1913] Agromyza and Cerodontha. 329 



Type: Cat. No. 15590, U. S. N. M. 



Locality: Trinidad, West Indies, June, (A Busck). 



Paratypes: Three females. Those are identical with the 

 male in all essential characters. Localities: Mayaguez, Porto 

 Rico, January, 1899 (A. Busck) ; Utica, Mississippi, August 

 (no other data) ; and one specimen taken on flowers of Bige- 

 lovia graveolans, Mescalero, Mexico, October 2, 1896 (T. D. A. 

 Cockerell). Food-plant unknown. 



Williston's description of Agromyza anthrax. 



Trans. Ent. Soc. Lon'd. 1896, p. 430. 



"Agromyza anthrax, n. sp." 



"Male: Black, but little shining. Front very broad, nearly 

 square, its width rather exceeding its length; opaque black, on its 

 lower margin yellowish. Antennas black, third joint rounded, large, 

 pubescent, arista very short pubescent. Face receding, excavated, 

 not at all visible from the sides; cheeks linear, with black bristles 

 along the oral margin, and a rather stout vibrissal bristle in front. 

 Palpi projecting beyond the oral margin, yellow. Mesonotum and 

 scutellum a little shining. Abdomen opaque, oval. Halteres ye) low. 

 Knees and tarsi yellow, the distal joints of the latter brownish. Wings 

 lightly tinged; the third vein terminates in the apex of the wing; 

 penultimate section of fourth vein about one-third as long as the 

 ultimate section of fifth." 



"Length 1_3^ mm." 



"One specimen, St. Vincent." 



Owing to the omission to mention the number of dorso- 

 central bristles in this species, and some other essential char- 

 acters, I cannot place this species in my synoptic table, but in 

 general appearance it must approach very closely to varifrons 

 Coquillett. 



Williston's description of Agromyza innominata. 



Trans. Ent. Soc. Lond. 1896, p. 443. 



"Agromyza innominata, n. sp." 



"Male: Head yellow, a blackish spot at the ocelli; front broad. 

 Antennas yellow; third joint longer than broad; arista finely pubescent. 

 Face short, gently excavated in profile; cheeks rather broad. Palpi 

 elongate, dilated. Thorax obscurely reddish yellow; mesonotum 

 with black hairs. Scutellum large, with two stout, remote, black 

 bristles. Abdomen brown or blackish, yellowish at base. Legs light 

 yellow; hind femora black at the immediate tip. Wings cinereous 

 hyaline; basal cells complete; penultimate section of fourth vein a 

 little longer than the posterior." 



"Length l\i mm." 



"One specimen . ' ' 



"Locality: St. Vincent, West Indies." 



