672 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 49. 



In addition to authentic material named by Scudder from Cali- 

 fornia and the series taken by the writer at Kaslo, British Columbia, 

 the United States National Museum collection contains an immature 



Fig. 12.— PRisTOCEiTTnoPHiLus CELATus. Hind leg of adult male. 



pair from Dmismuir, California, collected July 20, 1906, by Dyar and 

 Caudell and formerly recorded as Marsa pacijica. 



A series of two male and four female specimens of this species from 

 the Hebard collection are labeled ''Glendale, Douglas County, Ore- 



FlG. 13.— PEISTOCEUTHOPHILUS CELATUS. CeeCUS OF 

 ADULT MALE. 



Fig. 14.— PEISTOCEUTHOPHILUS CELATUS. CEECUS OF 

 IMMATURE MALE TiTE. 



gon; altitude, 1,500 feet, August 12, 1909." These were taken in the 

 Rogue River Mountams and regarding them Mi*. Hebard, the col- 

 ector, writes as follows: 



Found in two fir stumps under bark and in the large holes of borers in the slightly 

 damp decayed portions of the sapwood. When exposed some remained motionless 

 while others sprang wildly about and then as suddenly remained perfectly quiet. 

 Such individuals were almost impossible to follow and their coloring made them 

 almost indiscernable on the ground, in this way several escaping. 



PRISTOCEUTHOPHILUS TUBERCULATUS Caudell. 



Marsa tuberculata Caudell, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 79. 



This species, a very distinct one, has not been referred to since its 

 original description in the genus Marsa. The structure of the cerci 



