( 446 ) 



S ? . Breast on caoli side with a reddish tawny horizontal stripe, not found in 

 any other species ; abdomen liolow eiiinamon-rnt'ons, with creamy mesial spots, 

 largest on proximal segments ; legs the same colour as abdomen. A small vitreous 

 sjiace in a]iex of cell of forewing, not divided. Vitreous area of hindwing below 

 followed behind by a creamy [latoh. 



cJ. Tenth tergite shaped as ia /uci/ormis, but sinuate beneath before apex, not 

 at tip ; sternite of the same type as in staudingeri, but narrower. Left clasjier 

 (PI. LI. f. 18, I) deeply sinuate ventrally, the proximal part not so much 

 jirojecting as in fiiciformix, also broader than in thi/sbe, the a])ical lobe less slender 

 than in tlii/she, harpe not projecting, gradually narrowed, with a few hairs ; right 

 clasper (;•) broader than in tkysbe, feebly emarginate ventrally beyond middle, harpe 

 (//) without free process, gradually narrowed to a point. Penis-fnnnel (p-f) 

 carinate beneath, ending in a slender and smooth point ; penis-sbeath differing from 

 that of all the other species in the apical process being truncate and, at the apical 

 edge, dentate (PI. LL f. 18, P). 



Early stages not known. 



Hah. Atlantic district : Canada ; New England ; rare, and therefore probably 

 overlooked in the more southern States. 



In the Tring Mnsenm 1 c?, 1 ? from N. York. 



377. Haemorrhagia diffinis. 



Sphinx furiform:^ Abbot & Smith (nan Linnf?, 1758), Iiix. Georgia i. p. 8G. t. Vj (1797). 

 *.\[an-arilnssa (ViffiniK Boisduval, Spe,-. Gen. Up. i. t. 15. f. 2 (18.Sfi) (poll. Charles Oberthiir). 

 Sphin.e fufifwinis (!), Kifby, Cut. Lift. Hel i. p. 620. sub u. 21 (1892). 



c? ? . Vitreous area of cell of forewing not divided by a scaled fold. Body 

 more shagtry than in gracilis and thgithv, but less than in titi/us. Legs more or less 

 extended black ; long spurs comparatively shorter than in fifgu.i. Very variable 

 individually, seasonably, and geographically. 



cJ. Tenth segment essentially as in thgshe, sternite always asymmetrical, often 

 emarginate at the right sight, the vestige of the right lobe of ccnata then being a 

 little more distinct than usually. Claspers (PI. LI. f. 21) not very unlike, often 

 nearly the same, the right one generally slenderer ; left harpe ending in a short 

 ])rocess, bearing some hairs ; proximally of the process there is a curved, somewhat 

 halfmoon-shaped hump densely beset with minute spines ; right harpe similar, but 

 the jirocess longer, often clubbed, with long hairs at the end. Penis-funnel (p-f) 

 truncate, smooth ; ju'ocess of penis-sheath simple, pointed. 



Larva similar to that of thgsbe ; dorsally shaded with brown, mesial line 

 accompanied at each side by a darker (not paler) line. — Food-plants : Sgmpkori- 

 carpiis, Lonicera, Ajwci/iium, etc. 



Hub. Nearctic Region from the Atlantic to the Pacific. 



The various forms of this insect have been described as 13 distiuct species. Since 

 Ilulst proved by breeding that the forms of thgsbe with dentate and non-dentate 

 wing-borders were tlie same species, the belief in the distinctness of the allies of 

 diffiiii.s has become shaky. Smyth, in 1900, succeeded in rearing several broods 

 of dijlinis, and found that the differences assumed to be specific by the older writers 

 fire in fact only seasonal or individual. On comparison of the individuals of our 

 long series from various j)arts of the Nearctic Region we find that there is no 

 structnriil difference between all these "species" in question, but that there are 

 well-marked geograjihical races each variable in itself. These races are : (1) the 



