26 PROCEEDINGS OF THE NATIONAL MUSEUM. tol. 60. 



ducts alternating with the marginal spines ; margin of body with a 

 continuous series of stout conical spines, each constricted beyond the 

 middle, dorsally with a submarginal row of smaller spines parallel- 

 ing the margin, and in the mid-thoracic region about three pairs of 

 similar spines; ventrally with a few slender setae; anal lobes not 

 prominent, mostly invaginated into the posterior apex of the body, 

 broadest behind the middle, dorsally with a stout spine at base, an- 

 other near middle, and a third at outer angle, apically with a long 

 seta about two-fifths the length of the body; ventrally with two 

 rather large setae on the inner face; anal ring with pores and six 

 setae, these about half as long as the anal lobe setae. 



Cotyve.—Q^t. No. 24757, U.S.N.M. 



The following generic description has been prepared from the 

 preceding : 



GENEEIC DIAGNOSIS OF THEKES. 



Eriococcine forms, adult female enclosed in a sac with posterior 

 opening; body oval, convex, narrowed behind; antennae 7-8-seg- 

 mented; legs normal, digitules slender, slightly knobbed, claw with 

 denticle, hind coxae with pores; derm with numerous tubular ducts 

 with cup-shaped bases both dorsally and ventrally and with multi- 

 locular disk pores ventrally in abdominal region; dorsally and at 

 margins with numerous very short-conical, nipplelike spines, some 

 of these near posterior end of body more elongate; ventrally with 

 setae in transverse rows ; anal lobes well developed, but rather short 

 and broad, each bearing three stout dorsal spines and two ventral 

 satae in addition to the long apical seta; anal ring with pores and 

 eight setae; young larva oval, with 6-segmented antennae, normal 

 legs, stout marginal and dorsal spines, trilocular pores and tubular 

 ducts; anal lobes with spines and setae as in adult, anal ring with 

 six setae. 



The writers consider it very doubtful if tliis subgenus has any 

 valid standing, and at present regard it as representing nothing more 

 than a possible key or table section within the genus Eriococcus 

 which may break down entirely when the species of that genus are 

 better known. 



Genus CYLINDROCOCCUS Maskell. 



Plate 2, fig. 2. 



Genotype. — Cylindroeoccus casuarinae Maskell. 



Reference.— Y^viidiU, Cat. Cocc. World, 1903, p. 84. 



Maskell established this genus with two included species, and th( 

 first definite designation of type appears to have been made in the 

 Fernald Catalogue, as referred to above. 



The type species of this genus is represented in the Maskell collec- 

 tion by three slides, one of " larvae, 1891," one of " adult female, 



