NORTH AMERICAN HYMENOPTERA. 269 



This species is allied to P. akcmor, but may be distinguished by 

 the head being concolorous with the body, whereas it is black in that 

 species, and by the paler color of the entii'e insect. 



Photopsis lepidus n. sp. 



3Iale. — Uniform dark honey yellow ; head transversely rounded, not as wide 

 as the thorax, minutely punctured ; eyes and ocelli large and prominent, tips of 

 mandihles black ; antennie fusco-ferruginous, scape very short, minutely punc- 

 tured, joints of the flagellum crenulate when viewed laterally; thorax robust, 

 jn-othorax narrow, niesothorax convex, shining, very feebly punctured and bear- 

 ing two lateral, longitudinal, impressed lines on the disc; scutellum prominent, 

 triangular, rounded posteriorly, shining, very feebly punctured, metathorax 

 roundly truncate, smooth, dorsal groove extending to apex, lateral lobes of meso- 

 thorax very prominent, closely and finely punctured ; wings ample, three sub- 

 marginal cells, the first as large as the second and third combined, second trian- 

 gular, receiving the first recurrent nervure before the middle, second elongate 

 subquadrate, its outer nervure arcuate, receiving the second recurrent at middle ; 

 marginal cell short, roundly truncate, stigma large, fuscous ; all the nervures 

 fuscous : tegulie large, dark honey yellow, polished ; legs uniform honey yellow, 

 very feebly pubescent ; abdomen elongate, sparsely clothed with pale hairs, basal 

 segment pyriform and having on the disc a shallow, longitudinal groove, second 

 and following segments shining, more or less stained laterally with testaceous 

 patches, disc of second segment beneath castaneous. Length 16 mm. ; expanse 

 of wings 28 mm. 



Hab. — Colorado. 



This species is allied to P. ampla Blake, but may be separated by 

 the head being concolorous with the body, whereas in the latter it is 

 black. 



I'liotopsis tapajos Blake. 



Male. — Uniform dark honey yellow ; thiuly clothed with long whitish hairs ; 

 head subquadrate, as wide as the thorax, very finely punctured, shining, the 

 space behind the ocelli deeply impressed ; eyes large, round and prominent; an- 

 tenna; brownish, pale yellow at base ; tips of the mandibles black ; thorax densely 

 punctured; mesothorax with four longitudinal, impressed lines; metathorax 

 very coarsely reticulated, roundly truncate; tegulse small ; wings hyaline, mar- 

 ginal cell elongate, rounded to tip, first submftrginal long, narrow, second ob- 

 liquely subquadrate, pointed towards the base and receiving the first recurrent 

 nervure a little before the middle, third nearly obsolete, narrowed beneath, so 

 that its apical nervure is opposite to and joins the second recurrent ; stigma 

 nearly black, the apical half lying within the marginal cell ; a faint fuscous 

 cloud in the discoidal region, nervures fuscous; legs thinly clothed with pale 

 hairs, coxse and trochanters pale yellow ; abdomen elongate ovate, petiole closely 

 punctured, second segment shining, very finely and remotely punctured, apical 

 margins of the segments fringed with pale white pubescence, ventral segments 

 same as above ; apex armed with two acute, recurved spines. Length 11-12 mm. ; 

 expanse of wings 19 mm. 



Hab. — Texas. Mr. Belfrage. 



