302 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



lowing text by TD numbers. The dissections of same that will be 

 figured in the above-mentioned completed paper are noted as/, r. s. = 

 female reproductive system, e. = egg, c^. = chorion, m. = first-stage 

 maggot, and cph. sic. == cephalopharyngeal skeleton of first-stage mag- 

 got. All published references to the forms described are cited in the 

 text under the name employed in the reference, including the TD 

 number when that was given. 



FamUy PHASIID.E. 



Svibfamily- ECTOFH^SIIN"^. 

 XANTHOMELANODES PERUANUS Townsend. 



Xanthomelanodes peruanus Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, 

 p. 128.— TD 3983. 



Length of body, about 5.75 to 6.75 mm.; of wing, 4.5 to 5.5 mm. 

 Numerous specimens of both sexes, Piura, Peru, July 17, 1910, on 

 fohage; October 31 to November 6, 1910, on flowers of Mikania, sp., 

 and noted abundantly on latter through November. 



Head of male deeply golden pollinose, the parafrontals most 

 strongly so ; that of female silvery with a faint golden shade on para- 

 frontals. Occiput ashy, deep golden on upper half in male. Fron- 

 talia velvet-brown; antennae brown. Palpi yellowish, dusky at 

 extreme tip. Only one vibrissa on each side. Thorax deep golden 

 pollinose in male, silvery in female with a faint golden shade on 

 mesoscutum, the usual four velvet-black vittse present. Scutellum 

 whoUy blackish. Abdomen golden pollinose in male, silvery in 

 female, the ground color in both pale yellowish, with brown median 

 posterior triangles on segments two to five, and the shortened first 

 segment wholly brown. The triangles vary, and are sometimes more 

 or less obsolete on the second and fifth segments in the female. Legs 

 wholly blackish. Wings infuscated, most strongly so on costal half. 

 Apical cell closed in tip of wing. Tegulse of male distinctly yellow, 

 those of female faintly so. 



Type.— C^i. No. 15140, U.S.N.M. Female, November 6, 1910; 

 TD 3983,/. r. s. 



Cotype, female, July 17, 1910; TD 3931, e. 



Deposits flat-oval macrotype eggs on host, mthout incubation. 



This species is probably parasitic in the adults of Stenomacra, sp. 

 (near limhatipennis Stal; determined by Heidemann). I have 

 repeatedly found in the abdomen of adults of this lygseid second and 

 third stage maggots which I believe to be this species. The host is 

 exceedingly abundant in the valley of the Rio Piura, onProsopis dulcis 

 and on species of Gossypium, attacking the fruits of both. 



