48 • MISCELLANEOUS PAPERS. 



Prothorax a little wider than long, and only slightly larger than 

 head, with an eniargination and thickening of the wall near center of 

 each side; clothed with numerous small spines. Memtlwrcw largest; 

 metathorax with sides almost straight and parallel except near poste- 

 rior edge, where they turn abruptly inward. Legti dark brown, fore 

 femora thickened, fore and second tibiae armed at tip with two strong- 

 spines, last tibiaB with several spines at tip, and with two rows of 

 smaller ones on inner side; each fore tarsus armed with a stout hook 

 and tooth; all legs tliickl}" set with small spines. Fore wings broadl}' 

 rounded at tips, with two longitudinal veins which unite with ring- 

 vein near tip; with three cross veins and the vestige of a fourth; 

 second longitudinal vein set with about twenty-six short, dark spines; 

 spines also present on first longitudinal vein, but white and not con- 

 spicuous. Anterior margin of wing without fringe; hind margin with 

 long, double fringe. Wings clear white, with dark brown longitudinal 

 band covering posterior half from near base to near tip. Microscopic 

 hairs on light-colored area white, those on darkened area brown. 

 Hind pair of wings clear white, excepting a small, light brown longi- 

 tudinal area near base; without veins; margined in front with short 

 and on hind edge with long simple fringe. 



Ahdomtn elongate-ovate, about one-third as wide as long. All seg- 

 ments uniform brown, with light brown intersegmental membrane, 

 splashed conspicuously with red pigment; segments 2 to 7, inclusive, 

 each with a dark cross line near anterior margin. Segments 1 to 8 

 without conspicuous hairs or spines; segment 9 bears eight long and 

 several smaller spines along posterior margin. The three last seg- 

 ments form the sheath for the large upturned ovipositor. 



Males are much smaller, with antenna3 almost uniform brown and 

 abdomen furnished with large clasping organs at tip. 



Descrlhed fi'o)ii nine females and three males. 



Food plant: California lilac {Ceanothus thyrsiHorxs). 



Habitat: Saratoga, Santa Clara County, Cal. 



(3) ^olothrips kuwanaii, variety robustus. 



Measurements: Head, length 0.16 nmi, width 0.20 mm; prothorax, 

 length 0.20 mm, width 0.23 mm; width of mesothorax 0.38 mm; total 

 body length 2.4 mm. Antennae: 1, 36//; 2, 60yw; 3, 114yu; 4, 69/<; 5, 

 69//; 6, 7, 8, and 9, 51//; total 0.38 mm. Color quite uniform dark 

 brown, with conspicuous red. pigment blotches; the third antennal 

 segment is light brown, with a touch of purple pigment at its base. 



A single specimen of this insect, which is about one-third larger 

 than A. Icuwa7iaii^ has been taken from an apricot tree near Cupertino, 

 Cal. 



