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. terminalis is described from California, 

 but is not recognized by any of our authors. 



Xyleborus. — Specimens oi 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): subscaher is from the north: californicus is 

 without other locality than that indicated by the name. 



