( 139 ) 



i'ort'wiiij!: correspoudiiig to the bases of tlu' hrauelics of the radial trachea in 

 the chrvsalis. The black veutro-lateral lines of the abdomen are very distinct. 



c?. Tenth abdominal tergite rather strongly curved, sides of process nearly 

 jiaralle!, apex rather abrnptly narrowed to an obtusely pointed hook, npper surface 

 rather flattened, underside convex; stcrnite with a broad, distally somewhat 

 narrowed, gently curved, apically sinuate and rounded mesial lobe. Clasper broadly 

 side-shaped, rather narrow at end, dorsal margin more rounded than ventral one ; 

 harpe (Fl. XXXVIII. f. 19) produced ventro-distally into a linger-like process, which 

 is slightly curved ; the dorso-distal corner occupied by a heavy curved tooth, 

 accompanied at the distal edge by a few smaller teeth. Penis-funnel (PI. XXVIII. 

 f. 41) ventrally produced into a solid pointed cone ; penis-sheatli dorsally prolonged 

 into a concave, apically rounded process, which is armed jnst before end liy a 

 siiarp tooth. 



$. Vaginal plate (PI. XXI. f. 4) much wrinkled, the proximal mesial part 

 convex, raised in front of tlio vaginal cavity, forming a kind of I'oof over it wiiich 

 conceals the ojiening of the vagina from view ; behind the cavity there is a smooth 

 large tubercle, rather abruptly truncate proximally, the plate at both sides of this 

 tubercle concave. 



Larva with red obliijue side-bands, bordered with white distally ; head and 

 horn rugose, not granulose. — Food-plants : Primus ; Pints ; Syringa ; etc. 



Pupa : tongue-case free, 6 mm. long, obviously longer tlian in liiiustri ; 

 cremaster ending in two rather long points. 



Two broods ; apparently no seasonal vaiiation. 



Hab. Nearctic region. 



Two geographical races which arc structurally tlie same. 



(I. II. (Inipiff'i'uriiiii (Inijji/erdritm. 



Sphinx driipiferariim Aljbot >!e Smith, l.i\ : Harris, in Sillim., Jnuni. Sci. .irt x.vxvi. p. 'I'M. ii. 3 

 (1839) : Walker, List L,p. Ins. IS.M. viii. p. 218. u. 7 (185G) ; Fitch, Ri'pi. Lis. X.Y. lii. p. Mi 

 (185fi) ; Clem., Juin-n. Ac. N. Set. Phihicl. iv. p. 172. n. 08 (1859) (Penn. ; Jlass. : on plum) ; 

 Morris, Cut. Lep. N. Am. p. 18 (18G0) ; Ciem., in Morris, Syii. Lep. N. Am. p. 197. n. (> (18(J2) ; 

 Harris, ed. Flint, Ins. Iiij. Veget. p. 328 (1802) ; Lintn., Proc. Ent. Soc. Phihd. iii. p. Of.8 

 (1804) (descr. of /.); arote & Rob., Pn)c. Ent. Soc. PhlUid. v. p. 165. n. 93 (180.')) (Atlantic 

 district) ; Reed, Cunud. Ent. iii. p. 5. fig. 1. 2. 3 (/.,/'., /.) (1871) (Ontario, vii viii.) ; Bowie?, 

 Ibid. p. 14:5 (1871) (Ontario) (vi.) ; Lintn., Ent. Cwiti: i. p. 192 & iii. p. 179 (1872) (N.Y., vi., 

 larva on plum viii.) ; Tha.xt., Psyche i. p. 30 (1874) (Newton, Mass., rii.) ; Boisd., Spec. Gen. 

 Lep. Met. i. p. 97. n. 34 (1875); Caulf., Canad. Ent. vii. p. 241. n. 14 (1875) (Montreal, commnn, 

 vi. vii.) ; Mart., Traz/.s-. Dept. Ai/r. Illin. xviii. App. p. 104 (1880) (larva) ; Reed, liept. Ent. 

 Soc. (Jnt. xii. p. 07. fig. (1882) (metam.) ; Saund., Lis. Ltj. Fruit p. 103. f. 170. 171. 172 

 (1883) (all stages descr.) : Fern., Cnnud. Ent. xvi. p. 21 (1884) (Orono, Me., common) ; Jack., 

 ibid. xvii. p. 31 (1885) (Quebec) ; Fern., Sjihing. N. Eiujl. p. 38. n. 14. t. 1. f. 2 (i.). 3 (/.). 4 {p.) 

 (1880); Grote, Hau-L-.Moths A'. Am. p. 43 (1880); Smith, Tmns. Aniei: Ent. Soc. xv. p. 177 

 (1888) (partim); Ediv., Hull. E. St. X. .]L,.'<. xxxvi. p. 47 (1889); Dyar, in Riley, Ins. Life 

 iii. p. 322 (1891) (N.Y. ; electr. light) ; Beutenm., Bxill. Amer. Mits. N.ff. vii. p. 300. t. 5. f. 1 

 (1895) (X.Y. ; descr. of l.,p.,i.: on apple, plum, Celtis) ; id., I.e. viii. p. 291 (1890) (metam., 

 on Prnnus) ; Trum., Ent. Xeirs viii. p. 27 (1K97) (S. Dakota) ; Hanh., Cmiad. Ent. xxix. p. 292 

 (1897) (Manitoba) ; Rowl., Ent. Sews x. p. 11 (1899) (Missouri ; on apple, plum) ; Nash, ibid. 

 xi. p. 581. fig. (19U0) (fine photo of larva) ; Fletch., Rcpt. Ent. Soc. <Jnt. -xxx. p. 32. f. (/'.). 

 7 (/.) (1900) ; Fern., Ent. News xi. p. 581. t. 10 (1900). 



6 ?. The well-known Atlantic form. 



Hub. Canada to Georgia westward to the Mississipj)! basin ; rather common. 

 In the Tring Museum 4 larvae, 1 pupa, and S (Jc?, 11 ? ? from : Ontario ; 

 Maine ; N. Jersey ; New York. 



