164 The Philippine Journal of Science 1920 
spines, with only a few minute cylindrical peglike spines set in 
circular bases, the spines about 7 » long; ventrally, at least on 
abdomen, with transverse segmental rows of rather large hairs 
of varying length, the longest occurring near median line; dor- 
sally, more particularly laterally, with fairly numerous minute 
tubular ducts, apparently with cup-shaped bottoms, although 
this has not been determined certainly; ventrally, particularly 
in the spiracular region and posteriorly, just before the anal 
ring, with fairly numerous, circular, multilocular disk gland 
pores, these all apparently quinquelocular. 
Young larva.—Only embryonic larve inclosed in the body of 
the adult female have been available for examination, and conse- 
quently only a few structural details can be stated definitely. 
Antennz 6-segmented, III only a little longer than any of the 
others; tarsal claw denticle only slightly developed, digitules 
about as in the adult; body with a marginal row of large spines 
and with four longitudinal rows of much smaller spines dorsally, 
at least on abdomen, these probably corresponding to the peg- 
like spines of the adult; anal ring with six hairs, the cauda only 
slightly developed. 
Intermediate stage —aA single specimen, apparently represent- 
ing an intermediate stage of this species, shows only an inter- 
gradation of characters between the larva and adult, with one 
exception, this being the possession of a few large tubular ducts 
with cup-shaped bases, scattered dorsally, these apparently simi- 
lar to those found in related genera and species, although it has 
not been possible to trace the usual slender continuation of the 
bottom, these occurring apparently in addition to the minute 
tubular type described in the adult. | 
This species has been described from four mounted specimens 
and a few more in position on the host, from Tibiao, Antique 
Province, Panay, on Ficus sp., May 9, 1918 (McGregor). The 
material was received through Professor Cockerell. The types 
are in the United States National collection of Coccide. 
A rather hasty comparison of this species with specimens of 
other species in the collection at Washington indicates a fairly 
close relationship with Rhizococcus intermedius Mask., and, in 
morphological details, with Eriococcus danthoniae Mask. and E. 
fagacicorticis Mask. 
The character of a majority of the descriptions of species in 
this genus is such that this species cannot be accurately com- 
pared with many of the species at present included here. 
