THE CANADIAN ENTOMOLOGIST. 140 



especially on the dorsum. Dorsal stripe, orange-yellow, whitish at 

 intersegmental folds. Tubercles as before, i. about one-fifth the size of 

 ii., which has a polished base. The lateral band between ii. and iii. is as 

 before, same colour, but not so bright as the dorsal stripe. The skin 

 between iii. and iv. and iv. and v. is also yellowisli, as in last Stage. 

 Bristles from tubercles i., ii. and iii., and mostly from iv., black ; only a 

 few pale rusty bristles from iv.; from v. and lower tubercles the bristles 

 are all pale rusty. Thoracic feet black, shiny; prolegs dark, tinged with 

 dull red. 



The 5 moth which laid the eggs has since been received and labelled 

 by Dr. Dyav '•^Williamsii, van deterj/iinata." It is shown on the plate 

 herewith, as well as a typical ^ . As this Arctian is so common where it 

 occurs, I trust that our western friends will secure eggs the coming 

 season, so that we may get further light on this interesting species. It 

 seems strange that of all the specimens of determmata we have examined 

 (30), only two are females, and these two, if it were not for the additional 

 transverse bar on the primaries, would agree remarkably well with Dodge's 

 figure of Wiliiamsii. 



Distribution. — Kamloops, B. C, Aug. i, bred (Fletcher); High 

 River, Alta. (J. Baird); Calgary, Alta., June 21, 23, July 14, 16, 23 

 (Wolley-Dod); Aug. 7 (Willing); Prince Albert, Sask., July 6 (Fletcher); 

 Alameda, Assa., July 9 (Willing); Carnduff, Assa., July 6 (Willing); Cart- 

 wright, Man., June 21. 29, July 3-15 (Heath); Aweme, Man. (Criddle); 

 Beulah, Man., July i, 6, 15 (Dennis); Elkhorn, Man., July 8 (Fletcher); 

 Ignace, Ont., July 19 (Fletcher); Sudbury, Ont., July 18 (Evans). 



15. Phyllira. — As mentioned, this Arctian is thought by some to 

 be the same as rectilinea. True phyllira has not the veins of the 

 primaries lined, whereas in true rectilinea these are conspicuously lined 

 (see plate). The only Canadian specimens I have seen of phyllira were 

 collected at London, Ont. We have received other records of the 

 capture of this insect in Ontario, but have not seen the specimens, and 

 these records are included on the authority of the collectors themselves. 

 The species is, I believe, southern in its range. The life-history has been 

 published by Packard, and, as previously mentioned, our larvte of 

 rectilinea answered very well to Packard's description of phyllira. 

 Further breeding will have to be done, however, before definite informa- 

 tion can be had regarding both these forms, which now have recognized 

 specific names. 



