51 



no perceptible red apical shading. The body squaraation (or scaling) is rather rough, 

 and in size it is the smallest of our species yet described. The external margins of the 

 wings are more rounded and full than in any of our other known species of Hemaris. 

 Expanse 1.50 inch ; length of body .80 inch. 



3. Hemaris margixalis, Grote. 



The moth has the upper side of the thorax of a yellowish olive-coloured shading, the 

 scaling becoming deep yellowish over the basal abdominal segments dorsally ; middle 

 segments black — the two last deep yellowish. The anal tuft black, with central yellowish 

 hairs ; the abdomen black ; legs black ; the thorax underneath is sulphur white. The 

 body seems narrower, more fusiform, than in the other species, and the scales more 

 depressed. Wings largely vitreous, ornamented as usual, but with a wider terminal 

 band on the front wings than is seen in H. diffinis. The inner edge of this marginal 

 hand is plainly dentate or toothed inwardly on the iqyper spaces. There is a reddish apical 

 stain as in diffinis. Expanse 1.65 to 1.70 inch ; length of body .95 inch. 



Mr. Grote thus separates these three northern species of Hemaris : — 



Terminal band of front wings even on its inner edge — tenuis. 



" " interspaceally roundedly exserted on its inner edge — 



diffi7iis. 



" " insterspaceally dentate on its inner edge — marginalis. 



4. H^MORRHAGiA UNiFORMis, Grote and Robinson. 



Sesia ruficaudis, Walker, C. B. M. Lep., p. 82, Part YIII. 



" On the other hand, the species of Htemorrhagia are Indian red and olive, with 

 flattened body hairs, and by their form prepare us for the still more compressedly-shaped 

 species of the genus ^llopos." (Grote.) 



Moth. — " Fawn colour ; head whitish about the antennae and beneath, with a brown 

 band in front ; the breast testaceous ; abdomen deep red fawn colour at the base, %vith 

 testaceous spots along each side ; hind borders of segments black ; apical tuft red, with 

 some black hairs on each side ; wings limpid deep red at the base, and with broad deep 

 red borders ; fore-wings deep red at the tips and with a blackish discal streak. Length 

 of the body, 9-12 lines : of the wings, 18-24 lines." {Walker^s description.) 



5. H^MORRHAGiA THYSBE, Fabricius. 



Sphinx Thysbe, Fabricius. 

 Sphinx Pelasgus, Cramer. 

 S^'sia Thysbe, Fabricius. 



Sesia Cimbiciforniis, Stephens, 111. Brit. Ent. Haust., Yol. I., p. 135. 



Sesia Thysbe, Walker, C. B. M. Lep., Part YIIL, p. 82. 



Sesia Thysbe, Clemens, Syn. N. A. Sph. 



Sesia Thysbe, Morris, Syn. A. Lep., Sm. Ins., p. 149. 



Sesia Pelasgus, Harris, Ins. Inj. Yeg., p. 328. 



Hoemorrhagia Thysbe, Grote and Robinson, 1865. 



Mature Larva. — The body tapers towards the front and is of a light yellowish-green 

 colour, deepening on the sides; the body studded with green and yellow granulations; under- 

 neath the colour is dull rose, bordered by a buff stripe ; a reddish stripe on the upper 

 side of the body and white yellowish-green stripes on the side ; the stigmata are red, 

 with a white dot at each extremity ; head granulated, dull green ; when at rest partially 

 buried beneath the first segment ; caudal horn two inches long, curved, light blue, tipped 

 with yellow and with black and white granulations ; legs black, prolegs green ; found in 

 August and September; feeds on the snowball {Viburnum Opulus), the snow berry 

 (Symphoricarpus) and hawthorn (Gratcegus). Before going into the chrysalis state, it 

 undergoes a marked change of colour, inclining to purplish-red and ochre-yellow. The 

 €Ocoon is formed of a few leaves drawn together by a very slight spinning. 



The moth has the thorax deep olive-green, mixed with brown ; the breast and legs 



