384 
J. B. MALLQCH. 
species in Phytomyza, the great majority of which are slender species. I have 
located atrata in Napomyza, simply on account of its venation, which is, I am 
confident, not a reliable guide to the natural affinities of the species in this 
family, but which is the most readily appreciable, and, at present, the one 
most in use. 
Phytomyza Fallen. 
Tableofspecies. 
1. Acrostichals absent.. subaffinis n. sp. 
— Acrostichals present..... 2. 
2. Glossy black species ; mesonotum with three pairs of dorso-centrals, the an¬ 
terior pair very weak; antennæ with the third joind produced into a short 
thorn-like point at apex on the upper side; small, robust species. 
spicata n. sp. 
— Black species, the thorax with dense gray pollen, abdomen shining black, 
with narrow pale yellow posterior margins to the segments ; 4 strong pairs 
of dorso-centrals on mesonotum; antennæ without an acute apex to third 
joint; larger, slender species. .... affinis Fallen: 
Phytomyza affinis Fallén. 
Dipt. Suec. Phytomyz. 3. 3. (1813). 
A single specimen of this widely distributed species from Taihoku, 
April, 1912. 
Phytomyza spicata n. sp. 
Female: Glossy black. Frons, with the exception of the triangle and 
orbits, opaque black; apex of proboscis yellowish; palpi black. Legs entirely 
black. Wings clear, yellowish at base, veins 1, 2 and 3 brown-black. Squamæ 
and halteres whitish. 
Frons slightly less than one-third the width of head; orbits distinct, 
each about one-third the width of center stripe, 3 pairs of orbitals present, 
the upper pair strong, the others rapidly decreasing in length anteriorly 
and incurved ; triangle well defined, broad, reaching to middle of frons ; 
head, in profile, with frons declevitous, face concave; antennæ inserted 
below middle of profile, small, third joint slightly longer than broad, its 
apex on upper side produced into a slight tooth ; arista tapering, not much 
swollen at base, nearly bare, its length about equal to that of frons ; cheek 
short, about one-third as high as eye, marginal hairs weak, vibrissa well 
differentiated; eye narrowed anteriorly, not round. Mesonotum with 3 
pairs of dorso-centrals, the anterior pair well behind the suture, and very 
