870 PROCEEDINGS OF THE NATIONAL MUSEUM. 



other at their tips. Plate LVIII, fig. 3, represents the cerci of the 

 male of this species. In immature specimens the cerci are simple, 

 being- merely flattened and slightl}' concave. 



The measurements of these male specimens are as follows: Length of 

 ])ody, 40 mm.; antennti?, 27 mm.; mesothorax, 9.5 mm.; metathorax, 

 including the intermediary segment, 7.5 mm.; fore femora, 13.5 mm.; 

 middle femora, 12 mm.; hind femora, 15 mm.; width of middle of 

 mesothorax, 1.5 mm. 



These Calif ornian specimens are much lighter colored than those from 

 Arizona, and may represent a new species, but without additional 

 material it is not deemed advisable to describe them as such. 



The type specimen was re(;eived at the Department of Agriculture 

 on June 17, 1891. The following note regarding it is quoted from 

 the notebook of the Division of Entomology: 



Rec. from F. W. Anderson, Asst. Ed. Am. Agr., N. Y., 1 specimen, female, of a 

 Diapheromera, new to the collection, received from Los Cabezos, Arizona, with the 

 statement that it is more deadly to stock than loco-weed if eaten by them. It is 

 called in that section " Campo mucho." 



This species, while in general resembling strigata, is reall}" very 

 distinct. The broader supraanal plate with its subtruncate apex, short 

 broad cerci, larger legs and smoother body, will at once distinguish it 

 from that species. 



PSEUDOSERMYLE STRIGATA Scudder. 

 Plate LVI, fig. 3; Plate LVIII, fig. 8. 

 Sermyle Ktrigata ScvDDER, Cat. Orth. U. S., 1900, pp. 14, 94-95, pi. i, fig. 3. 



The author's description is as follows: 



Whole body dull ashy gray. Head furnished above with four longitudinal rows of 

 small tubercles. Whole thorax mesially carinate and also furnished above on either 

 side with a pair of carina, all the carinse equidistant and furnished, as well as the 

 intermediate spaces, with small sparsely scattered tubercles. Abdomen and interme- 

 diary segment similarly marked, but with an additional pair of subdorsal carina? and 

 with fewer and much more obscure granulations, mostly confined to the carinae. 

 Hind femora reaching to the end of the fifth abdominal segment. Abdomen nowhere 

 expanded. 



Length of body, 72 nmi. ; antenna', 30 mm.; mesothorax, 18.5 mm.; metathorax, 

 10.5 mm.; abdomen, 35.5 nun.; hind femora, 22.5 mm.; width of middle of mesotho- 

 rax, 3 mm. 



Three males. Texas, Boll, Lincecum. 



This species appears to fall near ,S'. azteca Sauss., but differs by the carinate thorax 

 with its dull coloring. 



The cerci, as shown in the table of species, are very long, being six 

 times longer than broad. 



