100 HYMENOPTERA 



on each side of the face, which is broad and truncate opposite the 

 insertion of the antennae^ and narrows to a point at the base of the 

 mandibles ; the flagelkim^ except two or three of the basal joints, 

 fulvous beneath. Thorax slightly shining, A'cry finely and closely 

 punctured above ; the raetathorax smooth, shining and impunctate ; 

 wings sub-hyaline, the nervures black ; an interrupted line on the 

 collar, and the tubercles, yellow. Abdomen elongate-ovate, smooth 

 and shining. 



Length, Si lines. 



P. RELEGATUs. Smith, Traus. Ent. Soc, 1876, ]). 485. 



Male. Black ; head sub-opaque, very closely and finely punctured ; 

 the clypeus and inner orbits of the eyes, as high as opposite the 

 insertion of the antennae, yellowish-white, the mandibles with a 

 longitudinal white stripe. Thorax : The disc closely and finely 

 punctured ; the metathorax with a triangular enclosed space at 

 its base, which at its basal margin has a series of abbreviated 

 strise; a spot on each side of the collar, and the tubercles, yellow. 

 Wings sub-hyaline and iridescent, the nervures black ; the first recur- 

 rent nervure uniting with the first transverso-medial nervure ; the 

 second recurrent received near the apex of the second submarginal 

 cell; the calcaria pale testaceous. Abdomen oblong-ovate, shining; 

 towards the base very finely punctured. 



Length, 82 lines. 



P. cAPiTosus. Smith, Trans. Ent. Soc, 1876, p. 485. 



Female. Black ; the head nearly quadrate above, slightly narrowed 

 anteriorly towards the clypeus, closely and finely punctured ; the 

 flagellum, except the three basal joints, fulvous beneath ; a small 

 lunate yellow spot on each side of the face at the lower orbit of the 

 eyes. Thorax ovate, very finely punctured ; a minute spot on each 

 side of the collar, and the tubercles, yellow ; metathorax smooth and 

 slightly shining ; wings sub-hyaline, the nervures black ; the first 

 recurrent nervure uniting with the first transverso-medial nervure ; the 

 second recurrent received near the apex of the second submarginal 

 cell ; all the calcaria pale testaceous. Abdomen ovate, smooth and 

 shining. 



Length, 3 lines. 



aenus-HALICTUS. 

 Latreille. 

 Ocelli disposed in a curve. Antennse long, especially in the male ; 

 no fossette near the internal superior margins of the eyes. Abdomen 



