428 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Arolia prominent, always arising approximate at base between the 

 claws (fig. 49: 33-60), never connate with them but sometimes 

 minute pseudaroha are also apparent on the inner curve of the 

 claw (fig. 49: 45-47, 58-60) ; free, more or less Hnear, converging 

 or diverging at the apices g 



7. Ultimate tarsal segment incrassate (fig. 49: 22), always thicker 



than the preceding; pseudarolia broadly involving the claws 

 (fig. 49: 22-24) ; tibiae destitute of spines; lora confluent with 



genae Bryocorinae, p. 478 



Ultimate tarsal segment Hnear ; pseudarolia not as the above ; lora 

 usually distinctly separated from the genae 8 



8. Prothorax simple, without annuliform apical stricture, certain 



forms with a somewhat flattened apical collar but in such case 

 the abdomen is constricted at base and the claws curved only at 

 extreme tips (fig. 49: 15-17) ; male genitalia distinctive, the tip 

 of penis twisting to the left, lying closely within bend of left 



clasper, extending downward and beyond it to the left side 



Phylinae, p. 428 

 Prothorax with annuliform apical stricture, sometimes obsolete 

 above in the middle but forming a distinct collar; claws usually 

 sharply bent (fig. 49: 18-20) ; male genitalia not as the above 



DiCYPHINAE, p. 476 



9. (6) Arolia diverging at their apices (fig. 49 : 55-60) 10 



Arolia converging at their apices (fig. 49 : 33-54) 



Orthotylinae, p. 497 

 10. Prothorax without ring-like apical constriction, often with sulcus 

 impressed near front margin of calli but never extending over the 

 sides ; lateral margins of disk usually carinate to anterior angles ; 

 first tarsal segment much longer than segment ii and equal in 

 thickness; tarsal segments scarcely overlapping at joints and thus 



very flexible (straw-climbers) Mirinae, p. 545 



Prothorax with a ring-like apical constriction which extends over 

 the sides and beneath, sometimes obsolete on median line above, 

 and more rarely it may be entirely absent but in such case the 

 abdomen is constricted at base; lateral margins of disk fre- 

 quently carinate but never extending forward upon collar; first 

 tarsal segment short, rarely longer than segment ii except in the 

 Resthenini, but when longer, the pronotal collar very distinct and 

 segment i much thicker than segment ii; tarsal segments with 

 tips overlapping at joints and thus practically inflexible (leaf- 

 walkers) Capsinae, p. 550 



Subfamily Phylinae. 

 Key to Tribes. 



1. Pronotum without flattened apical collar; abdomen not constricted 



at base 2 



Pronotum with a more or less flattened apical collar but without 

 distinct stricture separating it posteriorly; abdomen usually 



distinctly constricted at base, usually elongate forms 



(p. 474) Hallodapini 



2. Prosternal xyphus convex, not distinctly margined, pseudarolia 



minute or wanting (fig. 49: 1-12), connate upon the inner angle 

 of the claw and rarely projecting free for a space greater than 

 the base of attachment, nor extending beyond tips of claws . .Phylini 

 Prosternal xyphus depressed on its disk, its margins more or less 

 elevated ; pseudarolia connate for the full length and frequently 

 projecting beyond tips of the claws (fig. 49 : 13), or attached only 

 at the basal angles and extending free and parallel with them to 

 the tips (fig. 49: 14) (P- 473) Oncotylini 



