54 
Psyche 
[June-Sept. 
the same data as Curran’s types, and are associated with a 
female which fits his description perfectly, except that the 
pale pile of the mesonotum somewhat overshadows the black 
pile, and that the color of the mesonotum is more diluted. 
Structurally, the males are the same, the differences being 
color differences, which, in this genus, are unreliable indi- 
cators. The differences are as follows : 
Dorsum of thorax, scutellum, a spot on each mesopleuron 
anterior to the wing base, and metapleura black; tibiae, tarsi 
except the posterior basitarsi, and basal half of posterior 
femora, black; first and second abdominal segments, except 
the apex of the latter, black; the abdomen, therefore, is 
black, with the narrow apices of segments two and three, 
and the posterior angles of four, pale. 
1 female, 3 males, Sa. Emilia, Pochuta, Guatemala, 1000 
m., Feb. -Mar., 1931 (J. Bequaert). 
AcantMnomyia pulcheila, new species 
A handsome species, readily distinguished from the other 
described species of this genus by the hyaline wings, the 
less elongate form, the more sparsely pilose eyes, the lack of 
an area of differentiated pile on the eyes, etc. 
Male. Head entirely reddish yellow, except the occiput 
and the ocellar triangle; the former, however, is broadly 
margined with yellow. Eyes reddish yellow, their pile 
long and moderately sparse, black on the upper, yellow on 
the lower half ; there is no area of longer, thicker pile as in 
the other species of the genus. Antennae yellow, somewhat 
shorter than the head. Pile of head yellow, except for the 
longer, black pile of the vertex, and a fringe of dense, ap- 
pressed, silvery white pile bordering the front and face along 
the inner margin of the eyes. Thorax black, robust, clothed 
with dense, semi-appressed, straw-yellow pile, and, in addi- 
tion, on the dorsum, with sparse, erect, rather long, black 
pile; on the dorsum are four black stripes, lacking the 
appressed pile, which extend from the anterior margin of 
the mesonotum to the base of the scutellum ; the two outer 
stripes end just beyond the outer basal angles of the scutel- 
lum ; the median ones extend onto the disc of the scutellum 
and fuse there. Scutellum and its four spines black, the 
