FLIES OF GENUS CONOPS — CAMRAS 175 



Coxae black, white pollinose. Legs brownish. Apex of femora, base 

 of tibae, claws (except tips), and pulviUi yellow. Wings with dark 

 pattern from costa to third vein terminating abruptly at the end of the 

 second vein. First posterior cell entirely hyaline. Apex of submar- 

 ginal cell slightly darkened. Remainder of wing hyaline. Calypters 

 and halters yellow. Abdomen black. Yellow band at junction of 

 segments 2 and 3. Tip of abdomen with very short whitish hairs 

 giving a pollinose appearance. Genitalia black. 



Types: Holotype, male (BM), Xucimaanatlan, Guerrero, Mexico, 

 7,000 ft., July, H. H. Smith. 



Remarks: This specimen was listed by Krober (Ann. Mag. Nat. 

 Hist., ser. 11, vol. 4, p. 467) as abruptusf. 



This species is very similar to ocellatus and sylvosus, but it is immedi- 

 ately distinguishable by having the first posterior cell hyaline. 



Physoconops (jGyroconops) sylvosus (Williston) 



Conops sylvosus Williston, Trans. Connecticut Acad. Arts Sci., vol. 4, p. 329, 1883. 

 Conops arizonicus Banks, Ann. Ent. Soc. Amer., vol. 9, p. 191, 1916. 



The face is black on one specimen (USNM) from Florida (no 

 locality), but I believe it is a melanism. 



Range: United States: Massachusetts to Florida, west to Nebraska 

 and California. Mexico: Baja California, Guerrero, Puebla. 



Physoconops (Gyroconops) ocellatus (Giglio-Tos) 



Conops ocellatus Giglio-Tos, Boll. Mus. Zool. Univ. Torino, vol. 7, No. 132, 1892. 

 Conops parvus Williston, Kansas Univ. Quart., vol. 1, p. 46, 1892. 



Range: Mexico, Brazil. 



Material examined: Brazil: Chapada, 1 male (AMNH, cotype); 

 Nova Teutonia, Feb. 4, 1939, F. Plaumann, 1 male (BM). Mexico: 

 "Hd. R. Piedras Verdes," Sierra Madre, Chihuahua, Aug. 16, Town- 

 send, 1 female (USNM). 



KroeberoconopSf new subgenus 



Similar to the subgenus Pachyconops but having the vertex trian- 

 gular in shape rather than rounded anteriorly and having antennal 

 segment 3 about half the length of segment 2 rather than about equal 

 to the length of segment 2. There is also a slight indentation at the 

 junction of the face and front on the orbital margin which is not seen 

 in any of the other members of the genus. 



Type: Physoconops hermanni (Ki-ober). 



Physoconops {Kroeberoconops) rufipennis (Macquart) 



Conops rufipennis Macquart, DiptSres exotiques, vol. 3, suppl. 3, p. 10, 1843. 



This species is located here on the basis of the one specimen seen, 

 which had been so determined by Krober. The other records of this 



