Occasional Papers of the Museum of Zoology 49 



orosciana by its greater altitude and by the character of the 

 sculpture, as just described. 



Buconulus elegantulurs (Pilsbry) (1919). — Two hundred 

 twenty-eight specimens; on ground in lowland forests (H, I, 

 a) and savannah brush (H, III, 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 gimdlachi, 

 but not truly arboreal in habits, as is G. trochnlina. 



The jaw and radula (fig. 6) of two dried specimens of this 

 species were also examined. The jaw is very similar to that 

 of £. fiilvus. The formula of the radula is : 



I 9 26 2 3-4 o-i 

 C — ;L-;M — -f- -\- + ; 



33234 I 



or (31, 33)-9-i-9-(3i, 33). The central has the reflected 

 plate shorter distally than in G. trochnlina, but the cusps are 

 longer, so that the whole tooth appears equally elongate. The 

 laterals dififer 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. clegantiila, and the rows are more nearly horizontal than 

 in G. trochnlina. Two tricuspids and 3 or 4 quadricuspids 

 occur among the reduced teeth at the outer end. 



For comparison with this species, the radula of Buconulus 

 fulviis (Miiller) was re-examined.^ The shape of the teeth, 

 as very well shown in Taylor's reproduction (1908) of Schep- 



iTwo large specimens; A. N. S. P. No. 87302; collected at Buck- 

 field, Oxford County, Me., by J. A. Allen. 



