168 Mr. T. D. A. Cockerell on 



Subg. Diaspidiotus (Berl. & Leon.), Ckll. 

 Aspidiotus subsimilis, sp. n. 



Mexico : Cuautla, on a leafless tree, infesting the bark, 

 May 31, 1897 (Koebele, 1750) ; Hermosillo, on Ccesalpinia 

 Palmeri{?), April 24 (Koebele, I] IS). 



$ . — Scale about 1^ millim. diara., circular, flat, thin, pale 

 grey to whitish, or tinged with brown ; exuvige covered, in- 

 conspicuous, marked by a whitish boss. This scale is very 

 like that of A. perniciosus, but there is no distinct dot and 

 ring. 



£ . — Scale oval, slightly stained with blackish ; exuviae 

 yellowish. 



<j> . — Brownish yellow ; of ordinary shape ; no circum- 

 genital glands ; only two lobes, these separated by a wide 

 interval, prominent, upright, shaped about as in A. perniciosus, 

 sometimes with a notch on the inner side ; spines fairly 

 large, two pairs on each side, and a single one (sometimes a 

 pair) a considerable distance along the margin ; squames 

 spine-like, but very minute, hardly to be seen ; the usual two 

 marginal incisions on each side, the glandular processes of 

 the first long and straight, the outermost very narrow, the 

 inner longer (in fact, very long for a Diaspidiotus) and 

 thickened towards the end, so as to be inversely carrot- 

 shaped ; anal orifice near the hind end ; linear transverse 

 dorsal glands as in perniciosus &c. ; from the bases of the 

 lobes extend long brownish root-like processes, as in various 

 other species. 



The newly-hatched or embryonic larva has the caudal 

 lobes oblique, distinctly twice notched on the outer margin. 



Aspidiotus cyanophylli, Signoret. 



Mexico: Orizaba, on myrtle, July 15, 1897 (Koebele, 

 1705). 



This species might well be the type of a new section. 



Section Hemibeblesia, Ckll. 



Aspidiotus cupressi, sp. n. 



Mexico : Toluca, June 24, 1897 (Koebele, 1665). Lives 

 on twigs of Cupressus. 



?. — Scale small, about 1 millim. diam., rather convex, 

 white ; exuviae subcentral to lateral, covered by a white film, 

 the film often rubbed off, leaving the exuvige exposed, shining 





