( 447 ) 



Atlantic raco, cxteinliiii;- in (Jaiiadi. westwai'ds to the r.i.c.ilio : (2) the central race, 

 inhabiting the eastern side of the Rockies from New Mexico to Montana ; and (3) 

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

 Pacific Ocean. 



We keep bnicri distinct for reasons given under that heading. 



(I. 11. (liflinis (//ffrn/s, 



Sphfitxfticiforinis. Abbot & Smith, l.r. (p;irtiin ; imago). 

 *Mnn'oi/ln!isa dtjjiiii>i Boisduval, l.r, 



Hemaris diffiiiis, Fernald, Sphiiir/. N. Engl. p. 14 (1886); Smytb, EhI. Nens xi. p. .584 (IHOO) 

 {d/j^/d.'i bred from ax'dlfiri!<, and tbe reverse). 



(S ? . Legs for the greater part black ; middle of tail of the same colour 

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

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



Three principal forms, connected l)y intergradations : — 



a'. IL (U/JinIs (Uffinis f. vern. tenuis. 



*Hemarh tenuis Grote, Bidl. Buffalo Soc. N. Sc. i. p. 4. 18. t. 1. f. « (1874) (N. York ; Penn. ; — 



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



Wise.) ; id.. P.'ii/rhe ii. p. 6lj (1877) rCoq., Tram. Depl. Arjr. Illin., App. p. IGd (18801 ; Fish., 



Caiiad. Eld. xv. p. 238 (1883) (Buffalo ; larva) ; id.. I.e. xvi. p. 143 (1884) ; Fern., Splihuj. N. 



Enrjl. p. 14. n. 1 (1886) ; Holl., Camul. Enl. xviii. p. 101 (1886) (Pittsburgh ; larva on S;/»)y;A. 



racem.) ; Grote, ihid. xviii. p. 130. n. 7 (1886) ; id.. Hawk Moths N. Am. p. 26 (1886) ; id., 



Canad. Ent. xix. p. 19. 79 (1887) ; Smith, I.e. xv. p. 93 (1888) ; Edw., Bull. U. Si. Not. Mus. 



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



Cauad. Eut. xxix. p. 292 (1897) (Manitoba) ; Smytb, Eut. Ncu-s xi. p. .584 (1900) (.spring form 



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

 Macroglnssa fuwosa Strecker, Lep. Hlwp. Net. p. 93 (1874) ; Grote, Cauad. Ent. vi. p. 199 (1874) 



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

 Bemark fumosa, Butler, Trans. Zool. Soc. Lond. ix. p. 518. n. 2. (1877) ; id.. I.e. p. 634 (1877) ; 



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

 *flemnris metat/ietis Butler, Trans. Zool. Soc. Lond. ix. p. 519. n. 7 (1877) (Texas ; — Mus. Brit.) ; 



\A.,l'apilio i. p. 103 (1881) ; Maass., Strtt. Ent. Zeit. xli. p. 51 (1880) {^axillaris ex err.) ; 



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



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

 Mueroijlmsu tenuis, Pilate, I'apilio ii. p. 67 (1882) (Dayton, O., rare). 

 Bemaris diffinis, Beutenmiiller, Bull. Amer. Mus. N. Sc. vii. p. 278. t. 2. f. 4 (1895) (N. York ; 



V. vi. vii. viii.). 



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

 The spring form. 



//. //. (////l/i/'s (//'//iiiis f. aest. )////i/iiti. 



* .Vm.Toglossa diffinis Boisduval, I.e. ; id., Spec. Gin. Lip. Bet. i. p. 366. n. 54 (1875) (larva excl.). 



iS'e«(« diffinis, Harris, iu Sillim., .hum. Sc. Art xxxvi. p. 129 (1839); Walk., List Lep. Ins. B.M. 

 viii. p. 81. n. 3 (18.56) ; Clem., Journ. Ac. N. Sc. I'hilad. iv. p. 129. n. 1 (1859) ; Morris, Cat. 

 l.ep. N. Am. p. 17 (1860) ; Clem., in Morris, Siju. Lep. N. Am. p. 148. n. 1 (1862) ; Harris, 

 ed. Flint, Jus. Inj. Veil. p. .328 (186 ) ; Mead, Canad. Ent. ii. p. 157 (1870) (larva) ; Bowl., 

 iliid. iii p. 143 (1871) (Quebec) ; Grote, ibid. iii. p. 101 (1871) (Alabama) ; Lintn., Enl. Contr. 

 1. p. 40 .190 (1872) ; id., I.e. ii. p. 167 (1873). 



Srsiii/ueiformisr, Emmous, .\at. /list. X. Yorl.- p. 221. t. 32. f. 10 (1854). 



Ilnmirisdijjinis, (Jroto, Hull. Bvffalo Soe. N. 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. 22(1. 

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

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

 B'ern., Caiuul. Ent. xvi. p. 21 (1884) (Orouo, Maine); Grote, Hawli Moths N. Am. p. 26 (1886) ; 



