108 THE CANADIAN ENTOMOLOGIST. 



through the loose sand. When finished the hole is usually blocked near 

 the top, and in some cases further down, after which tlie larva retires to 

 the bottom for the winter. 



To a beginner the holes are much like those made by a burrowing- 

 3pider, for which they usually pass. They can, however, be at once 

 distinguished from these by the absence of web at the entrance, and nearly 

 always by the formation of the heaps of sand thrown out. Those of 

  spiders are nearly always in a complete circle, while those of Cicindcla 

 larvae are either in one heap or in two opposite each other. 



The larvae are always enormously abundant in comparison with the 

 beetles, which shows that large numbers must perish, though by what 

 means I am unable to say. 



The beetles are sometimes destroyed in large numbers by badgers. 



The habits of each species, sub-species or aberration follow under 

 separate headings. 



Cicindela fori/iosa, aber, Manitoba, Leng. — The largest of our 

 Manitoba tiger-beetles. This form is not very well differentiated from 

 generosa, and I have specimens of both before me that I am only able to 

 separate with difficulty, though with the average specimen Manitoba is 

 easily distinguished by the broadness of the elytral markings, which in 

 some cases cover nearly two-thirds of the elytra. Some specimens also 

 run rather closely iofortnosa in colour and markings. In newly-hatched 

 specimens tlie anterior portion of the elytra is sparsely clothed with 

 fine hairs. 



These handsome beetles are strong fiiers. They usually inhabit the 

 edges of sandy blow-outs where the vegetation is straggling and far 

 between. The new brood appears about the second week in August, and 

 is overlapped by the old brood to the extent of about ten days. 



Manitoba is among the earlier kinds to commence winter quarters, 

 choosing much the same locality as limbata, but in i)laces rather more 

 sheltered. For depth of liole this form stands out alone. The average 

 depth of burrow from the entrance is 38 inches, in soft sand the depth is 

 about 44 inches. The deepest hole measured was 47 inches, and the 

 shallowest 25. Larv;^ holes that probably belonged to this form were 

 from 30 to 48 inches deep. They v/ere in rather denser vegetation than 

 where the beetles are usually found, but were close to blow-outs inhabited 

 by Manitoba. 



Manitoba has been noted feeding upon Disonyclia (ji/in(/i/n>ittafa, 

 aiid u[ion other Crysomelidce, as well as upon ants. 



