OF NORTH AMERICA. • 22T 



tubercles same color, but surrounded by a large black spot, which 

 gives a general black color to the whole body. The white spots are 

 between the upper rows of lateral tubercles." 



The larva from which the above description is drawn, was found in 

 October. 



This species is very widely distributed over the United States, rang- 

 ing from Canada to Texas. Boisduval enumerates it in his list of 

 Californian Lepidoplera, but it is very doubtful whether its range entends 

 as far westward as the Rocky Mountains, if so far. I do not find any 

 record of its occurrence in Colorado Territory, and it is yet an un- 

 known species to California entomologists. Several other eastern spe- 

 cies are stated by Boisduval to occur in California, which have not oc- 

 curred here since the date of his earlier writings on the Lepidoptera of 

 this coast, although they are among those of most frequent occurrence 

 in the Atlantic States, and I am led to the conclusion that some errors 

 of locality must have crept into his descriptions. 



M. J. Akhurst of Brooklyn, N. Y., informs me that he usually finds 

 the imago in open pastures, somewhat bare of vegetation. 



16.-ARCTIA SUPERBA. N. S. (Pi. 9, fig. 12). 



5 . — Front black, vertex pale cream color, with a black spot on the 

 occiput. Palpi black. Antennae brown. Thorax hairy, black ; 

 patagia pinkish cream color, with a broad black dash in each. Abdo- 

 men cream color, darkest above, with a broad black dorsal stripe, and 

 mixed black and pale hairs at base ; a double ventral row of black 

 spots, and faint traces of a lateral row of black dots. Breast hairy, 

 black ; yellow between anterior coxse. Legs cream color, marked with 

 black. 



Anterior wings rich brown-black, with cream colored markings and 

 fringes. A narrow longitudinal streak, furcate at outer margin ; an 

 oblique sub-basal band, not seen below the longitudinal streak ; a 

 broader median transverse band, wide to the longitudinal streak, nar- 

 rower below and curving toward base. A spot on the costa between 

 these bands. A second, outer, sinuate, narrower band, very approxi- 

 mate to the median band on the longitudinal streak, but not united to 

 it, and appearing only very faintly below the longitudinal streak. The 

 usual arctian terminal band is very narrow, its outer angles not touch- 



