212 CALIFORNIA ACADEMY OF SCIENCES. 



P. inermis belongs to the first section of the genus 

 (elytra without dorsal puncture), and is sufficiently dis- 

 tinct from all described forms to warrant its description 

 in advance of a general revision of the genus. The 

 obtuse hind angles of the thorax with the sides not 

 sinuate before them is a rare character in the genus. 



8. Ccelambus pedalis, sp. nov. 



Kesembles C. medialis but is slightly larger, a little more densely punc- 

 tate, and with the elytra more completely and uniformly infuscate. Pos- 

 terior femora with numerous coarse punctures which outwardly tend to 

 coalesce into oblique rugae. .The claws of the front tarsi are similar in the 

 male, but in this sex the middle tibiae are quite strongly sinuate on the 

 inner side toward the apex. 



Five examples from Pomona and Riverside have been 

 seen by the writer. 



In C. medialis the hind thighs bear the usual line of 

 fine setigerous punctures only. 



9. Ccelambus femoratus, sp. nov. 



Superficially almost exactly like (7. nubilus, but differing from it and all 

 others by all the femora being sinuate beneath near the knee, the margins 

 strongly laminate at apex. The tibiae are pedunculate at base, then sud- 

 denly widened and nearly parallel, instead of gradually widening from 

 base to apex as in all other species examined. 



A single male example collected by Mr. Wickham at 

 Albuquerque, New Mexico, was sent to the writer long 

 ago as C. nubilus. 



The western species of Ccelambus described by Le Conte 

 are very perplexing and unless better characters than 

 those given in the brief descriptions can be found, the 

 number will have to be reduced. In two species, C. 

 masculinus and C. unguicularis, Crotch observed in his 

 vdescription that the claws of the front tarsi in the male 



