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Genus Sporetus, nov. gen. 
Body elongate-oblong, free from inequalities on the surface. 
Antennse twice the length of the body, setose both above and 
beneath. Thorax subquadrate, rounded on the sides, and not 
widened from the front, the lateral spines forming small obtuse 
tubercles situated some distance from the hind angles. Elytra 
oblong, clothed with stiff hairs, simply and briefly truncated at 
the tip. Thighs clavate ; hind tarsi with the basal joint elon- 
gated. Apical abdominal segment with both dorsal and ventral 
plates notched imthe male, forming a sheath to the more or less 
exserted ovipositor in the female, the dorsal plate of which is 
pointed, the ventral truncate. 
The few species combined to form this group difier from all 
the other genera of setose Leiopodinse in the oblong narrow 
form of their bodies and the subquadrate shape of the thorax, 
with the shortness of its lateral spines. In colour they are 
either blackish with ashy spots, or grey sprinkled with blackish. 
§ 1. Ovipositor of the ? short, scarcely apparent beyond the tips of the 
elytra ( Chcstissus). 
1. Sporetus [Chcetissus) porcinuSy n. sp. 
S. elongatus, hirsutus, griseus, fusco conspersus : capite thoraceque 
elytris angustioribus. Long. 2f lin. $ . 
Head dull greyish. Antennse brownish, with the bases of the 
joints from the fourth pallid; setose both above and beneath. 
Thorax grey, with a few indistinct darker markings. Elytra 
rather wider than the head and thorax, and widened towards 
two-thirds their length, truncated at the apex, with both angles 
distinct; surface clothed with long black bristles, grey, with 
dusky specks lying over the setiferous punctures and arranged 
in lines. Body beneath and legs dull testaceous, clothed 
with grey pile ; thighs not abruptly clubbed ; tarsi very mode- 
rately elongated. Ovipositor short ; apical dorsal plate of the 
abdomen broad at the apex, and produced into a point in the 
middle. 
S. Paulo, Upper Amazons. 
This species, in the length of the ovipositor of the female, 
forms a connecting link between Sporetus and Trichonius ; the 
terminal dorsal plate, although short and broad, is pointed at 
the apex, and not rounded off as in Trichonius. 
§ 2. Ovipositor of the ? long, projecting to the length of a line beyond 
the tips of the elytra ; dorsal plate tapering to a sharp point. 
2. Sporetus seminalis, n. sp. 
S. fusco-niger, cinereo conspersus : thorace medio cinereo quadri- 
