NORTH AMERICAN LEPIDOPTERA. 97 



which extends around on the costa, where it grows narrower as it extends out- 

 ward ; the borders are dark brown and opaque and marked more or less with 

 rusty-red. Expands 1.70 — 1.90 inches; 43 — 48 mm. 



Hub. — Canada, Hudson Bay Territory, Maine to Georgia, westward 

 to Missouri, Iowa. 



This is one of our more common species of the East, and there are 

 southwardly at least two broods annually. It extends furthei- North 

 than most other species. It has been taken in New York in May 

 and again in July, fresh specimens in each instance. Mr. Lintner 

 says it is essentially a day flyer, and he has never taken it at dusk. 

 It was usually on Lupinus perennis. 



Among the specimens in Mr. Lintuer's collection which I exam- 

 ined were many varieties in the amount of yellow on the abdomen, 

 some with very distinct bands and some without any bands whatever. 

 A form of the latter, in which the red stains are very strongly 

 marked, must have furnished the type of Mr. Strecker's (ethra. 



In the " Canadian Entomologist" for April, 1887, vol. xix, p. 79, 

 Mr. Grote, in a rambling note on this species, mentions nearly all 

 the American forms without adding anything new save a speculation 

 on the probable origin of the species. 



H. gracili!<» G. & R., Pr. Ent. Soc. Phil, v, 174, pi. 3, figs. 1 and 2, Hxmorrhmjin ; 

 (irt., Buft'. Bull, i, 8, Chamassesia ; id. 18, Hxmorrhngia ; Beth. Can. Ent. i, 

 10; Lint, Ent. Cont. i, 40, Sesia ; Bd., Sp. Gen. Het. i, 371, Macroglossa ; 

 But]., Tr. Zool. Soc. Lond. ix, 522, Hemaris ; Grt., BuflF. Bull, iii, 220. Cha- 

 mfesesia ; Fernald, Sphing. 161, Hemaris ; Grt., Hawk Moths 27, Chamassesia. 

 ruflcaudis J Wlk. C. B. M. Lep. Het. viii, 82, Sesia; G. & R„ Pr. E. S. Ph. v, 

 149, 175, pr. syu. 



Male. — Form somewhat small and slight. Head and thorax above, clothed 

 with olive green appressed hair; basal abdominal segments above similarly col- 

 ored. Palpi black at the tips, whitish beneath. Orbits of eyes white; in front 

 of these a few whitish scales. Laterally, the under thoracic parts are clothed 

 with long white hair extending from behind the eyes to base of secondaries. 

 Centrally, the under thoracic parts are clothed with long white hair, which is 

 separated from the lateral white hair by two sublateral broad stripes of long 

 reddish hair; a character which is very distinctive when we compare it with the 

 coucolorous pectus of allied species. Anterior femora clothed with thick white 

 hair. Anterior tibise pale red, as are also the middle and posterior legs, both 

 femora, tibiae and tarsi. Abdomen, except basal segments above, dark red ; third 

 basal seguieut fringed anteriorly with pale hairs ; fourth dorsally. with a few 

 similarly colored appressed hairs; fifth and sixth with a few pale lateral hairs. 

 Anal tuft black laterally, centrally pale red ; under surface of abdomen pale red, 

 with a central subobsolete series of pale spots composed of aggregated hairs. 

 Laterally, spots of similar pale hairs at the base of the segments ; the sides of 

 the abdomen show subtufts fringed above with jjale yellowi.sh, similarly colored 



TR.\NS. AMER. KNT. SOC. XV. (13) MAY, 1888. 



