Stapliylinidm of the Amazon Vallerj. 93 



15. Coproporus duplex, n. sp. Subdepressus, nitidus, 

 piceus, anteniiarum basi, pedibus, pvothoracis maginibus, 

 elytrisque apicem versus testaceis ; antice impimctatus, 

 abdomine crebre subtiliter piinctulato. Long. corp. 1^ lin. 



Antennae elongate, sleijider at the base, distinctly thicker 

 at the extremity ; the three basal joints yellow, the rest 

 blackish ; 3rd joint a little shorter than 2nd ; 4th joint 

 slender ; 10th about as long as broad. Head rather small, 

 shining and impunctatc, blackish. Thorax very slightly 

 sinuate at the base on each side ; the hind angles mode- 

 rately rounded, the sides and base yellowish, the front 

 portion darker in colour ; the surface is shining and im- 

 punctate. Scutellum large, impunctate. Elytra but little 

 convex transversely, shining and impunctate, pitchy 

 yellow, the base darker than the apex; the lateral mar- 

 gins explanate ; the hind angle a good deal rounded. 

 Hind body slender in proportion to the front parts, 

 blackish, finely, evenly and rather closely punctured. 

 Legs yellow ; tibise very slender ; the tarsi elongate and 

 extremely slender. The mesosternal carina not much ele- 

 vated, but with the anterior part more elevated than the 

 hinder part, so that an acute projection is formed on its 

 middle. 



In the male the dorsal plate of the 7th segment of the 

 hind body ends in the middle in two short, stout, acumi- 

 nate teeth, and in a scarcely prominent lateral one on each 

 side ; the ventral plate bears a deep, angular excision, 

 the sides of which are a little curved. 



Conceicao, Rio Mauhes; a single male, captured by 

 Dr. Trail, May, 1874. 



16. Coproporus sc?.dellaf us, n.&Y). Subdepressus, nigro- 

 piceus, nitidus, antennis pedibusque testaceis, capite pro- 

 thoraceque vix visibiliter, elytris subtiliter, abdomine 

 evidentius punctatis ; elytris secundum mai'ginem lateralem 

 canaliculatis. Long. corp. 1^ lin. 



This species differs from the others of the genus here 

 described by its much flatter and more Tachinoid form, 

 and its hind body is evidently less retractile. It appears 

 to be closely allied to T. hrevicollis, Er. The antennae 

 are yellowish, they are of a moderate length and stout- 

 ness, a little thickened to the apex ; 2nd and 3rd joints 

 nearly equal in length ; 4 — 10 differing but little from 

 one another, the 4th considerably stouter than the third ; 



