1918] Gibson and Holdridge — The Genus Narnia Stal 3 



Narnia wilsoni Van D. 



Narnia unlsoni Van Duzee, Ent. News, Vol. XVII, No. 10, p. 



384 (1906). 



Wilsoni differs from all other species in that it is much smaller, 

 and has red colorations on apex of head, basal joint of antennae, 

 and legs. 



This species occurs in California. 



A Key to the Genera of Anisoscelini A. and S. 



The following key includes all of the genera of the tribe Ani- 

 soscelini A. and S. Representatives of but three of the genera, 

 Chrondrocera Lap., Leptoglossus Guer. and Narnia Stal occur in 

 American north of Mexico, the other genera being limited to Cen- 

 tral and South America. 



The tribe may be characterized as follows: Head elongate, 

 antennae long and more or less slender. Thorax trapezoidal in 

 form, greatly depressed anteriorly, posterior lateral angles more or 

 less acutely angled. Posterior femora sometimes swollen but not 

 incrassated. Posterior tibiae with a broad thin dilation or fo- 

 liation which is often wider than the width across the elytra. 



The genera may be considered as grouped into two divisions, 

 Anisoscelaria n. n. those having the joints of the antennae simple as 

 in Anisoscelis and Chrondroceraria n. n. those having the joints of 

 the antennae more or less dilated as in Chrondrocera. 



The authors feel justified in placing Stenoscelidea within this 

 tribe as the characters of the hind tibiae are of greater importance 

 than the form of the antennae. 



1. First joint of the antennae much longer than the second 



Uranocoris Walk. 



First segment of the antennae not longer than the second, often 



much shorter 2 



2. Segments of antennae prominently dilated 8 



Segments of antennae not dilated 3 



3. Basal joint of antennae short, shorter than length of head 



Narnia Stal 



Basal joint of antennae long, as long or longer than length of 



head 4 



4. Basal joint of antennae equal to length of head, or slightly 



longer Leptoglossus Guer. 



Basal joint of antennae very much longer than length of head, 5 



