THE FIREFLIES OR LIGHTNING BUGS. 



1566 (4837). PHOTINUS SCINTILLANS Say, Jouru. Phil. Acad. Nat. Sci., V, 



1825, 163; ibid. II, 275. 



Elongate, slender. Dusky brown; thorax rosaceous with a yellowish 

 margin and central black spot ; elytra with suture and side margins pale; 

 antennae dusky. Elytra finely and almost indistinctly granulate ; those of 

 female not more than one-third the length of abdomen. Length 5.5-8 mm. 



Martin County; scarce. .July 1-S. Said by Say to lie ''our 

 very abundant firefly and familiar to every inhabitant of the coun- 

 try," but this does not hold good in Indiana. 



XII. LAMPROHIZA Mots. 1853. (Gr., "to glow + a root.") 



Antenna 1 simple with quadrate joints, the eleventh with a small 

 jointed needle-shaped appendage near the tip. The females have 

 short elytra and the males transparent spots on the thorax. One 

 species has been taken in the State, while another may occur. 



1567 (4843). LAMPROHIZA INACCK.N.SA Lee., Proc. Amer. Phil. Sue., XVII, 



1878, 611. 



Elongate, gray, slightly pubescent. Thorax wider than long, seniicir- 

 cularly rounded at tip and sides, the latter strongly incurved at base, hind 

 angles dentiform ; disk dark, convex, smooth, sides very widely flattened, 

 scabrous, pale gray; near the apex (in male) are two large colorless, trans- 

 parent spots. Elytra reticulate-punctate, with the longitudinal raised lines 

 very faint, sides rather strongly margined. Beneath densely punctured, 

 gray ; abdomen piceous, wholly without phosphorescent spots ; antennse and 

 legs gray. Length 6.3 mm. 



A spe.-les of the Alleghanian fauna described from Marqu?tt.'. 

 Michigan. One specimen in the Dury collection is from near Mich- 

 igan City, Laporte County. Probably occurs sparingly in the 

 northern third of the State. 



L. splendidula Linn., fifth and sixth ventral segments yellow, 

 thorax wider than long, length 8.5 mm., is a European species re- 

 corded from Maryland and Illinois. 



XIII. PHOTURIS Lee, 185 1 . (Gr., " light + tail. ") 



Eyes large, convex and widely separated ; head rounded, nar- 

 rowed behind, not retractile and not entirely covered by the hood- 

 like thorax; antennas longer than one-half the body, 

 filiform, slender, not compressed, the second and third 

 joints about equal and, together, as long as each of the 

 following joints. Th<- lighi organs in both sexes oc- 

 cupy the whole of the firth and following segments. 



1568 (4847). PHOTFRIS PENXSYIA AMCA DeCi., Mem. Hist. 



, T TV 1 ^., v -., fig. 319. x H. 



des Ins., IV, 1768, 52. (After Knobel.) 



Elongate, slender, subdepressed. Head and thorax dull 



