Occasional Papers of the Museum of Z oology 49 
orosciana by its greater altitude and by the character of the 
sculpture, as just described. 
Euconulus elegantulus (Pilsbry) (1919).—Two hundred 
twenty-eight specimens; on ground in lowland forests (H, I, 
a) and savannah brush (H, ITI, a) ; the most abundant species 
on the elephant-ears along Arroyo Hueyapam (H, II, a); and 
on leaves of low vegetation in the lowland forests (H, I, b). 
Apparently a ground species, which moves up into the lower 
vegetation, somewhat more so than does Guppya gundlachi, 
but not truly arboreal in habits, as is G. trochulina. 
The jaw and radula (fig. 6) of two dried specimens of this 
species were also examined. The jaw is very similar to that 
of E. fuluus. The formula of the radula is: 
I ) A) B 3-4 O-I 
Game 5 yep Me ee ee 
3 3 2 3 4 i 
or (31, 33)-9-1-9-(31, 33). The central has the reflected 
plate shorter distally than in G. trochulina, but the cusps are 
longer, so that the whole tooth appears equally elongate. The 
laterals differ in the same manner, but go through similar 
changes to those in the latter species, and the break between 
the last tricuspid tooth and the first bicuspid is but little more 
marked. The main difference between the two species lies in 
the fact that all of the well-developed marginals are bicuspid 
in E. elegantulp? and the rows are more nearly horizontal than 
in G. trochulina. Two tricuspids and 3 or 4 quadricuspids 
occur among the reduced teeth at the outer end. 
’ 
For comparison with this species, the radula of Euconulus 
fuluus (Miller) was re-examined.1 The shape of the teeth, 
as very well shown in Taylor’s reproduction (1908) of Schep- 
1Two large specimens; A. N. S. P. No. 87302; collected at Buck- 
field, Oxford County, Me., by J. A. Allen. 
