6() THE CANADIAN ENTOMOLOGIST. 



Dadylopius Farms iatue, Targ.. found on Acacia Farnesiana at 

 Vicenza, Italy, seems to be quite a different insect. I also have before 

 me a Dactylopius, in alcohol, on sugar cane from Mauritius, U. S. D. 

 A., Div. Ent., No. 6596, sent the Dept. by Miss Ormerod ; these specimens 



1 take to be the ones mentioned by Maskell in Trans. N. Z. Inst., 1896, p. 

 321 ; see also Insect Life, Vol. VII., p. 430. This Dacty/opius differs in 

 no material points from the Texensis. The general appearance of the 

 alcoholic specimens is the same, the measurements of the segments of the 

 antennae come within the limits given for Texensis : the femur is same 

 length as in the above ; tibia is a little longer, one being 160 /jl : tarsus is 

 also a little longer, 90 /x ; claw is more slender. I do not consider these 

 differences sufficient for separating them, but it may be that when com- 

 plete specimens of each are obtained there may be differences in colour, 

 ovisac, etc., which may separate them. It seems strange that a species 

 should be found in such widely-separated localities, and especially upon 

 such different host plants. 



Ripersia serrata, n. sp. 



Adult 9- Length, including fringe, about 2 mm.; width nearly 



2 mm. Shape broadly elliptical. Colour of dried specimens blackish. 

 There are three rows of beaded secretion on the dorsum : two lateral and 

 a median, with the dark body showing up more or less between them, the 

 median is most prominent. On the margin of the body is a fringe of 

 projections ; these consist of pairs of rods which become somewhat 

 shortened and dentate toward the anterior extremity, while those of the 

 jiosterior extremity of the body are longer and more distinctly rodlike ; 

 their length is usually less than half the width of the body. The 

 general appearance of this insect, with its secretion, suggests that of 

 Dactylopius pseudonipce., and species of Orthezia. 



Margin of epidermis bearing areas of several stout conical spines and 

 numerous glands ; numerous small glands scattered over the epidermis, 

 and also a few scattered hairs. 



Antennae rather slender, of six segments, the relative lengths rather 

 variable; first segment 20-25//. lo"g) second 22-28//, third 28-34 /x, 

 fourth 17-20//., fifth 20-25//., sixth 48-56//. Some observed formulae 

 are: 632514, 632154, 63(125)4, 63(25)14, 63(12)54. The segments 

 bear whorls of medium-sized hairs. 



Legs rather slender for a Ripersia; femur 85-100 /x long by 35 // 

 wide; tibia about 70 /x long; tarsus about .| - ;- long; claw rather stout; 



