54 LAND AND FRESHWATER 
‘‘ Habitat cum preecedente,” ¢.¢. the Cissutle} Mountains, near 
Fagu, Narkanda, Saraon, &e. 
It is ‘‘much smaller and rather more elegantly shaped,” and is, 
perhaps, rather more numerous than altivagus, though this is far 
from uncommon. 
There is a very small species in the British Museum in the same 
bottle with 4. giganteus, mentioned above, which appears immature, 
but is certainly another species. It measures—Total length 20 mm., 
mantle 9:0; breadth 5°5. It may be distinguished by its olive- 
brown colour and having the mantle speckled with black, and two 
well-marked lines of this colour on either side of the extremity of 
the foot ; it agrees well with modestus of Theobald. I hope shortly 
to receive a collection of slugs from Darjeeling which may contain 
this species, for there is now some doubt whether giganteus of 
Heynemann was ever obtained there. This may possibly be the 
young of A. schlagintwziti, described by Heynemann on p. 141, l.¢.; 
but he does not give any dimensions. 
EXPLANATION OF PLATE VI. 
Fig. 1. Anadenus altivagus, Theob.: animal, side view, nat. size. Spirit- 
specimen. Simla. 
. Ditto: respiratory orifice, x 4. 
. Ditto: ditto, with the anal aperture (4.ap.) adjacent, x 4. 
. Ditto: the generative aperture, x 4. Portion protruding showing 
the spines (vide Plate VII.). 
5. Ditto: the jaw, x 7. 
6. Ditto: teeth of radula, x 360. 6a,66. The outermost laterals. 
7. Ditto: the generative organs, X 1}. 0.¢., ovotestis; h.d., herma- 
phrodite duct ; Al.Gld., albumen-gland; ov., oviduct; v.d., vas 
deferens ; P., male organ, with (7.m.) retractor muscle ; Sp., sper- 
matheca. 
wm co bo 
EXPLANATION OF PLATE VII. 
Fig. 1. Anadenus altivagus, Theob.: shell, x 2. Simla. 
2. Ditto, nat. size. =giganteus, Heynemann; from his drawing, 
Taf. i. fig. 1g. 
os schlagintweiti, Heynemann, nat. size ; from his drawing, Taf. i. 
me. 
4, Porte of back of A. gigantews, Heynemann; from his drawing, 
Taf. i. fig. 1h, &e. ; 
5. Anadenus altivagus, Theob. Simla. View of heart and renal organ, 
seen from below, showing position of the different muscle-attach- 
ments. MV/.f., Mantle, frontal edge; M.., mantle, left side; R., 
renal organ surrounding the ventricle; 7, intestine; 7m. T., P., 
& O., retractor muscle of eye-tentacles, penis, and odontophore 
respectively ; /tes.Or., position of respiratory orifice. 
6. The generative aperture cut open on the frontal side to expose the 
dart-sac, with its numerous spines and (a) the perforated shield ; 
b, spines attached to the shield at its upper margin; c, larger 
and stronger spines attached to the posterior upper part of the 
sac ; d, row of short spines extending to the generative aperture ; 
e, outer integument of the animal; e¢, muscular sac; f, the 
aperture into the vagina and spermatheca below this and in- 
clining upwards to the left (ede fig. 7, Plate VI.) ; v.d., portion 
of vas deferens. 
