ABT. 17 MASKELL ASTEROLECANIINAE MORRISON 13 



a mass of white cottony secretion thickly covering and concealing it, 

 while pulcheUus^ the genotype, has a definitely formed ribbed test, 

 and the other species here assigned to this genus, leptospevrni^ is 

 much larger in size and forms a conspicuous twig swelling, within 

 which it lives. Morphologically the species is distinguished from 

 leptospermi by the lack of minute simple pores in the dorsal band, as 

 well as by the difference in size. From pulchellus it is distin- 

 guished by the broad, relatively very lightly chitinized dorsal pore 

 band, a structure which in pulch£.lhis is almost linear, except where 

 tripled, and usually heavily chitinized. 



CALLOCOCCUS LEPTOSPERMI (Maskell) 

 Plate 5, figs. 10-13 ; Plate 6, figs. 1-8 : Plate 27, fig. 6 



References. — Fernald, Cat. Cocc. World, 1903, p. 86. — Froggatt, 

 N. S. Wales, Dept. Agr. Sci. Bull. 19, 1921, p. 11 (part). 



The Maskell collection includes eight slides of this species, one of 

 " female before gestation, 1893," one of " female at gestation, 1893," 

 one of " female after gestation, 1893," one of " male pupa, 1893," one 

 of '' male, 1893," one of " males, 1893," one of '' late larva, 1893," and 

 one of '' early larvae, 1893." None of these slides is at all satisfac- 

 tory. There are some galls of the species under lot No. 301 and a 

 male glued to a rectangle of black cardboard. Specimens identified 

 as this species, received directly from Mr. Froggatt, have also been 

 available for comparison, but these represent another species, so the 

 descriptive notes that follow have been taken from the Maskell 

 specimens. 



Adult female. — External appearance and habit as described by 

 Maskell; elliptical, size varying, specimen examined 9 mm. long by 

 6 mm. wide as mounted ; derm membranous, or possibly more or less 

 irregularly lightly chitinized at maturity; antennae reduced to un- 

 segmented nearly cylindrical tubercles, slightly invaginated and 

 bearing two or three stout setae at apex ; legs lacking ; beak small, 

 short conical, segmentation uncertain; spiracles stout, with short, 

 broad, somewhat expanded bar, with a cluster of small quinquelocu- 

 lar pores around the opening of each; without definitely differ- 

 entiated marginal setae; without spiracular spines; with small stiff 

 setae widely scattered both dorsally and ventrally, largest, except for 

 some probably corresponding to the anal lobe setae, in the mid- 

 dorsal line, precise arrangement not at all certain; 8-shaped pores 

 all much modified, small, sometimes with three loculi in line, usually 

 with heavy outer wall, apparently confined to a broad median lon- 

 gitudinal band or stripe running the full length of the dorsal surface 

 and continued onto the ventral surface at each end. this band, made 



