180 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



One male, similar to the holotype, but face partly yellowish. The 

 dark areas darker. Abdominal segment 2 nearly black. Second 

 antennal segment 2}^ times the first. One specimen (abdomen miss- 

 ing), similar to the holotype, but face partly dark reddish. Second 

 antennal segment 2)2 times the first. One male, similar to the holo- 

 type, but with black areas darker and abdominal segment 2 more 

 brownish. Face partly yellowish, along the grooves. Facial gi"ooves 

 and anterior orbits quite dark beneath the pollen. Second antennal 

 segment 2% times the first. One male, similar to the holotype, but 

 front and vertex reddish (teneral?). Face reddish. Facial grooves 

 blackish, below the yellow pollen. Black areas darker, especially 

 tarsi; black of wings paler. One male, similar to the holotype, but 

 black areas much darker, more extensive. Face very black in appear- 

 ance due to dark under pollen of orbits and facial grooves. Abdomi- 

 nal segment 2 black. 



Types: Holotype, male (USNM 62430). Allotype, Maracaju, Mato 

 Grosso, Brazil, May 1937, R, C. Shannon. Paratypes: BrazU: 2 

 males, 1 female, 1 (abdomen off), same data; 1 male (USNM), Rio 

 Claro, Sao Paulo, July 1939, Claretiano; 1 male (author's collection), 

 Nova Teutonia, Oct. 21, 1951, F. Plaumann; 1 male (author's collec- 

 tion). Nova Teutonia, Dec. 9, 1951, F. Plaumann. 



Remarks: One specimen (USNM) from Brazil (Maracaju, May 

 1937, R. C. Shannon), is referred here but may represent a new species. 

 It is much larger in size (14 mm.), the face is dark yellowish, more 

 distinct from the black of the front, and the cheeks have the dark 

 area narrower. Antennal segment 3 is reddish brown in more con- 

 trast with the dark segment 2. The black pattern of the wing fills 

 the submarginal cell completely and extends partly into the first 

 posterior cell in the proximal half. 



This species is related to discalis, differing immediately by the 

 absence of pollinose bands on the abdominal segments. The first 

 basal cell averages darker than in all the other species of this group. 



Physoconops (Physoconops) aureoscutellatiis (Krobcr) 



Conops aureoscuiellatus Krober, Stettiner Ent. Zeit., vol. 98, p. 96, 1937. 



This species has not been seen but presumably it belongs here. It 

 was described as being similar to angustifrons except for the yellow 

 scutellum. 



Range: Costa Rica. 



Physoconops (Physoconops) discalis (Williston) 



Conops discalis Williston, iyi Godman and Salvin, Biologia Centrali-Americaiia, 



Diptera, vol. 3, p. 80, 1892. 

 Conops formosus Krober, Arch. Naturg., vol. 81, Abt. a, Heft 5, p. 124, 1915. 

 Conops brachyrhynchus var. semifuscus Banks, Ann. Ent. Soc. Amer., vol. 9, p. 192, 



1916. 



