Staphi/Unid(B of the Amazon Valley. 91 



than the tliorax ; close to the outside margin they have a 

 broad, deep impression, commencing a little behind the 

 humeral angle but continued close to the outer angle, 

 which is but little rounded. Hind body short, furnished 

 with exserted black set^. Legs concolorous. Mesothoracic 

 carina but little elevated. 



In the female the dorsal plate of the 8th segment of the 

 hind body terminates in four acute teeth of nearly equal 

 length, the three notches between which are very similar 

 to one another in breadth and depth. The ventral plate 

 of the same segment terminates in four teeth, shorter 

 than those of the dorsal plate ; the middle notch between 

 these is much shorter than the lateral ones, and is, in fact, 

 nearly filled up, but is continued forwards as a groove or 

 longitudinal impression. 



Ega ; two specimens, $ . 



Obs. — I have not been able to restore the hind body to 

 its natural elongation in this species, so that the length 

 mentioned for the species is only an estimate. 



13. Coproporus tinctus, n. sp. Convexus, nitidus, tes- 

 taceus, antennis ante apicem elytrisque basi fuscis ; elytris 

 evidenter punctulatis, intra marginem lateralem latins im- 

 pressis, angulo externo obtuso. Long. corp. 1^ lin. 



Antennre rather slender, only moderately long, a little 

 thickened towards the extremity ; the three basal joints 

 yellow, the following ones infuscate ; the apical one again 

 a little paler ; 3rd joint about as long as 2nd ; 4th slender, 

 a good deal longer than broad; 10th a little transverse. 

 Head yellow, impunctate. Thorax very slightly sinuate 

 at the base on each side ; the hind angles not much 

 rounded, yellow, very shining, quite impunctate. Elytra 

 yellow, but with the basal portion largely infuscate ; they 

 are distinctly punctured on the basal portion, but towards 

 the apex the punctuation becomes quite obsolete ; they 

 have a large, distinct impression near to the lateral margin, 

 and the hind angle is but little rounded. Hind body in- 

 distinctly and not closely punctured. Mesosternal carina 

 low. 



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

 hind body terminates in four moderately long teeth ; the 

 middle ones project a little farther back than the lateral 

 ones, and are rather the more slender ; the middle notch 

 does not extend quite so far forward as the lateral ones. 



