THE CANADIAN ENTOMOLOGIST. 35 



There is a variety in which the stripes, and later the spots, are bright 

 lemon yellow instead of white. The colour seems to be constant for an 

 individual. The larvae live together in rather small swarms, not exceed- 

 ing fifty, till after the last moult, when they separate, often leaving the 

 food-plant to ascend another in the vicinity. They then feed singly to 

 maturity. 



Food-plant, Andromeda ligiistritia. 



At 



NOTES ON SOME CALIFORNIA MOTHS. 



BY G. H. FRENCH, CARBONDALE, ILL. 



\rctia Shastaensis Behrens, MS., nov. var. or nov. sp. 



This new form was found by my friend, Mr. James Behrens, of San Fran- 

 cisco, at Upper Soda Springs, Siskiyou County, near Mount Shasta. The 

 hind wings and abdomen are wanting, but the fore wings are present and 

 in a very fair state of preservation. They are black, without light mark- 

 ings on the veins, but marked with yellow as follows: — A very broad 

 transverse stripe, the basal of the usual three found in A. Achala and A. 

 Behrii, as wide as the female of JBehrii, but more regular along its edges 

 and curved more as this stripe is in Achilla., and not extending out on the 

 costa as does this stripe in Behrii; the second of the three usual stripes 

 is absent, save a few yellow scales on the sub-costal vein ; the third is 

 present, but narrow, arcuate, does not quite reach the costa, and only 

 comes a little below the streak along median vein to posterior angle, a little 

 attenuated at both ends ; the usual longitudinal stripe below median vein, 

 not reaching the base as this stripe does in both Achaia and Behrii, but 

 beginning just inside the broad stripe, v/here it almost connects with an 

 outward curved half line inside the broad stripe, that is broad on costa, 

 but narrow below, outside the broad stripe the stripe is narrow, and on 

 one wing broken before reaching posterior angle ; the M-mark present 

 much as in Behrii, beginning on costa midway between stripe three and 

 apex, tliQ first bar of the M curved inward, the other two outward and 

 joined together and to the third stripe, the fourth bar absent as the spur 

 that is usually sent out from the sub-median stripe is here absent. Fringes 

 black ; head, thorax and patagia black. Beneath as above, only paler. 

 Legs black, except inside of anterior femora, which are yellowish. 



