120 PROCEEDINGS OF THE ACADEMY OF [Feb., 



8,600 feet elevation, July 15, one male; Aden, 4,400-4,500 feet ele- 

 vation, July 21, five females. The Cloudcroft male is apparently 

 mature, the remainder being in about the same stage of the immature 

 condition. 



At Aden and in Dry Canyon the species was taken by beating low 

 vegetation, while at Cloudcroft it was captured in a clump of grass 

 under pines and fir. Two females, taken at Fort Wingate, New Mexico, 

 Nov. 4, 1907, and Sept. 9, 1908, by John Woodgate, have also been 

 examined. The range of this form now extends from Nebraska and 

 Colorado south to southern New Mexico and west to southern Cali- 

 fornia. 



PSEUDOSERMYLE Caudell. 

 Pseudosermyle straminea (Scudder). 



This species was present, July 18, in great numbers on rabbit weed 

 on the plain north of the town of Deming and around the dry bed of 

 the Mimbres River. A series of twenty-one males, all adult, and four 

 females in various stages of immaturity was taken on that date. A 

 single male was taken from the same plant on the lower slopes of the 

 Florida Mountains, July 19, while six of the same sex from Aden, July 

 21, and one other male from Dry Canyon, Sacramento Mountains, taken 

 on July 13, are included in the collection. Practically all of the specimens 

 were taken by beating, the insects exhibiting a striking reliance upon 

 their protective form and coloration. When alarmed they held them- 

 selves motionless with legs at stiff angles and, upon experimenting 

 with one of the individuals, this was found to be true when it was picked 

 from the bush, and even when dropped upon the sand it retained its 

 rigidity. 



In size there is a considerable amount of variation, the extremes of 

 the Deming series of males measuring 40.5 and 47 millimeters in the 

 length of the body. The form of the male cerci remains essentially 

 the same, some slight but unimportant variations being present. In 

 coloration there appears to be two types, in the male at least, one olive- 

 greenish, the other greenish-yellow, the whitish lateral lines being- 

 present more or less distinctly in all the adult males seen. The imma- 

 ture females are all yellowish-green, with very faint indications, in one 

 or two individuals, of the lateral lines. 



This species was previously known only from the vicinity of Mesilla 

 Park, Donna Ana County, New Mexico. The range now covers 

 sections of Otero, Donna Ana and Luna Counties. 



Pseudosermyle truncata Caudell. 



Associated with P. straminea on rabbit weed, three males and one 



