128 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



with a very narrow marginal duskj'^ band; tlie second form has the 

 primaries mucli more sordid in hue, the secondaries are soiled, and 

 there is a considerable siiftusion of smoky in the outer part of the 

 secondaries. These forms run into each other, however, in such a way 

 as to make it impossible to believe them to be even varieties, much less 

 species. The head is dislin(;t, rather large, the palpi well developed 

 and reaching- to the middle of the front, which is only a little convex 

 and not at all bulging. The fore leg is very stout, the femur is much 

 thickened, abruptly narrowed toward the tip, where it is interiorly 

 excavated to receive the tibia. The tibia is stout, the epiphysis 

 inserted below the middle and reaching to the tip. The tarsi are quite 

 stout and rather short in proportion to the rest of the leg. The male 

 characters are as described for the section. The corneous part is 

 squared at the tip, where there is a somewhat beak-like projecting proc- 

 ess extending toward the middle of the upper portion of the harpes. 

 Further toward the base there is a shorter stout corneous process or 

 finger. There seems to be considerable range of variation in size, some 

 of the smaller specimens seeming almost crippled in comparison to the 

 largest. 



LARVA. 



Thaxteh, Papilio, 1883, 111, p. 17. — PAtuiAKD, Fifth Kept. U. S. \lut. Comm., 

 1890, p. 168. 



Stage V. — Head lleshy ])urple brown, shaded over the front of the 

 lobes, thickly mottled with little pale dots segregated into patches; 

 the upper epicraueal setae black, the rest white, coarse; width, 3 mm. 

 Body, sordid orange greenish, brighter on joints 2 and 12, tubercles 

 red. Dorsal vessel dark, centered with pale pigment. An obscure, 

 double lateral line between warts II and 111, resembling the faintly 

 showing tracheae, but less straight. Warts I and II surrounded by 

 faint pale rings. No distinct marks. Spiracles black edged. Warts 

 I to III elongated, with a central hair and crown of smaller ones at the 

 apex; white, except the central hair on 1 and II, which is black. Warts 

 IV and V single haired, VI with several pale hairs. No secondary 

 hairs. 



Stage VI. — Head wide, slightly bilobed; brown, with purple reticu- 

 lations and whitish dots over the face of the lobes, slightly shagreened; 

 width, 4.5 mm. Body nearly uniform reddish brown, a dusky black 

 dorsal stripe, and a faint reddish lateral one. Tubercles very small, 

 not i)rominent, all single iiaired except VI; orange color. Setae short 

 and fine except 11 on joints 5 to 7, which are long, black, slender, with 

 small spatulate tips. In others these spatulate hairs are i)resent on 

 joints 5-8, 12; 3, 5-9, 12 or 3-10, 12, the number being variable to this 

 extent. Spiracles, black rimmed. Dr. Thaxter states that there is 

 also a "rich yellow green" form. 



Cocoon. — Qaite tough, composed of silk and bits of wood, partly 

 formed by the substance on which it is made. 



