18 LONGICORNIA. 
ing joints. There isa faint raised line on the sides of several of the joints following 
the third, which indicates the margin of an obsolete groove. The femora, especially in 
the males, are much thicker than in Pantomallus, Chion, and other allied genera, resem- 
bling the robust form of the same members in Phacodes. In the markings of the 
elytra the genus bears no resemblance to Pantomallus, reminding one rather of Hespe- 
rophanes. 
The genus Osmidus of Leconte, found in Lower California, must be very closely allied 
to the present one, judging from the description. It wants, however, the antennal 
grooves. 
1. Perilasius championi. 
Rufo-fuscus, omnino subtiliter griseo incumbenti-pubescens, et sparsius erecte pilosus; scutello albo ; thorace 
vage rugoso-punctato, supra paullo inequali, tuberculis dorsalibus nitidis tribus, mediano interdum elon- 
gato, et disco utrinque linea indistincta elevata usque ad marginem posticum extensa; elytris ¢ apice 
breviter truncatis, 2 rotundatis sutura spinosa, dorso haud profunde crebre punctulatis, punctisque nitidis 
majoribus passim inspersis. 
Long. 8 usque 13 lin. GQ. 
Hab. GuatEMaa, Capetillo (Champion). 
The sparsely scattered shining punctures of the elytra are obliquely impressed, and 
each bears a stiff bristle. The antenne are altogether more robust in the male than in 
the female; and the joints from the third to the eleventh are almost exactly equal in 
length—this latter character distinguishing well the genus from Brothylus (Leconte), 
the markings of which appear to be very similar to those of our species. The eleventh 
joint is curved, and bears no trace of appendage or false twelfth joint; and all the joints 
in both sexes are rather closely and finely ciliated beneath. 
PANTOMALLUS. 
Pantomailus, Lacord. Gen. Col. viii. p. 286. 
Hburia, Serv. Ann. Soc. Ent. Fr. 1834, p. 10, 
Four or five species, all Tropical-American. 
1. Pantomallus fuligineus. (Tab. III. fig. 4.) 
Pantomallus fuligineus, Bates, Trans. Ent. Soc. 1872, p. 173. 
Hab. Nicaracua, Chontales (Belt). 
CHLORIDA. 
Chlorida, Serv. Ann. Soc. Ent. Fr. 1834, p. 31. 
Nine species, confined to Tropical America. 
1. Chlorida festiva. 
Cerambyx festivus, Linn. Syst. Nat. ed. 12, i. 2, p. 623. 
