560 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



indicatioa of a central baud. Fringes yellowish. The under side of all the wings is 

 dull ocher-yellow, with broad terminal black bauds. In the female all the yellow is 

 replaced by dull gray. Expanse of wings, from 2^ to 3 inches. 



8. Smerinthus excacatus (Abbot and Smith). 



This hawk-moth we have found in the egg and different larval stages 

 on the willow at Brunswick through July and August. Some indi- 

 viduals became much belated. A specimen found at Providence, Sep- 

 tember 28, pupated October 1, and the moth appeared during the last 

 week of the following June. 



Larva.— Head conical, granulated, with a yellow (sometimes a white) line meeting at 

 the apex ; seven oblique lateral yellowish lines on each side, from the middle of the first 

 one (which is fainter than the others) a line passes forward to the front edge of the 



prothoracic segment, converging towards its oppo- 

 site line; the last line is broadest and most dis- 

 tinct, reaching to the base of the caudal horn, 

 which is lilac green ; spiracles deep lilac or black ; 

 thoracic feet lilac and reddish. Length, .45"i"i. 

 In the stage be/ore the last, length, 25"^"'. — The 

 body is more closely granulated ; the lateral 

 stripes less distinct; the thoracic segments not 

 so small in proportion to the head, and there is a 

 subdorsal double row of reddish spots ; the apex 

 of the head is discolored with reddish, while the 

 coarsely granulated caudal horn is yellowish in the 

 middle and reddish at the end. On the side near the base of the abdominal legs is a 

 dark reddish -brown spot. 



IFiG. 189— Smerinthus exccecatus 

 Coiite del. 



Le 



9. Halesidota agassizii Packard. 



Mr. Stretch has in California reared this species (now believed by Mr. 

 Henry Edwards to be the same as H. maculata Harris) from the willow. 

 I copy his description of the larva, as it appears to differ from our larva 

 in being usually black. What he describes as a variety is like a larva 

 of R. maculata we have found on the sycamore. 



The cocoon is obtusely oval, tolerably compact and composed chiefly 

 of the hairs from the body of the caterpillar, with but a small amount 

 of silk in its composition. The larva is double-brooded, and feeds on 

 the willow; the first brood appears on the wing in June, the second 

 being full-fed about the middle of October, and disclosed from the 

 pupa early in the spring. 



H. agassizii differs from the other species of the genus found in the 

 United States, in the absence of all tendency to semi-transparency in 

 the anterior wings, such as appears in the thinly scaled tessellaris and 

 edwardsii ; or to silvery markings, as in the case of caryw and argen- 

 tata ; the costa is also less rounded at the apex than in any of the 

 species mentioned, but the larval characters clearly retain it in the 

 genus. 



Larva. — Head, body, and prologs entirely black. Abdominal legs pale dirty yel- 



