332 HETEROPTEROUS HEMIPTERA. 



long but little different in appearance from the corium : abdomen, 

 margined witb rufous ; feet rufous ; thighs a little thickened. 

 Length over three-twentieths of an inch. 



PAMERA*, Lepel. and Serv., nob. 



1. P. constricta. — Black ; thorax constricted near the mid- 

 dle ; hemelytra with hyaline lines ; anterior thighs dilated. 



Inhabits United States. 



Body black, punctured : antennae, second and third joints dull 

 honey yellow ; terminal joint slightly thicker than the third: 

 thorax convex, constricted a little behind the middle ; anterior 

 to the stricture impunctured ; posterior angles with an oblong 

 tubercle above : posterior margin snmewhat piceous : hemelytra 

 fuscous, with whitish lines and spots, those of the membrane 

 arquated : feet greenish-yellow ; thighs annulated with black 

 at tip ; anterior pair dilated, spinous beneath, black, yellowish 

 at tip and base : tibiae, anterior pair slightly thickened at tip. 



Length three-tenths of an inch. [777] 



Male. — Hemelytra pale with fuscous points and lines. 



Length about one-fifth of an inch. 



2. P. contracta. — Blackish ; thorax constricted near the 

 base ; hemelytra at base and two spots hyaline ; anterior thighs 

 dilated. 



Inhabits North-west Territory. 



Body piceous-black : head with a few hairs : antennae pale 

 yellowish, terminal joints fuscous; thorax subcylindric, with 

 hairs; much contracted behind the middle; behind the stric- 

 ture piceous, punctured : scutel punctured : hemelytra punctured 

 at base, fuscous, base of the corium and spot near its tip and 

 spot at tip of the membrane whitish : feet yellowish : anterior 

 thighs dilated, spinous beneath towards the tip and piceous in 

 the middle : anterior tibiae a little dilated at tip. 



Length one-fifth of an inch. 



I obtained this species on the expedition of Major Long to 

 the sources of the St. Peter's river. It is much like constrictus 

 nob., but the thoracic stricture is a little nearer to the posterior 



* The original word of these "authors is Pachymera, which Latreille 

 informs us is preoccupied. 



