88 LECANIUM LONGULUM. 



Habitat. On stems (rarely on the leaves) of 

 Acacia catechu, from Mr. James O'Brien, Harrow ; on 

 the same plant, Anona muricata, and Myrica fragifera, 

 from the Boyal Botanic Society's Gardens ; and on 

 Averrhoa carambola and Spathopkyllum blandum, from 

 the Royal Gardens, Kew, where, in 1897, Mr. E. E. 

 Green found it on Cassia fistula. The only living 

 examples which I have seen were found on the slender 

 stems and leaves of a species of Euphorbia at Ince, 

 Cheshire. It is a well-protected species, its colour and 

 form being scarcely distinguishable from the bark of 

 its food-plants. My description of the structural 

 details of the species is made from types kindly 

 supplied by Mr. J. "W. Douglas. I find no variation 

 in the number of antennal joints, which is rather re- 

 markable, seeing that Maskell's examples of his L. 

 ehirimolim had but seven joints to the antennae. An 

 examination of Mr. Douglas's types of L. anyustatum 

 proves that they are rather small specimens of L. 

 longulum. They were sent to Mr. Douglas from the 

 Royal Botanic Society's Gardens, Regent's Park, on 

 Anthurium scherzerianum. 



Distribution. Its occurrence in England on tender 

 exotic plants points to a tropical or subtropical origin. 

 Mr. Cockerell considers it to be a native of the West 

 Indies, where it is widely distributed and said to be 

 very fairly common. Mr. Maskell records it from the 

 Fiji and Sandwich Islands, Mr. Green from Ceylon, 

 and Mr. King from Massachusetts, U.S.A., under glass. 



EXPLANATION or THE PLATE. 



PI. L, fig. 11. Young adult female at period of 



gestation. X 10. 



Fig. 12. Antenna of adult female. X 140. 

 Fig. 13. Portion of dorsal dermis with derm-cells. 



X 140. 

 Fig. 14. Leg of the adult female. X 140. 



