U'J Annals of the Carnegie Museum. 



tennae filiform, as long as the hind femora, composed of about twenty 

 joints, which beyond the immediate basal ones are rather evenly, 

 strongly, and profusely pitted. Pronotum subcylindrical, the pos- 

 terior lobe being gently dilated, a little less than half as long as the 

 anterior one, and straight behind; median carina wanting. Hind 

 femora about two-fifths longer than the abdomen, moderately robust, 

 the upper and lower carinae serrate, the genicular lobes not acute. 

 Hind tibiae seven-spined externally and nine-spined internally. Tip 

 of male abdomen upturned, the last ventral segment short, tapering, 

 its outer margin entire. Supra-anal plate elongate-triangular, the 

 lateral edges upturned and sinuate, the apex bluntly rounded, the 

 middle roundly elevated and longitudinally faintly sulcate. 

 Cerci rather broad at base, somewhat flattened, gently tapering to 

 middle, where they give off a backwardly directed tooth, turn in- 

 ward, and again fork, the inner branch being the larger and longer. 

 Mesosternal lobes separated by a quadrate space a little narrower than 

 the lobes themselves. Prosternal spine with a heavy base, but short 

 and small. 



199. Psiloscirtus olivaceus so. now 



General color olivaceous. On the head and thorax above tinged 

 with ferruginous; on the femora and beneath with flavous. Genic- 

 ular lunules of hind femora and surroundings strongly infuscated. 

 Auditory apparatus large, nearly circular. 



Eyes pale castaneous with a metallic lustre in certain lights. All 

 three transverse sulci of pronotum continuous, fairly deep; the pos- 

 terior one about one-fourth the length of the disk from the hind mar- 

 gin. Latter very gently, but widely, emarginate. Lower edges of 

 pronotum, cheeks back of eyes, and pleura concolorous, without 

 paler or darker markings. Anterior and middle femora only moder- 

 ately inflated. Hind tibia? and tarsi rather profusely hirsute. 



Length of body, cf , 14.5 mm., of pronotum, 3 mm., of hind femora 

 10.25 mm. 



Habitat. — Benevides, Brazil, in July, a single male (H. H. Smith). 

 This insect is in the Carnegie Museum. 



Genus Eusitalces gen. now 

 At first glance reminding one of a Shakes Stal. but upon a closer 

 examination showing a nearer relationship to Rhachicreagra Rehn. 

 From the last named genus it differs in having but six spines on the outer 



