ENTOMOLOGICAL, NEWS. 



[Feb.,'i8 



Hercostomus unicolor Loew. 



Dr. J. C. Bradley took two males at Blue Lake, Humboldt 

 County, California, and a female which seems to belong to 

 this species in Colorado. I took both males and females at 

 Kearney, Ontario. Loew described it from Hudson Bay, and 

 Wheeler from Wisconsin. 



Asyndetus appendiculatus Loew. 



Dr. J. C. Bradley took a male of this interesting species 

 at St. Petersburg, Florida, August 10, 1910. Loew described 

 it from Rhode Island. 



Tachytrechus laticrus Coquillett (Figs. 3, 4). 



$ Length 5.5 mm. Face covered with yellow pollen which gives 

 it a velvety appearance, rather narrow in the middle; palpi and pro- 

 boscis black; antennae wholly yellow, third joint rather small, slightly 

 pointed; arista black, dorsal, with a small lamella at tip, about as 

 long as the height of the head; front black, dulled with yellowish 

 pollen; ocellar tubercle prominent with two large bristles; orbital cilia 

 black. 



Thorax metallic black with bluish reflections on the dorsum, shin- 

 ing but dulled with brown pollen on the dorsum and silvery pollen 

 on the pleurae: this white pollen extends along the front over the 

 humeri but is interrupted before reaching the acrostichal bristles, these 

 bristles small but forming two close set rows which reach a little be- 

 yond the middle of the dorsum; scutellum black with a slight de- 

 pressed, pollinose space on each side, leaving a flat, shining, raised 

 space in the center. 



Abdomen metallic greenish black with considerable white pollen on 

 the sides; hypopygium rather large, black, shining on the inner -jide, 

 covered with whitish pollen on the outer surface; lamellae nearly 



Fig-. i.Parasyntormon lepns sp. nov., antenna. 



Fig. 2. Hydrophorus cnriiipes sp. nov., fore leg. 



Fig. 3. Tachytrechus laticrus Coq., fore tibia. 



Fig. 4. " " Coq., fifth tarsal joint of fore loot. 



