1909.] NATURAL SCIENCES OF PHILADELPHIA. 435 



At 5,300 to 5,600 feet on Mt. Lowe the species was found on a steep 

 rock slide and at 4,700 feet it occurred on a steep slope. 



This species has been previously recorded from but two localities- 

 San Diego and Los Angeles, California. 

 Chimarocephala incisa Caudell. 



A single specimen of this species, taken at an elevation of 5,500 feet 

 on the Santa Ana River, San Bernardino Mountains, June 14, by Dr. 

 Joseph Grinnell, has been examined. This individual is quite blackish, 

 with the femoral and pronotal maculations strongly contrasted when 

 compared with individuals from San Diego and Claremont, California. 



We have followed Caudell 9 in using this name for the species usually 

 known as C. pacifica Thomas. 



Encoptolophus californicus Bruner. 



A female specimen of this species was taken among sand dunes at 

 Alamitos Bay, July 31, while one male individual was captured along 

 the Mohave River at Cottonwood, September 9. The Cottonwood 

 specimen is smaller than the measurements given by Bruner for the 

 male sex, the length of body being 15 mm., that of the pronotum 3.3, 

 of the tegmen 13 and of the caudal femur 10, although in almost all 

 other respects the specimen is typical. The lateral carinae of the 

 pronotum are somewhat undulate on the prozona in the male, although 

 nearly straight in the female. Both specimens are in a brownish 

 phase similar to the male type. 



The only previous record of the species is that of the type — Los 

 Angeles, California. 

 Encoptolophus robustus n. sp. 



Type : 9 ; Los Angeles River near Los Angeles, California. August 

 24, 1907. (Otho Poling.) [Hebard Collection.] 



Closely related to E. texensis and subgracilis, differing in the more 

 robust build, more prominent and elevated pronotal carinae, the 

 lateral ones being less divergent caudad than in texensis, in the more 

 excavate f astigium and the more inflated caudal femora. 



This species is not at all close to E. pallidus Bruner, with cotypes of 

 which it has been compared. 



Size medium; form robust though slightly compressed. Head 

 with the dorsum considerably arcuate when seen from the side, 

 though not elevated dorsad of the median pronotal carina, interspace 

 between the eyes rather broad though less than the short diameter 

 of the eye; f astigium as much arcuate declivent as the occiput rises 

 to the interspace between the eyes, subpyriform, slightly longer than 

 wide, rather deeply excavate, a distinct median carina present on the 



» Proc. Ent. Soc. Wash., VII, p. 124. 



