AMERICAN COLEOPTERA. 35 



Fourth ventral segment dark; (PvRECTosoirA Motsch.) 2. 



Fourth ventral segment pale, at least in part 9. 



2. — Prothorax with a black stripe and two roseate spots 3. 



Prothorax with a large dusky cloud 5. 



Prothorax with a black spot, sometimes wanting 6. 



3. — Elytra with narrow^ side margin 4. 



Elytra with wide side margin ; J with sixth ventral dark piceous; 8 — 11 mm. ; 



Mass.; Pa.; Va consangnineus Lee. 



a. — Larger and broader than the type; sixth ventral of 9 dark in front, 

 yellow behind ; I3mm. ; Ga. ; Fla. 

 4. — Small and narrow, antennse wider; 9 with the usual transverse luminous 

 spot on the fifth ventral, and a much smaller round one on the sixth; rest 



of ventral surface piceous; 4—6.5 mm.; Ga. ; Fla lineelltlS Lee. 



f). — Narrower than consangnineus ; elytra with narrow side margin; antennae nar- 

 row; fifth ventral of 9 pale, with only a small lateral spot dark; sixth with- 

 out luminous spot; fi — 12.5 mm.; Mass.; L. Sup.; Kansas ardens Lee. 



6. — Antennae shorter and rather stouter than usual; prothorax channeled, very 



obtusely rounded in front 7. 



Antennae of usual length; prothorax normally rounded in front 8. 



7. — Smallei', prothoracic spot elongate, wider in front; apex and sides duskv, 

 strongly punctured; scutel dusky; % with light organs as usual, fifth 

 ventral and following segments entirely luminous; 5 liglit organs entirely 



wanting; 5 — 7 mm.; Texas dimissus n. sp.' 



Prothoracic spot transverse, apical, strongly punctured, sides punctured, scutel 

 yellow; % with light organs as usual ; 9 unknown: 7 mm.; Fla.; Tex. 



collustrans Lee. 

 8. — Prothorax densely {lunctulate, aiiical part more strongly punctured, dusky, 

 sides duskj-; 9 unknown; 10 — 11.5 mm.; 111.; Ks....pnnctulatus Lee. 

 Disc of prothorax smooth, convex, roseate, apex and sides strongly punctured; 

 elytra more strongly punctured ; fifth ventral of 9 with a transverse yel- 

 low boss occupying the middle third of the segment; 7 mm.; Fla. 



umbratus Lee. 

 9. — Large species, ventral impressions of % very distinct, (Ellipolampis Motsch.).10. 



Small species, ventral impressions of % obsolete 11. 



10. — Prothorax not channeled, disc roseate without black sjJot; % with hind 

 margin of fourth and the whole of the following ventral segments yellow ; 

 9 segments similarly colored, but the pale apical margin of the fourth is 



very narrow; 14 mm.; Texas, (Boll.) benignus n. sp, 



Prothorax with short dorsal channel, disc roseate with a large black spot; 

 % as in benignus; 9 with dusky spots at the base of the fifth segment, sixth 

 dusky, margined with testaceous; 9 — 14 mm.; Pa.; 111.; Tex...pyralis Linn, 

 u. — Prothorax with a black vitta. 

 0. — Prothorax without black spot ; Tex. 

 11. — Elytra widely margined ; 9 with long elytra and wings, similar to the % ; 



6—8 mm.; Pa.; Va.; Tex marginellus Lee. 



a. — Prothorax with a black vitta; Va. ; Tex. 



p. — Paler, disc of pi-othorax roseate, without spot ; Pa.; Ga.; ca.siw.s Lee. 

 Elytra less widely margined; 9 without wings, elytra short, dehiscent, 

 separately rounded at tip; 5.5 — 8 mni. ; Mass.; Pa.; Ks, ; (Gynaptera Lee.) 



scintillans Say. 



