182 LONGICORNIA. 
HYLETTUS. 
Hylettus, Bates, Ann. & Mag. Nat. Hist. ser. 3, xiv. p. 11; Lacordaire, Gen. Col. ix. p. 787. 
Lacordaire added to the characters which I published of this genus an important 
one derived from the presence of a cicatrice, narrow, but well defined, at the apex of 
the first joint of the.antenne. The species, which are of much larger size than those 
of the preceding genus, are four in number, all Tropical-American. 
1. Hylettus cenobita. (Tab. XIII. fig. 19.) 
Leiopus cenobita, Erichson, Wiegm. Archiv, i. p. 145 (1847 7°). 
Hylettus cenobita, Bates, Aun. & Mag. Nat. Hist. ser. 3, xiv. p. 11°; id. Trans. Ent. Soc. 1872, 
p. 221°. 
Hab. Nicaracva, Chontales (Belé*, Janson).—SoutnH America, Peru, Amazons ?. 
ASTYNOMUS. © 
Astynomus, Castelnau, Hist. Nat. Ins. Col. ii. p. 463 (partim). 
Aidilis, Serville, Ann. Soc. Ent. Fr. 1835, p. 32 (partim). 
Astynomus, Thomson, Syst. Ceramb. p. 29; Lacordaire, Gen. Col. ix. p. 789. 
As at present constituted this genus is confined to the Tropical-American fauna ; 
but its limits are not well defined, and many of the species approach closely the North- 
American genus Urographis recently described by Dr. Horn. 
1. Astynomus mucoreus. (Tab. XIII. fig. 20.) 
Astynomus mucoreus, Bates, Trans. Ent. Soc. 1872, p. 221’. 
Hab. Mexico, Cordova, Playa Vicente (Sal/é) ; GuateMaLa, Teleman, El Zumbador, 
Panzos (Champion) ; Nicaracua, Chontales (Belé 1, Janson).—SoutH America, Colombia, 
Venezuela. 
This species would perhaps be better placed in the allied genus Zoroneus, its antenne 
being much longer and more slender than in the typical Astynomi ; it differs, however, 
from Toroneus in having well-developed thoracic tubercles. 
2. Astynomus setiger. (Tab. XIV. fig. 7.) 
Astynomus setiger, Bates, Trans. Ent. Soc. 1872, p. 222°. 
Hab. Mexico, Playa Vicente (Sallé); GuatemaLa, Cerro Zunil, San Isidro, Las 
Mercedes, San Juan (Champion); Nicaracua, Chontales (Belt '). 
The antenne in this and the following species are but little longer than the body in 
either sex, and perceptibly thicker than in A. dorsalis (the type of the genus). These 
features and the setose surface of the elytra bring them within the definition of the 
genus Urographis, from which, on the other hand, they differ much in the form of the 
thorax and in facies. | 
