SPHINX. 195 



margin of the base ; a broad diffuse blackish-brown apical streak 

 with a costal line above it in apical interspace, and blackish-brown 

 streaks in the interspaces, except the medio-superior ; an abbre- 

 viated blackish-brown line edged exteriorly with grayish near the 

 terminal margin. Posterior wings yellowish-white, with a black 

 spot at the base, a median and broad marginal band black. Length 

 of the body 16 lines ; expansion of the wings 35 lines. 



Var. A. a male. — Brownish, with two distinct dark brown lines 

 from the inner margin of base and the middle of the costa, angu- 

 lated on the disk ; over the median nervnles the wing is dark 

 brown, with faintly indicated irregular lines crossing the middle of 

 the nervules to the costa and grayish spots exterior to them. 

 Length of body 22 lines ; expansion of the wings 54 lines. 



Near Jalapa, Mexico. Acad. Nat. Sciences, Philadelphia. 



Var. B. a male. — Blackish cinereous ; two distinct black angu- 

 lated lines crossing the posterior portion of the disk from the inner 

 margin of base ; with a band of blackish-brown lines crossing the 

 middle of the nervules. Length of the body 20 lines ; expansion 

 of the wings 47 lines. 



Near Jalapa, Mexico. Acad. Nat. Sciences, Philadelphia. 



Clemens. 



Mr. Walker's lugens is probably one of these varieties of sordida. 

 Mexico; Texas; Massachusetts. 



4. S. plebeia Fabr. Sp. II, 146, 31. 



Head and thorax dark gray, with a transverse black line on 

 prothorax continued to the tegulae, which are pale grayish beneath 

 it. Abdomen gray, with a slender black dorsal line and a black 

 stripe on each side containing whitish spots. Anterior wings 

 gray, with a short black stripe at the base of the inner margin, 

 two very oblique, short black lines from the basal portion of costa 

 to the disk, sometimes uniting with the line from the base on the 

 disk, and two distinct serrated black lines crossing the middle of 

 the nervules from about the origin of post-apical to the lower third 

 of inner margin ; black streaks in all the interspaces, that in medio- 

 superior contained in a white streak, and short white streaks on 

 the terminal portion of medio-central and posterior interspaces ; 

 discal spot white and the nervules tipped with blackish at their 



