COCCIDJE. 



233 



blue. The legs are similar to those of other coccid larvae. The body 

 at first sight appears to be in one piece, but the abdomen is segmented 

 and fluted, each flute terminating in a single hair. 



The species illustrated on hornbeam, on -which I tried to make a 

 few observations, was taken from a tree in my garden in High Legh, 

 Cheshire. I found the larvae hatched out about the middle of June, 

 but I failed to discover their presence again until September. It is 

 true that the bark of the particular tree in question was very much 

 covered by the alga known as Pvotococcus viridis, and would thus 



provide ample shelter and covert 

 for the creatures. By that time 

 they had enlarged considerably, 



Fig. 218. Antenna of 

 Pseudococcus aceris. 

 (Camera-lueida sketch.) 



Fig. 220. Rostrum o/ Pseudococcus 

 aceris. (Camera-lueida sketch.) 



Fig. 219. Leg of Pseudococcus aceris. 

 (Camera-lueida sketch.) 



and could be found in comparatively large numbers swarming 

 on the lower region of the trunk. At this stage they are still 

 larvae, but the sexes then assert themselves and separate. The males 

 remain in the south or lee side of the trunk, and the females 

 go higher up, on the branches, generally in the cleft. According 

 to observations made daily with this species, on a laburnum-tree, 

 IS r ewstead says the females reawaken in March, a few days before the 

 males, descend the trunk, copulate, and return to the branches. This 

 seems all the more remarkable inasmuch as the males have wings and 

 well-developed legs, and could easily move in the direction of the 

 female residence. In May the females spin their cocoon, which 



