280 TEKTIAKY INSECTS OF NORTH AMERICA. 



connection of the process to the vertex, by which it is seen to be here 

 abruptly bent backward, but at the same time upward, so as to leave an 

 angulate opening between it and the head. The head is streaked with pale, 

 relieved by dark along the incisures, and the process is longitudinally marked 

 in the same way, the carinae being dark. The tegmina are broad, expand- 

 ing triangularly, roundly angulate at the apex, which is in the middle of the 

 upper half, and surpass the abdomen by about one-fifth their length ; they 

 are dark but mottled with lighter colors, and in the apical reticulate portion 

 the nervules and cross-veins are heavily marked with white, 1)reaking this 

 part of the wing up into pretty regular, rectangular and longitudinal, fulig- 

 inous cells of very equal breadth, but varying in length from one to three 

 times their breadth. The legs are dark, marked longitudinally with paler 

 colors, and the dark abdomen is much paler in broad bands at the incisures. 



Length of body, 20 ? """ ; height of thorax, 7"'" ; length of process 

 beyond the head, 3""" ; breadth of same, 1™" ; length of tegmina, 20""° ; 

 their breadth, 8"™; length of fore femora, 4™"; fore tibia?, 5°"°; hind 

 femora, 5 5'"" ; hind tibia?, 7°"". 



This striking insect, the possible light bearer of the ancient Florissant 

 nights, is named for my friend Mr. P. R. Uhler, who has done more than 

 any one else to illumine the path of the student of Hemiptera in our country. 



Florissant. One specimen, No. 11771. 



2. Nyctophylax vigil. 

 PI. 19, Fig. S. 



This species seems to differ from the preceding, so far as can be seen, 

 only in its smaller size and the shorter and more abruptly recurved process 

 of the head, the apex of which only reaches a point opposite the middle of 

 the eye, and is removed from the summit of the head by scarcely its own 

 greatest width. Unfortunately this part was not exposed on the stone when 

 it was drawn, and the front of the specimen, which is preserved in nearly 

 the same position as in that of N. uhleri, is broken to almost precisely the 

 same extent as there. The markings are throughout the same, excepting 

 that the pale bands at the incisures of the abdomen appear to be narrower. 



Length of body, 16"° ; height of thorax, 4.5""™ ; length of process 

 beyond the head, 1 2"° ; breadth of same, 0.9°° ; length of tegmina, 

 14.75°°. 



Florissant. One specimen. No. 12088. 



