1851.1 337 



alutaceis, costulatis, anguste marginatis, margine siituraque tenuissime pallidis. 

 Long. -4 "SS. 



Lampyris borealis Randall. Bost. Journ. Nat. Hist. 2, 16. 



Lake Superior, Cleveland and Maine. The fennale is luminous only at the 

 sides of the segnnents. The margin of the elytra of the male is much narrower, 

 Bnd the sides are less suddenly deflexed; the male is P. falsa of my catalogue 

 in Agassiz' Lake Superior. 



Phausis. 



Antennae 12-articulataG breves, serratap, compressae; articulis 1 et 2 parvis, 

 ultimo subulato minutissimo, vix conspicuo ; palpi minuti ; tarsi articulo 4'" 

 brevi bilobato, unguiculari longo, ungues simplices ; abdomen articulis tribus 

 phosphoreis, segmento ultimo superiore emarginato. 



1. r. reticulata. Lanipyris reticulata Say. J. Ac. Nat. Sc. 5, 163. 

 L. hrevicornis VDe']. Cat. Georgia, rare. 



Photuris IDej. 



Antennae 1 1-articulatae, tennes, elongatae, articulis 2 et 3 brevioribus; palpi 

 maxillares articulo ultimo triangulari acuto, labiales articulo ultimo transverse 

 lunato: tarsi articulo 4'" longe lobato, ungues externi fissi, interni simplices; 

 abdomen articulis 3 ultimis phosphoreis, segmento superiore ultimo apice 

 rotundatis. 



This very distinct genus forms the 3d division of Laporte's genus Photinus, 

 (An. Ent. Fr. 2, 144,) and to it he has given the uncouth name of Tclcphoroides; 

 fortunately his Gallic patriotism has led him to print this as a French word, so 

 that we are enabled to replace it by the hitherto unpublished name of Dejean. 

 While on this subject I may add, that Laporte in this, as in almost every other 

 instance, has completely overlooked the real distinguishing characters of the 

 genus. 



1. P. pensylvanica. Lampyris pensyhanica De Geer 4, 53, tab. 

 17j 8 , Oliv. 25, 1, 8. Enc. Meth. 7, 455 ; Lanij). versicolor Fabr. Syst. El. 2, 

 105 ; Phuiinus pensylvanicus Laporte. An. Ent. Soc. Fr. 2, 144. 



Abundant in every part of the United States; usually the elytra are marked 

 with a discoidal pale vitta extending beyond the middle. In Southern specimens 

 this vitta is occasionally wanting ; these are Photuris lineaticollis of Dejean's 

 Catalogue. 



2. P. frontalis, picea, fronte valde concava, thorace pallido sat dense 

 punctato marginibus late reflexis, vitta media fusca apicem nonattingente notato, 

 elytris confertim minus subtiliter punctatis, margine, suturascutelloque pallidis, 

 femoribus basi pallidis. Long. -4. 



One specimen ; Georgia. The punctuation is coarser and less dense than in 

 P. pensylvanica. 



3. P. d i V i s a , picea, fronte leviter concava, thorace pallido, sat dense 

 punctato, marginibus late subito refiiexis, disco utrinque macula magna fusca 



