138 JOHN B. SMITH. 



PACHYLIA Wlk. 

 C. B. M. Lep. Het, i, 189. 



Body robust, heavy. Head large, free, rather proiiiiiieiit ; eyes 

 large, hemispherical, not lashed ; palpi reaching the middle of front; 

 thick, heavily clothed, so as to form a conic protuberance on front, 

 tongue strong, about half the length of the body; antennae fusiform, 

 with a tapering, curved tip. Thorax smooth, stout, well advanced 

 before base of primaries, narrowing anteriorly ; vestiture rather 

 loose at base. Abdomen moderate in length, cylindric, heavy, ob- 

 tuse at tip, the segments posteriorly spinnlose. Legs unarmed ; in- 

 creasing in length and strength posteriorly, median tibiae with a pair 

 of unequal terminal spurs ; posterior til)iiTe with two pairs of unequal 

 spurs. Primaries well develo])ed, apex acute, slightly excavate 

 below, outer margin somewhat convex at middle ; anal angle distinct, 

 but hardly drawn out ; inner margin sinuate. Venation of the 

 usual type; vein 9 wanting. Secondaries with apex acute, outer 

 margin obsoletely scalloped, somewhat produced on vein lb ; vena- 

 tion also of the normal type. The genitalia of the % are peculiar ; 

 the supra-anal plate divides not far from base, forming two long, 

 curved prongs, somewhat thickened in the middle and pointed at tip ; 

 the prongs are parallel, slightly divaricate at extreme tij). The side 

 piece is short and broad, without a distinct clasper, but with a some- 

 what chitinous inferior process set with spinules near base. This 

 structure would seem to ally the genus to the Bombycid type. In 

 wing shape, and in most other details of structure, the genus is close 

 to Philampehis. The form of the body, however, is distinctive, as is 

 also the genital structure. The species are all large, rather obscure 

 forms, and the genus is a tropical one. Our only species is Southern, 

 and extends also into South America. It is : 



P. flcus Liuu., Syst. Nat. ed. x, 491, Sphinx ; ed. xii, 2, 800, Sphinx ; Mus. L. 

 U. 353, Sphinx ; Clk.,» Ic. pi. 49, fig. 2 ; Dru.. Ex. ii, 44, pi. 26, fig. 1, Sphinx ; 

 Fabr.,* -Syst. Ent. 540, Sphinx ; Sp., Ins. ii, 145, Sphinx; Maut., Ins. ii, 95, 

 Sphinx; Ent. Syst. iii, 1, 366, Sphinx; Gmel., ed. Linn. S. N. 2380. Sphinx; 

 Westw., ed. Dru. ii, p. 48, pi. 26, fig. 1, Sphinx ; Hiib., Verz. 134, Phohis ; Wlk., 

 C. B. M. Lep. Het. viii, 189, Pachylin ; Burm.,* Sph. Brazil, p. 5, Deilephila ; 

 Clem.,*- Joiim. Ac. N. Sci. Pbil. iv, 1859. 158. Pachylia ; Morr.,» Syn. 1862, 

 181, Pachylia ; H. S., Corr. Blatt. 1865, 58, Pachylia ; G. & R., Pr. E. S. Phil. 

 V, 184, Pachylia; Bd., Sp. Gen. Het. i, 136, Pachylia; Butl., Tr. Zool. Soc. 

 Lond. ix, .578, Pachylia ; Guudlacb, Cont. Ent. Cuba, 201, Pachylia. 



Crameri Menet En. An. Acad. Petrol. Lep. pt. ii, 133, Choerocampa ; Grt., Pr. 

 E. S. Phil. V. 62, pr. syn. 



