INSECUTOR INSCITI^ MENSTRUUS 91 



middle, and two more near tip ; posterior vein with two or 

 three bristles in apical half. 



Abdomen with last segment blunt, nearly as wide as long, 

 not divided above ; bristles light brown, normal to the genus. 



Measurements of holotype (female): Length 0.876 mm.; 

 head, length 0.075 mm., width 0.133 mm.; eyes, length 0.054 

 mm., width 0.030 mm.; prothorax, length 0.108 mm., width 

 0.158 mm.; pterothorax, length 0.204 mm., width 0.208 mm.; 

 abdomen, width 0.240 mm. ; fore wings, length 0.594 mm., 

 width at middle 0.034 mm., near base 0.053 mm. 

 Antennal segments : 12 3 



Length (li) 19 .34 40 



Width (\.i) 21 24 18 



Total length of antenna, 0.224 mm. 



Described from 34 females taken by T. V. Ramakrishna 

 Aiyar on castor and chillies shoots, at Coimbatore, India, 

 March 13 and 14, 1916. 



Readily known by the abdominal coloration. 



PERISSOTHRIPS. new genus 



Body almost free from sculpture. Head short, broad, and 

 exceedingly small, nearly twice as wide as long. Antennae 

 eight-segmented, the second segment large and subequal in 

 length to third and sixth ; segments 3 and 4 with forked sense 

 cones. Mouth cone very long and slender, about twice the 

 length of head and surpassing base of prosternum ; maxillary 

 palpi three-segmented, basal segment longest, middle segment 

 shortest. Prothorax long, about three times the length of 

 head, slightly widened behind ; posterior angles with one pair 

 of outstanding short bristles. Legs short and stout ; fore 

 tibiae of male slightly prolonged at apex within and with a 

 minute acute tooth, that of female angulate and with a small 

 bristle arising from the apex of the angle. Wings slender, 

 weakly fringed, fore pair with two indistinct longitudinal 

 veins. Abdomen of female sharply conical at tip, the last 

 three segments long and more heavily chitinized ; male with 



