BRUES: PARASITIC HYMENOPTERA. 



91 



Alysia petrina, sp. nov. (Fig. 73.) 



Female. Length 5 mm. Ovipositor about 2 mm. Black or piceous, the 

 abdomen, except apex reddish or brownish. Anterior legs reddish; middle 

 and posterior pairs piceous or black. Specimen partly seen m ventral view, 

 the head greatly. widened behind; the large, externally arcuate mandible on 

 one side showing very distinctly. Body behind the scutellum showing the 

 dorsal view (i. e. the specimen split off to the dorsal wall). Metathorax 

 distinctly rugose-reticulate. Abdomen as long as the head and thorax 

 together; subpetiolate; first seg- 

 ment gradually widened from the 

 base to the apex which is a little 

 less than one-half as wide as long. 

 Second segment as long as the first, 

 but much wider than long; follow- 

 ing' together as long as the first 

 two; apex obtusely pointed. Ovi- 

 positor preserved to a distance 



nearly equal to the length of the abdomen and possibly still longer. Legs 

 moderately slender. Wings long and rather narrow, stigma and veins fus- 

 cous, the former short and broad, subtriangular. Radial cell long, almost 

 attaining the wing tip, the first section of the radius less than one-half as long 

 as the second. Three cubital cells, the second short, its. inner side one-half 

 longer than its upper. Recurrent nervure interstitial with the transverse 

 cubitus; submedian cell as long as the median; discoidal nervure broken 

 below the middle. 



Fig. 73. — Alysia petrina, sp. nov. Type. 



Type.— No. 2289 

 Scudder Coll.). 



M. C. Z., Florissant, Col. (No. 8812, S. H. 



Alysia exigua, sp. nov. (Fig. 74.) 



Length 5 mm. Yellow or light colored, the tips of the mandibles, antennae, 

 tarsi, and tips of posterior tibiae, black or blackish. The head and entire 



body are seen in ventral aspect. The 

 mandibles are very large and prominent. 

 Antelmae slender, with more than twenty 

 joints, their tips not being shown in the 

 specimen; the joints near the base are 

 from four to three times as long as thick, 

 tho^e nearer the apical portion becoming 

 somewhat shorter. Legs rather long and 

 stout, the posterior tibiae with a pair of long apical spurs. Wings long, 

 hyaline, the veins very slender and weakly colored. Stigma ovate, rather 



Fig. 74. — Alysia exigua, sp. nov. 

 Type. 



