176 PROCEEDINGS OF THE ACADEMY OF 
Amalia marginata, as figured by Heynemann (I. c. pl. IIL., fig. 7). 
Goldfuss also (1. c. 1856, pl. IV., fig. 3) figures the dentition of 
LI. marginatus as the same. 
Limax campestris, Binney (pl. IV., fig. 5, a. 6. ¢.). One speci- 
men has 40—1—40 teeth, 18 perfect laterals. Another gives 
36—1—36, with 11 perfect laterals. The centrals and laterals are 
of the same type as described above in L. agrestis, excepting that 
there is no peculiar inner side cutting point to the first laterals. 
About half of the marginals are bifid. I find great difficulty, 
however, in detecting any bifurcation on the extreme marginals. 
‘As stated above, Heynemann’s figure of the dentition of L. Wein- 
landé could not have been drawn from this species. I have no in- 
formation in regard to L. Weinlandi other than what I find in 
Malak. Blatt. X. 212, pl. IIL., fig. 1. Judging from the dentition 
alone I should hardly consider it distinct from agrestis. 
L. campestris differs greatly in its genitalia from JL. agrestis, 
to which it has been compared. 
This completes the list of North American Limaces now known. 
I will add that maximus and flavus are put by Heynemann in the 
s. g. Heynemannia; agrestis in s. g. Agriolimax ; campestris 
would be placed by him in s. g. Malacolimax ; while Hewstoni 
would be placed by him in the genus Amalia. 
Since the above was written I have received specimens collected 
in the mountains of Colorado by Mr. Ernest Ingersoll, of a species 
for which I propose the name ZL. Ingersolli. A full description 
will be published later. I will here simply state that there are 
50—1—50 teeth, with 16 perfect laterals. All the marginals have 
a blunt spur to the cutting point, so that they may be said to be 
biuntly bifid. 
The dentition of Limaz is nearly allied to that of Zonites. The 
lateral teeth are arranged in straight transverse rows, the mar- 
ginals in oblique rows, as aculeate marginal teeth always are. 
This tendency to obliquity in the rows of aculeate teeth we have 
seen most plainly shown in Glandina. To show the general 
arrangement of the teeth in straight and oblique rows I repeat 
the figure by Morse in L. and Frw. Sh. N. A. I., which was pro- 
bably drawn from ZL. agrestis. It must be borne in mind that this 
figure is not intended to show the characters of the separate teeth, 
for which I refer to my plate. 
The genus Lima differs from Zonites in its dentition by hav- 
