254 TEETIARY INSECTS OF NOETH AMERICA. 



Aphantaphis exsuca. 



The fore wing, which is exceptionally preserved, is long oval, almost 

 three times as long as broad ; the postcostal and all the space between it and 

 the costal margin filled with pigment, so as to be exceptionally broad, taper- 

 ing until it expands again into the long- fusiform stigma. First oblique vein 

 very close to the base, short, straight, parting from the postcostal at an 

 angle of at least seventy degrees, not twice as long as the breadth of the base 

 of the first discoidal cell ; second oblique vein arising far from the first at an 

 angle of fifty degrees, straight until near the tip, where it bends considerably 

 to meet the margin, so that the first discoidal cell is hardly more than twice 

 as broad on the hind margin as at the base. Cubital vein feeble, but uniform 

 throughout ; hardly so far removed from the second oblique vein at its 

 origin as that from the first, first forking hardly one-sixth way to the hind 

 margin, again fully half-wa}" to the tip of the wing, running slightly nearer 

 the stigmatic than the second oblique vein. Stigmatic vein arising opposite 

 a point about one-third the distance from the first to the second forking of 

 the cubital vein or less, far before the middle of the stigma, having a 

 broad sweep, so that the stigmatic cell, though not narrow, is four-ninths 

 the length of the wing. 



Length of fore wing, 4 5°"" ; breadth of same, 1.6"" ; length of antennae, 

 6""°; hind tibiae. and tarsi, 4""". 



Florissant. One specimen. No. 1215. 



6. SIPHONOPHOROIDES Buckton. 



Siphonophoroides (pars) Buckton, Monogr. Brit. Aphides, IV, 176 (1883). 



Antennae inserted on distinct and prominent frontal tubercles, the first 

 two joints forming together a stout, subconical mass more than twice as long 

 as broad ; the remainder of the antennae slender, filiform, much longer than 

 tlie body, as long as the fore wings, all the joints and especially the third 

 excessively long. Fore wings with the stigmatic vein arising from the 

 middle of the very long and slender fusiform stigma. Cubital vein twice 

 forked, the first time tolerably far from its origin, which is usually at about 

 one-third the distance from the base of the first oblique to that of the stig- 

 matic vein, the second time about as far again beyond the stigmatic vein as 

 that is beyond the first fork of the cubital vein. Second oblique vein aris- 



