116 TERTIARY INSECTS OF XORTH AMERICA. 



again as broad. Antenna? nowhere well preserved, luit apparently longer 

 and with more numerous joints than in E. fossarum. Pronotuni as broad 

 as the head (?) and very short, probably more than twice as broad as long, 

 the hind margin not forming with the sides a continuous curve, but in its 

 middle half only slightly convex. Mesonotum and tuetanotum quadrate, 

 broader than the head, the mesonotum somewhat the larger, at least half as 

 broad again as long. Abdomen rather stout, longer than the rest of the 

 body, the sides nearly parallel, the tip broadly rounded, and, as far as can 

 be made out, unprovided with terminal appendages. Legs moderately long 

 and stout, the tibia? armed with a pair of spines at apex, the front tibia? 

 about as long as the pronotum. 



Wings long, slender, and uniform, four times or slightly less than four 

 times as long as broad, the middle of the front pair reaching the tip of the 

 abdomen, broadest at or slightly beyond the middle, the lower border 

 slightly arcuate throughout. Costal margin straight in the basal three- 

 fourths of the wing. Scapular vein parallel to the margin, the subcostal 

 area scarcely infumated. Veins below the scapular not determinable. 

 Basal scale small, triangular, equilateral, the sides straight excepting the 

 - tl. which is very slightly convex and prominent 



This species differs from the preceding by its slightly smaller size, 

 squarer pronotum, and differently shaped head. 



Length of body, 5.25-7, av. 6.3 mm ; of abdomen. 2.8-3.5, av. 3.2 mm ; 

 breadth of abdomen, l.o mm ; length of wing, 7.5-8 mm : breadth of same, 2 mm . 



Xamed for Mr. T. L. Mead, whose collection of Florissant insects he 

 has permitted me to study. 



Florissant. Four specimens, Xo. 19 (Coll. T. L. Mead), and Xos. 31, 

 1203. 8062. 



A single specimen of a wingless white ant has been found, apparently 

 belonging to this species or to E. fossarum. It measures 3.75 mm in length, 

 and is of the ordinary form of the worker, with rounded head and con- 

 stricted prothorax, bearing a general resemblance to the only other known 

 --:! termite larva, figured in Berendt's work, but has the head more pro- 

 duced anteriorly and the abdomen less distended. 



Florissant. One specimen, Xo. 6100. 



