226 THE CANADIAN ENTOMOLOGIST. 



but 1 have specimens of that, and it is clearly a different thing ; the scale 

 is dark-coloured. I do not suppose that P. amygdali was introduced 

 into Pinos Altos on trees, but rather that it lives on some rosaceous 

 shrub or tree in the mountains adjacent and has been carried to the 

 peach tree on the feet of birds. This idea is favoured by the observation 

 that it suffers severely from a Chalcidid parasite. The insect was 

 discovered on July 8, 1896. 



(6.) Aulacaspis monianus, n. sp. — % . Scale circular to slightly oval, 

 slightly convex, white, exuvise exposed, rather large, pale straw-yellow, 

 first skin on second, but to its side. Diameter of scale little over i mm. 



$ . When dry, brown-black, colourless after boiling in caustic soda. 

 Mouthparts far anterior. Five groups of ventral glands, caudolateral 

 and median groups compact, caudolaterals of 8, cephalolaterals 13, 

 median 7. Median lobes wide apart at base, rounded, very low, 

 their height above the margin less, than half their breadth, their bases 

 pointed, their colour slightly yellowish, not dark. Second and third 

 lobes small, rounded, nearly obsolete. Plates small, spinelike. Anal 

 orifice some distance from hind end, but caudad of the level of the 

 caudolateral grouped glands. Margin with narrow sacs or saclike 

 incisions, about as long as the greatest breadth of a median lobe. 



$. Scales in colonies, much as in A. texensis, brownish-white, 

 distinctly 3-carinate, exuviae at one end, pale orange. 



Hab.— Pinos Altos, N. M., July 8, 1896, on the trunk and limbs of 

 Quercus Wrightii. It is evidently nearest to A. texensis, which lives on 

 Sophora in Texas, but the median lobes are differently shaped and do 

 not show the prominent serrations. The $ scales are not so white and 

 have sharper keels than in texensis, but the 9 scales are whiter and have 

 the exuvice more contrasting with the scale. 



I found four species of Coccidae on the Qiiercus Wrightii at Pinos 

 Altos, namely : Aulacaspis viontanus, n. sp.; Aspidiotus ancylus, 

 Putnam (evidently native) ; Kermes gallifonnis, Riley ; and OUiffiella 

 cristicola, Ckll., ined. The last is an extraordinary gall-making species, 

 the type of a new genus of Idiococcinae, the larva resembling Crocido- 

 cysta; the adult, Sphcerococms— k-Ws^WdXxdM insects! The galls were 

 abundant on the leaves. 



I found at Pinos Altos two other species of oaks {Q. Gambelii and 

 Q. hypoleiica), kindly identified for me by Mr. C. A. ICeffer, but on 

 neither of them did I observe any Coccidas. Pinos Altos is the only 

 locality in the Rocky Mountains where I have seen as many as three 

 species of oaks growing on one hillside. 



