Staphylinidce of tlie Amazon Valley. 177 



tlian the tliorax, rather long, a little narrowed behind, the 

 front produced between the insertion of the antenna3, and 

 with a deep longitudinal impression, with two pvmctures 

 on each side between the eyes, the back part coarsely 

 and rather numerously punctured. Thorax much nai*- 

 rower than the elytra, considerably longer than broad, 

 and considei'ably narrowed behind, the sides sinuate, front 

 angles seen from above not much rounded ; it is of a red- 

 dish-yellow colour, very shining, and has on each side the 

 middle a dorsal row of seven very coarse punctures, and 

 between these, near the base on each side, three or four 

 accessory punctures, so placed as to render the dorsal row 

 confused, also with five or six other coarse punctures on 

 each side, near the front angles. Scutellura densely and 

 finely pimctured. Elytra about as long as the thorax, 

 tawny at the base, smoky towards the extremity, very 

 coarsely and rather sparingly punctured. Hind body 

 tawny, with the 5th and 6tli segments blackish, the hinder 

 portion of the latter and the 7th pale yellow, anal styles 

 fuscous ; it is sparingly punctured, except on the black 

 parts of the 5th and 6th segments, where the punctuation 

 is much closer. The legs are yelloAv, the intermediate 

 cox£e distant. 



St. Paulo ; two specimens, both, I think, ? . 



17. Philonthus ahactus, n. sp. Augustus, nitidus, 

 rufo-testaceus, capite reneo, elytris apicem versus infus- 

 catis ; abdomine ante apicem nigro, ano pedibusque pallidis ; 

 prothorace omnium grosse punctato, punctorum numerus 

 utrinque circiter viginti, linea media leevi fere nulla. 

 Long. Corp. 3|^ lin. 



Mas ; abdomine segmento 7° ventrali margine apicali 

 minus profunde triangulariter emarginato. 



A remarkable Stilicoid species allied in structure to 

 P. aberrans, but with the punctuation of the thorax quite 

 different. The antennae are long, rather longer than head 

 and thorax ; they are rather slender and scarcely at all 

 thickened at the extremity, they are of a yellowish colour, 

 joints 4 — 11 being duskier than the three basal joints; 

 2nd and 3rd joints about equal, 4th nearly as long 

 as 3rd; from the 5th to the 10th each joint is a little 

 shorter than its predecessor, the 11th joint about as long 

 as the 9th. Head brassy, broad and short, much broader 

 than the thorax, nearly as broad as the elytra, the front 



TRANS. ENT. SOC. 187G. — PART I. (mAY.) N 



