60 MOLLUSCA. 
(about 1850) *; Morelet, Journ. de Conch. iii. p. 42, t. 1. fig. 5°; Pfr. Monogr. Helic. 
Vivent. iii. p. 518”. 
Glandina petiti (Desh.), Morelet, in Journ. de Conch. iii. p. 37°; v. Mart. in Albers’s Die Helic. 
ed. 2, pp. 26, 28"; Strebel, Beitr. Mex. Land- und Siissw.-Conch. ii. t. 8. figg. 27, 27 a-e, 
t. 13. figg. 27 7, 287”. 
Oleacina petiti, Gray, Cat. Pulm. p. 36”; Pfr. Monogr. Helic. Vivent. iv. p. 643 ”. 
c: rubromarginata, 
Achatina rosea, var. y, Pfr. Monogr. Helic. Vivent. ii. p. 294”. 
Glandina petiti, Form B, Strebel, Beitr. Mex. Land- und Siissw.-Conch. ii. p. 48, t. 8. figg. 29, 29 a, b*. 
Hab. S.E. Muxico: Teapa, State of Tabasco (H. H. Smith; Forms a and 6); Mexico, 
without precise locality (Hége). 
N. Guatemala: Chacoj in the Polochic Valley (Champion ; Form 8). 
S. GUATEMALA: Retalhuleu in the Costa Grande, 710 feet above the sea (Stoll ; 
Form 6); El Reposo 800 feet (Champion; Form 6); Hacienda de San Francisco 
Miramar, Costa Cuca 2500 feet, and Cholluitz on the slope of the Volcan de 
Santa Maria, 2000 feet (Stol/; Form a). 
Honpuras (Dyson *3; Form c). 
Nicaragua (McMiel 3, Bland 1°, Janson, Berendt ‘1; Form a); on the north of the 
Lake (Deshayes  ; Form 6); throughout the savana region, under the leaves of 
Bromelia pinguis, at Granada on the N.W. side of the Lake, Mesapa, San 
Ubaldo, &c. (Tate® ; Form a); vicinity of Lake Nicaragua 1! 21, 
Costa Rica: San José (Koschny 4; Form c). 
Panama (Paz 10). 
This species is also quoted from Mexico by some authors, but without nearer 
indication of locality or collector: Fischer and Crosse are probably right in limiting 
this statement to the southernmost provinces. 
By Pfeiffer and Fischer and Crosse, a length of 60 millim. is given to this species, 
according to the figures in Férussac (t. 136. figg. 8, 9) and Reeve (fig. 46a); but I have 
never seen a specimen so large in size. 
Helix rosea, Férussac (Prodrom. no. 356), is, according to the locality (Florida) and 
two of the three synonyms, conspecific with the North-American G. truncata (Gmel.), 
which is represented by the figures left by Férussac on t. 135. fig. 3. 
G. alabastrina [ Albers, in Malak. Blatt. i. p. 220 (1852); Pfr. Novitat. i. p. 43, t. 11. 
figg. 5, 6 (Achatina); Monogr. Helic. Vivent. iv. p. 638 and vi. p. 278 (Oleacina) ; 
Fischer & Crosse, Miss. Scient. Mex., Mollusca, i. p. 120; and Strebel, Beitr. Mex. Land- 
und Stissw.-Conch. ii. p. 38, t. 9a. figg. 82, 32.4, 6], based on one specimen, from Central 
America, long. 31, diam. 22, apert. 23 millim., is probably an unusually large and solid, 
but quite discoloured specimen of G. cumingi. Another specimen, from Tabasco [Pfr. 
Monogr. Helic. Vivent. vi. p. 278: Strebel, op. cit. p. 39, t. 9. figg. 82 c-82¢], and 
