(447 ) 



Atlantic rac(>, fxtemliiiy in Canada westwards to the P.icitic ; ('2) tlie cciitrai race, 

 inhabiting the eastern side of the Rockies from New Mexico to Montana ; and (:}) 

 the Pacific race, occupying the country between the Eocky Mountains and the 

 Pacific Ocean. 



We keep hvun'i distinct for reasons given under that heading. 



(I. 11. (lilfi)iiA (lill'mis. 



Sphinx fucifvrmix. Abbot & Smith, /.<•. ( parti m ; imago). 

 *.}fiirroglnsiia diffiiih Boisduval, I.e. 



Ifemaris diffinh, Fernald, Spliiiif/. N. Engl. p. 14 (IS.SO) ; Smyth, Enf. Xeirs xi. p. ,5K4 (I'JUn) 

 (diffiiiis bred from axillciri'i, and the reverse). 



c??. Legs for the greater jiart bhick ; middle of tail of the same colour 

 as the two previous segments and thorax ; underside of abdomen black ; base of 

 wings bla.clc above and below, with little pale scaling. 



Three princijial forms, connected by iutergradations : — 



a'. II. dij/l/u's ilijfhiiii f. vern. tejiids. 



*Hemnris tennis Grote, Bull. Buffalo Soc. N. Sc. i. p. 4. IS. t. 1. f. « (1874) (X. York ; Penn. ; — 



Mus. Brit.) ; id., I.e. ii. p. 224. n. 3 (1875) ; id., /.-■. iii. p. 220. n. 5 (1877) (N. York ; Ohio ; 



Wise.) ; id.. P.'ii/rhe ii. p. GO (1877) ; Coq., Tmn.«. Dept. A;/r. Illin., App. p. ICO (1880) ; Fish., 



Caiiad. Ent. xv. p. 238 (1883) (Buffalo ; larva) ; id., I.e. xvi. p. 143 (1884) ; Fern., Sphiwj. X. 



Engl. p. 14. n. 1 (1886) ; Holl., Canad. Ent. xviii. p. 101 (1886) (Pittsburgh ; larva on Sijmph. 



racem.) ; Grote, ibid, xviii. p. 130. n. 7 (1886) ; id., Hmvk- Moths N. Am. p. 26 (1886) ; id., 



Canad. Ent. six. p. 10. 79 (1887) ; Smith, I.e. xv. p. 93 (1888) ; Edw., Bnll. U. St. Xaf. .Mns. 



XXXV. p. 37 (1889) (liter, rel. to metam.) : Kirby, Cat. Lep. Het. i. p. 626 n. 24(1892) ; Hanh., 



Canad. Ent. xxix. p. 292 (1897) (Manitoba) ; Smyth, Ent. Xews xi. p. 584 (1900) (spring form 



of diffinis) ; Heath, Canad. Ent. xxxiii. p. 99 (1901) (Manitoba). 

 .^f<lCl■oglossa /nmo.vi Strecker, Lep. Rlaip. Het. p. 93 (1874) ; Grote, Canad. Ent. vi. p. 199 (1874) 



(fresh specim.) : Streck., I.e. t. 13. f. 3 (1876) ; id.. I.e. p. 140 (1877). 

 Hi maris fianosa, Butler, Trans. Zool. Soc. Loml. ix. p. 518. n. 2. (1877) ; id.. I.e. p. 634 (1877) ; 



Maass., I.e. xli. p. 69 (1880) (= tenuis). 

 *Hemaris metathetis Butler, Tran.f. Zool. Soc. Loud. ix. p. 519. n. 7 (1877) (Texas ; — Mus. Brit.) ; 



id.,Papilio i. p. 103 (1881) ; Maass., Stelt. Ent. Zeit. xli. p. 51 (1880) {^axillaris ex err.) ; 



Grote, Canad. Ent. xviii. p. 130 n. 11 (1886) ; Edw., Ent. Amer. iii. p. 223 (1888) ; Smith, I.e. 



XV. p. 91 (1888) ( = thetis) ; Kirby, Cat. Lep. Het. i. p. 627. n. 26 (1892). 

 .Maeroglossa tenuis, Pilate, Papilio ii. p. 67 (1882) (Dayton, 0., rai-e). 

 //> maris diffinis, Beutenmiiller, Bull. Amer. Mus. N. Sc. vii. p. 278. t. 2. f . 4 (1895) (N. York : 



V. vi. vii. viii.). 



S ?. Yarialde iu size, and also somewhat in colour. Border of forewing even. 

 The spring form. 



b'. II. diffinis dilfinis f. aest. t/if/inis. 



*.]faerogIo3sa diffinis Boisduval, /.<•. ; id., Spec. Gen. Lep. Het. i. p. 366. n. 54 (1875) (larva e.xcl.). 



Sesia diffinis, Harris, in Sillim., ./lurn. Sc. Art xxxvi. p. 129 (1S39) ; Walk., List Lep. In.f. B..M. 

 viii. p. 81. n. 3 (1856) ; Clem., ./ourn. Ac. N. Sc. Pliilad. iv. p. 129. n. 1 (1859) ; Morris, Cat. 

 Lep. y. Am. p. 17 (1860) : Clem., in Morris, S,,n. Lep. X. Am. p. 148. n. 1 (1862) ; Harris, 

 ed. Flint, Ins. hij. Veg. p. 328 (186 ) ; Mead, Canad. Ent. ii. p. 157 (1870) (larva) ; Bowl., 

 ibid. iii. p. 143 (1871) (Quebec) ; Grote, ibid. iii. p. 101 (1871) (Alabama) ; Lintn.. Ent. Cuntr. 

 i. p. 40 .190 (1872) ; id., I.e. ii. p. 157 (1873). 

 - nifuciformis'l, Emmous, .Vo^ Hist. X. York p. 221. t. 32. f. 10 (1854). 



Il.maris'diffinis, Grote, Bull. Buffalo Sne. X. Sc. i. p. 5. 18. t. 1. f. 8 (1874) ; Thaxt., Psyche i. p. 29 

 (1874) (Newton, Mass., E. v.— M. vi.) ; Grote, I.e. ii. p. 224. n. 4 (1875) ; id., I.e. iii. p. 220. 

 n. 6 (1877) (Canada ; X. York ; Mass.) ; Mart., Trans. Dept. Ayr. Jllin. xviii. App. p. 99 

 (1880) ; Coq., ibid. p. 160 (1880) ; Reed, Rept. Ent. Soc. Ontario xii. p. 50 (1882) (larva) 

 Fern., Canad. Ent. xvi. p. 21 (1884) (Orono, Maine); Grote, Hawk .^foths X. Am. p. 26 (1886) ; 



