282 THE CANADIAN ENTOMOLOGIST 



of iV. ivashingionensis were bred from the galls by Mr. Weld, and 

 they are all essentially the same as color, form and sculpture. The 

 types are in my collection and paratypes were deposited with Mr. 

 Weld, and the following institutions: United States National 

 Museum, Museum Comparative Zoology, American Entomological 

 Society, Cornell University and British Museum. 



EXPLANATION OF PLATE IX. 

 Figs. 1, 2, 3. — Galls, natural size. 

 Fig. 4. — Wings, greatly enlarged. 

 Fig. 5. — Antennae of male, greatly enlarged. 

 Fig. 6. — Antennae of female, greatly enlarged. 

 Fig. 7. — Anterior leg, greatly enlarged. 

 Fig- 8^ — Posterior leg, greatly enlarged. 

 Fig. 9. — Ovipositor of female, greatly enlarged. 

 Figures 1-3 were made by Mrs. E. L. Beutenmuller, and figures 

 4-9 by Mr. Lewis H. Weld. 



NEW NORTH AMERICAN DIPTERA. 



BY J. R. MALLOCH, WASHINGTON, D.C. 



The two species of Chloropidae described herewith I had pur- 

 posed including in a larger paper dealing with the whole genus to 

 which they belong, but the carrying out of this project is at present 

 not possible, and I thus present them in their present form pending 

 the possible completion of my work on the different genera of 

 Chloropidae at some future time. The species of Milichiella I took 

 after my paper dealing with the Agromyzidae had gone to the press. 

 The characters given in the description should readily separate it 

 from any described American species of this genus. 



Madiza { = Siphonella) nigripalpis, new species. 



Male and Female: Glossy black. Antennae sometimes brown- 

 ish on the inner surface of third joint; palpi generally black, but 

 sometimes brown. Legs black; fore tibiae entirely, and apical third 

 of mid and hind tibiae as well as entire tarsi on all legs, except 

 apical joint, clear yellow. Halteres whitish. Wings clear, veins 

 yellow. 



Septeniber, 1913 



