154 Psyche [Sept.-Dee. 
ties; postocular cilia strong. Palpi small, with the usual bristles 
present, but of small size. Mesonotum rather dull, clothed with 
well developed sparse hairs; much narrowed behind; one pair 
of long, but not stout, dorsocentral bristles. Scutellum with 
two very long bristles. Mesopleura entirely bare. Surface of 
abdomen dull, the hypopygium shining, pollinose along the 
lower part of the sides. Wings hyaline, with a slight brownish 
tinge at the base and with distinct infuscation apically. Costa 
extending to .45 of the wing length; first section more than 
twice as long as the second (27:12). Costal cilia long, rather 
closely placed, fully as long as the width of the costal cell, the 
cilia of the upper series not extending beyond the tip of the first 
vein. Third vein simple; no indication of a fork. Legs rather 
slender, the tibiae all clothed with minute bristly hairs, front 
tibiae with a small, but distinct bristle on the anterior side at the 
basal third; middle tibiae with an anterior bristle at the basal 
fifth and a dorsal one barely farther from the base; with a third 
anterior bristle just before apex. Hind tibiae with four bristles; 
one posterodorsal, at basal fourth and another at apical third; 
one anterodorsal at basal fifth and another before the middle; 
in addition to these there is a dorsal bristle just before tip. 
Halteres piceous. 
Type 8 from Ancud, Chiloe Island, Chile, April 2-7, 1920 
(Cornell Univ. Expedition). 
This is a very unusual species, but agrees rather closely with 
two described by Schmitz from Patagonia. These he has placed 
in a separate group on account of the complete absence of post- 
antennal and lower lateral bristles, long decussate antial bris- 
tles and extensive bristling of the hind tibiae. The present spe- 
cies differs strikingly by the longer second section of the costa 
which is much longer in the male than in males of the Pata- 
gonian forms. 
Megaselia Rondani 
Megaselia (sens, str.) andicola sp. nov. 
8 . Length 1.4 mm. Black; lower portions of pleurae piceous 
or very dark brown; antennae piceous, with the inner surface of 
the third joint yellowish; palpi pale yellow; legs testaceous, 
although appearing darker on account of the black hairy cover- 
ing, coxae darker basally. Halteres pale yellowish brown. Wings 
hyaline, the heavy veins rather pale brownish. Front slightly, 
