable, argillaceous marl in the hill 
of Sansan, Gers, ascribed to Miocene age. The 7. deshayesii Michaud and 
T. alte-ripe Grateloup, from the blue Phocene marls of Haute-Rive in the 
Drome, are also considered practically identical with 7. maugei by Gassies 
and Fischer, while 7. asinina de Serres, from the Middle Pliocene freshwater 
deposits of Frontignan, near Cette, and 7. bruntoniana de Serres, from the 
1 This peculiarity alone establishes the incorrectness of the reference to 7. haliotidea of the figure of 
the teeth, given on p. 298 of Woodward’s Manual ; it should be really ascribed to the present species, Mr. 
Cocken, who prepared the radula from which the engraving was made, correctly indicated the species under 
Lamarck’s name, 7. hadiotoides. 
