io6 Notes on the Tencbrionidcp. [zge 



regions immediately adjacent. Common on alkaline flats beneath 

 any object upon the ground. Immature individuals while the in- 

 tegument.s are yet soft, ascend small plants in the warm sun during 

 the day, undoubtedly to liasten the hardening of the skeleton. 



Cratidus osculans Lee. Common throughout the county. Fre- 

 quents ledges and timbered districts. At Coronado they are plen- 

 tiful in wood rats' nests, and about the roots of Rhus integrifolia. 

 The species is clothed with moderately long hairs of a pale tawnv 

 yellow color. 



Cratidus fuscipilosa Casey. Occurs on the summits of the mount- 

 ains about Julian. Have found them very abundant in ledges and 

 piles of loose rocks. Clothed with long, erect, piceous black hairs. 



Stenotrichus riifipes Lee. Moderately common. Varies greatly 

 in size; the male is frequently a mere pigmy, 5.0 mm. in length, 

 while the female may be 8.0 mm. long. Found beneath bark, de- 

 bris about bushes, etc. 



Cibdelis blaschkii Mann. Inhabits the timbered and mountainous 

 districts. Found beneath the bark of trees. 



Adelina leco7itei Horn. Not common. Sometimes met with in 

 immense numbers under decaying and fungus-covered bark of dead 

 sycamores. A depressed, reddish-ferruginous colored species. 



UIus latus Blais. Rare. Occurs along the San Diego River. 

 Clothed with rather long, moderately slender, recumbent hairs. 

 Elliptical in form and strongly convex.' 



UIus crassus "Lee. Common. Sometimes exceedingly abundant 

 in March along the San Diego River. Oblong-oval in form, clothed 

 with short, robust, dense hairs. 



Blapstinus longulus Lee. Occurs under rocks on the mesas 

 about San Diego. This species has an elongate, parallel, depressed 

 form. The pubescence is short and sparse. The wings are moder- 

 ately well developed, extending nearly to the apex of the elytra. 



B/apsfinus dilatahis^hec. Common, but not abundant. Ratlier 

 evenly distributed. Prefers lowlands and timbered districts. Ob- 

 long in form, pubescence rather stout, subrecumbent, moderate in 

 length. The wings are well developed; flight somewhat labored. 



Blapstinus rufipes Casey. Common everywhere. Frequently 

 pruinose Pubescence fine, rather long, very inconspicuous. Wings 

 rather rudimentary, about two-thirds as long as the elytra. 



