ORTHOPTERA ACRIDIDAE OED1PODA UNDULATA. 877 



dorsurn, forming right angles with the deflected portion. The metasternum 

 appears to be shorter than is usual in the other species, but I have no male 

 specimens at hand at this time to determine this positively. 



Color fsiccus). The color and markings very similar to (E. trifasciata, 

 except that the middle and outer bands are less distinct, and the middle and 

 apical spaces have a few brown dots in them ; the bands are also of a deeper 

 reddish-brown than the other species. 



I at first laid this aside as a specimen of (E. trifasciata, but in looking 

 at it again the peculiarly flat dorsal surface of the closed elytra attracted my 

 attention ; the tooth at the lateral angle and somewhat elevated occiput ap- 

 pear sufficient to distinguish it as a new species. I have therefore described 

 it as new, naming it in honor of Dr. W. I. Hoffman, who collected it while 

 accompanying the expedition in Arizona. 



OED1PODA TRIFASCIATA, Say. 



Gnjllus trifasciatus, SAY, Ent. ed. Lee., i, 78, pi. 34. 



(Edipoda pruinosa, THOS., Proc. Acad. Nat. Sci. Phila., 1870, 80. 



A few specimens of this widely spread western species were obtained 

 at different localities in Southeastern Nevada, Arizona, and New Mexico. 

 Dr. Brunner de Wattenwyl places this in Sphingonotus, to which (E. Hoff- 

 mann will also have to be referred if he is correct. 



OEDIPODA UNDULATA, Thos. 

 (Edipoda undulata, THOS., U. S. Geol. Sutv. Terr., 1871, 460. 



This species is readily distinguished from closely allied forms by its 

 broad papilioniform wings, which are very distinctly and regularly undulated 

 along the posterior margin. Its general color is an ash-brown; the elytra 

 being marked with minute dusky spots or dots. The wings in the alcoholic 

 specimens are pale yellow at the base; the apical third being more or less 

 dusky. The length of the body is a little more than one inch in the 

 female ; the elytra extend beyond the abdomen about one-third their 

 length. 



Dr. Brunner de Wattenwyl, of Vienna, to whom I sent a specimen of 

 this species, says it is a true (Edipoda as the genus is now restricted, but 

 he thinks it is identical with (E. ochraceipennis, Blanch., a South American 



