StapliylinidcB of tlte Amazon Valley, 159 



5. Beloniiclius decipiens, n. sp. Niger, nitidus, anten- 

 narum basi pedibusque piceis, ano late testaceo, protho- 

 racis serie dorsali 5-punctato, abdomine crebre punctato. 

 Long. Corp. 5i lin. 



Mas : capite niajore clypeo sub-bidentato, abdomine 

 segmento 1" ventrali apice leviter emarginato, femoribus 

 posticis siibtus fortiter biseriatira spinosis. 



Fern. : femoribus posticis uniseriatim setosis. 



Antenna3 blackish, with the two or three basal joints 

 pitchy, and the last joint rusty ; 3rd joint but slightly 

 longer than 2nd, 4th quadrate, 5 — 10 transverse but not 

 strongly so. Palpi reddish ; mandibles pitchy. Head 

 black and shining, with two points on each side between 

 the eyes, and with several other coarse punctures on each 

 side near the hind angles, the front portion with an im- 

 pi-essed line extending half-way to the back. Thorax 

 rather narrower than the elytra, quadrate, not or scarcely 

 narrowed behind, the anterior angles a little depressed and 

 rounded, the sides scarcely sinuate; it is black and shining, 

 and has on each side a dorsal row of five punctures; of 

 these the hinder one is placed at a distance from the 

 others. The elytra are about as long as the thorax, 

 shining blackish, rather finely and not closely punctured. 

 The hind body is black, with the hind portion of the 6th 

 and the whole of the 7th segment yellow ; segments 2 and 

 3 are rather sparingly punctured, 4 — 6 more closely 

 punctured and with a coarse black pubescence, 7th seg- 

 ment very finely and sparingly punctured. Legs pitchy. 



The individual described above is a male (from Ega), 

 and has the head rather larger than the thorax ; the man- 

 dibles and palpi elongate, the clypeus obtusely projecting 

 on each side between the insertion of the antennte ; the 

 back part of the under face of the anterior femora dilated 

 from the base to near the extremity, and furnished with 

 short spines, the hind femora beneath wath two rows of 

 stout spines, and the hind margin of the 7th ventral seg- 

 ment of the hind body a little emarginate. 



Ega ; two males. 



Obs, — A series of female specimens from Para, Tapajos 

 and Ega, are, I have no doubt, the other sex of this 

 species. They have the head not broader than the thorax, 

 the mandibles and maxillary palpi shorter, the clypeus 

 simple, the front femora not dilated beneath, and the 

 hinder femora destitute of the two rows of stout spines. 



