334 J. a- MALLOCH. 



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 relialjle guide to the natural affinities of the species in this 

 family, but which is the most readily apprecialile, and, at present, the one 

 most in use. 



Phytomyza Fallen. 



T a b 1 e f) f species. 



1. Acrostichals absent snhaf finis n. sp. 



— Acrostichals present 2. 



2. Glossy black species ; niesonotuni with three pairs of dorso-centrals, the an- 

 terior pair very weak; antennte 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 jiosterior margins to the segments : 4 strong })air3 

 of dorso-centrals on mesonotuni: antenn* without an acute apex to third 

 joint : larger, slender species af finis Fallen. 



Phytomyza affinis Fallen. 



Dipt. Suec. Phytomyz. 3. li. (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. Squamse 

 and halteres whitish. 



Frons shghtly less than one-third the wddth 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; antennae 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 w-eak, vibrissa well 

 differentiated; eye narrowed anteriorly, not round. Mesonotum with 3 

 pairs of dorso-centrals, the anterior pair well behind the suture, and very 



