IIO Records of the Indian Museum. [Vo.. XVIII, 
The genitalia. On comparing the genitalia of this form with 
those of L, gedrosiana' we find that the hermaphrodite gland is 
much larger and more lobose. The hermaphrodite duct is much 
longer, more convoluted and more swollen in its distal portion. 
The situation of the prostate is similar but the gland itself is larger 
and the upper part of the male duct above the prostate much 
more swollen; the penis-sac is also more elongate. The uterus is 
swollen in the middle but pointed at the two ends. The sper- 
matheca has a shorter duct than in L. gedrosiana, but nearly equal 
in length to the spermatheca itself. 
HG. 
Phy 
AL.G. 
Ac. 
Sits 
“Sp.D. 
\ 
<< 2 
PS. 
3 
Fig. 1.—Genitalia of Limnaea peregra canalifera, Mousson. 
Measurements (in millimetres) and Proportions of Shells. 
Height is xh 21 21 17 17 
Maximum diameter BS: 15 13 3 13 1 
Height of mouth .,, 4: 16 17'5 15 14 I2 
Maximum diameter of mouth 8 8 i ff 5 
Maximum diameter to height 
of shell a6 Teale [ie 06 Oh sess 
Maximum diameter to height 
of mouth a i ne) 1 OPT Pe Pale | kB PAL 
Height of mouth to that of 
shell see hoe in WBN Teel a2 eo mliaett hele 
Maximum diameter of mouth 
to that of shell ... i! PesLO7 1 oe HeplsO2en aly: Wag lon pega eae 
1 Rec. Ind. Mus. XVIII, p. 40, fig. 5B (1919). 
