THE FIREFLIES OR LIGHTXIXG Bl'GS. 819 



A ■well-marked variety of corrusca taken by "Wolcott near 

 Clarke, Lake County, and by myself in Stenben County; scarce. 

 May 25— June 12. 



1555 (4815b). Ellychxia lacvsteis Lee, Proc. Phil. Acad. Xat. Sci., V, 



1S51, 3.34. 

 Elongate-oblong, narrow, parallel. Dull sooty-black. Thorax semi- 

 elliptical, its edges only indistinctly paler and sparsely punctate. Elytra 

 finely granulate, with one costa only fairly distinct, the others obsolete. 

 Length 5 nun . 



Lake County ; rare. July 2. Smaller and much narrower than 

 autumnalis and probably a distinct specie^;. Though classed as a 

 variety of corrusca by LeConte in his Synopsis. A northern form 

 described from the Lake Superior region. 



IX. Pyropyga :\[uts. ls.33. (Gr.. "fire- rump.") 



Rather narrow forms, having the antennse moderately ^vide and 

 compressed, with second joint transverse, one-third a.s long as third, 

 the latter in our species longer than fourth ; last dorsal segment in 

 both sexes broadly truncate with rounded aDgles ; segments lobed at 

 the sides, wirh the angles but feebly produced backwards; light 

 organs but slightly developed. 



KEY TO I^'DIA^"A SPECIFS OF PYBOPYGA. 



a. Thorax with black disk and narrow piceous or dusky edges. 



&. Elytra costate ; length 6.5-S mm. 1556. fkxestralis. 



66. Elytra not costate; length 4.5-<3 mm. 1557. xigbicaxs. 



aa. Thorax with black disk and reddish-yellow sides. 155S. DEciprE^s. 



1556 (^4817). Ptbopyga FENEsrEALis Jlelsh.. Proc. Phil. Acad. Xat. Sci.. II, 



1S45. 304. 

 Elongate-oval, slender. Black or blackish-bro^vu ; thorax with a large 

 reddish-yellow subtriangular space on each side of the black central disk. 

 Elytra finely granulate and with two or three rather indistinct eostte. Length 

 P..5-S mm. 



Laporte. Steuben. ]\larsha11 and Vigo counties ; frequent. June 

 l!l-August IT. Taken by swi'e]ung gra'^s and low herbage. usuaUj' 

 in moist meadows. 



1557 i4SlSi. Pyeopyga xigeica.xs Say. Journ. Phil. Acad. Xat. Sci., Ill, 



I'^i?. 179 ; ibid. II. 116. 

 Resembles the preceding in form and in color of thorax. Diffei's mainly 

 in its smaller size and lack of raised lines on elytra. Length 4.5-6 mm. 



Steuben. Starke and IMar-hall counties; frequent about tam- 

 arack marshes. June 17-Juiv 15. 



