Dec, 1909.] KUWANA : CoCCID^ OF JaPAN. 163 



joint three the longest: formula 3, 4, (2, 5), 8, 6, 7, i. Legs subequal, tibia 

 longer than tarsus, claw stout and curved, digitules as usual. Marginal 

 spines simple and pointed ; stigmatic cleft not so deep, with one long and 

 two short spines. Anal plates large, and broad ; outer edge a little longer 

 than base ; outer angle round ; with four strong spines near apex. Length 

 about 6. 5 mm., width about 3 mm. 



On Ccltis sinensis. 



This species resembles, in general form, L. longulnm Douglas, but 

 differs in the formula of the antenna and in the shape of the anal 

 plates. 



23. Mytilaspis (Lepidosaphus) arii, new species. (PI. XIL Figs. 27-31.) 



Female Scale. — Very long and narrow, straight, sides parallel, with a 

 narrow, flattened border. Color more or less variable, but usually yellowish 

 brown. Pellicles paler than the scale, occupying about one fourth of the 

 total length of the scale ; first exuvia pale yellow, segmentation distinct, about 

 .4 mm. ; second exuvia much longer, about .7 mm., posterior end yellow. 

 Ventral scale whitish, well developed, with median longitudinal division 

 attached a little with the margin. Length about 3.5 to 4 mm., width about 

 .4 mm. 



Male Piiparium. — Resembles that of female, but is much smaller ; color 

 pale, with white, flattened border. Pellicle yellow ; ventral scale complete. 

 Length about i mm. 



Adult Female. — Elongate in form, lateral margins straight and approxi- 

 mately parallel. The last abdominal segment presents the following charac- 

 ters. The anterior group of spinnerets consists of three, the anterior laterals 

 of about seven to ten, and the posterior laterals of about seven to nine. The 

 median lobes are very large and wide, with the sides nearly parallel ; the 

 second lobe very small, sometimes wanting. The plates are well formed, 

 simple, two between median lobes, two between first and second lobes, and 

 two beyond the second lobe. Spines as usual, and one on the base of each 

 lobe. Length about 1.5 mm. 



On Miscanthus sp. 



This species is allied to M. glovcri Pack, but differs in having an 

 unusually long, filiform female scale and a small second lobe. Named 

 after Mr. K. Ari, the governor of the islands. 



EXPLANATION OF PLATES. 



Plate X. 

 Ripersia ogasawarensis sp. no v. 



1. Abdominal end of female. 



2. Antenna of the same. 



3. Leg of the same. 



