1896.] ENTOMOLOGICAL NEWS. 1 23 



t)chthera mantis Degeer. 



This species is widely distributed over the United States. 

 Specimens from the following localities have come under my 

 notice: Connecticut (S. W. Williston), Wisconsin, Illinois and 

 Nebraska (W. M. Wheeler), Lusk, Wyoming (W. A. Snow and 

 W. M. Wheeler); Little Wind River, Wyoming (W. M. Whee- 

 ler); Douglas County, Kansas (University of Kansas coll.); 

 California ( Raron). Although the color of the face varies in the 

 different specimens — a fact which Loew also observed — they all 

 belong to one species. In some individuals the three ferruginous 

 bands of O. lauta are represented by faint, opaque, brown stripes. 



0. mantis is the largest of our species, many specimens measur- 

 ing 5 mm, 



O. cuprilineata Williston. — The three thoracic bands are me- 

 tallic-violet bordered with cupreous; the middle of the face has 

 a rather low and somewhat wrinkled metallic-green protuberance 

 Avith a depression in its middle, but otherwise the face is smooth 

 and yellow, resembling the face of the preceding species. 



O. tuberailata Loew. — One specimen from Milwaukee, Wis., 

 •agrees well with Loew's description. The polished steel blue 

 outer surface of the upper half of the middle tibia is a character 

 which I do not find in my specimens of O. mantis. The first 

 joint of the hind tarsi is considerably swollen, like that of O. 

 Jaicta. 



The North American species of Ochthera may be tabulated as 

 follows: 



1. Thorax with ferruginous or metallic vittae 2. 



Thorax without, or with very indistinct vittae 3. 



2. Face with impressed black lines radiating from an orbital groove. 



lanta n. sp 

 Face without such impressed lines . cnprilineata Williston 



3. Face with black furrows and dots .... excalpta Loew 

 Face without black furrows and dots 4 



4. First joint of hind tarsi but little swollen . . mantis Degeer 

 First joint of hind tarsi considerably swollen 5 



5 Face broad, tarsi black rapaz Loew 



Face narrow, tarsi red tuberculata Loew 



