278 THE CANADIAN ENTOMOLOGIST. 



cattle it probably lived in the ejectamenta of deer, moose and other wild 

 animals ; only one example of lentus was taken, and that in the forest ; 

 fossor was common, and whether it was originally introduced into America 

 from Europe is not free from doubt — it seems to inhabit the colder and 

 mountainous regions, and in Pennsylvania is not uncommon in the 

 Alleghanies. Raricola and fimetarius were excessively abundant every- 

 where, and seem to follow cultivation. Inquinatus has not as yet appeared 

 in this district. 



Dialytes Ulkei, Horn. Two examples were taken at Sparrow Lake 

 and another at Rosseau, about 50 miles northward. The type of the 

 species was taken at Deer Park, Maryland, and it is not known to me 

 whether it has ever been duplicated. 



Leptura Canadensis, Oliv. Occurred in some abundance ; it breeds in 

 the bark of dead pine trees like Lirographas fasciatus does in that of oak, 

 without entering the wood. All the females seen had the base of the 

 elytra red ; there is no uniformity in the coloration of the outer joints 

 of the antennae of the ? ; the 3rd joint is usually black, with sometimes 

 a pale spot at base ; the 4th is commonly pale at base for half its length, 

 sometimes the lower side is pale for its whole length and the upper black, 

 or again there is merely a pale spot at base ; the 5th is mostly half black, 

 but sometimes with only a pale basal spot ; the 6th may be altogether 

 pale, or with the apex black, or with it spotted on one side or on both ; 

 the 7th is altogether' black, but exceptionally with a pale basal spot ; the 

 8th is altogether pale, with the apex sometimes black ; the 9th is as the 7th ; 

 the 10th is usually pale at base, but sometimes altogether black. The 

 antennae of the $ are black, but in some examples there is a pale spot at 

 the base of joints 6 and 8. These particulars have been entered into to 

 show that antennal colour variation cannot be used to separate into 

 species the variable forms now included in Canadensis. 



Leptura vagans, Oliv. (var. brevis, Kirby). This variety should be 

 placed in our catalogue, inasmuch as it exists locally of a fairly constant 

 type ; that is, with dark elytra with a sulphur-yellow discal vitta on each ; 

 this was absent in one example, which was entirely black. The vagans 

 form has usually yellow elytra, some examples being marked with brown 

 indefinitely. Without notice it requires some research to discover that 

 brevis is vagans. 



Adoxus obscurus, Linn. (var. vitis, Fab). This was beaten in great 

 abundance mostly from willow, though that this is its only food-plant is 



