ART. 17 MASKELL ASTEROLECANIINAE MORRISON 17 



sal and ventral surface setae few, small, not conspicuous, a cluster 

 of larger setae between the antennal bases ventrally ; 8-shaped pores 

 conspicuous, in complete submedian and marginal and a posteriorly 

 incomplete intermediate row dorsally on each half of body, the pores 

 in the submedian row the largest; no tubular ducts; no tiny simple 

 pores observed; anal lobes only slightly protruding, apical seta as 

 much as 160ja long, each lobe chitinized on inner and ventral faces, 

 bearing two stout, somewhat curved setae on inner face and two 

 small slender ones on outer upper face ; anal ring with a single row 

 of pores and six setae, each around 32/a, and with a pair of shorter 

 setae immediately below the ring; cauda very short, much broader 

 than long, the margin very broadly rounded or almost truncate. 

 Cotyfe.—Q>2ii. No. 40365, U.S.N.M. 



CEROCOCCUS FROGGATTI, new species 



Plate 9, figs. 1-11 



i?e/e'/-ctice.— Froggatt, Agr. Gaz. N. S. Wales, vol. 26, 1915, p. 1056. 



From an extended comparison between the single adult female of 

 stellatus available from Maskell's type material and a few specimens 

 of a species of Gerococcus identified as stellatus^ received from Mr. 

 W. W. Froggatt, the conclusion has been reached that the latter 

 specimens can be distinguished from Maskell's species by a few 

 small differences that appear to be definite, on the basis of the very 

 limited material studied. Even if the two are actually definitely 

 proven to be distinct when an extended series of each has been 

 studied, their very close relationship is a fact that should be par- 

 ticularly emphasized. 



Adult f&male. — Test as described by Froggatt (reference cited). 

 Very similar to C. stellatus (Maskell), no apparent definite differ- 

 ences in most structures, pore pattern seemingly identical, differing 

 definitely, so far as has been determined, in that the ventral trans- 

 verse rows of 8-shaped pores at the apex of the abdomen adjacent to 

 the genital opening are accompanied by a few scattered multilocular 

 disk pores of fair size, each with around seven to eight loculi and 

 usually with bilocular center, in contrast to the apparent complete 

 lack of such pores in stellatus; and in the occurrence of few quinque- 

 locular disk pores in the bands running from the anterior spiracles 

 to margin, the number in this form apparently not exceeding 90, in 

 contrast to around 115 in stellatus. 



Larva. — Very similar to that of stellatus in most details, but seem- 

 ingly offering an even more conspicuous differentiating character 

 than is exhibited by the adults: the cauda in stellatus., as described, 

 relatively long and strongly protruding, with rounded apex; in this 



4817&— 27 2 



