124 THE CANADIAN ENTOMOLOGIST. 



intermediates being variously tessellated or spotted with white, brown, 

 yellow, and gray scales irregularly intermixed ; the thoracic stripes, the 

 elytral and abdominal spots, and the spots frequently seen on the apical 

 protuberances vary from white to yellow. 



Fetnora. — The internal angle of the sinuation for the tibia is nearly 

 always armed with a minute spine in all the femora, but to be seen in 

 some examples requires close observation, and seems occasionally to 

 be obsolete. 



Contrasted with the European palustris as a whole the American 

 completely harmonizes, while at the same time it is just as variable and 

 might likewise be separated into varieties ; there might be a var. Kirby- 

 afius, a var. geminatus, etc. 



The rostrum, while mostly shorter, with the scape attaining the eye, is 

 occasionally as long as in any of the European examples ; it is usually 

 stouter, more quadrate and with a stronger carina, but these differences 

 are not constant. The thorax in general offers few points, the most 

 noticeable being that the median carina is usually stronger and seldom 

 absent. The elytra while variable individually in regard to the serial 

 punctures, form and punctuation of the elytral intervals, do not differ in 

 these respects from what is seen in the European. The form vestiture 

 and coloration are in no way different. The mesosternum and femoral 

 armature are identical. These two characters with the forms of the first 

 two joints of the funicle are very constant in every variety of both 

 countries and the only ones yet discovered which can claim absolute 

 specific value. 



This species varies in length from .26 to .45 inch. I have taken it 

 in Canada on the willow, and it is said to occur likewise on the aspen 

 (Fopulus). It seems to be the species most commonly met with ; 

 besides the places heretofore mentioned, it is reported from Louisiana and 

 Illinois. 



The question has been asked : With what species did Dr. Leconte 

 compare geviinaius, since colo7i has the tips of the elytra acuminate 

 [Mon. Rync] ? I can only say that it may have been an example of 

 colon with the tips conjointly rounded, which sometimes occurs ; or it 

 may have been capucinus, in which they are habitually rounded and 

 which is labelled colo7i in some collections. Say's geminatus haa a white 

 spot on the elytra. Dr. Leconte's a yellow one. In some collections all 

 examples with the spot white are labelled colon ; all with it yellow 



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