176 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 



species based on sporadically determined specimens must be verified. 

 The type is in the Paris museum (MHNP) and Seguy informs me that 

 it is from Brazil. 



Range: Brazil, Argentina, Uruguay, Costa Rica? Puerto Rico? 



Material examined: Argentina, 1904, O. W. Thomas, 1 male 

 (BM). 



Physoconops (Kroeberoconops) hermanni (Kroeber) 



Conops hermanni Krober, Arch. Naturg., vol. 81, Abt. a, Heft 5, p. 145, 1915. 

 Physoconops perbellum Krober, Ann. Mag. Nat. Hist., ser. 11, vol. 4, p. 467, 1939. 



Range: Argentina (Mendoza). 



Material examined: Argentina: Mendoza, 1 male, 1 female 

 (cotypes, USNM). 



Subgenus Physoconops Szilady 



This subgenus is characterized by the narrow front, short antennal 

 segment 3, and relatively prominent triangular mark on the posterior 

 margin of the eye. It is more specialized from the primitive Pachy- 

 conops than any of the other subgenera, yet shows more intergradation 

 and is less distinctive superficially. 



Type: Physoconops obscuripennis (Williston) (=brachyrhynchus of 

 Szilady, nee Macquart). 



Physoconops (JPhysoconops) abruptus (Ki-oeber) 



Conops abruptus Krober, Arch. Naturg., vol. 81, Abt. a, Heft 5, p. 144, 1915. 



Range: Brazil (Santa Catarina, Mato Grosso), Paraguay, Argen- 

 tina. 



Material examined: Argentina: Mendoza, 1 male, 1 female 

 (cotypes, USNM). Paraguay: Villarica, Jan. 1939, F. Shade, 1 female 

 (author's collection, ex Sabrosky collection). Brazil: Maracaju, May 

 1937, Shannon, 2 females (USNM); Nova Teutonia, 300-500 m., Jan. 

 25, 1952, F. Plaumann, 1 male, 1 female (author's collection). 



Physoconops (JPhysoconops) gilmorei, new species 



Description: Male: Length lOK mm. Front and ocellar swelling 

 opaque black. Vertex dark brownish. Face opaque black extendmg 

 into a line on the cheeks. Cheeks and facial grooves and anterior 

 orbitals yellow pollinose. Antennae black, segment 3 reddish, seg- 

 ment 2 about 2K times segment 1, segment 3 somewhat longer than 

 segment 1. Arista apparently 2-segmented. Occiput black, yellow- 

 ish below, postorbitals j^^ellow polluiose. Large triangular space at 

 posterior margin of the eye. Proboscis dark brown, about 1% times 



