REPORT OF ENTOMOLOGIST. 
55 
This is one of the handsomest of onr Melanopli and is 
very different from the species of AeolopLus that has been 
supposed to be Dodge’s re gal is. 
This species might easily be mistaken for sanguineous 
Bruner. 
sanguineus Brun. (See description in article following this). A few 
specimens only and all from the south-eastern portion of the 
State. The localities are Holly, Bamar, Bas Animas and 
Rockyford. Dates, July 17th to Sep. 14th (Ball). In general 
appearance closely resembling r eg alls. 
simplex Scudd. Two males have been taken in the Arkansas Val¬ 
ley, one at Holly, Sep. 8, 1898, and one at Nepesta, Aug. 6, 
1900 (Ball). The first measures 17 mm. and the second 19 
mm. Tegmina of male from Holly 8 mm. and of the one 
from Nepesta 13 mm. The latter specimen has blue hind 
tibiae and may belong to glaucipes, but aside from the longer 
elytra and the different colors of the tibiae, and the difference 
in size, the two specimens appear to be identical. This spe¬ 
cies seems a very close relative of glaucipes but in general ap¬ 
pearance, as we have them determined, glaucipes is more 
slender and with the male abdomen nearly straight, while 
in simplex the male abdomen is strongly upturned at the end. 
spretus Uhl. I cannot help suspecting that some of the reported 
occurences of this species have been from specimens of atla- 
nis. During thirteen years of collecting in Colorado, and we 
have done a large amount of it, we have not taken a single 
specimen of this locust. I do not think it can have any per¬ 
manent breeding ground within this State at present. 
tristis Bruner. See description in article following this. 
yarrowi Thom. A single pair were taken at Grand Junction Aug. 
28, 1894. This species looks very much like M. Uavidus 
with hind tibiae red, or like a light colored specimen of M. 
pemoratus without the pale stripes and not so robust. Bengtli 
of male 25 mm. and of female 35 mm. 
PHCETAUQTES Scudder. 
nebrascensis Thom. Another common species on grass land on the 
eastern plains of the State. Its food-plant,so far as our obser¬ 
vations have gone, is blue-grass ( Agropyrum glaucum). 
This specicies is rather late in maturing. On July 16, 1902 
at Ft. Collins many nymphs but no adults were observed up¬ 
on Agropyrum . On July 30th the adults were common. O11 
Aug. 1st, 1901 at the same place it was noted that there were 
many nymphs and a few adults upon blue-grass. The adults 
