152 PHOSPHORIC INSECTS. 



speaks of as being luminous at the abdomen, is 

 no other than Lampyris italica, of which I have 

 spoken above. 



One of the Longicorn beetles, named by Che- 

 vrolat Dadoyclius flavocinctus } has the third and 

 fourth segments of the abdomen of the same yel- 

 low colour and appearance as the luminous seg- 

 ments of the Lampyridte, and we know that a 

 considerable number of the Brazilian Helopidae 

 present a similar peculiarity, whence some ento- 

 mologists are inclined to infer that these insects 

 are also luminous. 



In the family of Hemiptera we have the genus 

 Fulgora, which includes several species said to be 

 highly phosphorescent. Their light is so brilliant 

 that the authors who speak of it have called these 

 insects Lantern-flies. 



Fulgora laternaria and .F. candelaria (fig. 28) 

 are the two species best known. These, like all 

 the insects of this genus, have a very singular ap- 



