THE CANADIAN ENTOMOLOGIST. 103 



Thorax more than twice as wide at base as long ; sides strongly arcuate ; 

 disk moderately convex ; basal lobe broadly rounded ; finely densely 

 feebly punctate. Scutellum small, broader than long, punctured and 

 cinereo-pubescent. Elytra subquadrate, conjointly at middle as broad as 

 long ; sides distinctly arcuate ; disk flattened, finely striate ; stride finely 

 and feebly punctate ; intervals broad, flat, finely rugosely punctate, each 

 with a series of distant large punctures. Pygidium oblique basally, convex 

 and vertical in apical half; the tip somewhat inflexed ; rather coarsely, 

 sparsely and feebly punctate, uniformly cinereo-pubescent. Hind femora 

 mutic. Apical spur of hind tibiae about one-third the length of the first 

 tarsal joint. 



Length, 2.25 mm. 



One specimen, Havana, 111. *' On the sand, between tufts of bunch- 

 grass at the Devil's Hole, April 9, 19 11." 



This species belongs to group IV of Prof Fall's table, where it would 

 seem to be placed best immediately after kucoso?nus Sharp. The small 

 size of this species, in connection with its entirely black colour, uniform, 

 not variegated pubescence and absence of spots of pygidium, renders it 

 easily recognizable. 



BASILARCBIA WEIDERMEYERll AJSfGUSTIFASCTA, 

 A NEW GEOGRAPHICAL RACE. 



BY WM. BARNES, M.D., AND J. MCDUNNOUGH, PH D., DECATUR, ILL. 



A series of 2 (^ s and 59 s, collected last summer in the White Mts., 

 Arizona, differs from the typical form from Colorado and Utah, as depicted 

 by Edwards (Vol. I, pi. 42), in that the median white band is much 

 reduced in width, and the intersecting veins, especially on the primaries, 

 are more broadly black. This difference is most noticeable in the 9 s, 

 the band on the primaries being distinctly broken up into an irregular 

 row of white semiquadrate spots, of which the third from the costa is 

 greatly reduced in size ; on the secondaries the spots are 7iot broader than 

 long. As this feature is remarkably constant in all the specimens before 

 us, and as, furthermore, we have had for years a ? labelled Arizona in 

 the collection which shows the same peculiarities, we consider a varietal 

 name for the Arizona form warranted ; the extreme form of this race, in 

 which the white band has entirely disappeared, is the ab. sinefascia Edvv., 

 also from Arizona. The males are normal in size, having a wing expanse 

 of 2i^ in. (63 mm.) ; the females are somewhat larger than usual, all our 

 specimens measuring 3 in. {60 mm.). The types are in coll. Barnes. 



