334 [December 



Georgia ; rare. This small species is readily distinguished by its narrower 

 form ; the disc of the thorax is much more even, than in the preceding species. 



** Corpus ellipticum. 



4. E. corrusca. Lampyris corrusca Linn. Syst. Nat. ; Oliv, 28, tab. 

 2, 14; Fabr. Syst. El. 2, 100. Pyratomena fenestralis Mels. Pr. Ac. Nat. Sc. 

 2, 304. Middle and Southern State." 



5. E. a u t u m n a 1 i s Mels. Pr. Acad. Nat. Sc. 2, 303. Middle States. 



6. E. lacujtris, elongato-elliptica, fusco-nigra, thorace semicircular!, 

 disco convexo, lateribus parce punctatis, depressis, linea utrinque arcuata pallida 

 ornatis, elytris confertissime subtiliter granulatis linea elevata subobliqua 

 notatis. Long. '3. 



Lake Superior; narrower than E. autumnalis, and with the sides of the 

 thorax less punctured. It is much smaller and a little narrower than E. cor- 

 rusca, and the pale arched spot of the thorax is much narrower. 



Photinus Lap. emend. 



Antennae compressse, tenues, 1 l-articulatoe ; palpi maxillares articulo ultimo 

 triangulari, tarsi articulo 4to longe lobato, ungues simplices, abdomen articulis 

 tribus phosphoreis, ultimo superiore apice trimcato, inferiore emarginato seg- 

 mentulo anali aucto. 



The anal segment here exists in both sexes, but from the drying of the abdomen 

 the 7th segment is sometimes retracted. The males have the superior terminal 

 segment extending beyond the inferior segment, as in the other genera. 



1. P. p y r a 1 i s , pieeo-vel nigro-fusca, thorace semicirculari, basi trun- 

 cato, utrinque roseo-maculato, macula centrali nigra ornato, canaliculato, 

 marginibus late punctatis, lateribus subito reflexis, elytris confertissime granu- 

 latis, margine, sutura scutelloque pallidis coxis femoribusque flavis. Long. 

 38 60. 



Lap. An. Ent. Pr. 2, 141. 



Lampyris pyr alls h'm. Syst. Nat : De Geer 4,52: tab. 17,7; Fabr. Syst. 

 Ent. 2, 99; Syst. El. 2, 101. Oliv. 28, 2, 11. 



Lampyris centrata Say. J. Ac. Nat. Sc. 5, 1G2. Lamp, rosata Germ. Ins. 

 Nov- 62. 



Rare in the Middle States, but very common in the Southern States ; the 

 thoracic spot is sometimes very small ; the female only differs from the male 

 by the abdomen. 



2. P. a r d e n s , fusca vel picea thorace semicirculari, basi trnncato, 

 angulis posticis acutis, sub-productis, margine laterali apicalique pallidis, 

 punctatis, lateribus subito reflexis, disco subtiliter canaliculato, ante basin late 

 impresso, elytris minus subtiliter granulatis, margine, suturaque pallidis. Long. 

 3 -45. 



Lake Superior; the feet are pale fuscous, with the base of the femora yel- 

 low ; the thorax is sometimes carinated at base; such a variety is the Pygolampis 

 taedifer of my Catalogue in Agassiz' Lake Superior. 



