378 MOLLUSCA. 
3. Limnea cubensis. 
Limneus cubensis, Pfr. in Wiegmann’s Archiv f. Naturg. 1839, p. 3541; Kister, in Martini & 
Chemnitz, Syst. Conch.-Cab. ed. 2, Limneus, p. 32, t. 6. figg. 6-8°; Tryon, in Am. Journ. 
of Conch. ii. p. 11 (1866) (Lymnea)*; Sowerby, in Reeve’s Conch, Icon. xviii., Limnea, 
t. 8. fig. 484; Strebel, Beitr. Mex. Land- und Siissw.-Conch. i. p. 58, t. 4. fig. 33°; Fisch. 
& Crosse, Miss. Scient. Mex., Mollusca, i. t. 27. figg. 82, 32a, 11. p. 50°; Pilsbry, Proc. 
Acad. Phil. 1891, p. 320’. 
Hab. E. Mexico: City of Vera Cruz, in ditches near the railway (Strebel®); Rio 
Tenoya, Vera Cruz (Strebel 3); Orizaba (Hetlprin’). 
W. Guaremata: Antigua, in rivulets (Morelet®). 
CentraL AMERICA ([iister). 
ANTILLES: Cuba (Pfeiffer124); Puerto Rico (Blauner); Santa Cruz (Griffith *). 
VENEZUELA: Caracas (Gollmer, in Mus. Berol.). 
A small conico-globose species, allied to the European L. truncatula, Mill. 
Pilsbry 7 identifies LZ. cubensis with the North-American L. umbilicata, C. B. Adams 
(1840), which is said to extend from New England to St. Louis and Eastern Texas, and 
includes with it as a variety LZ. bulimoides, Lea, which inhabits the west coast from 
Vancouver to California, and also occurs in Central Nebraska and Western Texas. 
This establishes a continuity in the range of Z. umbilicata, analogous to the wide 
distribution of the nearly allied LZ. truncatula, Mill., within EKurope—from Northern 
Norway (71° N. lat.) and Lulea, Lapland, to Spain, Italy, and Greece,—and the 
occurrence of the latter in Siberia, Syria, Northern Africa, and Madeira. 
4. Limneza columella. 
Limnea columella, Say, Journ. Acad. Phil. i. p. 14 (1817), 11. p. 107 (1821)*; ed. Binney, pp. 56, 60’; 
Haldem. Monogr. Limniades, v. p. 38, t. 12°; A. Gould, Invertebr. Mass. pp. 215, 216, 
' figg. 144, 145°; ed. 2, p. 471, fig. 723°; Kiister, in Martini & Chemnitz, Syst. Conch.-Cab. 
ed. 2, Limneus, p. 44, t. 8. figg. 8-5°; Binney, Land and Freshw. Shells N. Am. ii. 
pp- 82-37, figg. 38-447; Reeve, Conch. Icon. xviii., Limnea, t. 10. fig. 86°. 
Hab. Norty America: from Lake Superior, Canada, and Nova Scotia to Georgia and 
Missouri >”. 
Binney’ (p. 387) also gives as locality, “San Felipe Spr.” (Capt. Beale), which is 
probably the San Felipe in New Mexico or the place of that name in Texas. 
Var. championi, n. (Tab. XTX. fig. 12.) 
Shell cblong-ovate, thin, irregularly striate, fawn-coloured; whorls 4, moderately increasing, the upper ones 
very convex, the last oblong, less convex. Aperture very slightly oblique, occupying 2 of the whole 
length, narrowly oval, not very acute above; its outer margin not much arcuated; basal margin rounded; 
columellar margin almost vertically ascending, thin, triangularly reflexed above, having a small umbilical 
slit in some specimens. 
Long. 12-134, diam. 6-8; apert. long. 8-9, lat. 4-5 millim, 
