212 MOLLUSCA. 
should not have been found by other collectors, but I am unable to refer them to any 
other known Mexican species. 
I have already stated ® that the locality Pazquaro (Patzcuaro), State of Michoacan, 
is given in Pfeiffer’s first description? only for the variety 8, “fasciis latis tessellatis 
violaceo-fuscis,” which is probably my O. fenestrellus ; but in his other work ? it stands 
alone for the whole species, owing possibly to the unintentional omission of the 
locality Tenango*. Neither Fischer and Crosse nor Strebel have noticed this. 
Dr. Pfeiffer? quotes also “Seba, Thesaurus, iii. t. 39. fig. 49,” as representing this 
species; but as the figure does not show the aperture the identification remains 
doubtful. 
16. Otostomus jonasi. (Tab. XIII. figg. 11-13.) 
Bulimus jonasi, Pfr. in Philippi’s Abbild. neuer Conch. ii. p. 125, t. 5. fig. 4 (1846) *; Monogr. 
Helic. Vivent. ii. p. 107°; in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Bulimus, p. 168, 
t. 50. figg. 11, 12°; Deshayes, in Férussac’s Hist. Nat. Moll. Terr. 11. 2, p. 188, t. 150. 
figg. 17, 18*; Reeve, Conch. Icon. v., Bulimus, t. 55. fig. 363 °. 
Bulimus (Leiostracus) jonasi, Albers, Die Helic. ed. 1, p. 156 (?)°; Pfr. in Malak. Blatt. u. p. 153 
(1855) 7, 
Otostomus (Leiostracus) jonasi, H. & A. Adams, Gen. Moll. ii. p. 151°. 
Bulimulus (Mormus) jonasi, v. Mart. in Albers’s Die Helic. ed. 2, p. 216°; Binney, Am. Journ. 
Conch. vii. p. 182 (1872) (jaw, radula) *°. 
Bulimulus (Scutalus) jonasi, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 525, t. 23. 
figg. 7, 7a". 
Bulimulus jonasi, v. Mart. in P. Z. S. 1875, p. 648"; O. Stoll, Guatem. Reisen, p. 53 (1886) ”. 
Otostomus (Mormus) jonasi, v. Mart. in Conch. Mittheil. ii. p. 193. 
Hab. CentraL GuateMALa: Environs of the city of Guatemala (Sallé!'; Stoll }) ; 
Antigua and Amatitlan (Stoll) ; Duefias (Champion). 
'N. Guaremata: Vera Paz (by error Vera Cruz) (Delattre1-?5911); Coban 
(Salvin !*). 
Costa Rica (van Patten, in mus. Berol.). 
According to Dr. O. Stoll 1° (and in his MS. notes), this is the most common species 
of the genus on the Llano, or Plain, of the capital of Guatemala, though very 
irregularly distributed, in some spots very frequent, in others absent, perhaps owing to 
the pasture being burnt from time to time; it lives on the shrubs of Baccharis salici- 
folia (ord. Composite), and is also to be seen in the same localities in the dry season, 
suspended to the leaves and twigs, and closed by a diaphanous thin epiphragma, while 
other species are concealed in their hiding-places. This shell is generally found at 
* There are about twenty localities of this name in the Republic of Mexico. To judge from the other 
localities for the species, it is probable that the one near Chalco, between the city of Mexico and Puebla, is 
intended. 
