NATURAL SCIENCES OF PHILADELPHIA. 395 



Genus EPIMECIS, Brulld. 



Epimecisi thoracicus, n. sp. 



?. Head, antennae, and abdomen, black; palpi, thorax, and 

 four anterior femora and tibiae, pale honey-yellow; extreme tips 

 of metathorax, tips of anterior tarsi, four posterior tarsi, posterior 

 trochanters, base of their femora, a band near the tips, interrupted 

 above, and their tibiae except middle exteriorly, black, remainder 

 of the legs white ; wings h3'aline, subiridescent, nervures and 

 stigma black ; venter wliite ; ovipositor honey-yellow, sheaths 

 black. Form long, slender, cylindrical, surface smooth and shin- 

 ing, subpubescent ; antennae as long as abdomen, setaceous ; 

 mesothorax strongly trilobed, narrowed anteriorly into a neck ; 

 metathorax smooth and polished, a deep channel on basal middle ; 

 wings narrow, areolet wanting; legs long and slender, claws sim- 

 ple, pulvilli very large ; abdomen long, sessile, depressed, sides 

 parallel, segments longer than wide, subquadrate, with a blister- 

 like elevation on each side, and a depression on basal middle ; 

 ovipositor half as long as abdomen. Length 5 lines. 



Orizaba. 



Genus THERONIA, Holmgren. 



1. Theronia montezuma, n. sp. 



% 9. Lemon-yellow, shining; tips of mandibles, antennae, ex- 

 cept base beneath, posterior tarsi, and sheaths of ovipositor black, 

 ovipositor chestnut-red ; vertex, occiput, and three narrow longi- 

 tudinal lines on mesothorax pale brownish, sometimes indistinctly 

 so; wings yellowish-hyaline, dusky at apical margin, a fuliginous 

 spot at tip of marginal cell, nervures black; antennae filiform, more 

 than one-half the length of the body, the joints short ; mesothorax 

 slightly trilobed, the middle lobe grooved down the middle; scu- 

 tellum with erect pubescence, the lateral basal margins acutely 

 carinate ; metathorax rounded, with a strongly-developed, acute, 

 arcuated carina across the middle, less strongly developed in tiie 

 % ; wings ample, areolet subquadrangular, oblique ; legs robust, 

 posterior coxje compressed ; abdomen subsessile, narrow, more or 

 less clavate, smooth and shining; first segment narrow, longer 

 than the second (which is almost equilateral), with two longitu- 

 dinal elevated lines, divergent at base, and confluent at tip ; second 



