LIMAX. 149 



side of the cusp, rather than in a position corresponding to the outer cutting 

 point ; it is very difficult of detection, being on a different plane from the outer 

 cutting point, and readily confounded with the inner lower angle of the base of 

 attachment. It is figured by Lehmann and Heynemann. The marginals are 

 long and slender, without bifurcation even on those on the extreme edge of the 

 membrane. Fig. 105 of p. 63 of L. & Fr.-W. Sh. N. A., I., probably was drawn 

 from a specimen of this species, certainly not from one of Jlavxis. 



Goldfuss (1. c. PI. V. Fig. 4) omits the cutting points from his figure. 



The genitalia, as well as complete anatomy, are figured by Leidy (Vol. I. 

 PI. II. Figs. 7-9). The genital bladder (7) is short, narrowly elongate cvate, 

 with blunt apex and short duct. The penis sac (4) is peculiar; it is short and 

 stout, narrowing towards its apex, where it is extended into a short, trifurcate 

 gland (3) ; the retractor muscle (5) is attached on the side of the penis sac, 

 below this gland. 



Limax campestris, Binney. 



Vol. IE. PI. LXIV. Fig. 3. 



Color usually of various shades of amber, without spots or markings, some- 

 times blackish ; head and eye-peduncles smoky ; body cylindrical, elongated, 

 terminating in a very short carina at its posterior extremity ; mantle oval, 

 fleshy, but little prominent, with fine concentrical lines ; back covered with 

 prominent elongated tubercles and furrows ; foot narrow, whitish; respiratory 

 foramen on the posterior dextral margin of the mantle ; body covered with a 

 thin, watery mucus. Length, about 25 mill. 



Limax campestris, Binney, Proc. Bost. Soc, 1841, 52 ; Bost. Journ. Nat. Hist., 

 IV. 169 (1842); Terr. Moll., II. 41, PI. LXIV. Fig. 3. — Adams, Shells of 

 Vermont, 163 (1842). — DeKay, N. Y. Moll., 23 (1843). — Leidy, T. M. 

 U. S., I. 250, PI. II. Figs. 5, 6(1851), anat. — Tryon, Am. Journ. Conch., 

 III. 315 (1868). — W. G. Binney, L. &. Fr.-W. Sh., I. 66 (1869). — Gould 

 and Binney, Inv. of Mass., 409 (1870). 



Limax campestris, var. octidentalis, J. G. Cooper, Proc. Ac. Nat. Sc. Phila. 

 1872, 146, PI. III. Fig. C. 



Inhabits all the New England, Middle, and Western States, and is probably 

 widely diffused through the Northern and Interior Regions. Found also at 

 Aiken, S. C. It has also been quoted from the Pacific Region as var. occi- 

 dentalis. (See next page.) 



The resemblances between some of the species of this genus are so great 

 that it is difficult to provide them with distinctive characters, and it is only by 

 close comparison that their differences can be seen. The present species, 

 although considerably smaller, is nearly allied to Limax agrestis. Its differen- 

 tial characters are as follows : It is always much smaller, and at all ages pos- 

 sesses a peculiarly gelatinous or semi-transparent consistency. The tuberosities 

 of the surface are more prominent in proportion to their size, are not flattened 



