38 HETEROMERA. 
than the thorax, convex, rounded at the sides, closely, evenly, and rather coarsely punctured, with shallow 
but distinct grooves, the punctures not arranged in rows. 
Length 94 millim. 
Hab. Mexico, Tehuacan (ége). 
One example. Larger, broader, and more convex than either 7. atratus or T. tibialis, 
a 
Group ZOPHERIDES. 
Two genera (Zopherus and Nosoderma) represent this group in Central America; the 
former is peculiar to the New World, and has no very near ally; the latter is perhaps 
restricted to the Neotropical Region. 
ZOPHERUS. 
Zopherus, Castelnau, Hist. Nat. ii. p. 205 (1840) ; Sol. Ann. Soc. Ent. Fr. 1841, p. 39; Lac. Gen. 
Col. v. p. 91; Horn, Trans. Ent. Soc. Phil. (1867) p. 159. 
This genus has its head quarters in Central America, and most of the finest species 
are peculiar to that country; one (Z. chiliensis) extends from Yucatan into South 
America—to Colombia and Venezuela; several small black species (Z. tristis, concolor, 
guttulatus, opacus, and gracilis) are found in New Mexico, Arizona, Texas, &c.; one 
(Z. haldemanni, Horn) in Texas and Northern Mexico; and one (Z. elegans) of which the 
locality was not mentioned by the describer. Some of the North-American species may 
eventually be found in Northern Mexico. The different species frequent dry elevated 
districts, and desert regions, and are found under loose bark, logs, fallen trunks of cacti, 
&c. ; and sometimes crawling on stumps in the dry season. One species is known to 
the natives of Guatemala by the name of “cameleon.” They are said to live a very 
long time without food, and living examples have been exhibited at the meetings of the 
Entomological Society in London, and also in Paris. The species are difficult to 
separate, and one or two have been described on insufficient material, upon single 
examples; abraded or greasy individuals are rather deceptive ; the number and arrange- 
ment of the tubercles of the elytra and thorax is subject to variation, and often different 
on one side from the other. 
Sect. 1. Elytra bituberculate at the apex. 
1. Zopherus chiliensis. 
Zopherus chiliensis, Gray, Griff. Anim. Kingd. p. 796, t. 124. f. 3 (1832) ’. 
Zopherus bremei, Guer. Rev. Zool. 1844, p.18; Bréme, Ann. Soc. Ent. Fr. 1844, p. 807, t. 9. f. 2”. 
Hab. Mexico’, Yucatan (coll. F. Bates), Progreso in Yucatan (Hoge), Valladolid in 
Yucatan (Gaumer); GuateMaua ; Satvapor; NICARAGUA (Sallé), Chontales (Belt, Janson). 
—CoLomBIA?; VENEZUELA (coll. F. Bates). 
