1944 ] New Neotropical Phoridce 159 
male which are longer than wide, differing in this respect from 
M. amplipennis Borgm. in which they are widened. From M. 
jurcella End., also with enlarged antennae, it differs by the nearly 
quadrate front and in the disposition of the frontal bristles. It 
resembles several other Neotropical species in the long costa, 
short fringe and the presence of four scutellar bristles. Among 
these it differs from M. opilionidis Borgm. by the bristling of 
the front; from M. brasiliensis Borgm. by the large antennae; 
from M. membranosa Borgm. by the different wing venation; 
from M. parvitergata Borgm. by the absence of the lower pair 
of postantennal bristles. From the common N. xanthina Speiser 
and M. scalaris it is readily distinguished by the enlarged an- 
tennae of the male. 
Megaselia ( s . str.) femoralis Enderlein 
I collected a large series, representing both sexes in the San 
Juan Mountains in southern Cuba. Described from Brazil, M. 
femoralis has previously been taken in Panama and as far north 
as Costa Rica. The present record shows that it extends also 
into the West Indies. In some Cuban specimens the thorax is 
quite brownish above and the abdomen is very pale dorsally at 
the base, with suffused brown on the third to fifth tergites. The 
front may be brownish below, but always shows the highly pol- 
ished steel-blue color above. 
Megaselia ( Aphiochceta ) asthenichaeta sp. nov. 
$ . Length 1.5 mm. Black or very dark piceous, the anterior 
corners of the mesonotum and the anterior part of the propleura 
reddish brown; palpi and antennae entirely black; mesopleura 
and metapleura irregularly stained with reddish brown; wings 
slightly, but distinctly infuscated; veins very dark brown. Legs 
strongly infuscated, especially the middle legs which have the 
extreme tip of the femora and tibiae pale ; trochanter testaceous ; 
front tibiae and base of hind femora yellowish testaceous. Hal- 
teres very light brown. Front narrow, one-fifth higher than 
wide, with distinct ocellar tubercle and unusually deep median 
frontal groove. Four postantennal bristles, the lower pair close 
together as usual ; upper and stronger pair widely separated, as 
far from the median line as from the eye-margin, placed slightly 
higher than the antial bristles which are directly below the 
lowest lateral bristles, next to the eye and at the lateral angle 
