AUT. 11. FLIES OF THE FAMILY CLUSIIDAE MELANDER AND AEGO. 29 



42. HETEROMERINGIA ANNULIPES Johnson. 



Heteromeringia annulipes Johnson, Psyche, vol 20, p. 99 (1913). — Malloch, 

 Proc. Ent. Soc. Wash., vol. 20, p. 8 (1918). 



"Face and cheeks white, lower part of the front and orbits yellow; 

 upper part of the front, the vertex and occiput black, palpi and anten- 

 nae yellow, apical half of the third joint and arista dark brown. 

 Thorax, upper half of the pleura, scutellum, nietanotum, and abdo- 

 men, shining black; lower half of the pleura, legs and hal teres yellow- 

 ish white; tip of the posterior femora and tibiae annulated mth 

 dark brown. Wings hyaline, apical third, and a small area at the 

 anterior crossvein, and end of the discal cell, slightly clouded with 

 smoky black. Length 3 mm." 



Hahitat.^-The only record is the holotype specimen from Murfrees- 

 boro, N. Car. Type in collection of C. W. Johnson. 



43. HETEROMERINGIA CZERNYl Kertesz. 



(Fig. 20.) 

 Heteromeringia czernyi Kertesz, Ann. Mus. Hung., vol. 1, p. 568 (1903). 



Front and occiput, thorax and abdomen black, face, cheeks, 

 antennae, and mouthparts yelloAvish, arista finely short-plumose, 

 front buccal hair nearly as large as vibrissa; anterior half of male 

 front opaque, appearing white pruinose when viewed from before, 

 front of female shining black. Legs mostly yelloAvish, front tibiae 

 and tarsi and hind tibiae black, middle tibiae brownish, anterior 

 femora of male with rows of strong flexor setae, scarcely developed 

 in female, front tibiae of male less saturate black than of female. 

 Wings infumated, base and central fascia pale, third and fourth veins 

 parallel, sections of fourth vein 2.5 : 1 : 6. Length 3-4.2 mm. 



Distribution. — The species was originally described from Peru. 

 We have fifteen males and twelve females from San Mateo, Costa 

 Rica (P. Schild) and Cabima, Panama (A. Busck). The species is 

 doubtfully distinct from H. Jlavipes, differing only in the darker legs 

 and front. 



44. HETEROMERINGIA FLAVIPES Williston. 



(Fig. 18.) 



Ueteroneura flavipes Williston, Trans. Ent. Soc. Lond., 1896, p. 387, pi. 13, 

 fig. 135 (1896).— CzERNY, Wien. ent. Ztg., vol. 22, p. 101 (1903).— Williston, 

 Manual Dipt., p. 319 (1908). 



Clusiodes flavipes Malloch, Proc. Ent. Soc. Wash., vol. 20, p. 6 (1918). 

 Front brown, red below, the orbits more yellowish, face, cheeks, 

 mouthparts, and antennae yellow, the third joint brownish, arista 

 finely pubescent. Thorax and abdomen black. Legs light yellow, 

 flexor setae of anterior femora of male strong. Wings brownish, 

 the base and central fascia clear, third and fourth veins parallel, 

 sections of fourth vein 2.3 : 1 : 5. Length 3 mm. 



