445 



Larva : "Length, when at rest, about five-eighths of an inch, and stout in 

 proportion. Head, pohshed and rather small, narrower than the second seg- 

 ment. Body uniform and cylindrical, tapering a little posteriorly. Segmental 

 divisions, well defined and deeply cut ventrally ; each tubercle emits a tuft of 

 short but rather strong hairs. Ground colour, bright yellowish-green, more 

 decidedly green on the back; head, pale yellow; the mandibles light brown. 

 A fine but clear yellowish-white line forms the dorsal stripe; there is a much 

 broader stripe of the same colour along the spiracular region, and the space 

 between it and the spiracles is speckled with streaks and spots of the same 

 colour. Spiracles black, hairs greyish. Ventral surface, legs and pro-legs 

 uniformly pale green." (Porritt, Entomologist XV, 90, 91.) 



Pupa: "Green at first, afterwards pale dingy-brown, more or less suf- 

 fused with reddish-brown along the dorsal area. Dorsal and lateral lines in- 

 ternipted, blackish-brown; warts and hairs as in the larva except that some 

 of the dorsal series are blackish. Head flattened, marked with brown, and 

 thickly covered with short hairs. Wing-cases yellowish-green, faintly streaked 

 with brown. Attached by anal segment to stem of food plant or other object 

 near." (South, Entomologist XVHI, 277.) 



60. OiDAEMATOPHORUs LONGiFRONS Walsingham. PI. XLVII, fig. 15. 



PI. LIV, fig. 11. 

 Ptcrol>horus longifrons Walsingham, Biol. Cent. Am., Lep. Het. IV, 448, 1915. 



Head clothed with white tipped gray scales. Frontal tuft long, conical. 

 There is no frontal prominence within the tuft. Antennae whitish. Palpi 

 long, porrect, about as long as entire head, including tuft, and exceeding front 

 by about length of head: grayish, second joint with rather thick vestiture above. 

 Fore and middle legs white, shaded with brownish gray inside and at tips of tar- 

 sal joints. Third pair whitish, lightly shaded with brownish gray. Thorax 

 anteriorly clothed with white tipped, very pale grayish scales, posteriorly with 

 a heavy Y-shaped mark outlined in white, the intermediate space gray-brown. 

 Abdomen brownish gray with the white margins of the Y continued as a broad 

 whitish dorsal stripe containing three gray brown lines, the central one with 

 blackish dots in the posterior margins of the segments. Both lees and abdomen 

 are very long and slender. 



Primaries grayish on costa, becoming brownish on inner margin, with 

 scattered black and a few white scales. Continuing from the pale front part 

 of the thorax there is a whitish basal streak. Above base of cleft a whitish 

 costal mark faintly relieves a dark spot following it. There is a black dot near 

 middle of cell, a faint dark spot or a few pale scales at base of cleft in some 

 specimens, and occasionally a few obscure black dots at tips of veins in first 

 lobe. Secondaries and all fringes gray-brown. Expanse 25-28 mm. 



Distribution: Mexico. Texas, Mar.; Ariz., June; S. Cal. Sept. 



We have fourteen specimens of this species from the states men- 

 tioned. Among them we find two forms of genitaha, hut we arc 

 utterly unable to divide the series by superficial characters, and since 



