182 THE COCCIDAE 



Parr, from Mexico on Beloperone; and turgida Ckll. from Florida on 

 Magnolia. 



Akermes Ckll. A genus containing ten species from Mexico, 

 South America, Australia, and India. 



Megasaissetia Ckll. Two species, inflata Ckll. & Parr, from 

 Mexico on "Laurel-tree" and brasiliensis Hemp, from Brazil, are known. 



Physokermes Targ. A genus containing the following five 

 species: coloradensis Ckll. from Colorado on spruce, Pinus; concolor 

 Coleman from California on Abies; insignicola Craw from California on 

 Pinus; piceae Schr. from Europe, New York on Abies, Pinus; taxifoliae 

 Coleman from California on Pseudotsuga. 



Aclerda Sign. There are eleven species included in this genus. 

 The following are recorded from America: ariditalis Ferris from New 

 Mexico on a perennial grass; californica Ehrh. from California, Kansas, 

 New Mexico on Andropogon; obscura Parr, from Kansas on Andropogon, 

 Sporobolus; and tokionis Ckll. from California, Japan on bamboo. Ac- 

 cording to Ferris the marginal spines in californica Ehrh. are acorn- 

 shaped, rounded at the tip in ariditalis Ferris, while the marginal spines 

 appear to be entirely wanting in obscura Parr. 



