Staphylinid(B of the Amazon Vallci/. 239 



13. Lathrohimn Batesi, n. sp. Parallelum, castaneuni, 

 nitidulum, antennis pedibusque testaceis; capite piceo, 

 vertice et angulis posterioribus dense subtiliter, disco et 

 froiite parcius fortiter punctatis; prothorace crebre sub- 

 tiliter punctato, linea media impiinctata. Long. corp. 

 2 lin. 



Mas : abdomine segmento 7" ventrali apice sat profunde 

 lateque exciso ; 6*^ utrinque impressione profunda. 



Allied to L. amazonicum, but much smaller and more 

 finely punctured. Antennre yellow, longer than head and 

 thorax ; 3rd joint considerably longer than 2nd, 4th about 

 as long as 2nd. Head quite as broad as the thorax, 

 pitchy, the hind angles and vertex densely and very finely 

 punctured, opaque, the front and middle more sparingly 

 and distinctly punctured, shining. Thorax longer than 

 broad, nearly as broad as the elytra, shining reddish, the 

 sides rather closely and finely punctured; a broad line 

 down the middle impunctate. Elytra rather longer than 

 the thorax, similar to it in colour, finely and not closely 

 punctured, the punctures arranged in lines at the base. 

 Hind body closely and finely punctured. Legs yellow. 



The male characters are peculiar ; the 7th ventral seg- 

 ment has a rather deep notch in the middle at the 

 extremity ; the 6th segment has on each side the middle, 

 near the base, a large deep fovea or impression ; the 

 trochanters are peculiarly formed, their hind margin is 

 concave, its apical angle acuminate, and they are externally 

 obliquely truncate. 



Tapajos ; eight individuals, four of each sex. 



14. Lathrohium minor, n. sp. Parallelum, testaceum, 

 nitidulum, capite fortiter parcius, angulis posterioribus 

 dense obsolete punctato ; thorace crebre subtiliter punc- 

 tato, linea media impunctata. Long. corp. If lin. 



Mas : abdomine segmento 7° ventrali apice exciso, 

 segmento 6° emarginato. 



Closely allied to L. Batesi ; paler in colour and rather 

 broader than that species, with the head less densely 

 punctured, and the hind margin of the 6th segment of 

 the hind body emarginate in the male. Antennas rather 

 longer than head and thorax, yellow ; 3rd joint longer 

 than 2nd, 4 — 10 each a little shorter than the preceding 

 one. Head as broad as the elytra, father darker than the 

 rest of the insect, the hind angles densely and indistinctly 



