The Scottish Naturalist. 275 



The absence from Britain of lineola O. (which may be distinguished from 

 Thau-mas by the unicolorous underside of the hind-wings — the inner margin is 

 fulvous in Thaumas, ) is curious. 



SYLVANUS Esp. Not common, or local. Pascual. 

 Distribution — East. § Forth 000000 



West. Solway §000 

 Lat. 54°5o"-56° Range in Europe. Nearly throughout 

 Type. European. Type in Britain. English. 



Time of Appearance— Imago. June, July. Larva. August-May. 

 FOOD-PLANT. Grasses and Luzula. H. eotnma should occur in Scotland. 



HETEROCERA. 



HEPIALID^3 H.S. 

 HEPIALUS Fab. 

 HTJMUTjI L. Common. Pascual. Ascends to 1200 feet. 

 Distribution — East. Tweed Forth Tay Dee Moray g 

 Orkney Zetland. 

 West. Solway Clyde Argyle West-Ross g 

 Lat. 54°4o"-6o°5o". Range in Europe. Central and 

 northern, except the polar regions. Type. Septentriono- 

 central. Type in Britain. British. 

 Time of Appearance— Imago. June-July. Larva. Feeds for two years. 

 Food- plant. Roots of various low plants (dock, nettle, &c.) 



Var. Hethlandica Stgr. Front-wings of the male more or less 

 yellowish, and more or less marked with fulvous as in the 

 female. 



This form (in Dr. Staudinger's opinion perhaps a distinct species) has 

 occured in Zetland only. I am not aware whether the typical form is found 

 there. The Orcadian humuli—Mr. Traill informs me— is the typical form. 



SYliVlNUS L. Not very common. Ericetal and nemoral. 

 Distribution — East. Tweed Forth Tay Dee Moray goo 



West. Solway Clyde g West-Ross 

 Lat. 54°4o // -57°5o // . Range in Europe. Central and 



northern (except the boreal regions). Type. Septentriono- 



central. Type in Britain.- British. 



Time of Appearance— Imago. July, August. Larva. 

 Food-plant. ? 



