22,5 Alexander : Crane Flies from Formosa and Luzon 471 



Male. — Length, 3.1 millimeters; wing, 4.5. Rostrum pale 

 brown, the palpi brownish black. Antenna? short, if bent back- 

 ward not attaining the wing root, pale brownish testaceous, the 

 basal segment darker. Head grayish brown. 



Mesonotum brown, the prsescutum darker brown medially, 

 the lateral margins narrowly whitish. Pleura pale brown with 

 indications of a darker brown, longitudinal stripe. Halteres 

 yellow. Legs with the coxse and trochanters yellow, the poste- 

 rior coxae dark; remainder of the legs dark brown. Wings 

 tinged with brown, the maerotrichiae dark brown. Venation: 

 Vein 2d A elongate, ending far beyond the basal deflection of 

 Cu x . 



Abdomen dark brown, the hypopygium only a little paler. 

 Male hypopygium with the outer pleural appendage slender, 

 slightly curved to the long, acute, black tip; inner appendage 

 complex, before the apex split into two long spines. 



Habitat. — Formosa. 



Holotype, male, Arisan, altitude 7,362 feet (about 2,250 

 meters), August 24, 1921 (T. Esaki) . 

 Erioptera (Erioptera) rogersi sp. no v. 



General coloration pale yellowish white; antennas yellow, the 

 first scapal segment dark; femora pale fulvous with a snowy 

 white ring before the tips; tibiae yellow, the bases narrowly 

 white; wings pale fulvous yellow, narrowly darker along the 

 cord. 



Male.— Length, 4.5 millimeters; wing, 4.6. Rostrum and 

 palpi pale brown. Antennae with the basal segment pale brown, 

 the remainder of the organ light yellow. Head pale cream color, 

 covered with a microscopic white bloom; eyes of male large, 

 contiguous beneath. 



Pronotum and mesonotum almost white, immaculate. Pleura 

 pale yellowish white. Halteres pale yellow. Legs with the 

 coxaa and trochanters concolorous with the pleura; femora pale 

 fulvous, paler at base, immediately before the tips with a 

 narrow, snow-white band which is provided with snowy white 

 setae, the extreme apex narrowly darkened; tibiae yellow the 

 extreme base snowy white; tarsi yellow. Wings pale fulvous 

 yellow with indications of a broad, paler band before the cord, 

 the latter narrowly seamed with darker; veins yellow with tul- 

 vous macrotrichiae, darker colored in the infuscated area. 

 Venation: As in the subgenus, vein 2d A strongly sinuous. 



