ENEMIES OF APHIDES. 171 



98. — Upper surface with fine, pale, regular 



pubescence, spines sub-elongate ... Co fios^ef /lus [Fieh.). 

 99. — Upper surface clothed with brown or 



black hairs, mixed with paler spines; 



sub-robust 

 100. — Antennae with the third and fourth joints 



very little thinner than the second ... Ifop/omacAus (Fieh.). 

 loi. — Antennae with third and fourth joints 



much thinner than the second ... J'Jacroco/eus (Fieh.). 



102. — Elytra shining, often clothed with pale, 



deciduous, scale-like pubescence 

 103. — Second joint of antennas shorter than 



the third ... ... ... Harpoceni (Curtis). 



104. — Second joint of the antenna longer 



than the third ... 

 105. — Tibiae with pale spines 



106. — Elongate, depressed, elytra parallel-sided Phyllis (Hahn). 

 107. — Not elongate and depressed, elytra 



with sides rounded ... .. Flesiodema {KenX..). 



108. — Tibiae with black spines 

 109. — Elytra clothed with short, deciduous, 



scale-like pubescence 

 1 10. — Second joint of antennae in both sexes, 



incrassated ... . . ... A iracto to mus (Fieh.). 



III. — Second joint of antennae, not incrassated Psalliis (Fieb.). 



1 12. — Elytra clothed with fine regular hairs... 



113. — Femora enthely pale ... ... Asa'odema (Reut). 



114. — Femora more or less dark, or spotted 



with black or brown . . . Plagiognathics (Fieb. ). 



The genus Capsus (Fab.) contains but two species found in 

 Britain, and in all probability both are aphidivorous, although up 

 to the present I have only observed, or been able to find, record 

 of the first. The genus consists of strongly characterised species, 

 dark-coloured black, red, and reddish brown in colour. The eyes 

 project greatly, and the second joint of the antennae is consider- 

 ably thickened towards its extremity ; the two last joints are not 

 more than half the diameter of the second, often less, and toge- 

 ther do not exceed it in length — generally are shorter. The elytra, 



