"2^ 



SCIENCE BULLETIN, No. 19. 



Genus LI. Cylindrococcus, Maskell. 



Trans. New Zealand Institute, vol. xxiv, p. 41, 1891. 

 Cockerell, Canadian Entomologist, vol. xxxi, p. 277, 1899. 

 Crocidocysta, Riibsaamen, Bed. Ent. Zeit., Bd. xxxix, p. 218, 1894. 



This genus was founded by Maskell for a remarkable group of coccids 

 tbat form curious seed capsule-like galls upon the twigs of the Gasuarinas 

 /sheoaks), and the species are widely distributed over Australia. 



Gall -producing coccids, with only the anterior pair of legs present, the 

 anal segment circular, slightly convex, and not prolonged into a tail, but 

 bearing long fire hairs, while the cephalic and thoracic segments are almost 

 hairless. 



Cylindrococi-ii.'^ aniflior, Maskell (Fig. 13). 

 Trans. New Zealand Institute, vol. xxiv, p. 44, pi. x, figs. 8, 1891 ; vol. xxv, p. 240,1892. 

 Cockerell, Canadian Entomologist, vol. xxxi, p. 277, 1899. 

 Crocidocysta froggati, Riibs., Berl. Ent. Zeit, B. xxxix, p. 219. 



In 1891, Maskell described the galls without giving the maker a specific 

 name ; in the folloAving year he completed his description from specimens 



Fig. 13. — Cylindrococcus amplior. 



from Adelaide, South Australia, on Casuarina quadrivalvis ; it has also been 

 collected on casuarinas in south-western Victoria (C. French, junior). 



The galls springing out from the branchlet usually solitary, but sometimes 

 in clusters of two or three, oval tapering to the tip, sessile and wonderfully 

 like a seed cone. The basal portion of the gall composed of a number of 

 reddish brown leaf-like bracts which encircle the base well up the sides, 

 forming a calyx-like structure, into which fits the gall proper. This is broad 

 at the base, oval, and tapering to a pointed apex, which is formed of the tips 



