32 Journal New York Entomological Society. [Voi. xxv. 



bringing together of the male and female, is more brilUant in one than 

 in the other sex and is readily controlled. 



5. The adult female of Photuris is carnivorous and very voracious 

 and even cannibalistic. The other genera seem to be herbivorous as 

 adults. 



6. Ova were obtained from all but Pyractomena. They are sub- 

 spherical and at first sticky and less than i mm. long. They are de- 

 posited a short distance in soil, moss, etc. That of Photuris has a 

 yellowish tinge, the remaining five are dull whitish. All are for a 

 time at least faintly luminous. 



7. The larvse of Photinus, Ellychnia and Lucidota are elongate and 

 somewhat depressed and more or less pinkish ventrally — those of 

 Pyractomena and Photuris are wider, flattened fusiform, and the latter 

 is nowhere pink; The larvae of Photinus and Lucidota are very 

 largely subterranean, but Pyractomena is probably in part arboreal 

 while the largely terrestrial Photuris frequently ascends weeds. 



8. The larvae are probably all carnivorous and Photuris devours 

 earthworms with avidity. 



9. The larvae are all 'luminous — two points on the eighth abdom- 

 inal sternite furnish the rather slowly controlled luminescence. 



10. The larval life, perhaps with the exception of Ellychnia cor- 

 rusca, extends in most cases over the greater part of two years. 



11. Ellychnia corrnsca hibernates as an adult beneath moss, logs, 

 etc., the rest hibernate as larvae. 



12. The pupae are luminous. The pupa of Pyractomena is pig- 

 mented and suspended like that of a Coccinellid, the others are pallid 

 and formed beneath the ground. This stage is brief. 



Bibliography. 



1900. Annandale, N. VI. Insect Luminosity — An Aquatic Lampyrid Larva. 

 Proc. Zool. Soc. London, pp. 862-863. 



1904. Annandale, N. The Occurrence of an Aquatic Glow-worm in India. 



Proc. Asiatic Soc. Bengal, No. X, pp. 82-83. 



1905. Barber, H. S. Note on Phengodes in the Vicinity of Washington, D. 



C. Proc. Ent. Sec. Wash., VII, pp. 196-197. 

 1914. Barber, H. S. On Interspecific Mating in Phengodes and Inbreeding 



in Eros. Proc. Ent. Soc. Wash., XVI, pp. 32-34. 

 1868. Bethune, C. J. S. Luminous Larvae. Can. Ent., I, pp. 38-39. 

 1904. BoNGARDT, J. Zur Biologie unserer Leuchtkafer. Nat. Wochenschr., 



Bd. 19, pp. 305-310, 4 figs. 



