54 Mr. H. W. Bates on the Longicom Coleoptera 



curvatis, dorso brunneo vittis posticis duabus nigris intus albo 

 notatis : elytris breviter setosis, brunneis, postice nigro alboque 

 guttatis, apice rotundatis. Long. 3^ lin. c? • 



Head dingy brown. Antennse scarcely twice the length of the 

 body, setose, the bristles much longer and more numerous be- 

 neath than above ; reddish, tips of all the joints blackish j bases 

 of the joints, from the fourth, pallid. Thorax broad, lateral 

 spines very thick, large, and pointed, slightly curving and placed 

 at a short distance from the posterior angles; surface anteriorly 

 clear brown, posteriorly dusky, with two indistinct black vittse 

 not reaching the front margin, and dotted on their inner sides 

 with whitish ; there are also other white specks on the base and 

 sides. Elytra rather more convex than in the allied species, 

 scarce perceptibly truncated at the tips ; surface clothed with 

 shortish bristles, which are decumbent, instead of suberect as in 

 the preceding species, and which arise from punctures placed in 

 rows independent of the smaller irregular basal punctures ; the 

 colour is purplish brown, with a few indistinct black streaks and 

 dots, and, behind the middle, a number of white specks. Body 

 beneath and legs reddish, clothed with ashy pile ; legs hirsute, 

 but not bristly. 



S. Paulo, Upper Amazons. 



Genus Sporetus, nov. gen. 



Body elongate-oblong, free from inequalities on the surface. 

 Antennae 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 in the 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 differ 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 heyond the tips of the 



elytra {Chcetissus). 



1. Sporetus (Chatissus) porcinus, n. sp. 



S. elongatus, hirsutus, griseus, fusco conspersus : capita thoraceque 

 elytris angustioribus. Long. 2| lin. $ . 



Head dull greyish. Antennse brownish, with the bases of the 



