Oo 
LYMNEIDA OF NORTH AMERICA. 21 
Remarks: Bulimoides may be distinguished from techella and 
other races by its more regularly ovate shape, less globose body-whorl, 
more elongate-ovate aperture and by the different manner in which the 
inner lip is appressed to the columellar region. There is considerable 
variation in the rotundity of the whorls and in the length and acuteness 
of the spire. The inner lip also varies greatly, in some specimens being 
rolled or folded over into the umbilical region while in others it 1s 
expanded, approaching the techella form. Bulimoides somewhat re- 
sembles cubensis, differing in its nearly closed umbilical chink, folded 
inner lip, shorter and broader spire and its ovate shell. The whorls of 
cubensis are also rounder and more distinctly shouldered than are 
those of bulimoides. 
Judging by Lea’s types of bulimoides, most authors have confused 
this species with techella and cockerelli. The figure in Binney is not 
good, representing, probably, cockerelli. Haldeman’s figures are good 
and fairly represent the species. The types in the Lea collection at 
Washington are rather small, long and narrow, regularly ovate-conic 
with a flat sided body whorl and with the inner lip reflected and ap- 
pressed to the umbilical region, leaving a small chink. Of the seven 
type specimens three are apparently nearly full grown and four are 
immature. 
In mapping the distribution of the typical form, great difficulty 
has been experienced in harmonizing some of the literature. In ref- 
erences from the southwestern states it is impossible to know whether 
true bulimoides or some of its varieties is intended. Call’s record in 
Bull. Wash. Coll. Lab. N. H., I, p. 118, is very doubtful, especially in 
view of his reference to Binney’s figure 86, which does not represent 
bulimoides. Only an examination of the specimens will settle the 
status of these doubtful records. Bulimoides is reported by DeCamp 
from Michigan “greenhouses, probably introduced on plants” (Watk- 
er, Nautilus, VI, p. 34). One of the type specimens of bulimoides 1s 
figured on pl. XXVII, fig. 25. (No. 118647 Smith. Inst.) Compare 
this figure with the figures in Binney and Tryon. 
In Dr. Pilsbry’s excellent discussion of the techella group of 
Lymnzeas! typical bulimoides was not redefined although techella, 
cockerelli and sonomensis were made races of this species. The tri- 
angular and rolled over form of the inner lip and the less rotund shape 
of the body whorl will separate bulimoides from techella and cocker- 
elli. Lymnea bryanti is a synonym of bulimoides; it was founded on 
immature specimens. 
1Proc. Phil. Acad., p. 162, 1906. 
