38 AMERICAN HYMENOPTERA. 



Luteotis, eyes and thorax sulphur-yellow , aniennce black , wings hyaline, 

 stigma and nervures black. 



Length, 23 mm. 



Head strongly punctured, a longish, clearly defined tubercle below 

 the antennae ; antennal regions projecting, separated from the eyes 

 by an oblique depression which extends near to the inner side of each 

 antenna ; tips of the mandibles piceous black ; antennae longer than 

 the body, densely pilose, the third joint longer than the fourth and fifth 

 together, black, with the apical joints brownish; thorax pilose, shin- 

 ng, impunctate ; metanotum without keels. 



Wings hyaline, stigma and nervures black ; discocubital vein arcuate, 

 not appendiculate ; bulla received a little beyond the middle ; nervulus 

 interstitial, nervellus broken below the middle. 



I have not seen the type or a specimen of this species, and 

 can only give the slightly modified original description. 



Type. — British Museum. 



This species may apparently be readily recognized by the 

 black antennae and arcuate discocubital vein, though these 

 may vary to some extent. 



Distribution. — Panama (Volcan de Chiriqui, 2,000-3,000 

 feet). 



Opliion coloradensis Felt. 



Genophion coloradensis Felt, New York State Mus., Bull. 76, p. 



124, 9 (nineteenth Rept. State Ent.) 1904. 



Ferruginous, thoracic sutures black, eyes small, wings hyaline tinged 

 with fulvous, discocubital vein angularly broken and appendiculate . 



Length, 9-12 mm. ; wing, 9-12 mm. ; spread, 20-25 mm. ; antennas, 

 13 mm. 



Ferruginous ; ocelli small, nearly contiguous, the posterior distant 

 from tops of eyes their own diameter; eyes small, distant from the 

 base of the mandibles, only slightly emarginate ; antennae fulvous, 

 about as long as the body; clypeal foveae deep, dark brown. 



Thorax ferruginous with sutures black, metathorax with three well- 

 developed carinae, one dorsal, two lateral, radiating from the inser- 

 tion of the abdomen ; wings hyaline, basal half tinged with fulvous ; 

 stigma flavous, nervures fulvous, discocubital vein angularly broken 

 and more or less distinctly appendiculate — in one type only a notch, 

 and in the other well marked — nervulus antefurcal to interstitial, ner- 

 vellus broken below the middle ; first recurrent vein about one-half the 

 length of the second ; bulla of second recurrent vein near the disco- 

 cubital vein, that of the latter about one-third the distance from the 

 apex to the second recurrent vein. 



