Staphylinidce of tlie Amazon Valley. 219 



infuscate ; moderately broad. Antennre long and slender, 

 rather longer than head and thorax, yellowish ; joints 3 — 7 

 darker than the rest, 1st joint nearly as long as the five 

 following together, 2nd and 3rd joints about equal in 

 length, 4 — 11 each a little shorter than the preceding. 

 Head rather broad, quite as broad as the thorax, the front 

 part much produced, so that the eyes are placed at the 

 middle of the side ; it is of a dull-reddish colour, the back 

 part closely but obsoletely punctured, and finely pubes- 

 cent, the front part very sparingly but more distinctly 

 punctured. Thorax two-thirds of the width of the elytra, 

 longer than broad, similar in colour to the head ; a broad, 

 longitudinal space along the middle smooth, the sides very 

 finely punctured. Elytra longer than the thorax, darker 

 in colour ; the apex paler, densely but very finely rugosely 

 punctured. Hind body reddish, quite dull, very finely and 

 closely punctured. Legs yellow. 



In the male the 7th segment of the hind body has a 

 deep triangular notch at the posterior part, and the fith 

 segment has an indistinct broad impression at the ex- 

 tremity. 



Amazons ; without particular locality ; two male indi- 

 viduals. 



13. Cryptohium fuscipenne, n. sp. Angustum, rufes- 

 cens, antennis pedibusque testaceis, illis medio, capite 

 (plus minusve), elytris, abdomineque apice infuscatis ; 

 capite opaco ; thorace elytrisque dense fortiter punctatis, 

 his apice testaceo, illo linea media lievi. Long. corp. 

 2ilin. 



Mas: abdomine segmento 7° ventrali apice medio an- 

 guste triangulariter exciso, seg. 6° apice medio late pro- 

 fundeque semicirculariter impress©. 



Antenna long and slender, rather longer than head and 

 thoi'ax, yellow, infuscated in the middle; 1st joint as long 

 as the five or six following together, 3rd joint about equal 

 to 2nd, 4 — 11 each a little shorter than the preceding one. 

 Mandibles and palpi yellow. Head about as broad as the 

 thorax, eyes prominent, and placed at the middle of the 

 sides ; it is quite dull, densely and finely rugose-punctate, 

 the punctuation on the front part more distinct than at the 

 back. Thorax shining reddish, about two-thirds the Avidth 

 of the elytra, longer than broad, coarsely and closely punc- 

 tured, with an indistinctly raised line along the middle. 



