524 CLASS viii. 



Sp. Lampyris splendidula L., PANZER Deutschl. Ins. Heft 4, Tab. 8, m. and 

 fern., SCH.EFFER, Elcm. Entom. Tab. 74 (male), DUMERIL, Cons. gn. s. I. Ins. 

 PI. 9, figs, i, 2 (de glimworm, Johanniswurm, le ver luisant, the glow-worm). 

 This species, and some others (Lampyris noctiluca L., Lamp, hemiptera, 

 Lamp, italica, &c.), diffuse a phosphoric light by night ; the males shine 

 less than the females, and with them the light ceases after the pairing ; the 

 females, on the other hand, are very luminous when laying eggs. G. R. 

 TREVIRANUS was of opinion that the light proceeded from the internal 

 genital organs; this subject is fully treated by him Biologic, v. s. 105 

 1 1 6, Verm. Schriften, I. s. 87 93. The light becomes dull in carbonic 

 acid and hydrogen gases, and stronger in oxygen gas; see on these and 

 other particulars a letter of MATTEUCCI to DUMAS in the Comptes rendus, 

 14 Aug. 1843. 



On the different species of this genus comp. Essai d'une revision du genre 

 Lampyre par DE LA PORTE Ann. de la Soc. entomol. n. 1833, pp. 122, 

 123. 



PJiengodes HOFFMANNS. Antennae with eleven joints, bipectinate, 

 with cirri convoluted spirally. Elytra posteriorly narrowed. 



Species American, as Lampyris plumosa FABR. &c. 



Amydetes HOFFMANNS. 

 Omalisus GEOFFR. 

 Dictyoptera LATR. 



Lycus FABR., OLIV. Head small, concealed under the shield of 

 thorax, with mouth porrect, rostrate. Palps with last joint thicker. 

 Antennae approximate, filiform or serrate. Elytra in many dilated, 

 broader than abdomen. 



Comp. on this genus FABRICII Syst. Eleuih. n. pp. no it 8, and 

 DALMAN in SCHOENH. Synon. Ins. i. 3, Append, pp. 25 33, Tab. 5. 



Cyphon FABR., (Elodes LATR., Scirtes ILLIG., LATR.). Mandi- 

 bles entire, with apex simple, small, scarcely exsert beyond 

 labrum. Palps filiform, labial furcate at the apex, with last joint 

 inserted before the apex of penultimate. Antennae distant, longer 

 than thorax. Elytra rather soft. Posterior feet in many saltatory, 

 with femora incrassated. 



Sp. Cyphon hemisphcericus FABR., PANZEB Deutschl. Ins. Heft 96, Tab. 7, &c. 

 Add genera Eubria ZIEGL., Nycteus LATR. 

 Dascillus LATR. 

 Ptilodactyla ILLIG. 



Sub-genus : Colobodera KLUG. 



