222 EDWARD NORTON. 



white ; two brown or black vittae oa side lobes of mesothorax ; seven 

 blackish dots on each side of tergum ; legs pale testaceous ; apex of 

 hinder tibine and their tarsi blackish ; wings hyaline, stigma and costa 

 black. 



S . — Dots on each side of tergum in male indistinct : the two api- 

 cal segments of abdomen blackish ; under wings with two middle cells. 



Cuantla, tierra Caliente. (H. de. Saussure.) 2 9 , 8 S . 



17. Strongylogaster nigritorius, n. sp. 



Testaceous ; head and thorax mostly black ; dots on the abdomen and apex 

 blackish; wings hyaline. Length 0.26 — .32. Br. wings 0.54 — .68 inch. 



S 9. — Testaceous; abdomen stout, compressed, not widened beyond 

 middle; antennae moderate, basal joint sometimes tipped with white; 

 head black, nasus and mouth below whitish ; thorax black; tegulas, 

 edge of collar, scutel, a spot on pleura (size variable, sometimes most 

 of pleura,) testaceous ; dots at each side of each segment of tergum 

 and two apical segments black ; legs testaceous, hinder tibiae and the 

 tarsi more or less blackish ; wings hyaline, stigma and costa piceous. 



Var. — Thorax sometimes testaceous, with two vittfe. 



Cuantla, t. c. Mexico. (H. de. Saussure.) 1 9 , 9 S . 



This is probably a variety of S. merito7-ius, from which it differs in 

 the black basal joint of antennae, in the thorax being mostly black. 



18. Strongylogaster illuminatus, n. sp. 



Black, with base of antennse, mouth, tegulae, collar, V-spot, scutel and spot 

 on pleura white; abdomen testaceous with paler bands. Length 0.28 — .32. Br. 

 wings 0.64 — .66 inch. 



S 9. — Three colors; body of 9 "ot stout, of S slender ; antenna? 

 moderate, basal joint white ; head black; nasus and mouth beneath 

 white, thorax black ; tegulcC, prothorax, large V-spot, scutel, basal 

 plates and a large irregular spot on pleura white; abdomen testaceous, 

 with a brownish band across each segment of tergum ; legs testaceous; 

 femora darker at base; apical tarsi obscure; wings hyaline, faintly 

 smoky, nervures piceous, stigma pale testaceous. 



Cordova, t. c. Mexico. (H. de. Saussure.) 1^,19. 



19. Strongylogaster fulviventris, n. sp. 



Black ; luduth, tegulse, collar, middle of tergum in 9 j ^'id part of venter or- 

 ange-yellow. Length 0.24 — .32. Br. wings 0.50 — .64 inch. 



9 . — Black; body stout, aj)ex: of abdomen not acute; antenna? slen- 

 der, longer than thorax; third joint longer than fourth; head wider, 

 nasus and mouth, below tegulae, a wide mark on collar, coxae and tro- 

 chanters straw-yellow ; a stripe down the middle of tergum, and all the 

 venter except apex, orange-red, femora the same color, paler before ; 



