24 bulletin: museum of comparative zoology. 



Chalcis perdita, sp. nov. 



Length 4-7.5 mm. Head and thorax with coarse thimble-like punctures 

 which do not merge into striations on the pro- and mesothorax ; the punctures 

 largest on the scutellum and the upper part of the mesonotum. Body pre- 

 sumably dark or black with the tarsi, venter of abdomen, and posterior margins 

 of abdominal segments reddish or rufous. Antennae dark brown, black bas- 

 ally, the joints near the middle of the flagellum wider than long. Scutellum 

 raised anteriorly and sloping back, projecting laterally over the metapleurae. 

 Metanotum rather regularly hexagonally reticulate, its lower hind angles 

 laterally produced. Abdomen as long as the head and thorax, smooth, shaped 

 as in C. ovata Say. Posterior femora very broad, almost as wide as long, 

 with about eight moderately large teeth toward the apex, the tibiae evenly 

 arcuated. Wings hyaline, marginal vein about two-thirds the length of the 

 submarginal ; stigmal short and oblique, about twice as long as the thickness 

 of the marginal vein, and not or imperceptibly enlarged at the tip. 



Described from three specimens. 



Type.— No. 2095 M. C. Z., Florissant, Col. (No. 4801, S. H. Scudder 

 Coll.). Paratypes, Nos. 2096-2097, M. C. Z.( Nos. 7817 and 9547, 

 S. H. Scudder Coll.). All are seen nearly in profile in much the 

 same position. 



No. A76 and reverse in the collection of the American Museum of 

 Natural History collected by Professor Cockerell at Station 13 appear 

 to be this species, but are seen in dorsal view with the wings not pre- 

 served. The punctures on the head above are elliptical and more or 

 less confluent. 



Spilochalcis scudderi, sp. nov. 



Length 5.5 mm. A specimen seen in ventral aspect, with the head bent 

 down. Inner margins of eyes parallel, the front coarsely punctate, with an 

 oval smooth space centrally which shows microscopic circular aciculations. 

 Antennae 13-jointed, distinctly clavate, the scape a little more than half as 

 long as the flagellum. Joints beyond the middle of the flagellum one-half 

 wider than long. The antennae are inserted just about on an imaginary line 

 drawn between the lower margins of the eyes. Sides of face below obliquely 

 striated, cheeks smooth. Projecting sides of metanotum below irregularly 

 reticulated, the lateral angles angularly produced. Posterior coxae more 

 than half as long as the femora, slender and about twice as long as the abdomi- 

 nal petiole. Posterior femora oval, somewhat less than twice as long as broad. 

 Abdomen rounded at the tip, distinctly longer than the thorax. 



Described from one specimen, seen in ventral aspect. The antennae 



