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



femur and three times as long as tarsus; tarsal digitules fine and knobbed, 

 digitules on claw stout, short, and knobbed; daw as usual, curved. Each of 

 the marginal lobes of the posterior segment bears a single long hair, with two 

 spines at the base. Anal ring large, prominent, with six hairs. 



This species was found by the author on Kraunhia jlori- 

 bunda (Fuji) at the Yokohama Nursery, Yokohama. 



This is allied to D. -pini Kuwana, but the body of the 

 former is shorter and more stout, the legs and antennae 

 larger in proportion to the body, and segment 8 of the 

 antenna is as long or not quite so long as 6 and 7 together, 

 while 6 is not much longer than 3. 



Type in the Entomological Collection of Leland Stan- 

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



Genus Phenacoccus Ckll. 

 15. Phenacoccus pergandei (?) Ckll. 



Phenacoccus per gandei Cockerell, Bull. No. 4, T. S., Div. Ent., U. S. Dept. 

 Agric, 1896, p. 55. 



This species was found by the author on Diosfyros kaki 

 (Kaki) in Kusatsu, Shiga-ken. The specimens are in a 

 poor condition. 



Genus Spliaerococcus Mask. 

 16. Sphaerococcus parvus Mask. 



Plate IX, Fig. 41. 



Sphcerococcus parvus Maskell, Ent. Mon. Mag., Vol. XXX, 1897, p. 244; 

 Trans. & Proc. New Zealand Inst., Vol. XXX, 1897, p. 247. 



This species was found by the author on the trunk of a 

 cherry-tree in the grounds of the Nishigahara Agricultural 

 Experiment Station, Tokyo. Previous to this it had been 

 found for the first time by A. Koebele, on a cherry-tree 

 in Japan (the locality not mentioned), and described by 

 Maskell as a new species. 



Mr. Maskell evidently made a mistake when he con- 

 sidered the antennae of the newly hatched larv^ to be 

 composed of six confused segments. They are distinctly 



