THE NATURAL HISTORY SURVEY. 195 
is elongate-conical (agrestis) and in others spiral (campestris); 
ovary large, white, semi-elliptic, more or less curved and lobu- 
lated, placed at the summit of the oviduct, which is a long, 
wide, soft, white, tortuous, sacculated tube, passing from the 
ovary to the vagina; generative bladder generally large, pointed 
and oval, opening bya short, wide duct into the vagina; in 
agrestis it is large, elongated, oval,and opens by a short duct 
into the angle formed by the junction of the vagina with the 
male portion of the generative apparatus; in campesiris it isa 
small oval sac, with a longer, narrow duct, opening into the 
tube leading from the penis to the cloaca.* The character of 
the generative apparatus differs considerably in the various 
species, and will be treated under each. 
Distribution: World-wide. 
KEY TO SPECIES OF LIMAX AND AGRIOLIMAX. 
A. Slug large. 
a. Tubercles inconspicuous; color arranged on body in 
longitudinal stripes, dots or dashes, d/ack............maximus 
b. Tubercles large and conspicuous, body with oblong- 
OVER ULE DIO CUPS POLS as cre cits clone tnttiarslstateistel sr ole hantwlelsi«iaceialk avus 
B. Slug small. 
a. Body of various shades of amber, or blackish, with- 
GUL SPOS OL COLOK MARKINGS... yew iaie es owe ofa sw vee tee campestris 
75. Limax maximus Linné, pl. xxviii, figs. 3, 8. 
Limax maximus LINNE, Syst. Nat., 1758. 
Limax antiquorum FERUSSAC, Podr. 20; Hist., p. 68, pl. iv, pl. viii, A, 
fig. 1, 1819. 
(Vulgaris Moq., cedlarius D’Argentville, acudatus Picard.) 
Shell: Elongately quadrate, thin, silvery white in color, 
convex lines of growth rather coarse. Length, 13.00 mill.; 
width, 7.00 mill. (9316.) Theshell is only arudiment and pro- 
tects the lungs (Fig. 3). 
Animal; With an elongated body, with a strong dorsal 
carina terminating the posterior end and covered with longi- 
tudinal, elongated tubercles of large size; color ashy or light 
brown, with several uninterrupted black stripes extending from 
. the mantle to the posterior end, and with numerous alternate 
rows of round spots, which are placed longitudinally; the sides 
are much lighter in color and the foot and under parts are 
dirty white; mantle large, oval, with the tubercles arranged 
concentrically, color light brown with irregular blotches of 
black scattered over the surface; respiratory orifice very large, 
*W.G. Binney, Man. Amer. Land Shells, p. 236, 
