356 PROCEEDINGS OF TEE NATIOXAL MUSEUM. vul.51. 



Puparium of second stage female [fig. 3, 2] black, shining, more or 

 less circular, clothed with nimierous long spiniform hairs, with the 

 central spiny boss and fringe, as in the adult. 



Ovimi [fig. 3, 3] yellow, pedunculate, curved, swollen basally, 

 bluntly pointed, anteriorly, cuticle finely punctate. After the 

 escape of the larva [fig. 3, 4) it bears a marked resemblance to a 

 univalve shell. 



Habitat. — Sainte Marie, Madagascar, August, 1904. On an un- 

 named plant, the leaves of which were almost completely covered 

 with the black puparia, larvae and eggs. Although so numerous, I 

 failed to find a puparium which had not been ruptured by the escape 

 of the imago. The boss-Hke process on the dorsum of the puparium 

 is very remarkable, and serves at once to distinguish the species. 

 In most instances it appears to be semidetached, so that in all prob- 

 ability it represents the larval exuviae, though I can not find that 

 any previous author has discovered a similar trait in this family 

 of the Homoptera. The test of the younger individuals are still 

 more remarkable, in that they appear hke little black spiny pillars, 

 resembling, in form, some of the succulent Echinocacti. 



This species is dedicated to its discoverer, Doctor Voeltzkow. 

 (Newstead). 



Genus ALEUROCYBOTUS Quaintance and Baker, 



Aleurocybotus Quaintance and Baker, Tech. Ser. 27, pt. 2, Bur. Ent. U. S. 

 Dept. Agr., 1914, p. 101. 



Pupa case of medimn size, very narrow and elongate; margin 

 toothed, the wax tubes very poorly developed; submarginal area 

 not separated from dorsal disk; dorsum without papillae or pores 

 though there is present on each side of median area of abdomen a 

 row of irregular pit-hke structures; tracheal folds not discernible; 

 secretion usually present as a short rim of wax, elevating case from 

 leaf. Vasiform orifice subcordate, the lingula exposed caudad of 

 operculum, usually included, but the tip sometimes exserted. 



Adult with a single flexure in radial sector of forewing and no 

 trace of media. Antennae of male with segment VII as long or 

 longer than the other segments combined. 



Type. — Aleurocyhotus graminicolus (Quaintance). 



KEY TO SPECIES OF ALEUROCYBOTUS. 



1. Pupa case with a submarginal row of prominent vasiform spines setiferus. 



2. Pupa case without such row of spines graminicolus. 



