

342 rROCEEDINGS OP THE NATIONAL MUSEUM. vol 51. 



sciire by the density of the chitine ; though in some instances portions 

 of the flange become flattened out so that the crenulations appear 

 external. Structure of thevasiform orifice doubtful, as owing to the 



opacity of the integument it is 

 ...^ not possible to determine its 



characteristics. 



Length, exclusive of fringe, 1 

 mm. 



MOvum narrowly reniform or al- 

 most crescentic, peduncle very 

 \ short; pale ochreous or straw- 

 \ colored, when empty. 

 \ Habitat— D. Ost-Afrika, Dar 



M^ es Salaam, April, 1902. Auf Cit^ 

 \ rus sp. Prof. A. Zimmermann S. 

 (No. 2). 



Fig. 1.— Margin op pupa case of Aleukocan- „,, . i • i 



THUS ciTRicoLus. (AFTER newstead.) Thc puparia occuTrcd m large 



overcrowded colonies, appearing 

 to the unaided eye as patches of soot-like deposit upon the under sur- 

 face of the leaves. They were associated with the Coccid Aspidiotus 

 aurantii Maskell, chiefly young forms of the female. (Newstead.) 



ALEUROCANTHUS CITRIPERDUS, QuainUnce and Baker. 



Aleurocanlhus dtriperdus Quaintance and Baker, Journ. Agric. Research, vol. 

 6, 1916, p. 459, fig. 1. 



This species is represented in the bureau collection from Java, 

 Ceylon, and India. It seemingly is an abundant species. It has 

 been found on orange and on an unknown tree. 



ALEUROCANTHUS DISSIMILIS, new epecies. 



Plate 34, figs. 1-9. 



Larva. — The cast larval skins arc found attached to the dorsum of 

 the pupa case, and it is therefore difficult to study them with any 

 accuracy. They possess, however, the same serrated marginal teeth 

 found in the pupa case and are thus easily distinguished from the 

 larvae of other species. The spines on the larvae (fig. 9) are not as 

 much reduced as those of the pupa case, but appear more like those 

 normally met with in species of the genus. 



Pupa case (fig. 1) . — Length 0.752 mm. ; width 0.512 mm. ; color un- 

 der the microscope dark brown to black. Dorsum armed with a series 

 of spines, as indicated in the figure. These spines are not prominent 

 as in other members of the genus, but are reduced to mere tubercles 

 (fig. 2). Some of those upon the thoracic area are acute at the tip 

 (fig. 3), while some (fig. 4) are not as much reduced as others. The 

 abdomen is armed with a median dorsal row of twelve pairs of these 



