"Antonio Alzate." 



205 



Margin with shorter white waxy threads, forming a 

 continuous fringe. A. mori arizonensis, Ckll 

 Pupa yellow or yellowish. 



Vasiform orifice bifid posteriorly. A. erigcrontis, Maskell. 

 Vasiform orifice rounded and entire posteriorly... A. ni- 



cotianae, Maskell. 



A. irucheifer, Quaintanee. Discovered by Prof. Townsend 

 in Tabasco. Adult unknown. 



A. acacia;, Quaintanee. Occurs on mezquite. Adult unk- 

 nown. 



A. vinsonioides, Cockerell. Pound by Prof. Townsend in 

 Tabasco. Adult unknown. 



A. mori, Quaintanee var. arizonensis, Cockerell. Differs 

 fron typical mori in having the wings white, marked with 

 black, without any red. Found in Arizona on leaves of 

 orange trees, and by Prof. C. H. T. Townsed at Zapo- 

 tlan, Mexico, July 6, 1902, also on orange trees. The 

 adults were not present in the Zapotlan material, but it 

 is presumed that they do not differ fron those from Ari- 

 zona. 



A. erigerontis, Maskell. On Erigeron at Escalon, discove- 

 red by the present writer. 



(1.) 

 (2,) 

 (3.) 

 (4.) 



(6.) 



(6.) A. nicotiancc, Maskell. On tobacco at Guanajuato, disco- 

 vered by Dr. Duges. In 188!) (Agricolt. Ellenica) Gen- 

 nadius described an Aleyrodes on tobacco from Grece, na- 

 ming it A. (abaci. This was redescribed and figured by 

 Targioni-Tozzetti in 1892, in bis work " Animali ed In- 

 setti del Tabacco in erba e del Tabacco Secco," for the 

 loan of which I am indebted to Dr. L. O. Howard. The 

 pupa is yellow, with longjbristles similar to those of A. 

 tracheifer, but arranged somewhat differently. The adult 

 is sulphur-yellow, with immaculate white wings; eyes 

 not divided. I am inclined to- suppose that this A. taba- 

 ci is the same as A. nicotiancc, in which case the name 



