HEMIPTERA— HOMOPTERA— PSYLLID^. 277 



sends one offshoot along the middle of the wing, which forks at a little more 

 than half-way to the tip, the forks curving a little downward ; the other 

 offshoot parts widely from the upper, but when it nears the inner margin, 

 at a little beyond the middle of the wing, it is connected by a cross- vein 

 with the margin, while it itself passes with a strong curve to the apical mar- 

 gin just beyond the limits of the straight inner margin. Besides these veins 

 there are two others, which are obscure and may originate independently 

 or from this central vein near the base ; the upper strikes the upper margin 

 a little before the middle of the wing and runs parallel to the upper offshoot 

 of the principal vein ; the other, the anal vein, which is more uncertain, 

 strikes the inner margin a little nearer the base, reaching it with a similar 

 but reverse obliquity. 



Length of body, S"" ; breadth, 0.75°"" ; length of wing, 2°"° ; breadth, 

 O-TS""". 



Florissant. Four specimens, Nos. 310, 349, 7598, 12017. 



2. CATOPSYLLA gen. nov. (Mara,, Psylla). 



Belongs to the subfamily Psyllinge, in which the petiole of the cubital 

 vein is distinctly shorter than tlie discoidal portion of the subcostal. It is 

 most nearly related to Psylla itself, and indeed differs from it only in the 

 excessive length of the cubital cells, which are more than a third the length 

 of tlie wing, and besides are of very simple and similar structure, in which 

 respect it agrees better with Pachypsylla, recently described by Riley, 

 though the cells are not so long as there and the two sides of the wing are 

 more symmetrical in form, the apex of the wing falling exactly in the mid- 

 dle line ; the upper cubital branch falls barely below the middle of the 

 apex of the wing. The wing was pretty evidently membranous, and its 

 broadest portion is in the middle of the outer half, before which it decreases 

 regularly and gently in size, both front and hind margins being nearly 

 straight. 



A single species is known. 



Catopsylla prima. 



Wings fully twice as long as broad, largest in the strongly rounded 

 apical half, decreasing regularly in size toward the base. Lower fork of 

 subcostal vein forming with its stem a regular, very gently arcuate curve 

 and terminating considerably above the apex of the wing, its upper branch 



