640 MYCETOPHAGIDZ. 
and broader form being accompanied by a difference in the palpi. The insects are 
much less fragile than are the species of Litargus. The club of the antenne is 
3-jointed, the joints being much shorter than in Litargus. The front coxe are 
very slightly distant. The first ventral plate behind the hind coxe is only about as 
long as the second segment. I have not seen any species that can be referred to this 
genus except those four described below. 
I think these undoubtedly belong to the subgenus Tilargus of Casey. Although he 
gives no characters apart from those of the species, yet as I include L. tetraspilotus 
it is clear that the name he proposes had better be adopted. 
1. Tilargus tetraspilotus. (Tab. XIX. fig. 10.) 
Litargus tetraspilotus, Leconte, Proc. Acad. Phil. 1856, p. 14’. 
Breviter ovalis, sat convexus, subnitidus, minus dense pubescens, niger; antennis pedibusque rufo-testaceis, 
his clava nigricante; elytris guttis quatuor transversis testaceis. 
Long. 2 millim. 
Hab. Nortsu America, Southern and Western States 1.—Mexico, Jalapa, Tapachula 
(Hoge), Cordova (Hége, Sallé), Motzorongo (Flohr), Orizaba (H. H. Smith); Guate- 
MALA, near the city, Zapote, Capetillo, Duefias (Champion); Nicaracua, Chontales 
(Janson) ; Panama, Volcan de Chiriqui (Champion). 
Antenne short, first two joints of the club transverse, eleventh joint about as long 
as broad. Thorax very short, much narrowed in front, very slightly notched or 
impressed on the base each side of the scutellum; a little red at the hind angles and 
side, finely granulate. Elytra black, with four subequal, large, transversely oval marks, 
placed two in front of the middle, two behind the middle; feebly and not densely 
punctate and pubescent, the pubescence exhibiting a somewhat seriate appearance. 
This is a common insect in Central America and does not vary very much. 
2. Tilargus debilis, sp. n. 
Breviter ovalis, subtiliter pubescens, subnitidus, testaceus; prothoracis disco, pectore, abdomine pedorumque 
basi fuscescentibus ; elytris irregulariter nigro-maculatis. 
Long. 2 millim. 
Hab. Mexico, near the city (Hoge, H. H. Smith), Toxpam (Sallé), Omilteme, Chil- 
pancingo (H. H. Smith); Guaremaa, Duefias, Capetillo, San Gerénimo (Champion). 
Readily distinguished by the colour from 7’. tetraspilotus. Eyes rather small. 
Thorax very short, much narrowed in front, finely punctate; lateral margins of the 
thorax and elytra very fine; elytra finely punctate, a little shining, the pubescence 
not seriate, the black spots very variable, but never entirely absent. Fifteen examples. 
This insect is variable as regards colour. ‘The specimen from Toxpam is immature 
and perhaps belongs to another species, the marks on the elytra forming a definite 
pattern as in Litargus. 
