Coleoptera He 



at least a year; and some of the tunnels were evidently several years old. The 

 tunnels of this species are slender, elongate, winding, more or less longitudinal 

 upon the surface, scoring the wood, then entering the wood through an oval 

 hole to continue below the surface for two or three inches. The pupal period 

 is passed in this tunnel and the adult emerges eventually through a round exit 

 hole. The larvae of this species had evidently been heavily parasitized, for 

 many empty cocoons of a hymenopterous parasite were attached to the tunnels 

 beneath the bark. One dead adult beetle was found in an exit tunnel just below 

 the wood surface. 



Genus Xylotrechus Chevr. 



Xylotrechus undulatus Say. 



Long's Expedition, II, p. 291, 1820; Leng, Ent. Am., II, p. 200. 



Length of the elytra, 1 cm.; width of pronotum, 4 mm.; length of pronotum, 

 3.5 mm.; colour dark brown with the transverse markings yellowish white; 

 pronotum with apical band interrupted only at median line, caudal band feebly 

 indicated on the sides, sides of pronotum grayish from superimposed fine gray 

 hairs; elytra with basal hne feeble, discal spot strong, median transverse line 

 strong and continued along the suture and side margin forward nearly to the 

 base. The subapical transverse line strong complete (this line almost invariably 

 interrupted in the middle in our collection of over 60 specimens) apical marking 

 strong; longitudinal grayish tracings very faint. One specimen below Sandstone 

 rapids, Coppermine river, Northwest Territories, February 15, 1915; F. Johansen, 

 collector. 



One specimen was removed in fragments from tunnels in the wood of a white 

 spruce; it had been working in a dead patch on a living tree. A second specimen 

 found in the same stick is lighter brown, and lacks the longitudinal grayish 

 markings. 



Cerambycid tunnels which may be those of Xylotrechus undulatus are 

 numerous in a part of a branch dying at the time of collection. The surface 

 tunnels are wide and flat, scoring the wood, and filled with frass, freely winding, 

 and very irregular in width. They eventually enter the wood through an oval 

 hole, penetrate to the centre of the branch and continue longitudinally for 

 about two inches. In this last portion the larvae pass the winter. There were 

 no exit holes. 



Monochamus tunnels, probably those of scutellatus, were on the large stick. 

 Two larvse had entered the wood but neither of them emerged. There were 

 no adults in the collection. 



Other Northern Records in our Collection. 



Monochamus scutellatus Say. 



Fort Cudahy, Yukon Territory, 25-VIII-96, W. Ogilvie, collector, Ic?, 1?; 

 Upper Stewart river, Yukon Territory, Jos. Keele, collector, 1881, 1905, 1? ; 

 Rampart House (18 miles south), Yukon Territory, D. A. Nelles collector; 

 Yukon Territory, lat. 62° 31' to 63° 06' N., long. 137° 20' to 129° 30' W., 2 cf's, 

 D. D. Cairnes, collector; Fort Chipewyan, Alta., June 23, 1914, F. Harper, 

 collector; Hudson bay, 1887, J. M. Macoun, collector, 2 9's. 



Pachyta liturata Ky. 



Dawson, Yukon Territory. 



