202 CALIFORNIA ACADEMY OF SCIENCES. 



middle Sierras. Le Conte describes pilosulus from 

 "Middle California." 



Hypothenemus. H. striatus is recorded from both 

 Lower and upper California, and is therefore undoubt- 

 edly from our district. An undescribed species is fre- 

 quently taken in spring, at Pomona, by sweeping and 

 beating in waste places. 



Xyloterus. X. lineatus, Sylvania, April (Ricksecker). 



Cryphalus. C. terminates is described from California, 

 but is not recognized by any of our authors. 



Xyleborus. Specimens of xylographus have been taken 

 on the wing in spring at Pomona, Pasadena, and Ojai 

 Valley: ccelatus is represented by a single example taken 

 in the San Bernardino Mountains. 



Dryoccetes. D. septentrionis , Sylvania, April (Rick- 

 secker). 



Xylocleptes. X. cucurbitce is widely diffused; the 

 author has taken it at Pomona from April to November. 



Tomicus. T. confusus is moderately common under 

 pine bark, San Bernardino Mountains: plastographus 

 and latidens occur in the middle Sierras. 



Micracis. M. hirtella, Pomona; not common. An 

 undescribed species occurs in Los Angeles County 

 (Coquillett). 



Scolytus. Specimens referred to ventralis have been 

 taken on Douglas Spruce, in the San Bernardino Moun- 

 tains. Specimens have also been received from Mendo- 

 cino County, where they affected the same tree according 

 to Dr. Van Dyke. S. prceceps is reported from Calaveras 

 (Crotch): subscaber is from the north: californicus is 

 without other locality than that indicated by the name. 



