690 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



Subfamily Emesinae. 



Key to Genera* 



1. Anterior trochanters spineless 2 



Trochanters of anterior legs with two small but distinct spines, 



anterior tibiae not half as long as femora Ploiaria, p. 690 



2. Anterior tibiae about half the length of the femora 3 



Anterior tibiae nearly as long as femora Ploiariola, p. 690 



3. Tylus very prominent; prothorax entirely distinct from meso- 



thorax ; head fully one-half the length of the anterior coxae 



Barce, p. 690 

 Tylus not prominent; prothorax not entirely distinct from meso- 

 thorax ; head less than one-half as long as the anterior coxae . . 



Emesa, p. 692 

 Ploiaria Scopoli. 



One species only of this genus may be found in Connecticut. 

 P. simplicipes Uhler. 



Proc. Bost. Soc. Nat. Hist, xix, 430, 1878. 



This species was described from Massachusetts, and would seem 

 of possible occurrence in Connecticut. 



Ploiariola Reuter. 



Key to Species. 



Mesonotum with a prominent median tubercle tuberculata 



Mesonotum not tuberculate errabunda 



P. errabunda (Say). 



Hem. New Harm., 34, 1832. 



This species is recorded from Virginia, Maryland, New York 

 and New Hampshire. It should be found in Connecticut. 

 P. tuberculata Banks. 



Psyche, xvi, 46, 1909. 



A species described from Virginia and Sea Cliff, N. Y., the 

 latter place being on Long Island across the Sound from 

 Connecticut, and also recorded from Maine. 



Middlebury, 26 May, 1911 (W. E. B.). 



Barce Stal. 



Key to Species. 



1. Femora tmbanded, or possibly a band near apex on one pair only; 



median carina of mesothorax distinct 2 



Median and posterior femora banded; median carina of meso- 

 thorax not distinct annulipes 



2. Last abdominal segment in female slightly emarginate .uhleri 



Last abdominal segment in female deeply and roundedly emarginate 



fraterna 



* The tables in this group are adapted from Banks, and may need to be 

 revised when more material is at hand. 



