Maskell. — Oil Coccididae. 149 



peculiar to Fagus ; at least, I have taken, at Picton, a blue 

 Lecanium on F. cliffortioides which seems entirely new ; but, 

 having never seen more than one specimen, I refrain from 

 attempting to classify it. 



Subdivision DACTYLOPID^. 

 Genus Dactylopius, Costa. 



Dactylopius cocotis, sp. nov. Plate IV., figs. 16-24. 



Adult female red, covered with mucli cottony secretion ; 

 broadly elliptical ; convex ; segmented, the segments con- 

 spicuous ; active ; length about lin. Anal tubercles not visible 

 in dorsal view, but they can be made out ventrally. They are 

 very small, and each bears a few short seta3. Anogenital 

 ring compound, with six hairs. On each segment of the body 

 are several short fine hairs, appearing at the edges like little 

 tufts. Antennae of eight joints — the second the longest ; fourth, 

 fifth, sixth, and seventh the shortest, and equal : all the joints 

 bear a few hairs. Feet with rather thick femur ; upper 

 digitules long fine knobbed hairs, lower pair very short fine 

 hairs ; femur, tibia, and tarsus hairy ; and on the trochanter is 

 one long seta. Mentum dimerous. 



Second stage of female similar to the adult, but a good deal 

 smaller, and with antennae of seven joints. 



Larva red, elongated, elliptical, distinctly segmented, 

 active ; length about J^in. Cephalic extremity distinctly de- 

 pressed. Antennae rather thick, with six subequal joints. 

 Feet and digitules as in adult. The anal tubercles are very 

 small and inconspicuous, each bearing a seta. x\t the edge of 

 each segment are three or four hairs. 



Male unknown. 



Hab. In Fiji, on Cocos nncifem (cocoanut). Mr. Holmes 

 tells me that it lives " on base of fronds while white and not 

 fully developed." 



This insect seems intermediate between the two New Zea- 

 land species D. calceolarice and D. alpinus. It is smaller, and 

 has a greater quantity of cottony and mealy secretion than 

 the former, and it has not the rich-red tint of the latter when 

 crushed. In the antennae and digitules, and absence of spin- 

 neret tubes or other appendages, it likewise differs from both. 



Dactylopius calceolariae, mihi, " Scale-Ins. of N.Z.," 

 p. 100. 



On some pieces of sugar-cane sent to me by Mr. Holmes 

 from Fiji were several insects which I cannot distinguish from 

 D. calceolarice. They affect, apparently, chiefly the " sheathing 

 base " of the leaves, in the same way as in New Zealand they 

 are found in a similar position on PJiormium tenax. Some 



