1P21.] 



121 



reaching almost to the middle of the metathorax. Pro- and mesothorax incom- 

 pletely separated ; prothorax with a gland contained in a small black area 

 laterad of the median line ; mesothorax with a lonoitudinal black streak 

 laterad and a black area on the margin. Metathorax with a black, latero- 

 frontal area and also a marginal one; the head, pro + mesothorax, and 

 metathorax about equal in length. Abdomen with the whole of the upper 

 surface uniformly covered with small, circular pores, which in cleared speci- 

 mens become very faint towards the iniddle line and ultimately disappear; 

 they are very evident in the chitinised areas and on the whole of the last two 

 segments. Cornicles mere poi'es on the 7th abdominal segment. Cauda 



Fig. 1. — Thripsaiihis cyperi. A, Apterous 2- B. Cauda, anal lobes, and g-ona 

 pophyses. C. 3rd segment of antenna. Sipha littoralis. D. Apterous 9 • 

 E. Antenna. Atheroides serndatus. F. Antenna of cj". 



knobbed ; anal plate bilobed ; r/onapophyses 2. Whole body practically 

 glabrous. Legs fairly long, tibia only moderately hairy ; length of hind leg : 

 femur 6 mm., tibia '8 mm., tarsus "18 mm. 



Total length 3-5 mm., breadth 1-2 mm. 



Alate Female. — Very elongate, narrow, dull green. Antennae black, 

 proportions of the segments being 5, 4, 26, 15, 15, the last segment with its 

 spur is broken off ; segment III has 13 sensoria arranged alon? its whole 

 length, either circular or elliptical, each double contoured. Head brown, 

 rather long and narrow, with a quadrate projection in front and two large 

 lateral sensoria. Eyes without the ocular process. Prothorax with a wide 



At 



