HELICINA. 4] 
(1864), p. 247, and (3) xvii. (1866), p. 47] as H. barbata. Ihave seen no Venezuelan 
specimens, 
Sowerby’s figures 217 & 218, Thes. Conch. iii. t. 271, of a shell from the island of 
St. Thomas, and Reeve’s fig. 250, Conch. Icon. xix., Helicina, t. 29, seem not to belong 
to this species, as they are too much pointed at the tip. 
VII. Spiratim lirate, unidentate. (Poenia, H. & A. Adams.) 
29. Helicina lirata. (Tab. I. fig. 18, showing anim.) 
Helicina lirata, Pfr. in Zeitschr. f. Malak. 1847, p. 150’; Martini & Chemnitz, Syst. Conch.-Cab. 
ed. 2, Helicina, no. 6, p. 14, t. 4. figg. 40-43 °; Monogr. Pneum. Vivent. i. p. 341° & un. 
p. 180*; Gray, Cat. Phaneropn. p. 246°; Sow. Thes. Conch. iii. p. 281, t. 268. figg. 88, 
89°; Reeve, Conch. Icon. xix., Helicina, t. 14. fig. 1217; Strebel, Abhandl. Geb. Naturw. 
Ver. Hamb. vi. 1, p. 21, t. 1a, & t. 2. figg. 8, 8a"; Tristr. P. Z. S. 1863, p. 413°. 
Helicina lyrata, Angas, P. Z. 8. 1879, p. 484°. 
Helicina unidentata (Pfr.), Sow. loc. cit. t. 268. fig. 87"'; Reeve, loc. cit. t. 14. fig. 122”. 
Hab. E. Muxico: Vera Cruz, at the ‘“bajadas,” on the ground beneath shrubs 
(Strebel 8). 
S.& S.E. Mexico: Chiapas (Ghiesbreght +) ; Teapa and San Juan Bautista in Tabasco 
(H. H. Smith). 
Yooatan °7 (Hegewisch 135), 
N. GUATEMALA: mountain forests of Vera Paz (Salvin ®). 
S. GuaTEeMALA : Retalhuleu, in the woods, on the ground, never ascending plants (Stol/). 
Venezve.a (Tams, Engel, and Starke, in mus. Berol.). 
Var. 
Helicina rusticella, Morelet, Test. Noviss. i. p. 21 (1849) *. 
Helicina unidentata, var., Pfr. Monogr. Pneum. Vivent. i. p. 341“; Gray, Cat. Phaneropn. p. 246”. 
Hab. Yucatan: Island of Carmen, in the Gulf of Campeche (Morelet 13141). 
Var. 
Helicina unidentata, Pfr. in P.Z. S. 1848, p. 124°; Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, 
Helicina, no. 5, p. 14, t. 9. figg. 14-17'7; Monogr. Pneum. Vivent. i. p. 341; Gray, Cat. 
Phaneropn. p. 346 °. 
Hab. Wonrpuras (Dyson 16 17), 
Var. 
Helicina semistriata, Sow. Thes. Conch. iii. p. 281, t. 268. fig. 86%; Tate, in Am. Journ. 
Conch. v. p. 159 (1870) *. 
Hab. N. Panama: Boca del Toro, Chiriqui, in the woods and coco-nut groves (@abb"). 
It seems that the distinction between the above-named species cannot be maintained. 
According to Pfeiffer’s original figures, H. wnidentata is rather flat and more rounded 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, Apri/ 1891. 6 
