ORTALICHUS. 187 
6. Ortalichus obductus. 
Orthalicus obductus, Shuttl. Notitie Malac. i. p. 62, t. 3. figg. 1-3!; Pfr. Monogr. Helic. Vivent. 
iv. p. 5877; Mousson, in Malak. Blatt. xvi. p. 179 (1869) *; Fisch. & Crosse, Miss. Scient. 
Mex., Mollusca, i. p. 456*; v. Mart. Die Binnenmoll. Venez. p. 33, t. 2. figg. 15a, 6 (jaw 
and radula)’; Binney, Ann. Lye. N. York, xi. p. 37, t. 6. fig. iii. (radula) (1874) ° ; Strebel, 
Beitr. Mex. Land- und Siissw.-Conch. v. pp. 33, 34, t. 3. figg. 4a, b, 7 a,b, c, t. 3. fig. 6 
(radula) *. 
flab. British Honpuras: Belize, in the woods (Bocourt *). 
N. Guaremata : Coban (Sarg 7). 
CentraL GuaTeMALA: San Gerénimo (Champion). 
Nicaragua (Lévy 4; coll. Dohrn’). 
Panama (Cuming *), Islands in the Bay of Panama (Mac Miel °). 
VENEZUELA: “ Barquimeseto,” probably Barquisimeto, S.E. of Valencia (from the 
late dealer Hd. Miiller}*); on the borders of the lake of Valencia (Moritz) ; 
Puerto Cabello (Strebel *). 
Ecuapor: Nabon, 8000 feet above the sea (Wallis *). 
Well-characterized adult specimens I know only from Venezuela. Cuming’s 
specimen from Panama! was a young shell; Sarg’s specimens from Coban are a little 
different, form B of Strebel’, and somewhat like a very dark-coloured O. princeps. 
‘Those from Belize and Nicaragua I have not seen. 
7. Ortalichus boucardi. (Tab. XI. figg. 4,5; 11, var.) 
Orthalicus boucardi, Pfr. P. Z.S. 1860, p. 138, t. 51. fig. 7°; Malak. Blatt. vii. p. 16 (1861) °*; 
v. Mart. Malak. Blatt. xii. p. 87 (1865) °; Pfr. Monogr. Helic. Vivent. vi. p. 200°; Fisch. 
& Crosse, Miss. Scient. Mex., Mollusca, i. p. 451, t. 18. figg. 8, 3a, 6°; Strebel, Beitr. 
Mex. Land- und Siissw.-Conch. v. pp. 40, 41 (forms A, B), t. 1. figg. la, 2a-g’. 
Hab. S.W. Mexico: Villa Alta in Oaxaca, on the slope of the central elevated plateau 
towards the Rio San Juan, copiously (Hége); Oaxaca (Hége); Mountains of 
Betaza, 20 leagues from Oaxaca (Boucard?>°); Cerro Negro, Tehuantepec 
(Sumichrast®); Tehuantepec (Strebel °, Richardson). 
This species is easily recognizable by the predominant white colour, with a few 
black streaks, which are sometimes very widely separated, seldom bent in zigzag; 
these streaks are often shortened into mere spots, and they are sometimes of a pale 
rusty colour at the sides. The apex is apparently always white or pale yellowish. 
The largest specimen (long. 56, diam. and apert. 30 millim.) is from Tehuantepec. The 
specimens collected by Hoge at Oaxaca have more numerous stripes, thus approaching 
O. zoniferus. 
24* 
