—13— 

 the penultimate segment. Plates forked, two laterad of each 

 incision. 



ASPIDIOTUS AESCULI JohnS. 



Johnson. W. G., Bull. 111. State Lab. Nat. Hist., Vol. IV. pp. 

 386-88. IS'.Ki. 



Female scale circular, about 2 1-2 mm. in diameter, 

 dirty gray, with exuviae subcentral, orange red. 



Female anal segment with median lobes well developed, 

 often slightly notched or indented on outer margin, not 

 notched on inner margin; second lobes slightly developed on 

 inner angle; third lobes practically obsolete. First incision 

 marked; second incision no more than an inward curve of mar- 

 gin. Inner chitinous process of first incision slightly largest.* 

 Plates simple, one just laterad of median lobe and two be- 

 tween inner angles of second and third rudimentary lobes. A 

 pair of spines from each median, second and third lobes and 

 one from lateral margin. Ventral grouped glands; median, 

 none; cephalolateral, five to seventeen; caudolateral, four to 

 eleven. Curious club shaped thickenings are present, around 

 which the glands are grouped. 



Habitat: Buckeye, Acscuhis californica, at Stanford 

 University, Cal. (Johnson.) 



ASPIDIOTUS AESCULI Johus. sub. sp. SOLUS Huutcr. f 



Hunter, S. J., Kan. Univ. Quarterly, Vol. VIII, p. 13. Jan. 1899. 



Scale circular, 2 1-2 to 3 mm. in diameter, dark gray, 

 much darker in center than at margin; exuviae subcentral, 

 dark in color. 



The female anal segment differs materially from that of 

 aesciili. Median lobes similar to those of acsculi. Two 



*Specimen.s of this species have not been obtainable for examination. However 

 as Prof. Johnson's description says nothing of chitinous processes around second 

 incision and as thej' are not figured, it is to be inferred that they are absent. 



tThis form differs so materially from ae,»cu\i that it seems as if its characters 

 might almost be considered of specific importance. 



