NATURAL SCIENCES OF PHILADELPHIA. 399 



honey-yellow except tarsi, which are dusky; wings hyaline, iri- 

 descent, base of stigma pale; niesothorax shining; raetatliorax 

 finely transversely aciculate, the apex truncate, smooth and 

 shining; abdomen densely punctured, the apical margin of seg- 

 ments smooth, shining, and paler. Length 3^ lines. 

 Orizaba. (Sumichrast, No. 102.) 



4. Pimpla feralis, n. sp. 



% . Differs from punicipes only by the posterior tibiae and tarsi 

 being blackish, the former having a white annulus near base ; the 

 metatliorax not transversely aciculate, and the abdomen uniformly 

 very densely and finely sculptured, the apical margin of the seg- 

 ments not shining. Length 2|^-3j lines. 



Orizaba. (Sumichrast, No. 115.) 



5. Pimpla crassicauda, n. sp. 



9. Head, prothorax, and metathorax black: abdomen fuscous, 

 the middle segments paler; mesothorax, scutellums, pleura, and 

 flanks of metathorax honey-yellow ; antennoe pale fuscous, whitish 

 at base beneath ;tegul8e, line before, and most of legs white, pos- 

 terior coxae and femora yellow ; wings hyaline, iridescent ; shining; 

 abdomen subsessile, rather broad, punctured, the segments with 

 a slight lateral swelling above; ovipositor nearly as long as body, 

 sheaths black and incrassate. Length 4 lines. 



Orizaba. 



6. Pimpla albipes, n. sp. 



9 Head black, pubescent, palpi white, antennae black above, 

 brownish beneath, scape whitish beneath; thorax bright honey- 

 yellow, smooth and polished, the prothorax more or less, scutollar 

 region, and the metathorax or sometimes its base only, black ; 

 tegular and spot or line before, white; wings hyaline, iridescent, 

 stigma luteous ; legs white, extreme base and apex of posterior 

 tibiae, and tips of all the tarsi, dusky, sometimes the posterior 

 coxae and femora are pale honey-yellow; abdomen reddish-brown, 

 or obscure luteous, the first segment and apical margin of 

 remaining segments more or less black; ovipositor black. An- 

 tennas as long as abdomen, setaceous ; metathorax perfectly 

 smooth, polished, and rounded ; areolet of anterior wing triangular, 

 somewhat oblique; legs long and slender; abdomen elongate, 

 robust, strongly punctured, shining, first segment impunctured, 

 quadrate, excavate at base, remaining segments transverse, sub- 



