73 INSECUTOR INSCITI^ MENSTRUUS 



black hairs, sometimes golden ones intermixed. Abdomen 

 dorsally with a median row of white spots, formed by tufts 

 of white pile, extending from the second segment to the last. 



Length, about 11 mm. ; wing, about 11.5 mm. 



Described from 24 specimens. 



Male type and female allotype, Surrattsville, Maryland, May 

 11, 1916, on flowers of Azalea nudiflora (J. C. Crawford) ; 

 paratypes same locality and date (J. C. Crawford) and Belts- 

 ville. May 21, 1916 (L. O. Jackson) ; Hyattsville, Maryland, 

 May, 1916 (W. R. Walton and A. H. Pottinger) ; North Caro- 

 lina and southern Georgia (Morrison). 



Type, Cat. No. 20302, U. S. Nat. Mus. 



This species is readily recognized by its unusually long pro- 

 boscis. It is near varius, but that species is much more robust, 

 its face less produced, the pile on the front coxae black and 

 yellow and the pile between the humeri and wings concolor- 

 ous with the rest of the pile on the dorsum. 



It is very remarkable that this large Bomhylius should have 

 remained undescribed up to the present time, as it may be 

 found in abundance at the proper place and season. It ap- 

 pears to be intimately associated with Azalea nudiflora and its 

 unusually long proboscis appears to be an adaptation to the 

 flowers of this plant. 



Date of publication, July i8, igi6. 



