1918.] NATURAL SCIENCES OF PHILADELPHIA. 231 



tion, in the pronotum being less narrowed cephalad, in the more 

 elongate limbs, in the deeply sulcate subgenital plate of the male and 

 in the different coloration. From conspersus the new form differs 

 in the smaller, non-attingent ocelli, the more fusiform cephalic tibiae, 

 the generally less robust limbs, the more elongate caudal metatarsal 

 spurs, and the less strongly divided subgenital plate of the male and 

 in certain features of the coloration. Comparison can hardly be 

 made with lividus (Burmeister), as its diagnosis is so brief and in- 

 definite that the recognition of the species without the re-examina- 

 tion of the type would be purely guess-work. 



Type: cf ; Para, State of Para, Brazil. (C. F. Baker.) [Acad. 

 Nat. Sci. Phila., Type no. 5363]. 



Size medium: form elongate, quite slender, subcompressed surface 

 of body and limbs rather thickly pilose, this generally adpressed; of 

 tegmina microscopically adpressed pilose. Head no wider than the 

 cephalic section of the pronotum, depth of the head subequal to 

 the width across the eyes: occiput gently declivent cephalad, the 

 fastigium plane and non-excavate; when seen in lateral outline the 

 interantennal angle is rounded obtuse-angulate : ocelli of medium 

 size, placed in an arcuate line, the median one rather small, elliptical, 

 transverse, separated from the lateral ocelli by faintly more than 

 the length of the median ocellus, fossetted; lateral ocelli large, sub- 

 circular, flattened, placed longitudinal, separated from the eyes by 

 less than their own diameter: rostrum with the interantennal width 

 faintly greater than the width of the proximal antennal segment, 

 briefly fossulate dorsad: eyes moderately prominent, in basal out- 

 line broad subpyriform : palpi moderately elongate; third joint long; 

 the fourth somewhat shorter, narrow at its base; fifth joint as long 

 as the fourth joint, produced securiform, the distal width slightly 

 less than the length of the joint, flexor margin nearly straight with 

 a distal rounding to the arcuato-truncate distal margin, extensor 

 margin gently concave: antennae elongate; proximal joint moderately 

 depressed, narrowed proximad. Pronotum transverse, the greatest 

 median length contained one and one-half times in the greatest 

 caudal width of the same; in transverse section arcuate, rather 

 broadly rounding into the lateral lobes: cephalic margin subtruncate; 

 caudal margin strongly bisinuate, decidedly produced arcuate mesad; 

 lateral borders of disk moderately diverging caudad; cephalic and 

 caudal margins cingulate, the former with this moderately, the 

 latter extremely, broad; pyriform impressions of the disk large, 

 broad; lateral lobes of the pronotum one and one-half times as 



