THE FIREFLIES OK IJCIITNINC BUGS. 819 



A well-marked variety of rorrusca taken by Wolcott near 

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

 :\Iay 25-June 12. 



1555 (4S15b). Ellyciinia lacvstris Lee. Proc. IMiil. Acad. Nat. Sci., V, 



1S51, 334. 



Elougate-obloug, uari-ow, 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. 

 F-ength 5 mm. 



Lake County; rare. .Tul\' 2. Smaller and much narrower than 

 autuiniialis and probably a disiinet species, thdugih classed as a 

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

 described from the Lake Superior region. 



IX. Pyropyga i\rots. 1858. (Clr.. "tire i rump.") 



Rather n.-trrow forms, havinti' the antenna^ mod(M'ately wide and 

 compressed, with second joint transverse, one-third as Ions: as third, 

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

 both sexes broadly truncate with rounded angles; segments lobed at 

 the sides, with the angles but fei^lily produced backwards; light 

 organs but slightly developed. 



KEY TO I>'DIANA SPECIES OF PVROPYGA. 



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



b. Elytra costate ; length 6.5-S mm. 1556. fenestkalis. 



bb. Elytra not costate; length 4.5-G mm. 1557. nigricans. 



fia. Thorax with black disk and reddish-yellow sides. 155S. decipiens. 



1556 (4817). Pyropyga fenestralis Melsh.. Proc. Phil. Acad. Nat. Sci., II, 



1845, 304. 



Elongate-oval, slender. Black or blackish-brown ; 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 costiB. Length 

 6.5-8 mm. 



Laporte, Steuben, Marsluill and Vigo counties; frequent. June 

 ID-August IT. Taken by sweeping grass and low herbage, usually 

 in moist meadows. 



1557 (481S). Pyropyga nigricaas Say. .Tourn. Phil. Acad. Nat. Sci., Ill, 



1823, 179; ibid. IT. 116. 



Resembles the preceding in form and in .-olor of thorax. Differs mainly 

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



Steuben, Starke and ^hirshall counties; frequent about tam- 

 arack marshes, .liuie 17-.Tniy 15. 



