126 THE CANADIAN ENTOMOLOGIST. 



and the first median veins is a large, wide and shallow white lunule, 

 without any scarlet scales ; between the first and second median veins, a 

 scarlet crescent outlined on both sides with black and shaded externally 

 with white ; between the second and third median veins is a small red 

 lunule one-third the size of the last, shaded externally with white. 



The specimen here described and figured has no tails to the 

 secondaries, but, from the appearance of the ends of the veins and the 

 marginal pattern, as well as the presence of a few longer scales at the end 

 of the first median vein, I have no doubt that originally tails existed. 



On the primaries the ovate blotches are bordered on each side by a 

 broad band about two-thirds their own width, and darker than the ground 

 colour of the wings. On the secondaries the series of square blotches is 

 outlined on both sides by an almost black angulated line. Beyond the 

 cell on all the wings is a large dark, oblong quadrate blotch ; the fringe on 

 all wings is dark. Eyes ringed with pearly white ; palpi white, tipped 

 beneath with black ; antennpe black, ringed with white ; club orange 

 below and at the tip. 



Locality. — The type was taken by Mr. E. Firmstone Heath, near his 

 home in the picturesque valley of the Long River, a few miles from 

 Cartwright, in Southern Manitoba. This spot is about ten miles north of 

 the boundary of North Dakota and about 25 miles north-east of the Turtle 

 Mountains. This valley, near Mr. Heath's house, is about a mile wide, 

 and is well-wooded with scrub oaks ( Qiieracs macrocarpa), ash-leaved 

 maples (Acer fiegundo), aspen and balsam poplars ( Populus treinnloides 

 and P. balsami/era), Saskatoon-berry ( Amelanchier alnifolia), while 

 thorn ( Cratcegus coccinea), wolf-berry ( Syinphoricarpus occidefitalis), 

 prairie roses, wild plum (Primus nigra), a few American elms, choke- 

 cherries and various willows. Mr. Heath tells me that it was taken in 

 July about 25 years ago, and, although he has been keenly on the lookout 

 ever since, he has never seen another specimen. It is a remarkable form, 

 and, as will be seen from the accompanying plate, which is an excellent 

 representation, bears very little resemblance to any described species. 



The species of Thecla occurring at Cartwright at the season T. 

 Heathii was taken are T. acadica, T. calanus, T. strigosa, var. liparops 

 and T. titus. The pattern of the under side of the insect here described 

 in no way resembles that of any of these, and I can hardly think that it 

 is a suffused albinic variety of any of them. 



