26 THE CANADIAN ENTOMOLOGIST. 



frequents. Ceutorhynchus, Pelenomus, Coelogaster and Rhinoncus occur 

 under similar conditions, and also in moss obtained from such localities 

 in the fall. 



Centrinus rectirostris Lee. may be found in June, in wet localities, 

 upon Club-rush ( Scirpus eriophorum), and about the middle of the month 

 the beetles are abundant and are often seen in copulation, or depositing 

 their eggs in the lower portions of the stems. The larva is a moderately 

 stoutish white grub about one-quarter of an inch long, with a brownish 

 head, the sutures of which are whitish. The burrow sometimes goes down 

 nearly to the root, and extends upward several inches. The larva generally 

 winters in the upper part of the burrow so as to be safe from the spring 

 flooding of the ground, and about May transforms to the pupa; the 

 time of the change and the duration of this stage being probably largely 

 dependent on the weather. Some years the grubs are extremely abundant 

 and scarcely a stem of the Scirpus in some localities is without its 

 occupant. It is very rarely, however, that more than one grub is found 

 in a stem. 



Centrinus prolixus Lee. is common some seasons upon sedges and 

 aquatic plants, but the habits of the larvae are unknown to me. 



Sphenophorus pertinax Oliv. lives in the lower portion of the stem of 

 the Cat-tail Flag ( Typha latifolia), and its larva and that of the moth 

 Arzama obliquata often inhabit the same stem. 



Stetioscelis brevis Boh. has been taken on oak, as well as on some of 

 the trees named by Mr. Chittenden (Ent. Am., Vol. VI., p. 99), and my 

 observations of its habits fully confirm his statement that it bores only in 

 standing timber denuded of bark. 



Cossonini. Two specimens of a small species were obtained at 

 Sydney in 1884 under the bark of a dead spruce. I am informed that 

 Dr. HoTn has the same species from Mass., but it is not described. A 

 species of similar size, but belonging to another genus, occurs here, also 

 under the bark of spruce. 



Dryocceies affaber Mann, has been observed boring in terminal shoots 

 of the branches of large white pines, and the cones and twigs (the former 

 chiefly) of the red pine are much infested by this species or septentrionalis 

 Mann. The attacked cones may be easily recognized by their stunted 

 and shrivelled appearance, they seldom exceed the size of an acorn. 

 Several larvae may be found in one cone, and the beetles seem to spend 

 the greater part of their time burrowing in the cones, as I kept a lot of 



