ON A SPECIES OF PSEÜDOCOCCUS(fainily Coccidae). 



FEOM MÉXICO 



The insect here described was sent to me by Professor 

 Herrera, who found it on the Agave, in Quecholac, México, 

 Puebla, in company with Neolecanium herrerae, 



It is easily distinguished from the Neolecanium by its nar- 

 row form, mealy oovering, and well developed legs and an- 

 tennsB. 



On making a mioroscopieal examination, I found that it 

 belonged to tbe genus Pseudococcus Westwood (Dactylopius, 

 Auctt.; not Dactylopius, Costa whicb is Coccus, Auctt.), and 

 could not be separated from the species described by Coqui- 

 llett Dactylopius ephedrae in West American Scientist, Vol. VII 

 (1890) p. 43. In the Colloction of the División of Entomology, 

 U. S. Depaitment of Agriculture, I have examinedtwo shdes 

 of p. ephedrae collected on Ephedra at Acton, California, De- 

 cember 1893, by Mr. Coquillet. These are marked "tipe" which 

 they cannot be, owing to the fact that they were collected 

 three years af ter the description was published, but I am wil- 

 ling to accept them as typical of the species. 



On comparing the antennse of the mexican insect with 

 that of other species of Pseudococcus (Dactylopius), it is found 

 that they agree quite sufficiently well with the Californian P.' 



Memorias.— (1002).— T. XVH. 19. 



