276 E. T. Atkinson — On the Homopterous Family Coccidse. [No. 3, 



first are directed towards the anal extremity and tlien turn backwards 

 tlirougli a groove at their source. In the Diaspina, the rostral filaments 

 are entirely free from their source ; here in addition they are furnished 

 with a one-jointed lower lip. In the Goccina, this lower-lip is 2 — 3- 

 jointed. The antennae are small, in the young insect and 6 — 7- jointed ; 

 in the adult 7 — 8-jointed ; the two first joints are stout, short, the third 

 generally longest, the last the most pubescent. Feet short, tarsi 

 one-jointed, with a single claw accompanied by four hairs (digitales), 

 of which the two upper are long and end in a small knob and the two 

 lower are short and clavate. The body is usually ciliated and in some 

 genera fringed. The (? in the larval and pupal stages is like the ^ ; 

 before entering the adult stage, a whitish or sometimes felted waxy 

 pellicle is formed above which is detached from the body and beneath 

 which appear the abdominal filaments. The adult S has usually a 

 small head, angular in front and on the sides, with several eyes and 

 ocelli : in L. aneris there are ten in all, in others four, six, or eight : the 

 antennae are large and pubescent, usually ten-jointed, of which 4 — 6 

 joints are the longest, the last joint has sometimes hairs differing in 

 size and shape : thorax more or less large, more or less gibbous with a 

 band (apodema) more or less prominent, and often darker than the rest 

 of the thorax : wings membranous, hyaline, pubescent, with a single 

 vein, which bifurcates near the base and sends one branch to the costal, 

 the other to the internal margin : in place of hind- wings are processes 

 similar to the halteres or poisers of the Diptera which end in 1 — 3 

 bristles, curved at the tip : the abdomen ends in a tubercle furnished 

 with a process directed downwards and protecting the genital organ : 

 on each side are two long cottony threads secreted by the spinnerets, 

 accompanied by several rather long hairs around which this cottony 

 matter adheres. 



The following subdivisions of this sub-family are suggested by 

 Signoret or by his descriptions : — 



1. Lecaniodiasparia : — Species having the shield-like form of the 

 Biaspina and the anal lobes and lower lip of the Lecanina : inclosed 

 in a complete sac or envelope : adult ? without legs or antennae or 

 the latter only represented by stumps : the ? after laying her eggs 

 within the envelope shrivels up towards the head : young sometimes 

 viviparous. 



2. Signoretiaria : — Similar to the preceding, but legs and antennas 

 present in the adult 2 . 



3. Geroplastaria : — Species in which the adult ? is covered with 

 a waxy layer having the tesselated appearance of the carapace of a 

 tortoise. 



