Vol. XXlv] ENTOMOLOGICAL NEWS 307 



stripes or spots. Fringes of wings uniformly whitish. Sexes alike in 

 coloration, but antennae of male blackish, of female yellowish. 



One male from Lincoln, Mass., July 13, 1912; taken by the 

 author from a window of the railroad station ; i male from 

 West Roxbury, Mass., July 15, 1912, taken by Mr. Walter 

 F. Eastman at light ; i female, July 2, 1912, reared by the 

 author from one of a number of caterpillars collected at Con- 

 cord, Mass. 



Type i male, i female, in the author's collection ; i male 

 cotype in Mr. Eastman's collection. 



These albinic forms are undoubtedly inhibition products, 

 the process of coloration of the imago during its last pupal 

 stage probably having been inhibited or arrested by outside 

 influences. Accidentally I happened to spill some chloroform 

 into the box containing several hundred disstria pupae as I was 

 killing the first specimens which had emerged. Since the box 

 was covered with netting and the chloroform was thus allowed 

 to escape quickly, my misfortune did not affect the life of the 

 pupae ; I obtained, however, from these pupae after two days, 

 and then for the next four days every day, one or two ima- 

 gos which were more or less crippled and all of which showed 

 this pale albinic coloration. The one female specimen above 

 described was the only one which developed perfectly. The 

 pupae which gave rise in the field to the two albinic males 

 may have been situated at places little protected from cold or 

 moisture. 



Malacosoma disstria Hb. f. nov. anita (Fig. 7). 

 Wings, antennae, thorax and abdomen uniformly chocolate brown. 

 Two spots in fringes of primaries near apex white, all other parts 

 chocolate brown. Exterior line of primaries faintly visible on both 

 surfaces. Above secondaries are without marking ; on lower surface 

 discal line is narrow, diffused, and of a pale buff color. 



One male, July 2, 1912, reared by the author from one of 

 a number of caterpillars collected at Concord, Mass. 



Type in the author's collection. 



I take pleasure in naming this form after my wife, whose 

 valuable help in rearing hundreds of caterpillars I appreciate 

 very much. 



