170 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lo 



distinct gold poUinose pleural stripe. Postnotum gold poUinose " 

 dorsally and laterally. Coxae gold poUinose on black. Femora 

 reddish, posterior blackish. Tibiae yellowish proximally, dark reddish 

 distally. Tarsi blackish, yellowish on segment 1. Pul villi and claws 

 except tips yellow. Wings with brown pattern extending to fifth 

 vein and vena spuria, the costal cells and first basal cells more yellow- 

 ish. Remainder of wings hyaline except along fifth and sixth veins. 

 Calypters and halters yellow. Abdomen black with a wide distal 

 gold pollinose margin on segments 1-4. Segments 5 and 6 nearly 

 entirely gold pollinose. Genitalia dark reddish. 



Female: Length 13 mm. Similar to the male. Antennal segment 2 

 twice length of segment 1 and slightly longer than segment 3. Pos- 

 terior femur as reddish as the others. Basal cells of wing nearly 

 hyaline. Theca long and robust, entirely black except slight yellow- 

 ish tip. 



Variation (in paratypes): Length 13 to 14^2 mm. Legs paler in one. 

 In the other specimen, posterior femur as reddish as the other femora, 

 abdominal segment 2 yellowish laterally, genitalia nearly entirely 

 black. 



Types: Holotype, male (F. Johnson collection, AMNH), Rabinal, 

 Guatemala, 3,000 ft., July 2, 1947, C. and P. Vaurie. Allotype 

 (author's collection), Tehuacan, Puebla, Mexico, June 23, 1951, P. D. 

 Hurd. Paratypes: Mexico: 1 male (USNM), Isthmus of Tehuan- 

 tepec, Sumichrast, 1 male (UCB), Lagunilla, Hidalgo, June 14, 1951, 

 P. D. Hurd. 



Remaeks: This species combines characteristics of both exisus and 

 townsendi {=auratus). Populations located between the ranges of 

 excisus and townsendi (=auratus) may also resemble this species. 

 Krober (Arch. Naturg., vol. 81, Abt. a, Heft 5, p. 139, 1915) identified 

 this species and intermediates between excisus and townsendi 

 {=auratus) as auratus. At this time it might be weU to comment on 

 some other identifications by Kjober iu that paper. His gracilis (p. 

 139) consists of rujus and townsendi {=auratiLs). His xanhthopareus 

 is gracilis (p. 135), and he renamed xanthopareus {=hrachyrhynchus) 

 as JenestratiLS (p. 134). 



The records of gracilis from Chile, therefore, belong to ruJus. His 

 record of excisus from Mexico probably belongs to connectens. Some 

 of the specimens from Texas and Kansas that he lists as excisus and 

 auratus probably represent intermediates between excisus and town- 

 sendi (= auratus). 



Physoconops {Pachyconops) townsendi, new name 



Conops auratus To^vnsend, Trans. Amer. Ent. Soc, vol. 27, p. 161, 1901. (Pre- 

 occupied by Conops aurata Walker, 1871.) 



