AMERICAN ENTOMOLOGY. 89 



the circumstance that the ultimate joints of the antenna;, only, 

 form a serrated mass, and that the tarsi have but four very obvi- 

 ous joints. Dejean mentions but two species as inhabitants of 

 Europe ; we have here given four species, but it would seem that 

 the genus might be divided with advantage to the student, for 

 whose convenience also it ought perhaps to be removed to the 

 Tetramera, together with several kindred genera. 



Enoplium ONUSTUM. — Sjyccijic character. Black ; thorax red, 

 with two black lines; elytra margined with yellowish. 



£. margmatxim nobis, Journ. Acad. Nat. Sciences, iii. p. 187. 



Dcsc. Body black, hairy, punctured : labrum and basal joints 

 of the palpi, pale : thorax red, with two dilated longitudinal black 

 lines confluent behind : elytra with a yellowish margin, suture and 

 base : thighs pale. 



Ohs. This insect frequently occurs in Pennsylvania : I have 

 also obtained it in the State of Ohio, and Mr. John P. Brace, of 

 Connecticut, presented me with an individual taken in that State. 

 It resembles the E. pilosiim Forst., but is readily distinguished 

 by the yellowish margin of the elytra. 



I have been informed by Count Dejean, that the specific name 

 marginatum,!^ preoccupied in this genus, I therefore substitute the 

 present appellation. 



The upper left figure of the plate. 



[This is a variety of E. pilosum. — Lec] 



Enoplium pilosum. — Specific character. Black; thorax red, 

 with two black lines. 



Lampyris pilosa Forst. Nov. Ins. p. 49. 



Dene. Body shining black, covered with very short hairs, 

 punctured : labrum dull testaceous : thorax bright sanguineous, 

 with two broad longitudinal black vittae approaching each other 

 to the posterior margin, where they are confluent ; anterior mar- 

 gin yellowish, interrupted by the black vittae; elytra entirely 

 black, opake, immaculate; wings black. 



Ohs. The very great similarity between the preceding and the 

 present species, would almost persuade us that they are merely 

 varieties of one species ; nevertheless, as they seem to be constant, 

 in their respective characters, we consider them as distinct, 

 though closely allied species. 



The lower right figure of the plate. 



