Staplii/Iinidcc of the A?)iazu}i Valley. 167 



3. Philonthus delcius, n. sp. Rufo-testaccus, nltidus, 

 capite elytrisque obscurioribus, horum apice, antennis pedi- 

 busque testaceis ; protlioi-ace subtiliter multipiuictato, linea 

 lata media la3vi. Long. corp. 2 lin. 



Quite of the structure of P. pTolixus. Antennre yellow, 

 rather stout; 3rd joint about equal to the 2nd ; 10th joint 

 scarcely so long as broad. Head dark reddish, about as 

 broad as the thorax, rather finely and not closely punc- 

 tured, the middle part impimctate. Thorax narrower than 

 the elytra, one and a-half times as long as broad, scarcely 

 narrowed behind, the sides a little sinuate ; it is of yellow- 

 ish colour, shining, a broad middle space impunctate : the 

 sides punctured, the punctuation not deep and not very 

 close. Scutellum yellowish, very finely and indistinctly 

 punctured. Elytra rather longer than the thorax, fuscous ; 

 the apex pale yellow, finely and rather sparingly punc- 

 tured. Hind body yellowish, not narrowed to the extre- 

 mity, its punctuation and pubescence extremely fine and 

 not dense. Legs yellow, rather stout. 



The male has a moderately large notch at the extremity 

 of the ventral plate of the 7 th segment of the hind body, 

 and the hind margin of the 6th segment is slightly emar- 

 ginate. 



Tapajos ; four individuals. 



4. Pltilonthus m uticus, n. sp. Depressus, obscure rufo-tes- 

 taceus, capite abdomineque nigricantibus, hoc crebre subti- 

 liter punctato, apice testaceo, prothorace serie dorsali 

 5-punctato ; coxis intermediis distantibus, tarsis anticis 

 omnino simplicibus. Long. corp. 31 lin. 



Mas: capite majore, abdomine segmento 7" ventrali apice 

 Icviter emarginato. 



This species resembles greaily Behniuch iis cequalis, but has 

 the anterior and posterior femora entirely without spines, ex- 

 cept the three or four at the extremity of the front femora 

 found in most species of Philonthus. The antenna^, are 

 inserted quite at the anterior margin of the front, which is 

 not at all produced in the middle; they are a little shorter 

 than the head and thorax, the three basal joints reddish, 

 the rest infuscated ; the 3rd joint longer than the 2nd, the 

 10th about as long as broad. The mandibles and palpi 

 are reddish. The head is blackish, with two points on 

 each side near the front, at the inner side of the eyes, and 

 between these with a punctiform longitndinal impression, 

 and with several other ]iunctures on each side, near the 



