1886.] E. T. Atkinson — On the Somopterous Family Ooccidae. 277 



4. Pulvinariaria : — Species in which the body is naked, but secretes 

 a cottony mass in which the eggs are laid. 



5. Lecaniaria : — Species in which the body is naked and there is 

 a secretion : often viviparous. 



Subdivision Lecanio-diasparia. 



L^caniodiaspites, Sign., A. S. E. F. (4 ser.) x, p. 273 (1870) ; Lecanodiaspis, 

 (5 ser.) i. p. 422 (1871). 



Lecanio-diaspidoB, Maskell, Trans. New Zeal. Inst, xi, p. 205 (1879). LecaniO' 

 coccidcB, pt., ibid, xiv, p. 223 (1882). 



This group includes those genera in which the adult $ is without 

 legs or antennae and is inclosed in a sac or envelope with a fringe around 

 the body more or less visible but always present : the upper portion of 

 this envelope appears to be formed by the larva and the lower portion by 

 the adult insect : the ? lays her eggs within this envelope and to make 

 room for them shrivels up towards the head so as to be hardly visible : 

 the young are sometimes viviparous. The group forms a link between 

 the JDiaspina and the Lecanina, having the shield-like form of the first 

 and the under-lip and abdominal lobes which characterise the second. 



1. The apodous adult ^ inclosed in a firm, globular, irregular, shell, 

 to which it is not attached : the young insect instead of the abdominal 

 lobes of Lecanium has the anal tubercles of a Coccus : the under- lip of the 

 larval ? is 2-jointed : — Pollinia, Targ. [Sign., 1. c. x, 274.] 



2. Shell or envelope more or less flat or convex, firm, and with a 

 regular double fringe around the naked body and on the dorsum a 

 number of tubiform spinnerets secreting a matter isolated like the tubes 

 but together forming a complete envelope : under-lip 1 -jointed : -45- 

 terolecanium, Targ. [Sign., 1. c. 276]. 



3. Shell almost smooth, compact, spherical above, flat beneath, 

 felted, with a well-developed fringe : adult $ without feet, antennae com- 

 pletely atrophied, their place occupied only by circular rings : anal 

 tubercle always present and for this reason Maskell makes it the type of 

 a new subsection Lecanio-coccidcd : — Planchonia, Sign. [1. c. 282]. 



4. Similar to Flanchonia without feet, but with the antennae pre- 

 sent thus connecting with the next group : — Lecaniodiasjpisj Targ. [Sign., 

 1. c. 285]. 



5. Maskell [Trans. New Zeal. Inst, xi, p. 208, 1879] subsequently 

 created a genus for an insect in which the young have the abdominal 

 lobes ; the shield is glassy and transparent, becoming waxy at a later 

 period and, in one species, felted at the latest stage : the <^ preserves 

 the feet and antennaD at least until after the young are produced :—Gteno- 

 chiton. 



