100 ZYGiENID^ AND BOMBYCIDiE 



There is sometimes a faint trace of a very narrow marginal band near 

 the apex. Fringes white. 



Beneath white ; on the primaries, the costal spots, the marginal dots, 

 and the outer row of the geminate submarginal band, are more con- 

 spicuous. All the other spots are obsolete, but there is, in addition, 

 a large spot on the discal vein scarcely visible above. Secondaries as 

 above, except that the markings are somewhat larger, and there are, in 

 addition, two or three black spots on the costa. All the markings 

 beneath are brownish black. 



The above description is drawn from two specimens, one from the 

 Atlantic States, the other from California, which differ in no wise, 

 except in the larger size of the western insect. These insects have, I 

 believe, a// the markings peculiar to this species (pi. 4, fig. 3, contains 

 nearly all of them), but very generally a large portion of the transverse 

 rows are obsolete, while the costal spots are always present (pi. 4, fig. 2.) 



$ . — Diff'ers from the ? in the following details : The abdomen is 

 yellowish below and has seven dorsal black spots. The secondaries 

 are yellow ochre above, and all the wings are yellowish beneath, with 

 the costa of the primaries whitish. Two Californian $ have the mark- 

 ings described above in the ? ; in two S from the Atlantic States the 

 markings are reduced in size and more or less obsolete. 



S . var. — A variety of the $ occurring in California has the outer 

 half of the primaries and all the secondaries suff"used with smoky, as 

 well as the entire under surface where it is yellow in the type (pi. 4, fig. i .) 



Expajtse of wings, $ 2.30, ? 2.50 inches. Length of body, $, i.oo, 

 ? 1.00 inch. 



Habitat. — Atlantic States, Southern States, California, Mexico (.'') 

 (Coll. generally.) 



Larva. — Dr. Harris (Ins. Inj. Veg., p. 250) gives the following des- 

 cription : "The full grown caterpillar measures one inch and three 

 quarters or more in length. It is clothed with long hairs, which are 

 sometimes black and sometimes brown on the back and fore part of the 

 body, and of a lighter brown color on the sides. The hairs, like those 

 of the other Arctias, grow in spreading clusters from warts, which are 

 of a yellowish color in this species. The body when stripped of the 

 hairs is yellow, shaded at the sides with black, and there is a blackish 

 line extending along the top of the back. The breathing holes are 

 white, and very distinct through the hairs." The following description 



