akt. 17, MONOPHLEBINAE AND MARGARODINAE—MORRISON, 41 
COELOSTOMIDIA WAIROENSIS (Maskell). 
Reference.—Fernald Cat. Cocc. World, 1903, p. 31. 
This species is represented in the Maskell collection by a single 
slide of ‘‘antenna and foot of male, 1896,”’ and by a single unmounted 
male under No. 99. The few structural characters that have been 
available for study indicate that this species is not congeneric with 
the genotype, but a definite reassignment of the species will prob- 
ably have to wait until it is rediscovered and correctly associated 
with its female and immature stages. 
Genus CALLIPAPPUS Guerin Meneville. 
References.—Fuller, Trans. Ent. Sec. Lond., 1899, p. 435.— 
MacGillivray, The Coccidae, 1921, p. 94.—Froggatt, Sci. Bull. 19, 
New South Wales Dept. Agr., Oct., 1921, p. 41. 
This genus has been discussed in considerable detail in the papers 
cited above, and since the Maskell material of the three species de- 
scribed by him is very limited and has not been supplemented by 
specimens of any of the other described species, the writers’ studies 
of this genus have been rather inconclusive. 
The writers have not been able, from the available specimens, 
to establish any distinct morphological differences that might 
serve as a basis for separating Maskell’s three species. Various 
possible differences along this line are indicated in part in the 
drawings of comparable areas of the derm of Maskell’s three spe- 
cies shown in the figure accompanying the discussion of this genus, 
but these have not yet been definitely established as tangible 
specific characters. Certain structural characters, some of rather 
fundamental importance as indications of the relationship of the 
genus, that have either not previously been noted or have been 
incorrectly understood may be remarked upon, however. So far 
as it goes, Mr. Fuller’s discussion of the genus appears to be excel- 
lent, but he fails to mention the abdominal spiracles or the character 
of the derm and its pores and setae in the adult female, the distinctly 
2-segmented tarsi in the adult male and the abdominal spiracles and 
several short lanceolate spines on the intermediate antennal segments 
in the larva, all of which appear to the writers to possess taxonomic 
significance. The derm in the adult, except for the invaginated pouch, 
becomes heavily chitinized, but retains numerous large, clear areola- 
tions, each of which has a multilocular disk pore in its center. The ab- 
dominal spiracles are fairly large, cylindrical tubes slightly constricted 
by a band of pores near the inner end. In the one or two specimens 
where they can be plainly observed, there are eight pairs present in the 
abdomen, of which the six anterior pairs are approximately uniform 
in size and appearance, while the seventh pair is considerably reduced, 
