IIEMIPTERA IIOMOI'TEKA APHIDES. 253 



3. SBENAPHIS LASSA. 



This small species is represented by ;i single individual, with nearly all 

 the legs preserved in an unusual manner, but the wings not so completely. 

 The body is black throughout, the hind femora longer than the abdomen, 

 the hind tibia? as long as the body. The wings have the postcostal vein 

 and stigma precisely as in the last species. The first oblique vein is straight 

 or at the tip slightly arcuate, parting from the postcostal at an angle of about 

 titty degrees, the second oblique vein distinctly arcuate on its apical half, 

 parting from the postcostal at an angle of forty-five degrees, and separated 

 fn mi the first by a slightly wider interval than in the other species described ; 

 the first discoidal cell is about four times as broad on the hind margin as at 

 the base. The cubital vein, arising nearly three times as far from the second 

 oblique vein as the latter is from the first, takes a course above the middle 

 of the area left to it, approaching very close to the stigmatic vein : it forks 

 first about quarter-way to the hind margin and again about opposite the 

 stigmatic vein, which, with the stigmatic cell, is as in S. uhleri. 



Length of body, 3.25""" ; fore wing, 5.5 mn> ; fore femora, 1.15"""; fore 

 tibia-, 1.7""": middle femora, 1.4"""; middle tibia% 2.3""" ; hind femora, 2"""; 

 hind tibia?, 3.25 mm . 



Florissant. One specimen, No. 1291)4. 



5. APIIANTAPHIS gen. nov. (atparTo?, Aphis). 



Head without frontal tubercles, the antenna? being inserted in sub- 

 lateral pits ; they are longer than the fore wings, very slender indeed, the 

 third joint very long. Fore wings with the stigmatic vein arising from the 

 middle of an exceedingly slender and tapering stigma, the stigmatic cell 

 nearly half the length of the wing. (Cubital vein twice forked, I he first time 

 .ii a very slight distance from its origin, which is scarcely before the middle 

 n! the space between the first oblique and stigmatic veins, the second time 

 h.-ill'wav tlimee to the I i| i ' it 'the wing. Second oblique vein arising sligMitlv 

 in-arer the cubital than the first oblique vein, the first so near the base of 

 tile wing as to be verv short, and the first discoidal cell between them only 

 about twice as wide at the hind margin as at base. Legs long and slender, 

 the hind tibia- and tarsi nearly equaling the length of the wings. 



A Millie -prcies is known. 



