AMERICAN ENTOMOLOGY. 85 



latter species, he expressly states, that in its elongated and cylin- 

 drical appearance it differed from Tenebrio, and that it ought 

 perhaps to form a distinct genus. Latreille finally established a 

 genus under the name we have adopted, in his " Histoire Natu- 

 relle des Crustaces et Insectes," for the reception of the bicolor. 

 In his " Genera Crustaceorum et Insectorum," he described an- 

 other under the name of L. Mozardi; and in the pages of the 

 " Journal of the Academy of Natural Sciences of Philadelphia," 

 I increased the number to six, by the publication of two new 

 species. 



Laxguria bicolor. — Specific character. Black, slender: 

 thorax rufous, with a dilated black vitta. 



Trogosita bicolor Fabr. Syst. Eleut. part 1, p. 152. 



Laguria bicolor Latr. Hist. Nat. Crust, et Ins. 12, p. 35. 

 Grenera Crust, et Ins. 3, p. 65. pi. 11, fig. 11. Lam. An. sans 

 Vert. 4, p. 289. 



Desc. Body piceous-black, slender : head dark piceous, with 

 very obvious punctures : thorax pale yellowish-rufous, with ob- 

 vious, rather distant punctures, and a dilated vitta of a dark 

 piceous color, occupying about one-third of the surface : elytra 

 black, with strongly impressed striae of punctures : pectus pale 

 yellowish rufous : postpectus black : feet blackish-piceous : venter 

 piceous. 



Obs. It may be distinguished from the puncticollis, to which 

 it is perhaps most closely allied, aside from its colors and more 

 elongated form, by the obvious punctures of the head and thorax, 

 as well as by the more deeply impressed punctures of the striae 

 and the approximation of the striae to each other. 



The lowest figure of the plate. 



[Latreille was the first to apply the name of Fabricius to this 

 species with which his description by no means agrees : other 

 authors have copied his error. I have named it L. Latrcillei ; 

 vide Proc. Acad. Nat. Sci. Phil. 7, 160.— Leg.] 



Languria Mozardi. — Specific character. Rufous ; antennge, 

 elytra, and feet black. 



Languria Mozardi Latr. Genera Crust, et Ins. 3, p. 66. 

 Lamarck An. sans Vert. 4, p. 290. 



Desc. Body pale rufous, glabrous : antennae dark piceous : 

 thorax immaculate : elytra punctured ; the punctures placed in 



