Mr. H.W. Bates on the Endomychidae of the Amazon Valley. 167 



but deep, and the first ventral segment has a small tubercle in the 

 middle of its hind edge. 



I captured one individual of this remarkable species at Obydos, in 

 company with C. interruptus, Gerst., and G. ductus, Fab., the extreme 

 varieties of which it curiously resembles in colour. 



9. Corynomalus Uvidus, n. sp. 



C. ovatus, paido convexus, rufo-ferrugineus, antennis, articulis duobus 

 basalibus exceptis, tibiisque nigris ; elytris punctatis, interstitiis punctu- 

 latis, brimneo-rufis parum nitidis. — Long. lin. 3J ( cf § )• 



The body is more oblong and less convex than in the other species 

 of this section. Reddish. Head punctate, shining. Antennae with 

 the joints slender, the first red, the second pitchy, the rest black, shining. 

 Prothorax slightly widened after the middle, thence narrowed to the 

 apex, the apical angles prominent and acute, punctured, shining. Elytra 

 slightly but regularly convex, the convexity being nearly in continuity 

 with the prothorax, its highest part at the middle of the elytra, widest 

 behind the shoulders, thence narrowed and rounded gradually to the 

 apex, punctured, the interstices finely punctured ; brownish-red, livid, 

 the margins scarcely paler. Under surface of the body, legs except 

 the tibiae which are black, and under-margins of the elytra rufous, 

 shining. 



This was a common species at Para, on small Boleti covering old 

 palings in plantations, or on decayed branches of trees in the forest. 

 I have before me three males and one female. The legs are remark- 

 ably short, the middle tibiae of the male very crooked near the apex, 

 and the first ventral segment in the same sex is furnished with a 

 minute tubercle in the middle of the hinder edge. 



10. Corynomalus subcordatus, Gerstaecker, Hon. p. 157. 



This species is common throughout the Amazon region from Para 

 to St. Paulo. All the examples before me (two) from the last-men- 

 tioned locality seem to belong to var. b of Gerstaecker, having the 

 head, thorax, femora, and tarsi clear red ferruginous. The speci- 

 mens from Ega (six) have the same parts more obscure, with the 

 elytra brassy- violet or dark greenish-blue. The typical examples, as 

 Gerstaecker mentions, occur at Para. 



11. Corynomalus quadriplagiatus, n. sp. 



C. ferrugineo-rufus sericeo-micans, antennarum clava fusca, elytrorum 

 maculis duabus magnis cyaneo-nigris vix nitidis. — Long. lin. 3| ( 2 ). 



Compact, rusty-red. Head distinctly punctured. Antenna? shining 

 red, club fuscous. Thorax with the sides gradually but very slightly 



n2 



