MANUAL OF NATURAL HISTORY. 249 



III. S UB-ORDER. — Monomerous-Homoptera 

 (Mononiera). 

 Tarsi 1 -jointed ; antennae 6 — 25-jointed ; wings 



not areolate. 



7. Family. — Scale-Insects (Coccidae). Antennae, in 

 females, short, subsetaceous, inserted befoie 

 eyes, in males, more or less elongated ; mouth 

 in females a short 3-jointed proboscis, in males 

 obsolete; head in males, small, rounded; eyes 

 composed of about ten grains, placed irregu- 

 larly ; ocelli none. Males winged ; fore- 

 wings large, horizontal in repose, hind-wings 

 rudimentary; abdomen with two long anal 

 setae. Females apterous; body ovate, glo- 

 bose or shield-shaped, often densely clothed 

 with a white downy or waxy secretion. In- 

 fect various plants, and do great damage ; 

 some species produce a valuable dye (cochi- 

 neal). 



BEE-PARASITES. 



These singular little parasites are found, in the 

 larval state, in the bodies of wasps and bees, and 

 their oval white heads may frequently be observed 

 protruding from between the rings of the abdomen 

 in species of Andrena and other bees ; in their 

 imago condition they are short-lived, and fly with a 

 vacillating motion, making a sort of humming noise. 

 Their thorax is very long ; their eyes are large and 

 prominent ; their antennae are forked or branched ; 



m 5 



