TILLOMORPHA.—EUDERCES. 59 
TILLOMORPHA. 
Tillomorpha, Blanchard, in Gay, Hist. d. Chile, Zool. v. p. 482 (1851) ; Lacord. Gen. Col. ix. p. 90; 
Leconte, Smiths. Misc. Coll. no. 265, pt. 11. p. 320. . 
The latest definitions of this genus given by authors leave its limits in a very un- 
‘satisfactory state. According to Lacordaire and Leconte, simple, rounded eyes are an 
essential feature; but the type of the genus, 7. lineoligera, of Chili, has the usual 
reniform eyes of the Cerambycide. In the Munich Catalogue an Australian species is 
enumerated in the genus, which is unlikely to be its true place. If the views of the 
authors above named are correct, the genus ranges from Chili to the middle States of 
North America, including Brazil, Colombia, and Mexico. 
1. Tillomorpha balteata. 
Clytus (Tillomorpha) balteatus, Chevr. Ann. Soc. Ent. Fr. 1860, p. 503°. 
Hab. Mexico, Tuxpam (Sallé +). 
This species, according to the description, seems to have no near resemblance to the 
genus. 
2. Tillomorpha hematocephala. 
Tillomorpha hematocephala, Chevr. Ann. Soc. Ent. Fr. 1862, p. 534. 
Hab. MExico. 
EU DERCES. 
Euderces, Leconte, Journ. Acad. Phil. ser. 2, 11. p. 30; id. Smiths. Misc. Coll. no. 265, pt. ii. p. 320. 
Only four species properly belonging to this genus have been described, all North- 
American. The following is strictly congeneric with Leconte’s type E. picipes:— 
1. Huderces reticeps. 
Parvus, nigro-piceus; antennis, pedibus elytrisque rufo-castaneis, nitidis, his fascia recta mediana eburnea ; 
capite reticulato-punctato; pronoto longitudinaliter strigoso; thorace postice valde, antice minus con- 
. stricto, medio paullo dilatato et convexo. 
Long. 27 lin. 
Hab. Guaremata, near the city, 5000 feet (Salvin). 
Distinguished, besides its minute dimensions, by the net-like sculpture of the surface 
of the head and by the form of the thorax, which is somewhat constricted near its anterior 
margin and very greatly narrowed, as well as depressed, at the base, the middle portion 
being dilated (more so in some examples than others) and convex. The antenne are 
very similar in form and proportions of the joints to those of E. picipes. THe elytra 
have only a slight and obtuse elevation at the base on each side, behind which they 
are depressed, becoming moderately convex again posteriorly, with rounded apices ; 
their surface is shining and sparsely punctured, each puncture bearing a long erect 
bristle. The femora are abruptly clavate, and the hind tarsi short, as in E. picipes. 
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