32 MALACODERMATA. 
2. Phenolis ustulatus. 
Phenolis ustulatus (Chevr.), Gorh. Trans. Ent. Soc. 1880, p. 11°. 
Hab. Mexico1, Cordova (Sallé); Guatemata, Zapote1, Purula, Senahu, Cubilguitz 
(Champion) ; Costa Rica, Caché (Rogers). 
8. Pheenolis ochraceus. 
Phenolis ochraceus, Gorh. loc. cit. p. 11". 
Hab. Guaremaa, Vera Paz (Champion) ; Nicaracua, Chontales (Belt!). 3 2 
4, Phenolis nigricollis. 
Niger, opacus, elytris basi ultra medium pallide testaceis, pube brevi dense vestitis. Long.15 millim. $? 
Hab. Mexico, Tepansacualco, Oaxaca (Sallé). 
This highly interesting species scarcely differs in form from P. ustulatus. ‘The thorax 
is transverse, constricted at the base, a little less produced in front. The expanded 
sides form a nearly straight channel with the disk, where they commence to be reflexed. 
The scutellum is black and opaque. ‘The elytra are of a very pale yellow for rather 
more than half their length at the base; and this colour extends a little way down the 
suture. Three or four nervures are just visible, but only indistinctly so. The apical 
ventral segment is cleft and bilobed, the pygidial plate broadly bisinuate. 
A single specimen only has come under my notice. 
JETHRA. 
4Ethra, Castelnau, Ann. Soc. Ent. Fr. i. p. 133 (18338). 
Neither the limits of distribution nor approximate number of species in this section 
are yet well ascertained. The typical species are Brazilian, and are distinguished by 
the great length of the lamelle of the antenne, which sometimes equal half their whole 
length. In the Central-American species, on the contrary, the antenne are scarcely 
pectinate; yet the general construction is the same; and they more nearly resemble 
the species of the Eastern genus Vesta. But one sex (6?) is known to me. 
1. Aithra despecta. (Tab. III. fig. 3.) 
Aithra despecta, Gorh. Trans. Ent. Soc. 1880, p. 121. 
Hab. Nicaracva, Chontales (Belt!) ; Costa Rica, Caché (Rogers).—Cotomsta |, 
The Central-American specimens agree in not having the disk of the thorax infuscate. 
2. Aithra concolor. 
Aithra concolor, Gorh. loc. cit. 
Hab. Costa Rica, Volcan de Irazu (Rogers). 
