1886.] E. T. Atkinson— Ow the Homoptcrons Family Coccidae. 295 



times only 10, each joint becoming more and more long from base to 

 tip : eyes with facettes, below them an ocellus : abdomen slightly 

 lobed on the sides : genital organ very long, twisted several times and 

 like a portion of the intestine accidentally protruded : above and at the 

 tip of the 5 — 6 segment are a number of spinnerets forming transparent 

 fragile filaments in shape of a tuft that extends well beyond the 

 abdomen : feet long, tarsus one-third shorter than the tibia and having 

 at the tip a small supplementary articulation ; a single claw with a 

 hair on the inner and outer face : halteres broad and stout with a small 

 hook at the extremity, on the side. The 9 has 10-jointed antennee, of 

 which the first is very broad and short, the second as broad as long, 

 and the rest increase in length and diminish in breadth : rostrum a 

 little below the insertion of the first pair of feet, which are like the 

 rest. The single species recorded under this genus comes from Aus- 

 tralia [Sign., A. S. E. F. (5 ser.) v, p. 37J., 1875]. 



Porphyrophora, Brandt, has, in the d, antennee moderately long, 

 9 — lO-jointed : eyes very large with facettes, touching each other be- 

 neath : first pair of feet short ; tarsi, tibia3, and claws not longer than 

 the femora ; the claw soldered to the tarsus ; the other feet as usual, 

 but no digitules, though all the tibiae and tarsi have some spiny hairs 

 on the internal margin : 5 — 6 segments of the abdomen, above and 

 towards the upper margin, have a band or row of spinnerets whence 

 arise a large quantity of light, transparent filaments that form a tuft 

 extending well beyond the abdomen : the latter has at the anal extre- 

 mity a stout elongate tubercle furnished with a hook- shaped style of 

 which the free portion is fine and long : wings very large : adult 9 is 

 proportionately much stouter than the cf and has no trace of a rostrum : 

 in the larva, the rostrum appears between the intermediate pair of legs. 

 The species hitherto recorded of this curious genus belong to Europe 

 and Asia Minor and include the P. polonica and P. hamelii which are 

 used for dyeing [Sign., A. S. E. F. (5 ser.) v, p. 377, 1875]. 



Margarodes, Guilding, includes a curious West- Indian species which 

 is inclosed in a calcareous, nacreous, envelope of such consistence as to 

 be used as a bead for necklaces, hence its vulgar name perle de terre 

 [Sign., A. S. E. F. (5 ser.) v, p. 385, 1875]. A species has been recorded 

 from S. India. Specimens of Indian and W. Indian puparia are in 

 Indian Museum. • 



Orthezia, Bosc. [= Dorthesia] has the 9 apterous and the d* winged 

 and eyes with facettes, but varies so much in the different stages of 

 its existence that it is necessary to study the whole series before a par- 

 ticular form can be assigned to its proj^er stage in the development of 

 the insect. The young larva has 6 joints in the antenna), the larval 

 38 



