THE CANADIAN ENTOMOLOGIST. 261 



NOTES ON GENUS CATONIA (HOMOPTERA). 



BY E. P. VAN DUZEE, BUFFALO, N. Y. 



The synoptical table of the species of this genus published by me in 

 January, 1908, has become rather antiquated on account of the discovery 

 of a number of new forms. The following table includes all described 

 species from America north of Mexico : 



Apex of the head more or less angled, with the carina sharp ; the 

 lateral carinae of the front following its basal margin and forming a 

 distinct angle before the eye, where they join those of the vertex ; 



eastern species i. 



Apex of the head tumid, with the vertex sloping and confounded with 

 the base of the front in a common convexity, the carinse obsolete 

 there ; lateral carinse of the front following the contour of the eyes 

 western species 7 



1. Face conspicuously transversely banded 2 



Face not distinctly banded 6 



2. Front entirely black, the clypeus abruptly white ; elytra unicolorous 



brown, nervures impunctate 7, dimidiata VanD 



Front transversely banded with white opposite the antennae 3 



3. Elytra unicolorous, nervures impunctate 6, impimdata Fitch 



Elytra variegated, nervures punctate 4 



4. Larger, 7 mm.; front distinctly narrowed at base, which is but 



obscurely banded /, iiava Say 



Smaller, 5-6 mm. ; base of the front black 5 



5. Front much narrower at base ; vertex narrow, truncated before, its 



sides considerably produced before the eyes ; mesonotum 



variegated 2, cindifrons Fitch. 



Front hardly narrower at base ; vertex broad, obtusely angled before, 

 the sides not produced before the eyes ; mesonotum unicolorous, 

 castaneous j, pida VanD. 



6. Larger, 7 mm.; elytral areoles with numerous incomplete transverse 



veinlets ; apex of the mesonotum with a pair of ocellated black 



points 4^ grisea VanD. 



Smaller, 5 mm.; elytral areoles without transverse vein- 

 lets 5, pumila VanD. 



7. Front banded, its basal carinae indicated ; elytra fuscous, the areoles 



dotted and some of the transverse veins white 8,fusca VanD. 



Front without transverse bands 8, 



August, 1910 



