THE CANADIAN ENTOMOLOGIST. 131 



Xerophilaspis Parkmsonice, sp. n. 



$ . — Scale small, about i millim. diam.; exuviae large, dark brown to 

 black ; first skin large, placed on second ; second more or less covered 

 by a white film ; scale suboval, white, thin ; the part of the scale beyond 

 the exuviae is anteriorly much less than the diameter of the latter, posteri- 

 orly somewhat greater, the exuvise being excentric. 



^ . — Scale oval, white ; exuvia towards one end, brown, with a pale 

 median line. 



$ . — (Mounted on slide) About 700 /x long ; spines moderately large ; 

 squames scarcely visible ; caudal end striated ; no circumgenital glands ; 

 anal orifice long and narrow, about 10 //. long and 39 /x from base of 

 median lobes ; median lobes rather large, about 12 /x long, close together 

 but not contiguous, broad, rounded at ends, with a deep square notch on 

 the outer side ; second lobes smaller, separated from the first by a fair 

 interval, pointed, notched on the outer side ; third lobes rudimentary ; 

 dorsal glands few ; interlobular chitinous processes present, but very 

 small: they are beneath the lobes rather than between them; a submarginal 

 row of elongate glands, such as are seen in Chionaspis ; anterior part of 

 insect brown even after prolonged boiling ; antennae represented by large 

 low-conical protuberances ; embryo in ? very large, about 186 /x long, 

 with dark eyes. 



Hab. — Phcenix, Arizona, Oct. 23, 1899; on twigs and branches of 

 Parkinsoiiia torreya?ia. The Farkinsonia, or " palo verde," is common 

 around Phoenix, and I expected to find a coccid peculiar to it, but for 

 many days my search was fruitless. At last I saw, one day, a tree with 

 the branches on one side turned yellow, and on going up to it, found the 

 above-described insect in great numbers. With the scales I found a 

 small form of Chilocorus cacti predaceous upon them. X. Parkinsoni(Z is 

 not a true Xerophilaspis, nor yet a satisfactory Targionia. It differs from 

 typical Xerophilaspis in the development of the white scale, and the posi- 

 tion of the anal orifice ; but it agrees sufficiently in the form of the 

 exuviae, the large embryo, etc. 



Diaspis Arizo7iicus, sp. n. 



5 .—Scale, dull white, more or less circular, but very irregular be- 

 cause crowded into the cracks in the bark : a thick ventral scale ; exuviae 

 very inconspicuous, yellowish-white, or first skin sometimes brown j first 

 skin with its anterior end extending beyond margin of second. 



