73$ CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Subfamily Metacaxthinae. 

 Vertex without a long anterior process, but sometimes acutely 

 elevated, and separated from tylus by a deep impression; hemi- 

 elytra membranous ; pronotum globosely enlarged posteriorly. 

 One genus occurs in our fauna. 



Jalysus Stal. 



Species of moderate size, having the corium impunctate, linear 

 posteriorly; scutellum spinous; ventral surface of abdomen 

 impunctate ; orifices produced in free slender process visible from 

 above. One species occurs in New England. 

 J. spinosus (Say). 



Am. Ent, i, 14, 1824. 



Reddish brown; eyes, fourth antennal segment, rostrum, and 

 apex of corium dark brown; legs more or less dotted. Abdomen 

 fusiform ; body constricted at middle. Length 6-8 mm. 



Taken by sweeping in meadows and woodland undergrowth. 



New Haven, 4 Nov., 1903 (H. L. V.), 26 Feb., 1911, 11 May, 1911 

 (A. B. C.) ; North Haven, 3 Aug., 1905 (H. L. V.) ; Lyme, 5 Aug., 191 1 

 (A. B. C.) ; Rainbow, 29 May, 1915 (B. H. W.) ; Bridgeport, 20 Sept., 1920 

 (B. H. W.). 



Family ARADIDAE. 



By Howard Madison Parshley, Sc.D. 



This family, one of the most peculiar among the Hemiptera, 

 contains insects of flattened form, living for the most part under 

 the dead bark of trees. The head is horizontal, with the tylus 

 greatly enlarged to accommodate the coiled trophic setae ; rostrum 

 four-segmented, the first scarcely visible; ocelli absent; antennae 

 four-segmented ; tarsi two-segmented. 



Key to Subfamilies. 



Head narrowed behind eyes, eyes projecting strongly; trochanters 

 connate with femora ; abdominal spiracles placed near basal 

 margin of each segment Aradinae 



Head wider just behind eyes than immediately in front of them, 

 eyes not projecting; trochanters free; spiracles midway between 

 basal and apical margins of segments Mezirinae 



Subfamily Mezirinae. 

 This group, in addition to the characters given in the key, is 

 peculiar in lacking ventral sulcation, and in having the first anten- 

 nal segment longer and gradually narrowed toward base. The 

 species are often smooth and shining, and the rostrum is very 

 rarely long enough to reach beyond the base of the head. One 

 tribe occurs in our fauna. 



