49 8 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Head not so strongly produced vertically; genae medium or low, 

 not equal to the height of an eye ; head usually as long or longer 

 than the width of vertex (p. 509) Orthotylini 



Tribe SEMIINI. 

 Semium Reuter. 

 S. hirtum Reuter. 



Ofv. Kongl. Sv. Vet.--Akad. Forh., xxxii, No. 9, 80, 1876. 



Length 2.8 mm., width 1 mm. ; legs and antennae red ; head, 

 apex of pronotum and sides of thorax rosy red; basal half of 

 pronotum, clavus, bar across apex of corium, and tip of cuneus, 

 velvety brown, remaining parts of corium and cuneus white; 

 densely clothed with erect bristly pubescence. 



Occurs on Euphorbia adenoptera, living on the red underside of 

 the leaves. 



New Jersey. 



Tribe HALTXCINI. 



Key to Genera. 



1. Head with well denned sharp basal margin; black forms 2 



Head without a well defined sharp basal margin ; head and dorsum 



thickly clothed with closely appressed scale-like hairs and inter- 

 spersed with more erect long pubescent hairs ; small species, vari- 

 ously colored but never black (p. 498) Parthenicus 



2. Antennae very long and slender, segment ii four or more times 



longer than segment i; brachypterous forms common; oval, 



strongly convex (p. 499) Halticus 



Antennae shorter, segment ii little more than three times the length 

 of segment i ; usually larger and more oblong forms 3 



3. Antennae with short fine pubescence, head and body nearly 



glabrous, shining black (p. 500) Strongylocoris 



Antennae and head with long coarse black hairs ; length of hairs 

 on antennal segment iii equal to three times the thickness of seg- 

 ment (p. 500) Orthocephalus 



Parthenicus Reuter. 



P. vaccini (Van Duzee). 



Pomona Jour. Ent, Zool., vii, 117, 1915. 



Female: Length (macropterous) 2.7 mm., width 1.05 mm.; 

 head strongly produced like a Criocoris, ecarinate; pale, tinged 

 brown on pronotum and sCutellum ; dorsum, legs, and antennae 

 speckled with brown, the brown on hind femora darker and with 

 spots joining in patches ; thickly clothed with silvery scale-like 

 hairs, becoming golden brown on corium and black on parts of 

 embolium and cuneus, also with much longer pale pubescent hairs 

 on head, margins of pronotum and hemelytra. 



Male: Length 3.5 mm., width 1 mm. ; very similar to the female 

 but more elongate. 



