1865.] 281 



each side before the middle. Length 4 2 lines ; expanse of wings SI lines. 

 ( hie specimen. 



11. Exetastes obscurus, n. sp. 



Brownish-ferruginous, opaque, abdomen polished; antennas and sutures of 

 the thorax, black; wings pale fusco-hyaline. 



Female. — Dull ferruginous, slightly tinged with brownish, opaque, 

 very closely and minutely punctured, slightly pubescent; mandibles 

 and palpi blackish ; antennae half the length of the body, black, the 

 basal joint beneath dull ferruginous; sutures of the thorax and a sub- 

 obsolete spot on the mesothorax in front, black ; scutellum rather pro- 

 minent, somewhat shining ; metathorax densely punctured ; tegulae 

 piceous. Wings pale fusco-hyaline, with a slight yellowish tinge ; ner- 

 vures and stigma brownish ; areolet subrhomboidal, subpetiolated. Legs 

 dusky ferruginous ; the two anterior pairs pale in front, dusky behind ; 

 the four anterior coxas piceous above, as well as the posterior trochan- 

 ters ; a line on the posterior femora above, and their tibiae and tarsi 

 more or less, dusky. Abdomen robust, strongly arcuated, broader and 

 subcompressed at tip, entirely rufo-ferruginous, smooth and polished ; 

 ovipositor short. Length 5 lines; expanse of wings 9 lines. 

 One specimen. 



CEKATOSOMA, nov. gen. 

 Both/ moderately robust, smooth and highly polished. Head trans- 

 verse ; cheeks convex ; the front depressed behind the anteunae ; mid- 

 dle of the face rather prominent ; clypeus transverse, depressed, the 

 basal margin carinate, apical margin more or less emargiuate ; man- 

 dibles stout, depressed, of equal width from the base to the apex, the 

 latter obtusely bifid ; palpi slender throughout. Antennae about half 

 the length of the body in $ . longer in % . stout, of equal thickness ; 

 basal joint short and subglobose, obliquely truncate exteriorly and re- 

 ceiving the second joint, which is short and transverse; third joint 

 minute ; fourth joint longest, as long as the fourth and fifth joints taken 

 together, thickened towards the apex ; remaining joints subequal, be- 

 coming very gradually shorter towards the tip ; terminal joints slightly 

 longer than the two penultimate joints, obtusely pointed. Thorax 

 robust, somewhat gibbous; pleura flattened; scutellum as in Banchus; 

 metathorax short, convex, not abrupt behind. Wings ample, broad and 

 obtusely rounded at tips, the neuration much as in Banchus, except 

 that the cells are broader and less elongate ; the areolet is moderately 

 targe and of a subtriangular rhomboidal shape. Legs moderately long, 

 and robust; the posterior coxaa and trochanters very robust, the femora 

 subcompressed, the posterior pair robust and rather short; tarsal claws 



