392 ENTOMOLOGICAL NEWS. [Nov., 'l6 



of the wing a long finger-shaped axillary lobe which is edged interiorly 

 with long black hairs ; second and third costal divisions equal, each 

 twice as long as first; hind cross-vein twice its length from small cross- 

 vein; III 4 plus 5 and V I plus 2 (third and fourth longitudinal) paral- 

 lel. 



Femora and tibiae set with stiff hairs ; femora black usually shortly 

 tipped with ferruginous yellow ; tibiae yellow, broadly black-banded be- 

 yond the middle; tarsi yellow, terminal joints darkened to almost black; 

 middle and hind legs with short tibial spurs. 



Abdomen as stated, that of the $ rounded posteriorly, of the 9 with 

 an extruded hypopygium which is slender, tapering, finely haired, fur- 

 cate and appressed, a long bristle terminating each fork ; lateral and 

 ventral posterior margins of segments gray-edged. 



Average length, dry specimens, $, 2.1 mm.; 9, 2.4 mm.; minimum 

 and maximum of twelve examples 1.9 mm. and 2.8 mm. 



Type locality Mount Eddy, near Sisson, Siskiyou County, 

 California; types $ and 9 , are in the U. S. National Museum 

 (Cat. No. 20318), paratypes with the Academy of Natural 

 Sciences, Philadelphia, and in my own collection. 



Eggs, larvae and puparia were abundant in the plants July 

 26; emergences of the flies took place from July 2Qth to Au- 

 gust iQth ; plants examined September 26th contained many 

 empty puparia, no living early stages, and a single 9 fly, indi- 

 cating probable hibernation in the final stage. 



In the preparation of this paper I am indebted to several 

 entomologists for examination of specimens and courteous 

 reply to my inquiries, and especially to Mr. Frederick Knab 

 and Mr. E. T. Cresson, Jr., without whose generous assistance 

 and criticism its completion would have been most difficult. 



EXPLANATION OF PLATES. 



PLATE XX. 



Metriocncmus edwardsi. Egg mass, male, female head, pupa, male 

 genitalia, labium of larva, male palpus, larva. 



PLATE XXI. 



Botanobia darlingtoniac. Female, egg, head-profile, puparium, larva, 

 cephalopharyngeal skeleton, dorsal view of caudal end of larva. 



Change of Address. 



Mr. NATHAN BANKS, of East Falls Church, Va., Assistant Entomolo- 

 gist, Division of Entomology, U. S. Dept. of Agriculture, since 1896, an- 

 nounces that, after November i, his address will be Museum of Com- 

 parative Zoology, Cambridge, Mass. 



