OTOSTOMUS. 225 
36. Otostomus tripictus, (Tab. XIV. figg. 11, 11 a, var.) 
Bulimus tripictus, Albers, in Malak. Blatt. iii. p. 97 (1857) *; Pfr. Monogr. Helic. Vivent. iv. p. 468° ; 
v. Mart. in Jahrbuch d. deutschen Malak. Ges. iii. p. 256°; Angas, P. Z. S. 1879, p. 478°. 
Bulimulus rhodotrema, v. Mart. in Malak. Blatt. xv. p. 156 (1868) °. 
Bulimus rhodotrema, Pfr. Novit. Conch. iii. p. 463, t. 101. figg. 10, 11°; Monogr, Helic. Vivent. 
vill. p. 1467. 
Hab. Costa Rica (coll. Mousson 12, Carmiol ®-1, Gabb 4), 
b, hoffmanni: gracilior, fascia supera et infera simplice, media sola maculosa. Long. 19, diam. 93, apert. 
103 millim. (Figg. 11, 11 a.) 
Hab. Crntrat Costa Rica: Woods of San Lorenzo de Dota, 1300 metres above the sea 
(Pittier). 
S.W. Costa Rica: Heredia, on trees (Carl Hoffmann, 1856). 
Easily to be recognized by the ventricose shape, the broad bands composed of arrow- 
like or zigzag spots, and the bright rose-colour of both the apex and the peristome. In 
many specimens there is another, also rose-coloured, stripe somewhat behind the 
aperture ; it is the remnant of a previously formed peristome. In worn specimens the 
apex becomes greyish, but the aperture retains the rose-colour. 
Some years ago ° I was led into an error concerning this species, owing to the original 
label “ tripictus”’ being attached to a very different species, O. meridanus, Pfr., trom 
Colombia, in the collection left by Albers (cf. v. Martens, in Albers’s ‘ Die Heliceen,’ 
ed. 2, p. 218); therefore I described “rhodotrema” as new. But afterwards I satisfied 
myself that Albers’s original description 1 could not be applied at all to the shell in his 
collection, but very well to the specimens of rhodotrema ®. 
The var. hoffmanni somewhat approaches O. trazuensis in form, but it has a smooth 
shining surface to the shell, and the characteristic painting, at least in the middle band, 
conforms to the type; the tip of the shell, however, is whitish. 
37. Otostomus sulfureus. (Tab. XIV. figg. 14-18.) 
Bulimus sulphureus, Pfr. P. Z.S. 1856, p. 318, t. 35. fig. 11 *; Monogr. Helic. Vivent. iv. p. 412°. 
Bulimulus (Drymeus) sulfureus, v. Mart. in Albers’s Die Helic. ed. 2, p. 212°. 
Bulimulus (Drymeus) sulphureus, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 495, t. 23. 
fige. 8, 3a’. 
Bulimulus sulphureus, Strebel, Beitr. Mex. Land- und Stissw.-Couch. v. p. 87, t. 5. figg. Ll a—d, t. 13. 
figg. 15, 15 4, 16 (radula), t. 15. figg. 2 a-c (anatomy) ’. 
Otostomus (Drymeus) sulfureus, Vv. Mart. Conch. Mittheil. 1. p. 192°. 
Bulimus moricandi (Pfr.), Tristr. P. Z.S. 1861, p. 230°. 
Hab, Cextrat Mexico: near the city of Mexico (Hahn °). 
E. Mexico: Consolapa and Soncoautla, both near Jalapa (Strebel®) ; Mirador (Stre- 
bel ®) ; Atoyac and Orizaba (Hoge); Cordova (Sallé 1? 4). 
SE. Mexico: Teapa in Tabasco (H. H. Smith). 
N. Guatemata: Cubilguitz, north of Coban, in the dense forests of Vera Paz, 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, September 1893. 29 
