Prater II, 
Fig 
1. Types of anogenital rings. a, Diaspidine; b, Lecanidine; c, Acantho- 
coccide ; d, Dactylopide ; e, Monophlebide. 
2. Types of last abdominal segments of female. a, Diaspidine ; 6, Lecanidine ; 
c, Acanthococcide ; d, Dactylopide ; e, Monophlebide. 
3. Types of last abdominal segments of male, and sheath ofthe penis. a, Diaspi- 
dine; b, Lecanidine (Ctenochiton); c, Acanthococcide; d, Lecanidine 
(Inglisia) ; e, Dactylopide ; f, Monophlebide (Icerya). 
4, Respiratory system. a, spiracle of Lecaniwm (after Targioni) ; 6, spiracle of 
Coccus (after Targioni) ; c, diagram of arrangement of the four spiracles 
and the tracheal tubes (Lecanidine) (s. spiracles); d, spiracle and trachea 
of Coelostoma. 
5. Types of spines and hairs. a, anal serrated hairs (Aspidiotus nerit); 6, 
spiracular spines (Ctenochiton); c, marginal spines (Ctenochiton); d, 
lanceolate marginal spines (Inglisia) ; e, spines on anal tubercles (Rhizo- 
coccus); f, marginal spines (Hriococcus); g, conical spines (Hriococcus) ; 
k, marginal hairs (Dactylopius); m, hairs (Icerya); n, anal hairs 
(Caelostoma). 
