j^4 FKOCEEDIJS'GS OJ TSL 3S'ATI0yAl. MTTSFTM vol.. 71 



MJBGACBILE AT£lCOMA Tacfaal 



Female. — J*sear mouth of Rio Mapiri., Kio Beni, BoliTia, Sept^ember 

 <W, M- hinjm). Vadb-aJ'g type was from Mapiri, Bolivia. The 

 h-'- differs from tjae des' ' ^ in haTing the long hair fring- 



1- . iisin of first abdocoir. .' rnt pale in middle. The robust 



hind t'biae are co%'ered on imaer faee with fine feltlike hair which 

 appears \ • \Vhts. 3ilargin of clypeus uneTen, subden- 



ticuiat-e; . ^ ferruginous beneath; upper part of clypeus 



and supra-cljpeai area polished, sparselr punctured. 



MECACHILE FVEEHOTKICHA CmekiatM 



Fent/de. — Near mouth of Rio Mapiri, Rio Beni, Bolivia, September 

 A' \f Mannj. Described from Guayaq'iil, Ecuador. 



MECACHILE XANTHOLEUCA, m 



FentMe . — Len^h about 10 mm., anterior wing 8 mm. Black, robust, 

 with broad fy(}rdiionn abdomen; face and front entirely hidden by 

 long golden-yellow hair; vertex with long black hair, cheeks with 

 lon^, pure white hair; lower edge of clypeus straight; mandibles 

 blaok; flagellura long, basal half r^iddish beneath; fourth antenna! 

 joint at least twice as long as third; vertex densely punctured; meso- 

 thorax dull and densely puncturexl, scutellum more shining, but finely 

 hud closely pun/^;tijred; dorsum of thorax with erect black hair, scanty 

 on mesothorax, long on hind part of sf;utellum; there is also short, 

 thin, whitish liair, and a band of fulvous on ea^;h lateral margin, next 

 to the t^ala<i; pleura and metathorax with dull white hair; tegulae 

 very dark reddish; wings dusky hyaline, darker at apex, stigma and 

 nervures fusic^tUH; legs bla/:k, claws red with apex black; hair of legs 

 dull white, pale rwidish on inner side of basitarsi; spurs j)ale reddish; 

 abdoi/ien densely punctured, with only traces of white hair bands at 

 sides, on hist segment for/ning large spots; sixth segment in [)r()filo 

 gently concave, with thin, long, dujk hair; v(;ntnil Hi^opa white, a 

 little black hair at extreme apex. 



Cavinas, Rio iicni, Bolivia, January (W. M. Mann). DcHciibcd 

 from one female. In Schrottky's table of Brazilian Hp(«;icHgo^iH ru^ar 

 to M. oadraliH Smith, but is quite distinct; or it could run tKMir the 

 wholly dissimilar M. hartonu Schrottky. In Fiiese's tubh^ it falls 

 jiext to M. hy/jocritu. Smith, which is quite, difbinmt. 



TiiiH-. (Utl. No. li<iOH4, U.S.N. M. 



MVMKVMUM MICItOMOMA < iMk«.«l| 

 Female.- — 'O. KHpciuii/a, Rio I'iMii, mid 'rumupiuiii, I Jnceinbn, mnlr, 

 Kunciiabaque, Rio Beni, ()<'tobe,r. All in Bolivia ( W . M, Mnim). 

 The fejiialo is almont exa<'tly like Af. auniidiitrnniH (!oeluMoll, from 

 Ouatemala, but the mesothorax is not ho thi<kly hain^d. .1/ nurro- 

 HOihd was described from Brazil. 



