14 KANSAS UNIVERSITY QUARTERLY. 



Five groups circumgenital Four groups circumgenital 



glands. Caudo-laterals 6 to 9, glands. Caudo-laterals 8 to 11, 



cephalo-laterals g to 14. anterior cephalo-laterals g to 14, anterior 



o to 2. (Majority of specimens group wanting, 

 show I or 2 glands in anterior 

 position.) 



The fifth group of glands, greater number of plates and spines, 

 and additional well chitinized incision on margin of anal plate, to- 

 gether with peculiarities of the scale, are differentiations worthy of 

 consideration in forming a specific separation. I prefer for the 

 present, however, to place so///s as a sub species, and have allied 

 it to icsi-i/li on account of similarity in contour of margin of anal 

 plate of female. Later I hope to be able, with A. Juglandis, A. 

 fuglans-regice, var. pnini, var. albiis, var. kafkcB and A. (esculi before 

 me, to establish the exact position of solus. 



Mytilaspis pomorum Bouche. 



The scales longer than measurements given in description, being 

 lYz to 3 mm. Structure of female conforms with tj^pical forms. 

 Found upon the outer branches of two apple trees in one locality. 

 Lawrence, Kans. 



Diaspis snowii, nov. sp. Plate VII, Figs. 31, 32, 33. 



Scale of female. Flat, oval, 2 by 3 mm., exuviae laterad of center 

 on the shorter axis. Scale sometimes more nearly circular and 

 more regular in outline, then exuviae appear to be located nearer 

 margin. Margins ragged. Central portion of scale dark gray, 

 pallid on border, scale very flat approaching margin so tliat the 

 connection between scale and bark is not readily discerned. A 

 very delicate ventral scale. 



Scale of male. White in fresh specimens, orange white in older 

 specimens, i mm. long, narrow, rounded longitudinally, but slightly 

 carinated. Exuviae orange yellow, terminal. Some specimens 

 not tjuite so long and broader. The mature male has not yet been 

 observed. 



Female. Oval, lemon yellow. Anal plate extended but little 

 beyond the general shape, orange, well chitinized. Anal orifice 

 situated at base of aperture between median lobes. 



Circumgenitals, five groups, caudo-laterals 5 to g, cephalo-later- 

 als 8 to 15, median o to 2. 



One pair lobes, notched on outer margin, two incisions on each 

 side showing chitinous processes. 



