PUPOIDES, 329 
PUPOIDES. 
Pupoides, Pfeiffer, Malak. Blitt. i. p. 192 (1854) ; Arango & Molina, Contrib. a la Fauna Malac. 
Cubana, p. 87 (1878) ; Clessin, Nomencl. Helic. Vivent. p. 256. 
Pupa, subgen. Leucochila, part 1,v. Martens, in Albers’s Die Helic. ed. 2, p. 296 (1860); Binney, 
Land and Freshw. Shells N. Am. i. p. 239; Terr. air-breath. Moll. N. Am. v. p. 203; Man. 
Am. Land-Shells, p. 324. | 
Shell oblong, with 53-7 convex whorls, rather conical above, of minute size; 
aperture semioval, with thick expanded margins, without teeth or plaits. 
For radula and jaw see Binney [Terr. air-breath. Moll. N. Am. v. t. 4. fig. T; Jickeli, 
Land- und Siissw.-Moll. Nordost-Afr. (Nov. Act. Leopold. Acad. xxxvii.) 1274, p. 101, 
t. 2. fig. 1]. 
Intermediate between Buliminus and Pupa, resembling the former in the general 
shape and the want of apertural teeth, but agreeing with the latter in size and in the 
thick almost continuous peristome. 
Widely distributed in North America, the Antilles, Western Africa, Abyssinia, 
South Arabia, Mesopotamia, British India, Australia, and Polynesia. 
1. Pupoides marginatus. (Tab. XIX. fig. 1.) 
Cyclostoma marginatum, Say, Journ, Acad. Phil. 11. p. 172 (1821)'; Binney, Complete Writings 
of Say, p. 22’. 
Bulimus marginatus, Binney, Terr. air-breath. Moll. N. Am. iv. p. 186°; Pfr. Monogr. Helic. 
Vivent. iv. p. 414 (part.) *; vi. p. 76°; Tryon, Am. Journ. Conch. i. p. 285 °. 
Leucochila marginata, Tryon, Am. Journ. Conch. iii. p. 305, t. 15. fig. 11 (1867) ’. 
? Pupa fallax, Say, Journ. Acad. Phil. v. p. 121 (1825) °; Binney, Complete Writings of Say, p. 28°; 
A. Gould, Report on Invertebr. Mass. p. 192, fig. 123"; ed. 2, p. 436, fig. 693"; Pfr. 
Monogr. Helic. Vivent. ii. p. 309”; iii. p.533° (not P. fallax, A. Gould, Bost. Journ. Nat. 
Hist. iv. p. 357, t. 16. fig. 15). 
? Pupa (Leucochila) fallax (Say), v. Mart. in Albers’s Die Helic. ed. 2, p. 296"; Binney, Land and 
Freshw. Moll. N. Am. i. p. 239 (? fig. 414)*°; Terr. air-breath. Moll. N. Am. v. p. 203 
(part.) (not iii. and v. t. 52. fig. 1) °; Man. Am. Land-Shells, p. 324 (? fig. 351)”. 
Pupa albilabris, C. B. Adams, Vermont Moll. p. 158 (1842) *; Silliman’s Am. Journ. Sci. (1) xl. 
p- 271”. 
Shell conically turrite, rather widely perforate, feebly striate, somewhat glessy, dark yellowish-brown, the 
first two whorls pale yellow ; whorls 6, regularly increasing in size, 1.ather strongly convex, the first: 
whorl much swollen, globiform. Aperture nearly vertical, oval; peristome very thick, distinetly expanded 
and reflexed, glossy white; outer margin strongly arcuated near its upper end; basal margin broadly 
rounded; columellar margin slightly arcuated ; upper wall of the aperture smooth, brown, without any 
calcareous deposit. ; _ 
Length 43, diameter scarcely 2 millim. ; aperture with the peristome 13 millim. long and broad; last whorl, 
5 ’ 
seen from the dorsal side, to the whole length as 1: 3. 
Hab. Norra America: New England !! 18 19 to S. Carolina and Nebraska to Texas 1° 17. 
Mexico: probably near the city (Hége). 
ANTILLES: Cuba, Puerto Rico, St. Croix. 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, October 1898. 492 
