166 Psyche [October 



Pupa (fig. 4). Length, 4 mm. Pale amber yellow in color. At the anterior 

 end are two prominent cephalad projecting setae; the elongate lanceolate thoracic 

 respiratory organs are yellow. Seven segments may be distinctly seen in the ab- 

 domen, of which the first four are each provided with a curved pointed appendage, 

 on each side ventrally; across the center of the dorsum of each of the first six. 

 abdominal segments is a transverse row of about 38 setulae. The last segment is 

 provided with four stout diverging spines. 



Imago. Male and female. Length, 1.75 mm., without the hypopygium. Palpi 

 pale yellow, face and front metallic blue, in some lights with a greenish tinge. An- 

 tennae amber yellow, arista pubescent. Frontal setae and those of thorax and abdo- 

 men pale yellow. Eyes sparsely pubescent, cilia of inferior orbit pale. Mesonotum 

 and abdomen bright metallic green with bluish reflections, the former slightly 

 pruinose, the latter with yellow hairs; scutellum metallic blue; prescutellar depres- 

 sion shallow; pleura metallic green, darker toward the base of the wings. Tegulee 

 pale yellow with pale hairs. Hypopygium (fig. 6) of the male fuscous, the appen- 

 dages yellow; the basal sclerite which forms the capsule, elongate oval, the lamellae 

 pear-shaped with several conspicuous, pale, setae. Ovipositor of the female fer- 

 ruginous. Legs and coxae pale yellow. Halteres yellowish. Wings hyaline with 

 dusky yellow veins, venation as figured (fig. 5). 



This species is distinguished from T. willistoni, by the structure 

 of the hypopygium. Perhaps the yellow antennas and the wholly 

 yellow cox?e may also be of specific importance. 



SOME ACALYPTRATE MUSCIDiE 1 

 By A. L. Melander 



By an interesting coincidence Mr. J. R. Malloch, then of the 

 United States National Museum, and I made an independent 

 study of the small flies grouped about the Agromyzidae. Mr. 

 Malloch's paper on the genus Agromyza is to appear in the Sep- 

 tember issue of the Annals of the Entomological Society of America, 

 while his discussion of the other genera is to come out in the 

 Proceedings of the National Museum. The first installment of 

 my paper was printed in the September issue of the Journal of 

 the New York Entomological Society, which was received at 

 the Bussey Institution, through the mails, on September 8. The 

 remainder of this article, dealing with the Geomyzina? is to appear 

 in the December issue of that publication. 



The following notes were made on a recent visit to the National 

 Museum and to the Philadelphia Academy of Science, and are 



1 Contributions from the Entomological Laboratory of the Bussey Institution, Harvard 

 University, No. 73. 



