382 [Decem^pdr, 



rt Caput exscrtum ; thorax aatice truncatus. 



Phengodes Hoffg. 



Antennne 1 1-articulat<x>, longe biramosrc, articulis 2 et 3 minutis ; abdomen 

 segmentulo analt aucto (an nota sexualis ?), tarsi articulo 41" simplici. 



1. P. p I n m o s a Hoffmansegg Illig- Mag. 6, 3tl. Laporte, Ann. Ent. 

 Soc. Fr. 2, 128. Lampyris plumosa Oliv. 28, tab. 3, 27 ; Fabr. Syst. El. 

 2, 105. PheniTodes tentaceus Leach, Zool. Journal, 1, 45. 



Middle, Southern and Western States ; very rare. Say observes ("Bost. 

 Journ. 1, 157) that it is abundant for a short period in the autumn, flying into 

 rooms at night. The coolness with which Mr. Leach places Olivier's name 

 as a synonym to that suggested by him is remarkable, and might be well 

 worthy of a harsher comment. 



/3 Caput tlioraco obtectum ; anteunas articulo 3'" sequentibus a^quali. 



PoLYCLASis Newman. 



Antennre 11-articulatrr, breviter bipectinatae ; palpi maxillares articulo ultimo 

 securiformi ; tarsi articulo 4'" vix lobato, ungues integri, 



I. P. b i f a r i a . Lampyris bifuria Say. Bost. Journ. 1, 157. Pollaclasis 

 ovula Newman. Ent- Mag. 5, 382. 



Southern States, Haldeman ; very rare. I have corrected Newman's vicious 

 spelling of the generic name. This species must give but little light, only the 

 last joint of the abdomen is pale colored in my specimen. 



LucEKNUTA Lap. 

 Lychnuris iDej. 



Antennae 11-articuIatac, dilatatae, compress; palpi maxillares articulo ultimo 

 magno securiformi ; tarsi articulo 4*" longe lobato, ungues simplices; abdomen 

 apice phosphoreum, articulo ultimo superiore apice emarginato. 



The males are distinguished by the longer and broader antennae, and the 

 larger size of the last superior abdominal segment, which extends beyond the 

 inferior one in every direction; they have also a small additional anal segment 

 beneath. 



1. L. a t r a . Lampyris atra Fabr. Ent. Syst. 2, 101 ; Oliv. 28, tab. 3, 

 28 ; Lampyris laticornis Fabr. Syst. El. 2, 100 ; Photinus (Lucernuia\ laticornis 

 Laporte. An. Ent. Fr. 2, 144, Lych. morio Mels. Pr. Ac. Nat. Sc 2, 303. 



Abundant everywhere. I have restored Fabncius' older name, as I see no 

 reason mentioned for changing it ; I have a variety from Georgia with the 

 whole of the posterior part of the thorax blackish. 



2. L. tarda, atra, nigro-pubescens thorace apice subangulato, scabro 

 lateribus subito late reflexis, fusco-testaceis, basi late emarginato, disco late 

 canaliculato, ante basin utrinque transversim elevato, elytris confertim minus 

 subtiliter granulatis. Long. -33. 



