1918.] NATURAL SCIENCES OF PHILADELPHIA. 177 



Genotype: C. leucotylus new species. 

 Chloropseustes leucotylus-'^ n. sp. (PI, I, fig^. 28-31.) 



TjT^e: cT ; Igarape-assu, State of Para, Brazil. January 17, 1912. 

 (H. S. Parish.) [Acad. Nat. Sci. Phila., Type no. 5287.] 



Size small. Head slightly enlarging cephalad of its insertion in the 

 pronotum; occiput roundly inflated and ascending; vertex with 

 interspace between the eyes very narrow, less than the width of the 

 third antennal joint, caudad of the constriction the vertex is lanceo- 

 late sulcato-impressed; fastigium weakly declivent when seen from 

 the lateral aspect, distinctly broader than long when seen from the 

 dorsum, the greatest width subequal to twice the width of the proxi- 

 mal antennal joint, fastigium delicately sulcate medio-longitudinally; 

 fastigio-frontal region vertically truncate to between the antennae 

 when seen from the lateral aspect, face then strongly retreating, 

 weakly concave; frontal costa indicated to the elypeal suture, nar- 

 row, weakly narrowed ventrad of junction with fastigium and faintly 

 so immediately ventrad of the median ocellus, surface of costa dorsad 

 plane with a few punctures, ventrad of ventral margins of antennal 

 scrobes deeply but narrowly sulcate; lateral facial carinas well indi- 

 cated, divergent ventrad; eyes quite prominent, large, well elevated 

 dorsad of the vertex, in length about twice that of the infra-ocular 

 portion of the genae; antennae about three times as long as the pro- 

 notum, simple, joints elongate, very faintly enlarging distad. Pro- 

 notum weakly sellate in general form, but dorsal line straight, with 

 greatest dorsal length slightly greater than the greatest dorsal width ; 

 cephalic margin of disk subarcuate with shallow, broad, median 

 emargination; caudal margin of disk very broadly and faintly emar- 

 ginate, with a more pronounced, broad, median V-emargination : 

 mecUan carina very weakly and discontinuously indicated on the 

 prozona; transverse sulci very deeply impressed, the caudal one con- 

 tinuous, the others, three in number, severed by the median carina, a 

 supplementary, short, dorsal sulcus placed between sulci one and two; 

 metazona forming no more than one-fourth of the dorsal length of the 

 pronotum: lateral lobes about one and three-fourths times as long as 

 deep, ventro-caudal angle rounded, caudal margin straight; surface 

 of metazona of lobes faintly punctulate. Mesonotum with caudal 

 margin faintly obtuse-angulate emarginate mesad, the surface as- 

 cending dorso-caudad into a blunt, tubercular structure : metanotum 

 with a structure similar to that of mesonotum, but the caudal 

 margin is more decidedly obtuse-angulate emarginate. Tegmina 



-5 From ^EVKor while, rv/.or knob. 



