OF NORTH AMERICA. 



25 



The following is a tabulation of the species found in the United 

 States. The genus also extends to Mexico, New Granada and Chili. 



a. Forewings black. 



* Abdomen unicolorous. 



Costa black - - - . 

 Costa white . - _ 



* Abdomen bicolorous. 



Terminal 5 segments red - 

 Terminal 2 segments red 



b. Fore wings brown. 



Patagia black - - - - 

 Patagia red - - - - 



c. Fore wings veined. 



Veins white . . - - 

 Veins yellow . . . 



Of these species one (C. Virginica) is found only in the Atlantic 

 States; one (C. Cressonana) is from the Rocky Mountains of Colorado 

 Territory; one (C. Venosa) is found in Texas and Mexico, while the 

 other five are from California, from which it would appear that the 

 Pacific Coast may be considered the natural habitat of the genus. The 

 species from the latter locality differ slightly from those of the more 

 eastern States, the anterior wings among other things being somewhat 

 narrower, but the differences are of such a character as scarcely to 

 warrant their separation into another genus. 



1.-CTENUCHA VIRGINICA, (Plate 1, Fig. 15. ? • ) 



Sphinx? Virginica, Charpentier, Edit. Esp. Exot. Schm. Sphing. 



Exot. Plate 2, fig. 3 3,4 ?• (1830.) 

 Cienucha Lalreillana, Kirby, Faun. Bor. Am. iv, p. 305, i. (428.) 



(1837.) 

 Glaucopis Latrtillana, Harris, Cat. N. Am. Sphing. 39, 5. (1839.) 

 Cienucha Latreillana, Walker, C. B. M. Het. p. 282, 

 Glaucopis Lalreillana, Morris, Syn. Lep. N. Am. p. 136. (1862.) 

 Cienucha Lalreillana, Clem. App. Syn. Lep. N. Am., p. 285. (1862.) 

 5. — Front black. Vertex and sides of head, orange. Palpi, orange, 

 with the terminal article black. Antennae, black, with very deep pec- 

 tinations. Prothorax above, deep metallic blue. Prothorax below and 



