28 PROCEEDINGS OF THE NATIONAL MUSEUM vol.71 



Preadult female. — In general resembling the adult female ; smaller, 

 body longer than wide; antennae normally T-segmented; legs 

 wanting; dorsum and margin with small 8-shaped pores; spiracular 

 spines and spiracular disk pore bands as in adult ; cribriform plates 

 wanting; marginal setae rather inconspicuous; anal area not so well 

 developed, but the plates showing imbricate-reticulate areas. 



Larva (embryonic only). — Ovate, somewhat broader anteriorly, 

 length 320//,, width 210)u,; antennae 6-segmented, apical somewhat 

 the longest; legs not unusual; all body setae minute, marginal not 

 evidently differentiated in appearance from the others; spiracular 

 spines as in adult, two anterior on each side, one long, one short, one 

 posterior, this also short, not elongate as in later stages; 8-shaped 

 pores in submedian, intermediate and marginal rows on each half 

 of body dorsally; tubular ducts not located; anal ring narrow with 

 eight setae; anal plates areolate; apical setae perhaps one-third 

 length of embryonic body. 



Cotype.—C?ii. No. 40371, U.S.N.M. 



This insect is plainly associated with several other species in 

 Lecaniodiaspis through having the upper, outer margins of the anal 

 plates distinctly imbricate-reticulate or longitudinally long areolate 

 for a varying depth. These associated species definitely include 

 haculifera Leonardi from Java, malaboda Green from Ceylon, and 

 quercus Cockerell from Japan. Perhaps some other species, known 

 to the writers only through incomplete published descriptions, may 

 also possess this conspicuous differentiating characteristic. 



LECANIODIASPIS EUCALYPTI (Maskell) 



Plate 19, figs. 1-17; Plate 20, figs. 1-11; Plate 21, figs. 1-13; Plate 29, fig. 2 



References. — Fernald, Cat. Cocc. World, 1903, p. 55. — Froggatt, 

 Agr. Gaz. N. S. Wales, vol. 26, 1915, p. 762. 



There are four slide mounts of this species in the Maskell collection, 

 as follows: One of "adult female, 1892," one of "antennae, 1892," 

 one of "2nd stage female, 1892," and one of "larvae, 1892," A 

 small quantity of unmounted material is included under No. 246. 

 Supplementary mounts have been prepared from this, and additional 

 specimens, collected on Eucalyptus in Australia by Mr. George Com- 

 pere, have likewise been available. 



Adult female. — See Maskell and Froggatt references for descrip- 

 tion of test and of body of female; early adult elliptical, distinctly 

 longer than broad, length about 1.8 mm,, width about 1,3 mm,; 

 older examples somewhat broader; derm membranous throughout 

 or becoming faintly chitinized posteriorly; antennae fairly well 

 developed, about 215/t long, normally 6 to 8 segmented, the last 

 three bearing elongate, but thick, slightly curved sensory setae; legs 



