JAMES A. G. REHN 251 



than tliat of the infra-ocular sulcus. Antennae relatively short, less than the 

 dorsal length of the head and pronotum combined, simple, slender, sub- 

 depressed proximad (except for the two proximal segments), apex appreciably 

 cochleate ventrad. 



Pronotum narrowing cephalad, broad caudad, in dorsal silhouette regularly 

 enlarging caudad, greatest (caudal) width of metazonal disk slightly less than 

 greatest length of disk; in profile the prozonal {sensu latiore) portion of disk is 

 moderately but very appreciably sub-bullate, higher cephalad than caudad, 

 in section subtectate, metazonal section gently arcuate in profile, but not at 

 all bullate: surface of pronotum irregularly, but generally transverse, rugulose 

 on prozona; cribroso-punctulate on metazona, lateral lobes as well as disk: 

 cephalic margin of disk weakly obtuse-angulate, the immediate angle narrowly 

 truncate, small but appreciable and well-spaced strumosities beading the 

 cephalic margin of disk and to an extent on dorsal section of lateral lobes; 

 caudal margin of disk broad sub-arcuate obtuse-angulate, the margins appre- 

 ciably sinuate, cingulate: metazona almost one and a half times the prozonal 

 length : median carina of disk delicate but evident, although subobsolete shortly 

 cephalad of the transverse sulcus, weakly subcristate near cephalic margin; 

 lateral carinae obsolete, on prozona represented solely by several small nodes; 

 metazonal shoulders decided but broadly rounded, non-carinate : usual median 

 mesozonal elevation weakly indicated by a sublongitudinal horse-shoe shaped 

 area outlined by carinulations, little distinct, however, in the general sub- 

 tumidity of that section: principal transverse sulcus deeply impressed, the 

 prozonal sulci evident, but less deeply, on the lateral portions of disk and 

 lateral loljes, obsolete near median line. Lateral lobes of pronotum with 

 greatest depth subequal to greatest dorsal length, the greatest depth caudad; 

 cephalic margin moderately sinuate; ventro-cephalic angle narrowly roimded 

 rectangulate ; ventral margin arcuate-emarginate cephalad, with the ventro- 

 caudal angle moderately arcuate; caudal margin nearly straight, faintly 

 oblique: surface of prozona of lobes in general smoother than metazona,but 

 with several obliquely disposed subacute, though relatively low, nodes. 



Tegmina but slightly surpassing the apex of the abdomen, their greatest 

 breadth contained slightly more than five times in their length: texture 

 markedly coriaceous proximad and mesad, becoming more transparent in 

 distal portion: areolation as a whole close, very close in the coriaceous section, 

 distad the individual areolae average nearly quadrate: costal margin with a 

 distinct and rather elongate, though but moderately deep, proximal lobation, 

 in distal third the margin is regularly arcuate to the rounded rectangulate 

 apex, where the tegmen is but two-fifths as wide as at widest point; sutural 

 margin in general nearly straight, distal concavity appreciable but very slight; 

 distal margin strongly oblique, moderately arcuate: intercalary vein distinct, 

 proximad equidistant from the median and ulnar veins, distad quite close to 

 the median vein: anal field broad, at widest point equal to two-fifth& of the 

 entire tegminal width. Wings moderately elongate, their greatest width 

 contained one and four-fifths times in the greatest length of the same; apex 

 rounded rectangulate; axillary field arcuate lobulate: areolation of anterior 



TRANS. AM. ENT. SOC, XLV. 



