502 Annals of the Carnegie Museum. 



similar color, with testaceous lateral margins; face and cheeks oli- 

 vaceous; antennae inclining to ferruginous. Abdomen above brownish 

 olive, the sides of the three basal segments prominently marked with 

 piceous, lower side flavous. Hind tibia? green, with spines largely 

 black. 



Length of body, o 71 , 14 mm., of pronotum, 3.1 mm., of tegmina, 

 2.3 mm., of hind femora, 11 mm. 



Habitat. — A single male specimen, the type, bears the label "Puerto 

 Suarez, Bolivia, 150 M., Nov., '08-Jan., '09, J. Steinbach." 



The structure of the hind tibiae of this insect points to its possible 

 aquatic or subaquatic habit. Its very minute and lateral tegmina 

 also indicate a rather stationary existence, which would also be true 

 with all of the other representatives of the genus. Possibly all of 

 them are partial to certain food-plants from which they seldom stray. 



125. Paradichroplus steinbachi sp. no v. 



Most nearly related to P. aberrans Giglio-Tos, but a much larger 

 insect than that species, as indicated in the synoptical table. Cinereo- 

 ferruginous and more or less strongly conspersed with round fuscous 

 dots on the pronotum and the basal abdominal segments above. 

 Lower lateral margins of the former broadly ivory-white. Body 

 moderately hirsute. 



Head normal or small, the width about the same as that of the 

 anterior edge of the pronotum. Eyes of moderate size, not prominent, 

 decidedly longer than wide, their anterior margin nearly straight; 

 vertex between the eyes about one and one-half times the diameter 

 of the basal antennal joint, the fastigium rather short but broad, 

 depressed, and widely but shallowly sulcate; frontal costa not especially 

 prominent, a trifle broadest at its middle and sulcate throughout, the 

 lateral walls coarse; facial carina? prominent, divergent, gently sinuose. 

 Antennas filiform, a very little surpassing the hind margin of the 

 pronotum. Pronotum evenly divergent posteriorly, without lateral 

 carinae and with but a slight median one; the anterior lobe a trifle 

 more than twice the length of the posterior, the transverse sulci 

 fairly prominent, the last alone continuous, the other two being 

 interrupted by the inconspicuous median carina; anterior and posterior 

 margins of the disk nearly straight. Tegmina minute, lateral, spatu- 

 late, about two and one-half times as long as their greatest width, 

 sparsely veined, reaching three-fourths across the basal abdominal 



