50 CALIFORNIA ACADEMY OF SCIENCES. [Proc 3D Ser. 



dimerous. Legs subequal; coxa stout, not very much shorter than femur; 

 trochanter small, triangular, with two spines; tarsus longer than tibia; tarsal 

 digitules fine and knobbed, digitules on claw short and stout; claw large, 

 with a minute denticle on its inner margin. 



Newly Hatched Larva. — Length .6 mm., width .3 mm.; elliptical in form; 

 color pale brown. Antennae and legs very large, well developed. Antennae 

 six-segmented; segment 6 the longest; segments i to 5 with a few hairs; 

 segment 6 bearing many rather long hairs; formulae: — 



6, I, 3. 2, (4, 5)- 

 6, 3. (2, i) 4, 5- 

 6, (I, 3) (2, 4, 5). 



6, 3. I, (2, 4. 5)- 



6, (3. i) "(4, 5) 2. 

 Mouth-parts very large; rostral loop longer than body; mentum large and 

 conical. Margin of body with conspicuous, spiny hairs. Two capitate hairs 

 on submargin close to first spiracle. Legs subequal; tibia about one-half as 

 long as tarsus; four fine hair-like digitules; claw slender, denticle on its inner 

 margin. Ventral aspect of body with transverse rows of fine hairs; poste- 

 rior end of body furnished with lobes, each terminated by a long hair, and 

 three spines, two on inner side of the hair and one on the outside. Anal 

 ring hairless. 



This species was found by Mr. Nawa on Quercus gland- 

 ulifera (Nara) in Fukui-ken, and by Mr. A. Onuki, on 

 Rhamnus jafomca var. genuina (Kuro-umemodoki) in 

 Nagano-ken. 



Type in the Entomological Collection of Leland Stan- 

 ford Jr. University, and co-types in the author's collection. 



Tribe Eriococcini. 

 Genus Eriococcus Targ. 



8. Eriococcus gramiuis (?) Mask. 



Eriococcus graminis (?) Maskell, Trans. & Proc. Nev/ Zealand Inst., Vol. 

 XXX, 1897, p. 243. 



This species was found on bamboo, in Gifu-ken. The 

 original description was made by Maskell from specimens 

 sent to him by A. Koebele, who had found them on grass 

 in Hongkong. 



9. Eriococcus japonicus, sp. nov. 



Plate VIII, Figs. 23-25. 



Adult Female. — Female sac, length about 1.7 mm., width about i mm.; 

 convex, elliptical; color pale straw. 



