138 JOHN B. s:\nTH. 



1»A€HYL.IA Wlk. 

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



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

 hirge, heniisi)herical, not lashed ; j)alpi 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 ; antennte fusiform, 

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

 before base of ])rimaries, narrowing anteriorly ; vestiture rather 

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

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

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

 of unequal terminal spurs ; posterior tibiae with two pairs of unequal 

 spurs. Primaries well developed, 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 j^ointed at tip ; 

 the prongs are parallel, slightly divaricate at extreme tip. 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 Philampelus. 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 : 



I*, fieus Linu., 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, SjMnx ; 

 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. Sjyhinx; 

 Westw., ed. Dru. ii, p. 48, pi. 26, fig. 1, Sphinx; Hiib., Vei-z. 1,34, Pholus ; Wlk., 

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

 Clem.,® Journ. Ac. N. Sci. Phil, 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; Gundlach, Cont. Ent. Cuba, 201, Pachylia. 



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

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



