TONGLOGICg 
AMERIGANA 
VOL. V. BROOKLYN, JULY, 1889. 
A GENERIC SYNOPSIS OF THE BYTHOSCOPIDE. 
By Wm. Ii. AsHmeap. 
Famity V. BYTHOSCOPIDE£. 
Head as wide or wider than the thorax, when narrower very thin antero- 
posteriorly with a sharp superior margin; the frons in the former case obtuse or 
slightly convex, in the latter, flattened: Ocelli 2. situated on the trons between the 
antenne. Antennze setiform, 3-jointed, the basa] joints short, thick, placed in cavities. 
Thorax well developed, wider than long, or else hexagonal, slightly convexly rounded, 
punctate, or with delicate striations. Scutellum rather large, triangular. Elytra 
subopaque, seldom entirely translucent. Vegulz present. Posterior coxze contiguous. 
Tibiz prismatic, the hind edges of posterior pair most frequently armed with a double 
row of numerous strong spines or else with smal] denticulations or fine cilix. Tarsi 
3-jointed. 
This family is Of rather small extent and represented by but com- 
paratively few genera; in it I have included, as subfamilies, the genera 
Athalon Latreille, and Lurymela Burmeister, the position of which has 
been the subject of considerable controversy with systematists. 
The former, seems to be closely allied to the Membracide where 
Stal placed it; the latter, to the /assid, but their general facies and the 
position of the ocelli are Bythoscopid, and I believe they belong in this 
group. 
The following table will enable one to recognize these subfamilies : 
SUBFAMILIES. 
Head transverse, antero-posteriorly very thin, much narrower than the thorax ; frons 
flat, upper margin sharp ; thorax hexagonal, the sides usually sinuate. . . 
SUBFAMILY I. ASTHALIONINZE. 
ENTOMOLOGICA AMERICANA. VOL. V. 2 JULY 1889. 
