NATURAL SCIENCES OF PHILADELPHIA. 381 



occiput, antennffi except scape beneath, three broad stripes on 

 mesothorax, oblique stripe on pleura, basal margin of metathorax, 

 and a stripe down the median sulcus not quite reaching the apex, 

 spot on outer side of posterior coxfe, basal trochanter, base of 

 their femora dilated within, base and apex of their tibiae and their 

 tarsi, spot on tip of first abdominal segment, and dorsal edge of 

 remaining segments, broad on second and gradually narrower to 

 apex, all black; mesothorax strongly and sparsely punctured; 

 metathorax sparsely punctured, median sulcus deep and smooth ; 

 wings hyaline, nervures and stigma black, apical trochanter of 

 posterior legs white, their femora ferruginous, white at extreme 

 apex, tooth small and acute, their tibiae with a broadish 3'ellow 

 annulus ; abdomen honey-yellow, basal half of first segment pale 

 yellow. Length 9^-10 lines. 



Cordova. (Sumichrast, Nos. 6*7, 10, 149.) This is larger than 

 vitticollis, which it resembles by the wings being clear at tips; the 

 body is more robust and the posterior femora ditferently colored. 



2. Eiphosoma vitticollis. 



Eiphosoma vitticollis, Cress., Proc. Eat. Soc. Phil., iv. p. 53. 



Orizaba; Cordova. (Sumichrast, Nos. 43, 114.) 



3. Eiphosoma azteca, n. sp. 



9 Lemon-yellow; extreme tips of mandibles, large spot on 

 vertex covering ocelli and occiput, antennae except scape beneath, 

 three stripes on mesothorax, oblique line on pleura, sometimes 

 slightly interrupted, basal suture of metathorax, stripe down the 

 median sulcus, a spot on the flanks, and sometimes the tip of scutel- 

 lum, black; sometimes the lateral stripes on mesothorax are fer- 

 ruginous shading into black or brown anteriorly; mesothorax with 

 large sparse punctures ; sulcus of metathorax broad and rather 

 deep; wings hyaline, iridescent, tipped with pale fuliginous; four 

 anterior legs lemon-yellow, their femora and posterior coxae more 

 or less honey-yellow; posterior femora ferruginous, base of their 

 trochanters, tlieir tibiae, except an ill-defined yellowish annulus on 

 middle, and their tarsi black ; apex of trochanters j'ellow, some- 

 times their coxae within and base and apex of femora within are 

 black ; femoral tooth short ; abdomen hone\^-vellow or pale fer- 

 ruginous, dorsal edge of second and remaining segments black, 

 broad on second and gradually narrower on the others, basal half 

 of first segment 3'ellowish ; ovipositor about half the length of 

 body, sheaths black. Length 7^-9^ lines. 



