112 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Seb. 



in Vallecito, Co., Colorado, April 18, 1919. This species 

 is quite distinct by its almost uniform dull black color. It 

 differs from all our other species except affinis by the great 

 lateral extension of the male genital segment. 



It affords me pleasure to dedicate this interesting form 

 to my friend, Mr. Ralph Hopping, in recognition of the 

 valuable services he has rendered to entomology by his re- 

 searches in forest insects. 



Holotype, male, No. 749, and allotype, female, No. 750 

 Mus. Calif. Acad. Sci. A paratype, male, has been deposited 

 in the Canadian National collection at Ottawa, at the re- 

 quest of Mr. Hopping. Other paratypes are in the Acad- 

 emy's collection. 



Type locality, Vallecito County, Colorado. 



2. Trichopepla pleyto, new species 



Allied to calif ornica but with broader pronotum and finer, 

 concolorous punctures. Length 6 mm. 



Head as in californka, with the cheeks more narrowed at apex and the 

 whole surface more finely evenly punctured. Pronotum broader and flatter 

 than in its ally, its width 2]/^ times its greatest length (two times in cali- 

 f ornica) , surface closely, finely punctured, omitting an irregular, incomplete, 

 transverse vitta between the humeri, the callosities smooth ; sides broadly ex- 

 panded, flattened or slightly reflexed anteriorly, more oblique than in cali- 

 f ornica and slightly more arcuate; scutellum and elytra closely punctate. 

 Antennae, segment II a fourth longer than III and subequal to IV, V longest, 

 II to IV becoming consecutively thicker. Rostrum attaining base of hind 

 coxae; segment II equal to III and IV together; osteolar canal long, flat and 

 obtuse at apex. Male genital segment deeply excavated, its lateral angles 

 truncate ; this sinus in calif ornica more shallow and trisinuate. Whole sur- 

 face clothed with scattering long pale hairs. 



Color, pale testaceous slightly varied with fulvous-brown, most conspicuous 

 being a cloud on disk of corium, a short vitta either side on pronotum, a 

 longer one within the lateral margins, a faint cloud either side on base of 

 scutellum including a pale point, an indefinite vitta either side the pale 

 median line of head and a narrow one within the margins of the cheeks. 

 Usually there is a piceous cloud behind the calli and another on the anterior 

 angle of pronotum. Beneath slightly clouded, but without distinct ventral 

 vitta; tibiae and tarsi a little darker; antennae beyond middle of segment II 

 blackish; membrane hyaline, showing the brown surface of the tergum; con- 

 nexivum indistinctly alternated. 



Described from two males taken at Pleyto, Monterey Co., 

 California, May 21, 1920, one male from Bradley, Monte- 

 rey Co., May 17, 1920, and four from Bryson, Monterey 

 Co., May 19, 1920. The finer, almost concolorous punc- 



