coccid.e. 229 



small beetle, Brachytarsus varius ; and a small dipteron, Diplosis 

 latibulorum, Winnz. 



The life-history somewhat resembles that of a Lecanium, but the ana- 

 tomical structure is altogether different and quite unique. Newstead 

 says the eggs may be found in the pouches at the beginning of June, 

 and the larvae hatch towards the end of July. This observation was 

 made in Cheshire, and therefore differs from notes I have made here 

 in Northumberland viz., to the effect that on August 2, 1900, I 

 found eggs, and on September 1, same year, I also found eggs, and 

 placed the insect containing them in a small box, but the observation 

 was neglected until September 21, when the larvae, from those of the 

 latter date which had hatched out were all dead. The larvae hide 

 themselves rather effectually on the young twigs during the winter 

 months. Hitherto no males have been found. The creature has an 

 internal double-chambered marsupial pouch, into which she places her 

 eggs for incubation. This peculiar structure can best be seen by em- 

 bedding the body in paraffin wax and making sections by means of a 

 microtome. Legs, antennae, and other appendages are not found after 

 boiling the body in potash, but a peculiar rough tesselated surface 

 can be seen after the chitinous body has been prepared for microscopic 

 examination. 



I found this species very plentifully at Pollok, near Glasgow. As 

 a rule, it is very common on sickly specimens which are considerably 

 injured by Chermes abietis. In healthy spruce-trees no appreciably 

 ill effect accrues from the presence of this scale, but the more weakly 

 trees, which act as shade-bearers, are often killed outright by this 

 species and the associated Chermes. 



Sub-family DACTYLOPIIN^l. 



" Adult females active or stationary, naked or covered with mealy, 

 cottony, waxy, horny, or glassy secretion. 



" Antennae and legs either well developed, rudimentary, or entirely 

 absent. When present, the last joint of the antennae is usually 

 much longer than the penultimate. Anal lobes generally small or 

 rudimentary. 



" Larvae, exhibiting anal lobes and setiferous anal orifice, similar 

 to those of the adult female. 



" The females of this division are distinguished chiefly by the 



