12 THE CANADIAN ENTOMOLOGIST 



NORTH AMERICAN DIPTERA. 



BY J. R. MALLOCH, F.E.S., URBANA, ILL. 



The new species described in this paper were taken during a 

 field trip in connection with an investigation of the occurrence of 

 SimiiliidcB in the southern part of the State of Illinois. The types 

 are deposited in the collection of the Illinois State Laboratory of 

 Natural History. This paper is published by permission of Dr. 

 Stephen A. Forbes, State Entomologist. 



The present opportunity may be taken to draw attention to a 

 curious error which occurs in my paper on SimuliidcE* In the 

 last page proof there appeared a period after the word Simidium 

 in the first caption of the generic table. In making the change to 

 a comma the compositor, evidently by mistake, took out the last 

 line of table instead of last line of caption I, thus causing the same 

 line to appear twice, and deleting the alternative to caption 2, which 

 should read, "Face broad, basal cell absent.... Prosimulium, p. 24." 



Botanobia hinkleyi, new species. 



Female. — Black. Frons reddish brown, slightly obscured by 

 grayish pollen, the anterior fourth pale yellow, surface hairs yel- 

 low; ocellar triangle opaque; face obscure, whitish yellow; antennae 

 brown, the lower portion of third joint, especially towards base 

 and on inner side, yellowish; arista brown; cheeks concolorous with 

 face, obscured with gray posteriorly; clypeus gray; proboscis 

 brown; palpi yellow. Mesonotum black with dense gray pollino- 

 sity, which obscures the surface, with the exception of the areas 

 occupied by four longitudinal vittae, those areas shining; pleurae 

 black, upper half gray poUinose, lower half highly glossy; scutellum 

 slightly gray poUinose, but shining; thoracic hairs brownish yellow, 

 the bristles black. Abdomen distinctly shining, with but slight 

 indications of dusting; surface hairs soft, white. Legs yellow, 

 black on coxa; except their apices, femara except narrowly at apices, 

 the fore and mid tibiae at the middle, the hind tibiae except their 

 bases, and on the apices of the tarsi; surface hairs pale. Wings 

 clear, veins brown. Halteres pale yellow, the stems brownish. 



*Tech. ser. No. 20, Bureau of Entomology, April 6, 1914. 

 January, 191o 



