HEMIPTEBAHOMOPTERA APHIDES. 245 



1. CATANEURA gen. nov. (Hard, vevpa). 



Head very small, apparently destitute of frontal tubercles. Antenme 

 unknown. Fore wing's with the stigmatic vein arising from the middle of 

 the -stigma. Cubital vein twice forked, the first time f;>r from its origin, 

 which is near the middle of the proximal half of the space between the base 

 of the first oblique and stigmatic veins, the second time about as far beyond 

 the origin of the stigmatic as that is beyond the first fork of the cubital 

 vein. The second oblique vein arises a little nearer the first oblique than 

 the cubital vein, the first at a slightly less angle, the first discoidal cell 

 between them about three times as broad on the hind margin as at the base. 

 Legs moderately slender, the hind femora about half as long as the fore 

 wings. Abdomen broad ovate, apparently with a short and stout cauda. 



Table of the species of Catancura. 



First discoidal coll more transverse than longitudinal; cubital vein very distant from the stigmatic, 

 approaching the second oblique vein 1. C. obtain. 



First discoidal cell as longitudinal as transverse; cubital vein approximating the stigmatic rather 

 than the second oblique vein 2. C. rileyi. 



I. CATANEURA ABSENS. 



The single specimen shows little beside the wings folded flatly over 

 the back, but the head and thorax and one of the femora are also preserved. 

 The fore wing is about three times as long as broad. The first oblique vein 

 is straight and very long, parting at the postcosUil at an angle of about 

 thirty-five degrees; second oblique vein slightly sinuous, parting from the 

 postcostal at an angle of about forty-five degrees ; the first discoidal cell 

 between them very long considering that it is more transverse than longi- 

 tudinal, the base moderately narrow, the apex, as measured on the hind 

 margin, about three times as broad as the base. Cubital vein taking an 

 exceptionally low course, so as to be very distant from the stigmatic vein 

 throughout, first forking half-way to the hind border, then bent outward. 

 Stigmatic vein arcuate and divergent at base. 



Length of body, 4""" ; of fore wing, 6.5 mm . 



Florissant. One specimen, No. 607. 



'2. CATANEURA RILEYI. 



Tlio head with part of the antenna-, the thorax with most, of the legs 

 and one winir, and, obscurely, the abdomen are preserved in the single 

 example known. The fore wing is about three and a half times longer than 



