266 THE CANADIAN ENTOMOLOGIST, 



Ent., No. 7196). This is related to the sub,2;eniis Chrysomphalus, and 

 comes nearest to A. persece, Comstock. It resembles A. mitnosx in some 

 respects, but the tubular glands are much longer than in that species, or 

 in sviilacis. The scale might be taken, at a superficial glance, for 

 amantii, didyospermi, or one of the uvx group, all of which are quite 

 different structurally. 



(2.) AspidioUis ( Hemiberlesia) tricolor, n. sp. — $ scales 12-3 mm. 

 diam., crowded on twig, approximately circular, very little convex, white 

 with a brownish stain ; exuviae central or sublateral, covered by a film of 

 secretion, appearing as a blackish spot ; first skin in many examples 

 uncovered, black or dark brown ; second skin rarely uncovered, deep 

 orange. Removed from the twigs, the scales leave a whitish film, quite 

 conspicuous. 



9 . — Circular, orange-brown. Only a single pair of lobes, these very 

 large, entire, broad and low, much broader than long, gently rounded at 

 ends, shaped like the end of an axe blade ; separated by a pair of well- 

 developed spinelike plates. On the margin cephalad of the lobes is a 

 group of five more or less serrate spinelike plates ; then come three very 

 short spinelike plates, after which the margin is more or less, irregularly, 

 crenate. Anal orifice large, oval, distant from bases of median lobes less 

 (sometimes a little more) than its own length. No groups of ventral 

 glands. A {tff oval glands marking the lines of the obsolete segments. 

 Two small saccular incisions with thickened edges on each side, one 

 immediately laterad of the median lobe, the other cephalad (or laterad) of 

 the obsolete second lobe. 



Hab. — Salina Cruz, Mexico, May 29th (Townsend : Div. Ent., No. 

 7193). Distinguished by its very broad entire lobes, and the orange 

 second skin. It will form with A. rapax, Comstock, and A. ulmi, W. G. 

 Johnson, a little group, to which the name Aspidites is applicable, thus : 



Subg. Aspidites, Berlese and Leonardi, 1896, s. str. — Scale white or 

 whitish, no groups of ventral glands, only one pair of lobes. 



Exuviae black or at least very dark rapax. 



First skin black or very dark, second orange. . tricolor. 



Exuviae wholly orange-yellow. ulmi. 



A. rapax is the type of Aspidites. A. perniciosus, tenebricosus and 

 srnilacis, included in it by Berlese and Leonardi, are not closely related to 

 rapax, and should be placed elsewhere. [Since writing the above I have 



