26 [January 



gins of the pectus bordering on the mesothorax, a large oblique stripe 

 on the pleura connected behind with a large spot in front of each mid- 

 dle coxa, all pale yellowish ; pleura and pectus finely aciculate ; scu- 

 tellum and postscutelluin. yellowish, the space on each side black, mar- 

 gined posterior with yellowish ; metathorax rugosely punctured, its 

 posteriorly face transversely aciculate. with a stout, rather long, some- 

 what flattened, subobtuse, white spine on each side ; black, with a broad 

 longitudinal stripe on each extreme side, and on the posterior face 

 two longitudinal stripes, curved inward at tip and running down inside 

 of the spines to the base and covering the spines, white ; on each side 

 just behind the posterior wings a large yellow spot. Wings hyaline, 

 nervures and stigma blackish, the latter with a pale dot near the base. 

 Legs yellow, the femora tinged with honey-yellow; posterior coxae with 

 a black stripe on the outside. Abdomen robust, the base strongly ar- 

 cuated; first segment smooth and polished, yellowish, with the sides 

 and a large spot near the tip, black; second segment whitish, with a 

 broad black band at base, the basal and apical margins honey-yellow ; 

 remaining ses-ments whitish, more or less black at base ; none of the 



CO / 



black bands touch the lateral margins of the segments; ovipositor 

 piceous-black, two-thirds the length of the abdomen. Length 6j lines ; 

 expanse of wings 12 lines. 



Collection. — Dr. J. Gundlach. One specimen. 



Mesostenus strenuus. n. sp. 



Black: middle of face, orbits, annulus on antennae, collar, spot on mesothorax, 

 spot on pleura, scutellum, two lines and two spots on metathorax, legs, and 

 bands on the abdomen, white or yellowish; wings hyaline; metathorax with 

 two spines. 



Male. — Head black ; middle of the face, orbits, clypeus, mandibles, 

 except tips, and the palpi, whitish; antennae as long as the body, black, 

 with a white annulus beyond the middle. Thorax black, shining; 

 mesothorax sparsely and deeply punctured, the dorsal lines deeply im- 

 pressed, at the tip of the middle lobe a round white spot, and on the 

 inner margin of the side-pieces near the front a short whitish line; 

 pectus and pleura longitudinally striated ; the collar, tegulae, a line be- 

 fore and a spot beneath the anterior wings, a large spot on the pleura, 

 and another behind the posterior wings, all whitish ; scutellum white, 

 black at base, the carinas in front connecting with the mesothorax, as 

 well as the postscutelluin, white, the space on each side black, margined 

 posteriorly with white ; metathorax black, transversely rugose, with a 

 well defined transverse carina near the base, and on each side behind 

 a rather long, well developed, somewhat flattened, subacute spine, on 



