228 MOLLUSCA. 
proportionately large aperture, which even exceeds half the length of the whole shell, 
and the convex, somewhat blunt spire, this lastementioned character bringing it nearer 
O. delattret. | 
The locality “Mexico” (Biart *) for the typical form I have omitted, as it is too 
vague; and that of ‘ Vera Cruz,” quoted by me [Malak. Blatt. xii. p. 70 (1868)], was 
caused by an erroneous identification with an unusally large specimen of O. sulfureus. 
The specimen determined by the Rev. H. B. Tristram as Bulimus moricandi proves by 
its slender spire to be a young O. sulfureus (cf. anted, p. 225). 
Strebel’s Bulimula chiapasensis, form C, Beitr. Mex. Land- und Siissw.-Conch. v. p. 71, 
t. 6. fig. 18, closely resembles O. moricandi in the size and form of the aperture ; but 
it has the spire distinctly more conical. ‘This shell was obtained in the northern part 
of Eastern Mexico at Paso de la Balza, near Tuzamapan, between Huatusco and 
Jalapa: I dare not identify it with either 0. moricandi or O. chiapensis. 
39. Otostomus moritinctus, sp.n. (Tab. XIV. figg. 9, 9a, 6, 10, 104.) 
Testa rimata, ovato-oblonga, sat tenuis, irregulariter striatula, nitida, isabellino-albida, fascia unica peripherica 
fusco-nigra latiuscula, strigis solitariis perpaucis fuscis et punctis nigris sparsis picta; spira conica, 
apice obtusiusculo nigricante vel fuscescente ; anfr. 6, convexiusculi, ultimus basi leviter attenuatus, sub- 
inde roseo-tinctus ; apertura dimidiam teste longitudinem squans, paullum obliqua, acuminato-oblonga, 
intus eque ac extus colorata; peristoma simplex, rectum, margine columellari tenui, leviter arcuato, ad 
rimam umbilicalem breviter reflexo et appresso. 
Long. 26-29, diam. 13, apert. 14-15 millim. 
Hab. W. Mexico: Chilpancingo, in the State of Guerrero, at an elevation of 4600 feet 
above the sea (/7. H. Smith). 
Varies somewhat in the more or less pure whitish, yellowish, or slightly reddish hue 
of the general coloration, in the more or less broad and dark peripherical band, in the 
presence, disposition, and number of the black points, which are either arrow-like or 
rounded, and in the presence or absence of a large brown streak near the aperture ; 
the base of the shell near the umbilical cleft is in some examples bright rose-coloured. 
The uppermost whorl is curiously punctured (fig. 9c). 
‘This species seems allied to 0. livescens, Pfr., but may be distinguished, apart from 
the coloration, by its larger size, more ventricose whorls, proportionately larger aper- 
ture, and more glossy appearance. In its coloration it bears a remarkable resemblance 
to O. virgultorum, Morelet, from Eastern Peru; but the latter is a more cylindrical 
shell, its last whorl being proportionately much smaller, and it has also a dark band 
round the umbilicus. 
40. Otostomus livescens. (Tab. XV. figg. 7, 8.) 
Bulimus livescens, Pfr. Symb. Hist. Helic. u. p. 48 (1842)*; Monogr. Helic. Vivent. ii. p.- 175’; 
Reeve, Conch. Icon. v., Bulimus, t. 47. fig. 304°; Philippi, Abbild. neuer Conch. iii. p. 96, 
t. 9. fig. 3°. 
