1899.] NATUEAL SCIENCES OF PHILADELPHIA. 259 



SOME NOTES ON COCCID^. 

 BY T. D. A. COCKERELL. 



The following paper is the result of some work done in the 

 Division of Entomology, Department of Agriculture, while on a 

 brief visit in the spring of 1899 I am greatly indebted to Dr. 

 Howard and his staff for the facilities and assistance kindly given 



me. 



LLAVEIA Sign. 

 Ann. Soc. Ent. France, 1875, p. 370. 

 Ortonia Sign., Ann. Soc. Ent. France, 1875, p. 367 (not Ortonia Wood, 

 1869 ; nor Ortonia Nich., 1873). 

 Protortonia Twns., Jn. N. Y. Ent. Soc, 1898, p. 169. 



These are all one genus, the species of Avhich, when adult, have 

 normally 11-jointed antennre. I believe it AviU yet be necessary to 

 sink Llaveia as a' synonym of Monophlehus ; especially since Her- 

 rera {La Naiuraleza, 1884) says the cT of Llaveia axin has eight 

 " cerdas terminales " on the abdomen, which I suppose to be the 

 filiform processes of the cf Monophlehus. 



Mounts made by Mr Pergande from topotypes of Ortonia 

 mexicanorum and primitiva show 11 -segmented antennae. The 

 locality of mexicanorum is Mixcoac, not " Misebac." Duges 

 described the antennte of the ? Llaveia axin as 10- segmented, but 

 Herrera declares there are 11 segments. I have only seen the third 

 stage (9 -segmented) and larva. The following table will separate 

 the adults of Llaveia : 



Size very large; length 15 mm. or over 1 



Smaller, length of adult 9 cleared and mounted 7 mm . . .3 



1. Pubescence scanty; length 15-18 mm.; antennas short, seg- 



ments broader than long, except the last, 



Ljlaveia bouvari (Sign ). 

 Pubescence abundant ; length 23-25 mm 2 



2. Legs and antennre reddish; Mexico. . Llaveia axin (Llave). 



Ecuador ; separated by no tangible characters from the last, 

 so far as known ; perhaps identical with it. 



LJaveia uhleri (Sign.). 



