MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDyE. 87 



the length of first and second together, black; scape and two or three ajtical Joints 

 yellow; prothorax elongate, as long as metathorax, convex, snbtrnncate anteriorly, 

 nariowed and somewhat contracted posteriorly ; metathorax short, convex, fusco- 

 ferruginons ; metathorax elongate, ronnded behind, longitudinally rugose at base 

 above; wings narrow, scarcely reaching tips of posterior femora, fuscous, with a 

 largo rounded hyaline spot beneath base of stigma nearly as broad as the wing; 

 legs rather paler than body, anterior pair very long; coxa; and trochanters as long 

 as femora, which are longer than tibia', tarsi chelate; four posterior legs much 

 shorter than anterior pair, all the femora much thickened towards base; abdomen 

 elongate, smooth and shining. (C/v-ssoh.) 



Habitat. — Texas. 



Types in Coll. American Ent. Soc. aiul National Museum. 

 The type specimen in the National Museum came with the TJelfrage 

 collection. 



Dryiiius americanus Ashm. 



(PI. V, Fig. 3,9.) 



Mystrophoru^ antericunu>< Ashm., Ent. Am., in, p. 128. 



9 . Length 0.3""". Head, thorax, and legs brownish yellow; head 

 above dusky; eyes brown-black; antenniie dusky at tips; abdomen 

 smooth, polished, black. The head when viewed from in front is triau- 

 gular, finely and regularly punctate, impressed above. Antennje 10- 

 jointed, the third joint as long as the fourth, fifth, and sixth joints 

 united. Prothorax much elongated, narrower, and more than thrice 

 as long as the mesonotum, finely microscopically sculptured. The 

 short spoon-shaped wings are hyaline, except a smoky transverse band 

 across the front wing, broad enough to inclose the stigma and stigmal 

 vein. 



Habitat. — Jacksonville, Fla. 



Types in Coll. Ashmead. 



Two specimens. The first specimen captured was in poor condition, 

 and when my original description was drawn up the anterior chelate 

 tarsus Avas not observed, and it was consequently placed in the genus 

 MystrophoruSj which is distinguished by having the anterior tarsi sim- 

 ple, not chelate. 



LABEO Ilaliday. 



Ent. Mag., i, p. 273 (1833). 



(Type L. crcisiis Westw.) 



Head transverse, the vertex broad, siibconvex, the occiput deeply 

 concave; eyes large, oval, prominent, but much smaller than in either 

 Gonatopus or Dryinus, and occupying only the anterior half of the 

 sides; the cheeks oblique; ocelli 3, snmll, triangularly arranged; a 

 delicate keel extends forward from the front ocellus. 



Antenna^ 10-jointed, filiform, inserted just above the clypeus, slightly 

 thickened towards the tips; scape thickened, a little curved, about 

 twice as long as the pedicel, or a little shorter, or as long as the first 

 flagellar joint. 



