196 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



Callipterus walshii — Monell, Bui. U. S. Geol. Surv., p. 29, 1879. 



MyzocaUis bella (Walsh)— Thomas, Rep. Ent. 111., VIII, p. 

 106, 1880. 



Aphis bella (Walsh)— Thomas, Rep. Ent. 111., VIII, p. 107, 

 1880. 



Callipterus walshii (Monell) — Thomas, Rep. Ent. 111., VIII, p. 



196, 1880. 



Callipterus bella (Walsh)— Thomas, Rep. Ent. 111., VIII, p. 



197, 1880. 



Callipterus bella (Walsh)— Monell, Can. Ent. XIV, p. 14, 1882. 



Callipterus walshii— MowtW, Can. Ent. XIV, p. 14, 1882. 



Callipterus bellus (Walsh) — CEstlund, Aphid, Minn., p. 43, 

 1887. 



Callipterus bellus (Walsh) — Osborn-Sirrine, Proc. la. Acad. Sci. 

 1, III, p. 99, 1893. 



Callipterus bellus (Walsh) — Osborn-Sirrine, Insect Life V, p. 

 236, 1893. 



Callipterus bellus (Walsh) — Hunter, Bui. 60, la. Agrcl. Exp. 

 Sta., p. 89, 1901. 



Callipterus bellus (Walsh) — Sanborn, Kan. Univ. Sci. Bui. Ill, 

 p. 40, 1904. 



Callipterus bellus {V\^?ih\\)—D^\h, Jr. Ec. Ent. Ill, p. 417, 

 1910. 



Callipterus bellus (Walsh) — Morrison, 5th Rep. Ent. Ind., p. 

 216, 1912. 



Callipterus bellus (Wsihh) — Davis, Bull. 111. State Lab. Nat. 

 Hist. Ill, p. 114, 1913. 



This is a rather small, inconspicuous aphid which often occurs 

 in great numbers on the undersides of the leaves of the coast live 

 oak, Ouercus agrifolia, in the southern part of the state. To the 

 knowledge of the writer this species has never before been reported 

 as occurring in California. It has only been collected by S. H. Essig, 

 who first took it at Alhambra, Cal., Jan. 28, 1912, and later at 

 Ventura, Cal., May 27, 1913. The specimens taken were only of 

 the different stages of the winged viviparous female. No oppor- 



