20 PEOCEEDIlSrGS OF THE NATIONAL, MUSEUM vol.77 



Described principally from one male (type) and eight females 

 taken in bark of Populus tremuloides at Williams, Ariz., June 4 to 

 11, by E, A. Schwarz and H. S. Barber. 



Specimens are at hand from Beaver Canon, Idaho, July 23 ; Park 

 City, Utah, June 18, and Marquette, Mich., July 26 (all in the 

 Hubbard and Schwarz collection). 



Figure 46 illustrates the dorsum of the prothorax. 



Type and twenty-seven paratypes. — Cat. No. 41402, U.S.N.M. 



ALLANDRUS BIFASCIATUS LeConte 



Allandrus Mfasciatus LeConte, Proc. Amer. Philos. Soc, 1876, vol. 15, p. 396.. 



Described from Canada. Specimens are at hand from Ontario; 

 Buffalo, N. Y. (H. Soltau) ; Marquette, Mich., July 30 (Hubbard 

 and Schwarz) ; Penington Gap, Va., July 8 (Hubbard and 

 Schwarz) ; Cincinnati, Ohio, August 11 (H. Soltau). 



Figure 48 illustrates the under side of the head and Figure 49 

 the female metatarsal claws. 



MECONEMINI, new tribe 

 This tribe is founded on the genus Meconemus Labram and Imhoff.. 



Genus MECONEMUS Labram and Imhoff 



Ischnocerus Schonheer, Gen. et Sp. Cure, 1839, vol. 5, p. 192. Type, infus- 



catus Fahraeus (not Ischnocerus Gravenhorst 1829). 

 Meconemus Labram and Imhoff, Singulorum Generum Curculionidum, 1842, 



vol. 1, No. 40. Type {tuberculatum Labram and Imhofl^) =infuscatus 



Fahraeus. 



extent, covers the intersection of the three townships, hut that the old willow trees from 

 which they were taken are now nearly all gone. Two other specimens in the Casey collec- 

 tion were undetermined, one being from the type locality and the other from the Casey 

 farm, Boston Neck, North Kingston, R. I., July 14, 1888. From these nine New England 

 specimens I can not satisfactorily distinguish four of the five specimens from Edmonton, 

 Alberta (the other is referred to populi), assembled from the Casey, Buchanan, and Frost 

 collections, or the five specimens from Banff Springs, Alberta ; Sisson, Calif. ; Bear Paw 

 Mountain, Mont. ; and Marquette, Mich, (female and male) ; in the Hubbard and Schwara 

 collections, to which varietal rank and a new name had been given in the Pierce manu- 

 script. Another specimen from Garland, Colo. (Schwarz), standing in the Casey collection 

 as Mfasciatus, is also referred here. 



A. populi Pierce. The type set was found on, or in pupal cells in, the bark of quaking 

 aspen in 1901, at which time Mr. Schwarz told of finding the same species on the same 

 host tree in other localities. The 28 specimens which were before Pierce are now further 

 supported by nine more in the Casey collection, adding the localities New Mexico and 

 southwestern Utah (Weidt) ; and one from the Greene collection, representing Colorado, 

 as well as by a specimen in the Frost collection, labeled " Edmonton, Alta., VII. 16, 1920, 

 F. S. Carr." 



It is noteworthy that irevicornia and populi are represented from two localities. From 

 Marquette, Mich., July 26, 1S77, are preserved two specimens, male and female, of hrevi- 

 cornis and seven of populi (these having been recorded as Allandrus Mfasciatus LeConte 

 in the "Michigan List," 1878, Proc. Amer. Philos. Soc, vol. 17, p. 643), and from Edmon- 

 ton, Alberta, July 16, 1920, are two specimens on one pin in the Frost collection, which 

 apparently belong to the two distinct species. These require field evidence of a biological 

 nature to supplement the specific value of the differences in structure of the claws, but it 

 is significant that irevicornis has been found on dead willow (Frost), populi on aspen 

 bark (Schwarz) and Mfasciatus, reared from linden (Champlain). 



— H. S. Baebee. 



