LIODERMA. 187 
LIODERMA. 
Leionota (Dej.), Marseul, Monogr. in Ann. Soc. Ent. Fr. 1858, p. 196 (olim). 
Lnoderma, Marseul, loc. cit. 1857, Cat. p. 469. 
Authors have assigned about thirty species to this genus, which differs from Hololepta 
chiefly in the lesser breadth of the prosternum. It is not, however, a well-defined 
genus, and several species in the catalogue might perhaps with equal reason be placed 
in Hololepta Two species are recorded from Africa, the others being from the 
American continent or the Antilles. The species are similar in habits to Hololepta. 
1. Lioderma yucateca, 
Leionota yucateca, Mars. Monogr. in Ann. Soc. Ent. Fr. 1853, p. 208, t. 5. fig. 1, 3’. 
Lioderma yucateca, Mars. loc. cit. 1857, Cat. p. 469, & 1860, p. 606. 
Leionota grandis, Mars. loc. cit. 1853, p. 204, t. 5. fig. 2, 9”. 
Lioderma grandis, Mars. loc. cit. 1857, Cat. p. 469. 
Hololepta princeps, Lec. Proc. Ac. Phil. 1859, p. 310°. 
Hab. Nort America, California ?.—Mexico, Oaxaca (Laferté & Chevrolat), Puebla, 
Guanajuato, Vera Cruz, Cuernavaca (Sallé), Esperanza, Mexico city, Jalapa, Acapulco 
(Hoge), Yucatan (Pilate, Gaumer); t Guatemata (Sallé). 
2. Lioderma dorcoides, sp. n. (Ziodema dorcoides, Tab. IV. fig. 20.) 
Elongato-parallelum, nigrum, nitidum ; mandibulis magnis basi validis bidentatis; fronte ineequali, utrinque 
brevistriata ; pronoto lateribus interrupte marginato, utrinque profunde bisulcato, angulis anticis punctatis ; 
elytris margine inflexo levi, sulco subhumerali rugoso utrinque abbreviato, striis 1* brevi, 2* integra; pro- 
pygidio extus late, pygidioque immarginato et sat dense, punctatis; tibiis anticis 4-, posticis 3-dentatis. 
Long. 12-13 millim. 
Hab. Mexico, Esperanza (Hoge). 
This species agrees in some of its characters with L. cacti (Lec.); but it is easily 
distinguished by the mandibles being serrulate, with a large blunt tooth at their base, 
and by the pygidium being immarginate. The prosternal keel is also narrower 
anteriorly, and is very straight. The four examples before me appear to be all 
males. 
3. Lioderma cacti. 
Hololepta cacti, Lec. Ann. Lyc. N. York, v. p. 162'; Mars. Monogr. in Ann. Soc. Ent. Fr. 1853, 
p. 220%. 
Lioderma cacti, Mars. loc. cit. 1857, p. 400, t. 10. fig. 5 *, & 1860, p. 606°. 
Hab. Norra America, San Diego in California } 2 3.—MeExico 4, Hacienda de Bleados 
(Dr. Palmer), Guanajuato (Sallé), Tula in Hidalgo, Jalapa, Esperanza (£76ge). 
Occurs in rotten masses of Opuntia. 
2 B* 2 
