152 THE CANADIAN ENTOMOLOGIST. 



The validity of cxpuUrix as a " species " is still doubtful. I have taken 

 a considerable number of both sexes of expnltrix and cymatophoroides, and 

 while the latter show a considerable variation in the distinctness of the 

 finer markings of the fore wings and in the depth of ground color, the 

 specimens of the former remain always nearly alike and uniform, and never 

 show the black lines of the typical cyniaiopJioroides. Notwithstanding I 

 am inclined to revert to my original opinion that the two are but forms of 

 one species. Since 1863 the typical genus of the grouj:) has been dis- 

 covered in this country. Both the described species of Bombycia are from 

 the Pacific Coast, and are additional examples of the resemblance of our 

 Western fauna with that of Europe. Of one, semicircu/aris, I have seen 

 only the female ; in the smooth abdomen with its single dorsal tuft and 

 the basal i)atch on primaries it resembles Thyatira. In ornamentation 

 and cut of wings it is like improvisa and the European specie's. 



In the present list I leave the genera as formerly recognised, but I am 

 aware that they need more careful study. This cannot be undertaken 

 until fuller material from the Pacific is received. Mr. Hy. Edwards 

 reports expnltrix from British Columbia ; if this locality is correct we have 

 a wide range for this species. I suspect that under the name derasa, the 

 same author reports scripta from Alaska and Victoria. The members of 

 this group seem single brooded, and in New York I have taken scripta and 

 the two forms of Pseudothyatira in May and June at sugar. The larvse 

 await discovery and description. 



Leptina Guenee. 



dormitans Gueji., R. I.; N, Y. 

 ophthalmica Giwi., Wise; N. Y.; Mass. 

 Var. australis. Texas ; Alabama. 

 This form is narrower winged and the markings are more effaced than 

 the type. The black curved mark inaugurating the s. t. line in the type 

 is here straighter, shorter, in one specimen thicker. The black marks at 

 internal margin of the saaiie line are disconnected dashes ; the line itself 

 is interrupted. The basal patch is whitish. This is not improbably a dis- 

 tinct form, but the variations of the species of Leptina are not understood. 



latebricola Grotc. Wise; N. J. 



N. B. — I have only seen one more specimen than my type, which latter 

 is in Coll. Ent. Soc. Phil, and which I have not been able to compare 

 since describing it. 



