4(5 REPORT UNITED STATES ENTOMOLOGICAL COMMISSION. 



The following somewhat full description of the perfect insect is given 

 from a comparison of a large number of specimens from different 

 sections: 



Female. — The face nearly perpendicular, sloping tinder, toward the breast very 

 slightly ; a few of the specimens reared in confinement form a somewhat marked ex- 

 ception to this character, sloping under (by measurement) 35° from perpendicular, 

 while a deflexion of 15° appears to be the extreme of those collected. Vertex between 

 the eyes same width as the frontal costa just above the central ocellus, and distinctly 

 less than the shortest diameter of the eyes ; the fa^tigiura, or portion of the vertex in 

 front of the eyes, more or less distinctly channeled, and deflexed at an angle of about 

 40° from horizontal. Eyes nearly straight in front from the upper to the lower can- 

 thus, about semicircular behind. Antennae quite slender, and rather short, reaching 

 only to or but slightly beyond the tip of the pronotum. 



Pronotum short, the anterior portion scarcely as broad as the head ; sides of the an- 

 terior lobes parallel, the posterior lobe expanding somewhat rapidly posteriorly ; the 

 median carina threadlike, but always distinct on the posterior lobe, usually obsolete 

 on the anterior lobes; lateral carinse obtuse but distinct on the posterior lobe, usually 

 so on the middle lobe but becoming obsolete toward the front ; posterior lateral mar- 

 gin peri)endicular from the humeral angle one-third its length then curves forward 

 to the posterior lateral angle which is obtuse and rounded ; the (entering) humeral 

 angle is sharply defined, and in this respect appears to differ from C. femur-ruhrum and 

 C. atlanis; the apex is obtuse, angled (about 100°) rounded at the point; posterior 

 lobe minutely and shallowly punctured throughout, anterior lobes smooth with few or 

 no punctures except along the lower margin of the sides. Elytra and wings extend- 

 ing beyond the tip of the abdomen from one-fourth to one-third their length (see meas- 

 urements given below) ; the elytra are of nearly uniform width throughout, slightly 

 curving upward at the apex, the thin portion (that part in which the branch nerves 

 curve upward) occupying about two-fifths of the length ; wings a little shorter than 

 the elytra, very thin and delicate; nerves and nervules very slender. Abdomen, and 

 in fact the whole insect, rather more slender than usual in this genus, but this appear- 

 ance is partly due to the elongated wings ^ cerci very small, triangular or tooth-shaped, 

 not extending across the segment on which they rest ; the valves of the ovipositor 

 quite prominent, especially the upper pair which are more than usually exerted, sharp 

 at the tips, and deeply excavated above. The posterior femora usually extend about 

 to the tip of the abdomen, and are rather slender in comparison with some other spe- 

 cies of the genus. 



Color. — Eeddish-brown with fuscous spots. Head and the pronotum back to the 

 posterior sulcus reddish-brown varying in depth in individuals ; the face is sometimes 

 of a lighter and brighter red than the pronotum, sometimes darker assuming a dark 

 purplish hue; the posterior lobe of the pronotum is generally a pale, olive brown, its 

 lighter color contrasting somewhat distinctly with the darker shades of the anterior 

 portion ; some individuals exhibit much lighter colors than here described, v.^rying 

 from a very dark brown to a dull yellow. Specimens which have but recently entered 

 the perfect state often show on the posterior lobe traces of the dark longitudinal lines 

 seen in the pupa. The dark line on the side of the head and pronotum usually so con- 

 spicuous in the closely allied species is generally obliterated in this species by the 

 dark brown color, but it usually appears distinctly in specimens which have been 

 immersed for some time in alcohol, and is also manifest in the pale individuals, but is 

 broken up by pale spaces and lines. The eyes are shining black. Elytra ash-brown, 

 more or less tinged with reddish-brown at the base and fading toward the apex ; in 

 the disk or middle field, commencing near the base, where this field comes to a point, 

 is an irregular row of fuscous dots, usually single to where the thin portion com- 

 mences, now and then a double dot appearing ; from this point to the apex they de- 

 crease in size and distinctness and spread over the entire width ; as a general rule the 



