I40 TRANS. ST. LOUIS ACAD. SCIENCE. 



covering the whole lower surface. 4. On abdominal joint 1 the highly 

 polished surface is confined to the anterior excavation, the carina? only 

 extending halfway to the tip; joints 2-7 mostly with a very narrow san- 

 guineous line behind. 5. The ovipositor is less than £ as long as the 

 body, and the sheaths are pubescent rather than hairy. Venter whitish. 

 6. The front coxa? are white, except sometimes externally; both trochan- 

 ters of all the legs are white, but the basal one of the 4 hind legs is supe- 

 riorly rufous; and in the hind tibiae the terminal | (not &) is black, and 

 the tarsi are black with the basal §-J of joints 1-5 white. Length $ .26- 

 .32 inch. Front wing $ .22-. 27 inch. Ovipos. .10-12 inch. 



The 0" differs from the O. only as follows :— 1. The clypeus and face are 

 white except the terminal fovea? on the face, and the whole scape is white 

 beneath. 2. The whole mesosternum and its pleura halfway to the wing 

 is bright pale rufous. 3. The carina? on abdominal joint 1 extend nearly 

 to the tip, and the whole space between them is glabrous and polished. 

 4. The anterior and middle coxa?, besides all the trochanters of all 6 legs,, 

 are white immaculate. Length, o* 3° inch. Front wing tf .24 inch. 



One 6* ; three 2. Easily known from my o* of inquisitor by 

 the white face, the white orbits, and very remarkable white line 

 beneath the antennas ? , the rufous mesosternum S 2 , and the white 

 scutel o* 5 . 



Pillipla Vidua, n. sp. — $.— Differs from the normal inquisitor $ only 

 as follows:— 1. A white orbit extends from the insertion of the antenna? 

 to the occiput. 2. It is only the last joint of the scape and the basal joint 

 of the flagellum that is rufous beneath, the rufous color terminating sud- 

 denly. 3. The metathorax is rather closely aciculate up to the 2 carina?, 

 leaving the space between them, the posterior declivity, and the lower 

 part of the pleura, all highly polished. Tegulae, a line under the front 

 wing, a narrow line which is basally clavate underlying the humeral su- 

 ture nearly to its tip, a transverse line at the tip of the scutel and another 

 behind it, all white. A small, indistinct, rufous spot above the origin of 

 the middle coxa?. 4. In abdominal joint 1 the highlv polished surface is 

 confined to the anterior excavation, the carina? only extending halfway 

 to the tip, and there is no sanguineous tip to any of the joints. 5. The 

 ovipositor is less than h. as long as the body, and pubescent rather than 

 hairy; and the venter is distinctly dull rufous. 6. In the front legs the 

 coxa? and both trochanters are white; in the middle legs the 2d trochan- 

 ter is white, and there is a faint fuscous annulus on the second \ of the 

 tibia; and in the hind legs the 2d trochanter is white, the femur is tipped 

 with black up to the white knee, and the tibia has its 2d and terminal \ 

 black. Otherwise as in inquisitor $. Length $ .26 inch. Front wing $ 

 .20 inch. Ovipos. .10 inch. 



One 2 ! d 1 unknown to me. Distinct at once from inquisitor 

 J by its short white orbits, its white bands on and behind the 

 scutel, and the rufous mesosternal spot ; and from script if rons ? 



