NATURAL SCIENCES OF PHILADELPHIA. 139 



linear, being very sliglitl}' broader at tip, stigmatic tubercles 

 proniinont and placed a little behind the middle; ovipositor more 

 than half the length of abdomen. Length G^ lines. 



%. Antennae long, filiform, attenuated to tips, black, with a 

 yellowish annulus beyond middle, scape dull iioney -yellow ; ver- 

 tex and occiput black; abdomen very slender, subcompressed 

 towards apex ; otlierwise as in 9 , Length 6^ lines. 



Cordova. (Sumichrast, No. 58.) The 9 is closel}^ allied to that 

 of rubi-iceps, Walsh, but distinct by the very different sculpture 

 of the metathorax. The males of the two species are very dis- 

 tinct. 



2." Joppidium ardens, n. sp. 



9. Ferruginous; metathorax, four posterior coxte, posterior 

 trochanters, base of tlieir femora, basal segment of abdomen, base 

 of second segment, and sheaths of ovipositor, black ; sometimes 

 the metathorax is varied with ferruginous; antennas colored as in 

 dubiosum except that the 3'ellow is confined to an annulus about 

 the middle ; intermediate tibioe, and posterior tarsi except tips, 

 yellow ; tips of all the tarsi dusky. Same form as dubiosum, com- 

 pared with which the mesothorax has the dorsal lines more deeply 

 impressed, and the intervening shallow depressions are wanting, 

 while the transverse stria? on metatliorax ai'e confused on the disk 

 and the sides are finely striated, areolet of anterior wing larger, 

 the abdomen rather more slender, the first segment with a shallow 

 depression above between stigmatic tubercles ; ovipositor longer. 

 Length 6|^-7 lines. 



Z. Antennoe black, with a narrow yellowish annulus bej-ond 

 middle, scape ferruginous ; metathorax smooth and shining, the 

 apex above having a few irregular transverse stria? ; posterior 

 legs black, basal joint of their tarsi white, apex fuscous or black; 

 abdomen sometimes entirely black, generally the second and fol- 

 lowing segments have a dull ferruginous median or basal band. 

 Length G^-7 lines. 



Cordova; Isthmus of Tehauntepec. (Sumichrast, No. 34 9, 

 56 %.) 



3. Joppidium donabilis, n. sp. 



% 9 . Uniformly ferruginous ; face of % pale ; antennoe black, 

 with a broad, very distinct white annulus ; metathorax trans- 

 versely striated, with two transverse arcuate carina?, flanks of % 



