346 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



anatomical charactere, can be distinguished at a glance with the 

 naked eye. The sides of abdomen in male are very faintly reddish, 

 this color only apparent on close inspection. The female has the 

 second antennal joint longer in proportion than male. Legs blackish, 

 the anterior femora and tibiaB poUinose on outside. Wings clear, 

 faintly yellowish on extreme base; tegulse white, usually faintly mar- 

 gined with yellowish in female but wholly white in male. 



Type.— Cat. No. 15185, U.S.N .M. Female, April 21, 1911; TD 

 4038, /. r. s. 



Cotype, female, April 21, 1911; TD 4040, cli., m., cph. sh. 



SALMACIA PERUVIANA, new species. 



Gonia, sp. Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, pp. 143-144; Proc. 

 Ent. Soc. Wash., vol. 13, 1911, pp. 15G-157.— TD 4011, 4037. 



Length of body, 10 to 13 mm.; of wing, 7.5 to 9.5 mm. Numerous 

 specimens of both sexes, Piura, Sullana, Lima, Nana (near Lima), and 

 Arequipa, Peru, on flowers of Spilanthes, sp., Flaveria contrayerba, 

 other composites. Polygonum, sp., and on foliage. 



This form, whether species, variety, or race, whether it interbreeds 

 with other forms here given or does not so interbreed, is distinguish- 

 able by the following characters and may best be referred to under 

 the present name. The prevailing color of abdomen is luteous, the 

 hind margin of third segment and the tip of anal segment are blackish, 

 and there is usually a small median marginal blackish spot on second 

 segment. Abdomen and especially thorax and head with pronounced 

 brassy pollen. Front luteous, with the bristles rather sparsely set 

 and usually distinguishable as arranged in not over four rows on each 

 parafrontal, not counting the orbital bristles. Third antennal joint 

 in female is yellowish on base, rest blackish; that of male is wholly 

 black or blackish. 



Type.—Qfii. No. 15186, U.S.N.M. Female, Piura, February 2, 

 1911; TD 4011,/. r. s. (short uterus). 



Cotype, female, Piura, April 21, 191 1 ; TD 4037, /. r. s. (long uterus), 

 e., m. 



Deposits black micro type eggs on leaves. 



SALMACIA PACIFICA, new species. 



Practically same size as preceding. Five females. Nana and 

 Arequipa, Peru; four males, Piura, Lima, and Nana, Peru. On same 

 flowers as preceding. 



Abdomen reddish to dark, sometimes nearly same as in preceding, 

 but the pollen of abdomen and all other parts silvery, especially that 

 of thorax. The sparsely bristly luteous front same as in preceding, 

 and with not over four bristle rows on each parafrontal. Antennae 

 same as in preceding. 



