NO. 19GG. SYSOPSIS OF XEOTROPJCAL rJMXOBiy.T^—ALEX.WUrCIl. 511 



Wings blackish-siira}^; voiiis with long black hairs; venation (see 

 fig. 12) ; wings metallic in lights. 



Abdomen: tergum black except the gejiital segment, wliich is dark 

 brown; tips of tlio o\npositor yellow; sternum dark brown. 



Ilabitat. — Ilolotype. — Female, Para, Brazil (No. 6316 on slip) (C. 

 F. Baker, coll.). 



Paratype. — Female, Igarape .\ss)i, Parii, Brazil, Jan. 21, 1912. 

 (II. S. Parish, coll.). 



llolotijpe. — In U. S. National Museum collection. (Xo. 14927). 



Paratype. — In Cornell Universitj' collection. 



MQLOPHILUS GUATEMALENSIS, new species. 



General color light grapsh browai; antennse rather short, dark 

 brown ; legs normal. 



Male. — Length, 4.S mm.; wing, 5 mm. Head: palpi and rostrum 

 dark brownish black; antennse dark brown, rather short; front, ver- 

 tex, gense, and occiput uniformly dull gray; liind margin of the head 

 broadly rounded. 



'rhora.x: light grayish-brown; mesonotum: prsescutum with a row 

 of brown hairs on either side of the median line ; pseudo-suture elongate- 

 triangular, dark brown, connected with the lateral margin of the 

 sclerite hy a narrow depressed Mne; tuberculate pits jet black, rather 

 far forward, about midway between the pseudo-suture and the 

 cephalic margin of the prsescutum, closely approximated, the distance 

 between them less than the diameter of either one. Scutirai grayish; 

 scutelluin hght yellowish-browii; post-notum grayish. Pleurae gray- 

 ish-blue, darkest on the mesoepipleurte. Halteres light 3"eUowish- 

 brown. 



Feet: coxaj and trochanters Ught yellowish-brown; femora light 

 brown, darkest apically; tibiae yellowish-browm, tip dark brownish- 

 black; tar^i black. 



Wings: tinged with brown. 



.\])domen: tergum dark brown clothed vnih. long yeno\vish hairs; 

 ■ aha paler, jellow. 



:hitat. — Ilolotype. — Male, Guatemala (probably Guatemala City), 

 • . Am.; Sept. 10, 1902 (G. Eisen, coll.). 

 i'l/pe.— In U. S. National Museum collection (No. 14928^ 



Genus HELOBIA Le Peletier. 



ndobia Le Peletier, Encycl. M6th., lus., vol. 10, 182.5, p. 585. 



■^umplectaUEiQES, Syst. Beschr., vol. 6, 1830, p. 282. 



Idioneura Phiuppi, Verli. Zool.-bot. Ges. Wien, vol. 15, 1865, p. 615. 



Sympkctomorpha Mik, Wien. Ent. Zeitung, vol. 5, 1886, p. 318. 

 In the mateiial from the United States National Museum there 

 were six specimens that I have determined as the almost cosmopolitan 

 species, H. hybrida Meigen. It is very probable that H. macroptera 



