( i:58 ) 



Lethio hiKcilhtsa, finite, Hull. /I„fahi S,,r. X. Sri. i. p. 2C, (1HT4); Thaxt., rxi/rln- i. p. ?,0(1H74) 



(Newton, Mass., vii.) ; (iiote, /.<•. ii. p. 2J8. u. 03 (lHir>) (Mass. ; N.Y. ; wLsc). 

 Lelliia (!) luscitiosa, Strecker, I.e. (sub syn.). 

 Giiiujaiitim hiDcitiosa, Kirby, (hi. I.cp. Ihl. i. p. 181 (18112). 



S ? . Anteniiii nincli sliortiT in ? tluiu in S , being in tlic latter aliout two-fif'tiis, 

 in the former two-seventlis, tiie lengtii of the forewing. r.iijjus roughly scaled as 

 in (Irujjifi'rarum, prominent. Spines of foreleg not prolonged, first segment of 

 foretarsns nearly as long as segments 2 to 4 together ; sjmrs of mid- and hindtibiae 

 with a few sj)ines ; liindtibia mostly obviously spinose apically ; long apical spnr 

 of hindtibia about half the length of the first tarsal segment, or less ; this segment 

 as long as the other four together ; paron^vcliium reduced, witli a short slender lobe ; 

 midtarsns without distinct comb of long bristles ; third row of tarsal spines rather 

 less jtdinting distad than tlie s})ines of the other rows, especially in S. 



S . Tenth abdominal tergite similar to that of fforr/i us, very strongly compressed, 

 pointed, hooked, shorter than in yonlins ; the sternite nearly as in that species, 

 the lobe rather shorter, more rounded at end. Clasper as in drupiferdrum, dorsal 

 margin almost straight in middle ; harpe (PI. XXXIX. f. 10) divided into two lobes 

 by a rounded apical sinus, the lobes of nearly ei[ual length and width, botli slightly 

 curved towards each other and somewhat concave, th-e lower one rounded at end, 

 without dentition, the ujiper pointed and dentate at dorsal margin. Penis-funnel 

 (PI. XXVIll. f 43. p-f) obtusely rounded, convex beneatli, not prismatical ; ])enis- 

 sheath (PI. XXVIII. f. 43) somewliat twisted apically, ending in a sharp conical 

 process. 



?. Vaginal plate somewhat resembling that of H. chcrsis and gordiiis ; mouth 

 of vagina subtermiiuil, the anterior margin of the cavity somewhat sinuate in the 

 middle. 



Larva with minute black ring-dots situated upon the annulets ; horn with 

 black lateral line, tip black, head and horn rugose ; side-bands white, bordered in 

 front with pinkisli lilac— Food-plants : Snli.v ; Populus ; Betula. 



Pupa with a short (3 mm.) tongue-case, which is free, but lies closely against 

 the lireast. 



Hab. C!anada to Virginia, westward to the Mississippi basin and ( 'olorado. 



In the Tring Museum 4 larvae, 2 pupae, and 2 c?c? 13 ? ? from : N. Jersey ; 

 Denver, Colorado ((Jslar). 



111. Hyloicus drupiferarum. 



Sphinx (implferai-um Abbot & Smith, Lep. Georgia i. p. 71. t. 3G (/., i.) (1797) (on Cellis & plum) ; 



Smith, Trans. Amer. Eiit. Soc. xv. p. 177. t. 9. f. 3. 4 (genit.) (1888) (syn. pro parte ; Canada 



to Georgia, westw. to Calif., Vancouver I., Oregon, Colorado, Utah). 

 Letliia drupiferdrum, Hubner, Verz. bek. Sr/im. p. 141. n. 1510(1822). 



c??. Antenna short, only one-third (c?) or less (?) the length of the forewing. 

 Palpus much produced beyond the scaling of the frons. Spines of foreleg numerous 

 bat not long ; first segment of foretarsns incrassate, about as long as segments 

 2 and 3 together ; first midtarsal segment longer than the other segments together, 

 comb with some long bristles, spines of rows 2 and 3 rather close together and long; 

 long apical spur of hindtibia more than half the length of first tarsal segment, 

 which is longer than segments 2 to 5 together, the metatibial spurs often with one 

 or two spines ; paronychium with lobes, which, however, do not reach far beyond 

 tlie middle of the claw. There are two or three black lines in the cell of the 



