26 MISCELLANEOUS STUDIES 



with other species of this genus. Primary sensoria are present on 

 V and VI as usual, and accessory sensoria on VI. There are about 

 seven secondary sensoria oil III (fig. 262), which are more or less oval 

 to circular, and located on the basal two-thirds of the segment. The 

 cornicles, cauda, and anal plate are typical of the genus. 



Measurements: Body length 1.28 to 1.37 mm., antenna total 1.41 

 mm., Ill 0.459 mm., IV 0.306 mm., V 0.264 mm., VI 0.289 mm. (base 

 0.119 mm., spur 0.17 mm.), cornicles 0.68 mm., wing length 2.074 to 

 2.414 mm., width 0.68 to 0.833 mm. The two dusky transverse bands 

 across the fore wings (fig. 263) constitute the most distinguishing 

 character. The branching of the third discoidal is quite variable. 



18. Myzocallis punctatus (Monell) 



Monell, U. S. Geol. Geog. Surv., Bull. 5, p. 31, 1879. Callipterus (orig. 



desc.). 



Clarke, Can. Ent., vol. 35, p. 249, 1903. Callipterus Jiyalinus Monell (list). 

 Essig, Pom. Jour. Ent., vol. 4, p, 762, 1912. M. hyalinus (Monell) (list). 

 Record. Quercus imbricata, Berkeley (Clarke). 



This is a doubtful species, reported only by Clarke from Quercus 

 imbricata in Berkeley. It is the author's opinion that this is the same 

 species listed by Davidson as M. quercus (Kalt.). 



19. Myzocallis maureri Swain 



Figures 55, 56, 266 

 Swain, Trans. Am. Ent. Soc., vol. 44, p. 4, 1918 (orig. desc.). 



Records. Quercus agrifolia, Berkeley (Swain) ; Quercus Icelloggii, Julian, San 

 Diego County (Swain). 



This species has been taken in Berkeley and in the Cuyamaca 

 Mountains of San Diego County by the author. Essig has also taken 

 it in Berkeley. It is never abundant, but the author has observed it 

 several times and in several places in the localities mentioned. 



20. Myzocallis pasaniae Dvdn. 



Figure 57 

 Davidson, Jour. Econ. Ent., vol. 8, p. 424, 1915 (orig. desc.). 



Eecords. Pasania densiflora, Stevens Creek Canyon, Santa Clara County 

 (Davidson), Berkeley, February, 1915 (Essig). 



This is a species found occasionally on tanbark oak in the San 

 Francisco Bay region. The author has never taken it but has speci- 

 mens from Davidson and Essig. 





