Vol. XXVlii] ENTOMOLOGICAL NEWS. 63 



Locality University of California campus. Berkeley, Cali- 

 fornia. Date of collection, April 5, 1915, and also June 15, 

 1916. Host plant Qucrcus sp. 



Note. Absence of any dusky spots about the thorax and 

 dusky color of the cornicle distinguish this species from its 

 relatives, such as M. discolor, M. bcllus, M. quercifolia and 

 others. 



This species is named after Professor Essig, who has en- 

 couraged and in many ways helped the writer in the study of 

 this group of insects. 



Myzocalis woodworthi n. sp. (Plate VII). 



Alate viviparous female. General color light green. Length of body 

 excluding cauda 1.2 mm. Greatest width of abdomen .5 mm. Wing ex- 

 pansion 3.1 mm. Head broader than long, width, including eyes, .35 

 mm., pale. Tip of beak slightly dusky. Antenna dusky. Length of ar- 

 ticles : III .55 mm., IV .4 mm., V .3 mm., VI .2 mm., spur, 2 mm. Num- 

 ber of sensoria on antennal joints: III, 28; IV, 14; V, 12; VI, 4. Pro- 

 thorax nearly as wide as head, width, .5 mm., length, .3 mm., pale. Meso- 

 and metathorax pale with muscle lobes amber. Mesothorax with a pair 

 of large spines. Width of mesothorax .4 mm. Femora and tibia pale, 

 tarsi dusky. Abdomen pale, with dusky dorsal bands. Bands or mark- 

 ings of this species fade somewhat in mounted specimens. Dorsal tu- 

 bercles on the first and second abdominal segments present as in M. 

 essigi. Cornicles dusky, about .13 mm. long. Style constricted at base. 

 Anal plate distinctly and deeply bifurcated. 



Nymphs with checkered dorsal marking on the abdomen as in M. 

 cssiyi, yl/. maiirci and M. passani. 



Locality University of California campus, Berkeley, Cali- 

 fornia. Date of collection June 20, 1916. Host plant Qucr- 

 cus sp. 



This beautiful aphid is named in honor of Professor Wood- 

 worth, of the University of California, with whom the writer 

 has enjoyed studying for more than eight college years. 



What seems to me M. hyalinus Mon. has been recently col- 

 lected by the writer in this locality, although the spur is almost 

 subequal to the base ; it may be a local variation. The writer 

 has never had an opportunity of seeing any true form of M. 

 hyalinus . This species agrees with Monell's description in sev- 

 eral points. 



