10 E Canadian Arctic Expedition, 1913-18 



Family CERAMBYCIDAE. 



Only four species of this family were obtained in the extreme north including 

 seven specimens in all. 



Genus Criocephalus Muls. 

 Criocephalus agrestis Kirby. 



Fn. Bor. Am., IV, p. 140, 1837; Leconte, J. A. P., ser 2, 11, 36, 1850; Leng., 

 Bull. Brooklyn Ent. Soc., VII, 64, 1884; Blatchley, Col. of Indiana, 1015, 1910. 



One male from the Arctic coast; length, 2.1 cm., width 5.5 mm. at base 

 of elytra, length of elytra 16.5 mm.; width of pronotum 4.5 mm.; length of 

 pronotum 4 mm. The pronotal impressions moderate; the sides narrowly 

 rounded, with only a few rugosities; punctuation close and minutely granulate. 

 The elytra densely punctured and minutely granulate; the two costse rather 

 strongly developed. More densely and coarsely granulate-punctuate than 

 usual, but probably conspecific with the more southern forms. 



Cape Bathurst, Northwest Territories, August 22, 1914, R. M. Anderson, 

 collector, 886; crawling on beach, probably from driftwood which had come 

 down the Mackenzie river or the Anderson river. 



Other northern records: Rampart House, Yukon Territory (18 miles south), 

 D. H. Nelles, collector, 9 specimens; 3 much smaller specimens from the same 

 place may be distinct 14 mm. in length; slender, the pronotum subcircular 

 from above, Dawson, Y.T., VIII, 1909, one specimen. 



Genus Merium Kirby. 

 Merium proteus Kirby. 



Fn. Bor. Am. LV, p. 172, t.s.; f.s. 1837; Mannerheim, Bull. Mosc. Ill, 

 1853, 247; Leconte, J. A. P., ser. 2, II, p. 32; Leng, Bull. Brooklyn Ent. Soc., 

 VII, p. 100, 1885; Blatchley, Col. of Indiana, p. 1019, 1910; Casey, Memoirs, III, 

 286, 1912. 



Three dead specimens of this well known species were taken from the bark 

 of dead white spruce. One specimen has only faint traces of the pale lines 

 on the elytra; otherwise they need no description. 



Coppermine river, below Sandstone rapids, Northwest Territories, February 

 17, 1915, F. Johansen, collector. 



Other northern records: Fort Cudahy, Yukon Territory, August 25, 1896, 

 W. Ogilvie, collector, 3 specimens; Dawson, Yukon Territory, May 17, 1908, 

 1 specimen. 



Genus Neoclytus Thomson. 

 Neoclytus muricatulus Kirby. 



Fn. Bor. Am., IV, p. 177, 1837; Leng, Ent. Am., Ill, 8; Wickham, Can. 

 Ent., XXIX, p. 152, 1897. 



Length, 9 mm.; width, 2.5 mm.; brown with grayish white markings; 

 the pronotum as wide as long. 



Below Sandstone rapids, Coppermine river, Northwest Territories, February 

 15, 1915, F. Johansen, collector; one specimen, taken from the pupal 

 cell in small limb of white spruce. 



The tunnels of Neoclytus muricatulus are numerous on a short dead branch 

 from a living tree. Part of the bark had fallen; the branch had been dead for 



