MEXICAN HYMENOI'TERA. O 



side of basal middle and a black longitudinal mark down the middle of 

 posterior truncation, white or whitish; wings hyaline, faintly yellow- 

 ish, nervures brown, stigma luteous ; legs luteous-yellow, irregular mark 

 on posterior coxte behind, all the femora above and behind except tips, 

 and the four anterior tibi;ie behind, more or less fuscous, tips of tarsi 

 black, four anterior coxa? and trochanters whitish ; abdomen above 

 black, subiridesceut, base of first segment, lateral and rather broad api- 

 cal margins of all the segments, and the venter entirely, white, Head 

 large, antenna} long, mesothorax feebly punctured, slightly striated on 

 each side of the middle, scutellum flat, metathorax shining, with well 

 defined cariuae forming a small pentagonal central area, posterior trun- 

 cation transversely striated on the sides, lateral tubercles very small 

 and indistinct; wings ample, areolet 5-angular ; abdomen smooth and 

 shining. Length 4 lines. 



One 9 specimen. Closely allied to encaustus. 



fi. Ichneumon tepanecus, n. sp. 



9. — Black, shining; color and markings very similar to those of 

 ::<(poteci(s. with the following differences : the apical middle of the cly- 

 peus has a black spot; the scutellum is whitish except at base; the 

 metathorax marked much as in encaustus, it has three small spots at 

 base, the middle the largest, and wanting in one specimen, two elongate 

 marks on the posterior truncation, narrowed above and sometimes con- 

 fluent by a narrow line, and two spots on each side, the posterior one 

 large and ovate, the elevated lines on the disk are sometimes marked 

 with whitish ; the pleura has two large spots on the side, placed ob- 

 liquely, and two smaller approximate spots behind the anterior coxjie; 

 legs luteous, the four anterior cokim and trochanters, and a large oblique 

 spot on the posterior coxae above, white ; base and apex of posterior 

 coxfe above, the femora behind — the posterior pair sometimes so only 

 at tip — extreme tip of posterior pair outwardly, and a line on all the 

 tibiae within, black; abdomen marked as in encaustus. Form and 

 sculpture much as in encaustus, but the first and second segments of ab- 

 domen are densely and finely punctured, while in encaustus the entire 

 abdomen above is perfectly smooth and polished. Length 6 lines. 



Three 9 specimens. (Sumichrast Coll. No. 55.) 



7. Ichneumon Cholula, n. sp. 



9 . — Head whitish, occiput confluent with a mark on middle of ver- 

 tex extending to base of antennae, and tips of mandibles, black ; anten- 

 n;\! black, scape in front and a broad annulus about the middle, white ; 

 prothorax black, broadly margined with white; mesothorax black, 



