LITARGUS.—TILARGUS. 639 
LITARGUS. 
Litargus, Evichson, Naturg. Ins. Deutschl. iii. p. 415 (1856) ; Leconte, Proc. Acad. Phil. 1856, 
p. 12. | 
Litargus is probably the most numerous in species of any of the genera of Myceto- 
phagidee, and is very widely distributed. About twenty representatives are known. 
1. Litargus balteatus. 
Litargus balteatus, Leconte, Proc. Acad. Phil. 1856, p. 147. 
Hab. Norra America, Colorado River near the junction of the Gila !.—Mexuco, 
N. Sonora (Morrison), Cordova (Sallé, Hége), Mexico city, Jalapa (Hoge), Guanajuato, 
Toxpam (Saddé); Guaremaa, near the city, Zapote (Champion) ; Nicaraaua, Chontales 
(Janson) ; Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion). , 
Var. digjunctus, var.n. Supra niger, elytris maculis sex disjunctis testaceis. 
Hab. Mexico, Toxpam, Cordova (Sailé), Teapa (H. H. Smith); Brrrish Hoypuras, 
Belize (Blancaneaux); Guatemata, Zapote, Cerro Zunil (Champion). 
The type-form, as described by Leconte, has a very large pallid mark contiguous 
to the scutellum. The yellow marks, however, vary in extent, so that I have treated 
a form in which there are separated spots as merely a variety. According to an 
example from the Sallé collection, obtained from Sturm, the type-form is the 
Mycetophagus fasciatus of that entomologist. 
2. Litargus merens, sp. n. 
Subdepressus, anguste ovalis, niger ; corpore subtus, antennis pedibusque ferrugineis, antennarum clava plus 
minusve fuscescente ; elytro singulo pone medium macula transversa flavescente. 
Long. 23 millim. 
Hab. Guatemaa, Zapote (Champion) ; Panama, Volcan de Chiriqui 3000 to 4000 feet 
( Champion). 
The only form in which the elytra are dark with a single rufescent mark on each. 
It is rather narrow in shape, but a good deal rounded at the sides; the surface is 
covered with a fine yellow-grey pubescence, and the punctuation is very fine; the 
impressed line on each side of the thorax is rather long and distinct; the outer margin 
of the elytra and the base of the thorax are narrowly and obscurely yellow; the two 
rufescent marks on the elytra do not quite meet and do not extend to the side. The 
hind tarsi are long and very slender. Four specimens. 
TILARGUS. 
Litargus, subgen. Tilargus, Casey, Journ. New York Ent. Soc. viii. p. 185 (1900). 
Corpus breviter ovale, superne convexum ; palpis maxillaribus apicem versus evidenter incrassatis, 
Although closely allied to Litargus, this seems to be a natural genus, the shorter 
