85 



The abdomen is of uniform color throughout, the sides are 

 furnished with long and strong hairs. On the dorsal side about one 

 half the distance from the base to the apex and to tlie sides, a 

 small black projection extends below the abdomen. It commen- 

 ces on the underside at the base 'of the abdomen and consists of two 

 lateral valves, elongated and forming the sheatlis of tlie oviposi- 

 tor, which is nearly cylindrical and, as far as can be discovered, plain. 



Habits. When the female of the P-ieudococcaa aceris is iu the 

 act of deposition, and concealed by the white covering, the parasite 

 discovers it and thrusting its long ovipositor through to the insect 

 beneatli deposits from six to twelve eggs iu the body. Tlie larvae 

 as soon as hatched feed upon their victim and pass through all stages 

 of life within the body, issuing at last iu tlie winged state. The 

 young lice are not attacked by the parasite and only when the 

 female is in the advanced state of deposition are traces of their 

 presence to be found From the external appearance no indication 

 is visible that they are beneath, the female aceris becomes dried 

 and hard even though the color remains the same. When the para- 

 sites are matured they break open the dried body and make their 

 escape. They can both leap and tly. 



NATURAL ENEMIES. 



A species of Syrphus fly is beneficial by feeding, while in the 

 larval state, upon the young lice and is in considerable numbers 

 upon the tree. From the cocoon made by the fly, I have bred a 

 species of Eulophus Geoff, of the Chakididae. I am unable at this 

 writing to identify these two species, neither am I satisfied that 

 they are new species. 



The Hyperaspis dgnaia, Olivier, is abundant as also the Chilo- 

 conis hivulnerus Muls. The Anatis 15 — punctala and a species of 

 Chryaopa are found in limited numbers, all of whom assist in the 

 destruction of the Pseudococcus acerin, 



NUMBER OF BROODS. 



There are three generations each year. In the winter mouths they 

 are found in the larval form in the crevices of the bark of the trunk 

 and at the base of the larger limbs, and are of two colors, red and 

 yellow. During the warm days of winter they crawl on the out- 

 side and are quite active. They make a lining in the crevices of 

 the cottony secretion and remain therein the greater part of the 

 time from October to May. They also convert the empty Chrysnpa 



