1921.] 



147 



Adult female {a) elonp;ate-ovate ; anal lobes reduced and scarcely differ- 

 entiated. Antenna {d) 7-jointed, the joints relatively short and stout, 3rd 

 longest. Eyes well defined. Legs comparatively small ; tarsus approximately 

 equal to tibia (e) ; claw long and slender ; ungual and tarsus digitules slender, 

 very slightly knobbed at extremity ; a long slender seta on the trochanter, and 

 two or three setae on each of the other segments of the limb. Posterior 

 extremity (b) with a pair of long and slender caudal setae ; anal ring with 8 

 setae, the longest of which is only about one-quarter the length ot the caudal 



■ig. 1. — Eriococcns glyceriae. Adult 9 • «■: ventral view, X 30 ; h, posterior 

 extremity, X 220 ; c, marginal spines, X 450 ; d, antenna, X 220 ; e, mid leg, 

 X 130. 



setae. Spines (c) stout, cylindrical, truncate; from 8 to 11 on each side, con- 

 fined to the margins of the terminal four or five segments of the abdomen (see 

 iig. 1, a). The anal segment (comprising the anal lobes) bears 3 spines on each 

 side ; the penultimate segment carries 3 (rarely 4) ; each of the preceding three 

 segments usually has a single spine only, though a second is not infrequently 

 found on the antepenultimate segment, and the uppermost spine of the series 

 is often absent. Derm with numerous thick-rimmed pores, more crowded 

 towards the posterior extremity. A transverse series of short setae across the 



o2 



