18 PROCEEDINGS OF THE NATIONAL, MUSEUM vol.71 



species merely a rather narrow thickened band bearing one or two 

 denticulae on each side. 



This species has been characterized from a few mounted and un- 

 mounted examples received from Mr. W. W. Froggatt under his 

 No. 91, and collected by him at Mittagong, New South Wales, on 

 stems of Helichfn/svmh diosmifolimn (Compositae). 



Holotype and paratypes. — Cat. No. 40366, U.S.N.M. 



CEROCOCCUS INDICUS (Maskell) 

 Plate 28, fig. 2 



References.— FevnoXd^ Cat. Cocc. World, 1903, p. 77.— Green, 

 Journ. Econ. Biol., vol. 5, 1910, p. 5 (as new). 



The Maskell collection contains a single slide of this species, of 

 " adult female, 1896 " in fair condition and a few unmounted speci- 

 mens on the host under lot No. 508. Specimens from the material on 

 which Mr. Green based his description have also been available. 



As Mr. Green's figures (reference cited) are quite satisfactory, no 

 attempt is made in this paper to illustrate the species. Some addi- 

 tions to Green's detailed description are given below. 



Adult female. — Fully distended, mounted adult female about 2 

 mm. in diameter, excluding the protruding apical portion of the ab- 

 domen ; antennae unsegmented cones, the apex not invaginated ; pores 

 in spiracular to margin bands normally quinquelocular, not simple, 

 the anterior bands with around 60 pores in each, the posterior bands 

 split, with diverging halves as already described for hryoides; beak 

 stout conical, 2-segmented; typical number of cribriform plates two 

 in each anterior group and four in each posterior group ; with a few 

 multilocular disk pores scattered in the posterior ventral region, but 

 no lateral clusters of these; inner and ventral faces of anal lobes 

 with chitinized areas, the inner distinctly large areolate. 



No stages other than adult female have been available. 



Gotype.—Q^i. No. 40367, U.S.N.M. 



The procedure adopted by Mr. Green (reference cited) of regard- 

 ing this form as an undescribed species does not appear to accord 

 with the established rules of zoological nomenclature, and if these 

 are followed, Maskell, as the first publisher of a name for this 

 insect, must be credited with the authorship of the species. 



This insect is separable from Maskell's Australian and Fijian 

 species by several characters ; none of the species from these regions 

 that have been examined has more than a single pair of clusters 

 of cribriform plates while this has two pairs of such clusters; the 

 presence of rudimentary legs also serves to distinguish it from 

 hryoides., and the split posterior spiracular pore bands from para- 

 doxus. It approaches stellatus and froggatti most closely, but these, 



