224 [October. 



The result of my further enquiry is to make me conclude that 

 both of these are variations of one species ; and as both were originally 

 described by the same author in the same year, I suppose that we must 

 take them alphabetically, and make hrasiliensis a var. of aspidistrce. 



The reason why I agree to combine them in one species is because 

 the pygidium and the terminal lobes are practically identical. The 

 reason why they seem to be varieties is because the texture of the 

 puparium, the relative proportions of the pellicles, and especially the 

 segments of the body, differ in the two. 



In 1893 Mr. Green sent me from Ceylon a form which he pro- 

 posed to name C. musscenda. He accepted my suggestion that this 

 was a var. of aspidistrce. The body has the characteristic dispropor- 

 tionate segments, but the terminal lobes differ slightly from the type. 

 It seems, therefore, that the species has two well-marked varieties. 

 But, on the whole, it is not as yet possible for me to abandon 

 hrasiliensis altogether ; and indeed there is much convenience, as it 

 seems to me, in recognising the variations of species, when these 

 variations affect at least more than one character. 



Articulation in Antennal Joints or the Males of some 



Species. 



In the same number of the Magazine (page 57) Mr. Newstead 

 describes the male of Bipersia fraxini (the apterous form), and men- 

 tions and figures an articulation of the 3rd joint with " a structure 

 like a ball-and-socket joint," remarking that this character has not 

 been hitherto observed in the Coccidce. 



The figure of this apterous form reminded me so much of the 

 aptei'ous male of Eriococcus hoherics, Mask., described in Trans. N. Z. 

 Inst., vol. xxiv, 1891, p. 26, and plate iv, that I have re-examined my 

 specimen of that insect and find that a similar articulation is distinctly 

 visible in its antenna. I ought, indeed, to have noted the point at 

 the time. However, the fact has induced me to examine a number of 

 male Coccids and their antennae, with the result that I find the articu- 

 lation present in several, but by no means a constant character. It is 

 exhibited in the following species in my cabinet : — 



Ckionaspis salicis* winged form, obscurely ; apterous form, clearly. 



Fiorinia stricta* obscurely ; F. astelice,* obscurely. 



Ctenochiton elwocarpi* obscurely. 



Solenophora corokicB,* obscurely. 



Flanchonia styphelim* obscurely. 



Friococcus hoherice, apterous form, clearly ; F. danthonim, clearly. 



Dactylopius herbicolm, clearly ; D. ericicola* obscurely ; D. albizzicB, clearly. 



