1893.] lol [Packard. 



livid blackish, with a dull bluish tint. The sutures are smooth and shin- 

 ing ; hairs reddish brown. The eighth segment is scarcely humped. 



The duration of this stage was about 6-10 days, as it molted the second 

 lime June 10-14. 



Stage III. — Length 14-15 mm. (after second molt). The body is now dis- 

 tinctly deep blue and black ; the two yellow-brown dorsal lines are still more 

 broken up. On the side of each segment the blue contains a distinct longi- 

 tudinal, somewhat pear-shaped black spot, preceded in front by a black dot, 

 like a short, thick exclamation point. The hairs are distinctly §nufi'- 

 brown. A dorsal median row of blue linear stripes, separated by the 

 sutures. 



Rtmarks on Clisiocampa californiea. — In two alcoholic, full-grown 

 larvae, length 36-38 mm., which I collected near Virginia City, Montana, 

 the distinguishing marks are the two irregular, wavy, parallel dorsal fine 

 tawny red lines, which, in my alcoholic specimens, enclose a faint blue 

 median stripe, one on each segment, so that I think my Montana 

 " {1)fragilis " is only a variety of G. californiea. (In the third stage, Mr. 

 Bridgham's figure of the Coloradian specimens, the median blue stripe 

 is very distinct, becoming fainter in the fourth stage.) The parallel, 

 tawny, reddish lines are very irregular, sending otf short twigs and 

 branches, and on the hinder edge of each segment there are short, broken, 

 irregular, subdorsal, tawny-red lines. The body is unusually hairy, the 

 dorsal hairs being tawny reddish. The body beneatli is mottled and 

 irregularly streaked with blackish and paler lines and marks. 



In Stretch's " {'i) fragilis " the two blue spots on each side, and in my 

 specimens, are merged into tiie blue of the side of the body, but in 

 another example they are distinct, and in the alcoholic Montana examples 

 tbey are wanting. I am, therefore, inclined to think that " {1) fragilis " 

 is only a variety of californiea. 



In one alcoholic specimen from Montana, the two blue spots on the side 

 are just as in " (?) fragilis." 



Notes on Variation and on a Variety of Clisiocampa californica. 



The Californian species of Clisiocampa seem to vary more in the larval 

 state than our two eastern species, probably on account of the greater 

 variety of climate, especially G. californica, which occurs in Montana, 

 Colorado, Southern Nevada, and in the lowlands of California, thus ex- 

 tending over a vast region whose physical geography is very much varied, 

 while it has different food plants. It is not improbable that G. eonstricta, 

 in which the hairs and sides of the body are somewhat alike, has been 

 derived from G. californica. 



In a blown larva loaned by Prof. J. J. Rivers, the following remark is 

 written on the label: "Supposed to ditler from G. californica." It is 

 probably only a variety, and allied to a blown larva labeled by Mr. 

 Rivers " Q) fragilis," and kindly lent me by him. The hairs, ochreous 



