1895.] 137 



ing on the same stone I bnve three species of A1(/(B (a Fuciis, and a red 

 and an olive kind), but these they do not touch I am quite sure. 

 Once only when examining them did they remain quietly for a second 

 or two, then one of the adults awoke to the fact, and running amongst 

 the larvae touched them on either side with right and left antenna 

 alternately, and the usual stampede followed instantly. 



7, Whiinple Street, Plymouth : 

 May IZth, 1895. 



NOTES ON SOME BRITISH AND EXOTIC COCCIDJE (No. 28). 



by j. w\ douglas, f.e.s. 



The male of Orthezia insigms. 



In this Magazine, vol. xxiv, p. 169 (1888), I described and figured 

 the male and female of this new species from specimens sent to me by 

 Mr. E. T. Browne, who found them on a, StrobiIa?ithes in the Economic 

 House at the Royal Gardens, Kew. The male, instead of the pencil 

 of long hairs at the caudal extremity of the body which is normal in 

 all the previously known species of the genus, had two long projecting 

 setse covered with waxen matter, and mainly on account of this 

 different structure I named the species " insiffnis." 



I received, in February last, from Mr. E. E. Green, Eton, Pun- 

 daloya, Ceylon, a reprint of a paper by him, published in the " Tropical 

 Agriculturist," Colombo, 1895, in which it is stated that this insect 

 has appeared in large numbers in the Botanical Gardens at Peradeuiya, 

 on " Lantana.''^ 



" Efforts are being made there to keep it in check, but as it has appeared on 

 Lantana in the neighbourhood, tiiere is no knowing where it will stop. It has 

 fortunately as yet shown no taste for either of our two most important products — 

 tea and cacao. Coffee, howerer, does not share this immunity, for trees of Liberian 

 coffee have been observed to be infested with the insect, and we have no reason to 

 suppose that the Arabian species will be less liable to attack." 



Mr. Green gives three figures of the female at different ages and 

 in different aspects, which represent that sex correctly, and one figure 

 of the male, which is certainly not the same as that I described and 

 figured. He says of his male : — 



" Fig. 5 is a greatly enlarged figure of the male insect. I believe this has not 

 previously been described. In ilr. Douglas' original description of the Orthezia, 

 the male of some other insect, probably that of the ' mealy bug ' {Dactylopius), 

 has evidently been erroneously tacked on to this species. The real male is a delicate 

 little fly ; slaty-grey in colour ; antenna; very long and slender, 10-jointed, the two 



