No. 34-] HEMIPTERA OF CONNECTICUT : ARADIDAE. 739 



Tribe MEZIRINI. 



Species of small to moderate size, having the hemielytra flat, 

 with basal coriaceous portion distinct from membrane ; scutellum 

 not extending beyond middle of abdomen. 



Key to Genera. 



1. Scutellum broadly rounded apically 2 



Scutellum triangular Aneurus 



2. Ventral abdominal segments with a distinct carina between the 



spiracles and the border ; disk almost flat Neuroctenus 



Ventral segments without carina; disk somewhat convex Mezira 



Aneurus Curtis. 



This genus includes rather small species with surface shining; 

 the membrane is veinless and the fourth antennal segment is long. 



Key to Species. 



i. Second antennal segment shorter than the first; size small, length 



about 4 mm fiskei 



Second antennal segment not shorter than first; larger, length 



about 5.3 mm 2 



2. Antennae moderately stout, the fourth segment a little longer than 



the third inconstans 



Antennae slender, the fourth segment more than twice as long as 

 the third simplex 



A. fiskei Heidemann. 



Proc. Ent. Soc. Wash., vi, 164, 1904. 



This is a small species often found under loose bark of living 

 shagbark hickory and under dead hardwood bark ; it has also been 

 taken under sycamore and sourwood bark. 



Brookfield, 27 July, 1910 (E. L. D.).' 

 A. inconstans Uhler. 



Proc. Bost Soc. Nat. Hist, xiv, 105, 1871. 



A common species, frequently met with under dead bark of 

 maple, oak, and other trees, usually saplings. 



Lyme, 14 May, 191 1 (A. B. C.) ; New Canaan, 5 Sept., 1918 (B. H. W.) ; 

 6 Sept., 1918 (M. P. Z.) ; North Haven, 4 June, 1917 (M. P. Z.) ; Portland, 

 29 May, 1915 (F. W. Haasis) ; Hamden, 25 May, 1920 (P. G.) ; Orange, 

 25 May, 1920 (B. H. W.) ; Cornwall, 5 June, 1921 (B. H. W.), 17 July, 

 1921 (M. P. Z.). 



A. simplex Uhler. 



Proc. Bost. Soc. Nat. Hist, xiv, 106, 1871. 



An extremely rare species known only from Vermont and 

 Massachusetts. 



Neuroctenus Fieber. 



Species of moderate size, with minutely granulated surface ; the 

 membrane has distinct veins and the fourth antennal segment is 

 not distinctly longer than the third. The most striking generic 



