SUCCINEA. 337 
6. Succinea guatemalensis. (Tab. XIX. fig. 9.) 
Succinea guatemalensis, Morelet, Test. Noviss. i. p- 16 (1849)*; Pfr. Monogr. Helic. Vivent. iii. 
p- 17°; Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 667, t. 26. figg. 11, lla’. 
Succinea, sp., Biolley, Moluscos terr. y fluv. de Costa Rica, 1897, p. 15 (part.) *. 
The chief distinguishing features of this species seem to be the fine and somewhat unequal striw, the pale 
isabelline colour, and the very faint lustre of the surface. The whorls are only a little convex, the upper 
part of the last one being rather flattened compared with the two upper whorls, which are distinctly 
convex: this is not expressed in Fischer and Crosse’s figure. The reddish hue of the first whorl is 
seen in some of my specimens from Antigua, but is wanting in those collected by Dr. Stoll in the city of 
Guatemala, while it is mentioned by Morelet’ for his examples from the same city. Whorls 3-33. The 
specimens from Costa Rica want also the reddish colour on the first whorl; those from Turubares are 
unusually large, but thin and fragile. 
Long. 15, diam. 8-9; apert. long. ?, lat. ? millim. (Morelet). 
» 133, 4, 94; ” 9, 5 6 ,, (Fischer & Crosse’s figure), 
» 14, » 8; ” 9, » 6 ,, (largest specimen from Antigua). 
» i, » 83 9 8, , 5 ,, (Stoll’s largest specimen from Guatemala city). 
” 92, oy) 6 3 ” 63, ” 35 ” 
» 2, 9 53 3 5, », 34 ,, (specimen from Panzos). 
» 14, » 833 » 10, , 5  ,, (specimen from Turubares, Costa Rica). 
ie oD, » O§ ” 63, , 3 4, (specimen from Cascadas, Costa Rica). 
Hab. N. Guatemata: Panzos (Conradt). 
CENTRAL GUATEMALA: city of Guatemala, on the banks of small streams (Morelet 1~*) 
and on moist walls (Stol/). 
W. GuateMaLa: Antigua, on moist spots on the aqueduct (Stol/). 
FE. Costa Rica: Turrialba, 500 metres above the sea, on the Atlantic slope (Pittier, 
Biolley *). | 
S.W. Costa Rica: Turubares, 200 metres above the sea (Biolley); Rio de las 
Cascadas, at the foot of the great fall, in the valley of the Rio Diquis (Pitter, 
Febr. 1896). 
7. Succinea campestris. 
Succinea campestris, Say, Journ, Acad. Phil. i. p. 281 (1817)'; Binney, Complete Writings of Say, 
p. 12°; Pfr. Symb. Hist. Helic. ii. p. 56°; Monogr. Helic. Vivent. ii. p. 524 (excl. syn. 
Gould)‘; Férussac, Hist. Nat. Moll. Terr. ii. t. 11. fig. 12°; Binney, Terr. air-breath. 
Moll. N. Am. ii. p. 67, t. 675. fig. 1°; Man. Am. Land-Shells, p. 443, fig. 480"; Tryon, 
Am. Journ. Conch. ii. p. 281, t. 17. fig. 4°; Pilsbry, Proc. Acad. Phil. 1891, p. 318° (not 
Succinea campestris, Pfr. in Martini & Chemnitz, nor Dekay, Zool. New York). 
Succinea inflata, Lea, in Proc. Am. Phil. Soc. ii. p. 81 (1841) *°; Obs. Gen. Unio, iv. p.5"; Pfr. 
Monogr. Helic. Vivent. ii. p. 520"; and in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, 
- Daudebardia, Simpulopsis, Vitrina, and Succinea, p. 49, t. 5. figg. 9-11"; Binney, Terr. 
air-breath. Moll. N. Am. iv. p. 34, t. 80. fig. 11”. 
Hab. Nortu America: South Carolina, Georgia, and Florida. 
CentraL Mexico: Lake Texcoco, near the city of Mexico (Heilprin °). 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, October 1898 43 
