NORTH AMEUICAN DIPTERA. 97 



AIVTHKAX Scopoli. 

 An III rax pertusa Loew. 



The characters accorded tliis species in my paper referred to below 

 will require amending. Througli the kindness of Mr. Samuel Hen- 

 shaw, of the Museum Comparative Zoology, at Cambridge, Mass., I 

 have been put in possession of a sketch of the right wing of the 

 type of this species. This sketch reveals the fact that a very serious 

 error occurs in Loew's original description (Diptera Am. Sept., 

 Cent, viii, No. 18) ; in the fourth and fifth lines from tiie bottom (if 

 the description, for "base of anterior branch of the third vein." 

 read "base of second vein," — the l)rown color not extending to the 

 base of the second submarginal cell. 



The following table contains those species formerly ])laced in 

 Hemipenthes (which, as stated above, is a synonym of Anthrax) as 

 well as several additional species not given in my Revision of this 

 genus (Trans. Am. Ent. Soc. xix, 168-187). Bigot's Anthrax 

 fissus (Ann. Soc. Ent. France, Ixi, 354), is apparently a synonvm 

 of A. disjjar Coq., while his A. bifenestratiis (\. c. 356) appears to l)e 

 the same as A. nugator Coq. 



1. —Wings more or less hyaline at the apex 2. 



Wings wholly blackish brown piillata n. sp. 



2. —Brown of wings does not encroach upon apex of first submarginal cell 4. 



Brown of wings partially or entirely crosses apex of first subTiiarginal cell..3. 



3. — Knob of hal teres and the legs black lateliiiibaf lis Big. 



Knob of halteres and the legs yellowish $«iiiiiosa Wied. 



4. —Brown of wings not reaching base of second submarginal cell, except some- 

 times as a border to the third vein (j. 



Brown of wings encroaches upon base of second submarginal cell 5. 



5. — Brown of wings reaches the hind margin in the fourth posterior cell. 



nielasoiiia Van d. W. 

 Brown of wings does not reach the hind margin in the fourth posterior cell. 



caslaiiipt's Big. 



6. — Abdomen destitute of black tomentum 7. 



Abdomen furnished with black tomentum 10. 



7. — Outline of brown of wings well defined, no brown clouds on veins at bases 



of second submarginal and second posterior cells 8. 



Outline of brown indistinct, brown clouds on veins at bases of secosid sub- 

 marginal and second posterior cell obsciira n. sp. 



8. — Face slightly retreating below 9. 



Face much produced below, tomentum of abdomen pale yellow. 



diagoiialiK Luew. 

 9. — Tomentum of abdomen with a brassy or violaceous reflection, pile of front 



end of thorax black leviciila n. sp. 



Tomentum of abdomen destitute of a metallic reflection, pile of front end 

 of thorax yellow pallidula n. sp. 



TBANS. AM. ENT. SOC. XXI. (13) MARCH. 1894. 



