168 Mr. T. D. A. Cockerell o>i 



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

 Aspidiotus suhsimilis^ sp. n. 



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

 May 31, 1897 {Koebele, 1750) : Hermosillo, on Ccesalpinia 

 Palmeri (?) , April 24 [Koebele, 1713). 



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

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

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

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

 ring. 



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

 yellowish. 



$ . — Brownish yellow ; of ordinary shape ; no circum- 

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

 interval, prominent, upright, shaped about as in ^. 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 D iaspidiotus) and 

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

 shaped ; anal orifice near the hind end; linear transverse 

 dorsal glands as in pertii'ciosus &c. ; from the bases of the 

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

 other species. 



The newly-hatclied or embryonic larva has the caudal 

 lobes oblique, distinctly twice notched on the outer margin. 



Aspidiotus cyanophiflli, Signoret. 



Mexico: Orizaba, on myrtle, July 15, 1897 [Koebele^ 

 1705). 



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



Section Hemiberlesia, Ckll. 



Aspidiotus cupressij sp. n. 



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

 on twigs of Cupressus. 



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

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

 the film often rubbed oflT, leaving the exuvise exposed, shining 



