184 CALIFORNIA ACADEMY OF SCIENCES. 



Poreospasta. P. polita, from ' 'Southern Coast Range 

 of Gal." (Gabb). 



Nemognatha. The species of this genus are moder- 

 ately numerous on flowers, chiefly Composite, from June 

 until October. There is much variation within specific 

 limits, which renders the proper separation of species 

 difficult. N. apicalis and N. dubia are common on sun- 

 flowers, in September, at Pomona, Pasadena, etc.; two 

 undescribed species occur with them, but more spar- 

 ingly: lutea probably inhabits the Colorado Desert, but 

 I have not yet recognized specimens with certainty: 

 nigripennis is not common; I have seen specimens from 

 Los Angeles, Pomona (May), and the San Bernardino 

 Mountains (5,000 feet elevation), July: scutellaris is very 

 common on low Composite, near Pomona, Pasadena, 

 etc., in June and July: dichroa and piezata are reported 

 from the State, but I have been unable to determine the 

 exact localities. 



Gnathium. 0. nitidum, Owens Valley. 



Zonitis. One example from Barstow is referred to 

 flavida. I have seen a specimen in Dr. Van Dyke's 

 collection of an apparently undescribed species from 

 Southern California. 



Epicauta. I have specimens of alphonsii said to have 

 been collected at or near San Diego; the species was 

 described from Mariposa County: puncticollis, oblita, 

 and straba are found on flowers in the foot-hills in Los 

 Angeles County, from September to November; the first 

 is always common, the second rare, the last is rather 

 rare, though occasionally met with in abundance: fallax 

 is found in Owens Valley: maura, San Diego: maculata, 

 though no locality is named, doubtless occurs only in 

 the deserts of the east or southeast. 



