g2 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



nearly to the 3rd coxae. Thorax black. Primary wings 3 mm. 

 long. Legs pale with the distal ends of the femora and tibiae 

 and all of the tarsi black. Abdomen green with dark lateral 

 and dorsal spots and with four pairs of marginal tubercles 

 visible. Cornicles black, faintly imbricated, slightly widest at 

 the base but almost cylindrical, somewhat incurved, 0.3 mm. 

 long. Cauda black, 0.15 mm. long. 



Apterous viviparous females — Fifteen good specimens. 

 Average length 1.35 mm., width 0.85 mm. Prevailing color 

 green. Antennas dark except I, II and the base of III which 

 are pale; lengths of articles: I, 0.05 mm.; II, 0.07 mm.; Ill, 

 0.32 mm. ; IV, 0.23 mm. ; V, 0.21 mm. ; VI, 0.5 mm. (base 0.1 

 mm., filament 0.4 mm.); total 1.38 mm. Rostrum reaching 

 midway between the 2nd and 3rd coxae. Cornicles pale dusky 

 with darker tips, faintly imbricated, 0.33 mm. long. Cauda 

 color of body, 0.17 mm. long. 



Host plant — Forms pseudogalls on the edges of the leaves 

 of the Japanese pear. 



Locality — Omori, Tokyo. 



Date of collection — May 12, 1913. 



Collection number — 28. 



Chaitophorus japonica, new species 

 Figure 23 



Winged viviparous female (Type) — Selected from three 

 good specimens. Length 1.4 mm., width (of paratype) 0.6 

 mm. across the thorax. Prevailing color shiny black. Body 

 covered with long hairs. Head black. Antennae dark with all 

 of III and the bases of IV and V pale, with numerous conspicu- 

 ous long hairs along the upper margin; lengths of articles: I, 

 0.05 mm. ; II, 0.04 mm. ; III, 0.43 mm. ; IV, 0.19 mm. ; V, 0.19 

 mm.; VI, 0.33 mm. (base 0.10 mm., filament 0.23 mm.) ; total 

 1.23 mm. Sensoria large, circular and distributed along the 

 full length of III, there being 10 on the left member (right 

 missing). Paratypes show a variation of 8, 6, 14 on III; the 

 other articles have the usual number. Rostrum extending 

 slightly beyond the 2nd coxae. Front wings 2.4 mm. long. 



