88 Transactions. — Zoology. 



turgipes the tubercles, though small, are conspicuously dark 

 and hard. 



Some Dactylopinse have the anal tubercles reduced nearly 

 to a mere dot ; in others they seem altogether obsolete. Ex- 

 amples may be seen in Dactylojnus adonidum, D. calceolaria, 

 Ripersia tomlinii, Pseudococcus astelia, &c., and perhaps the 

 time will come when somebody will separate under new sub- 

 genera the species with very minute from those with more 

 noticeable tubercles. 



The tubercles of D. nipcs are fairly large for the genus, and 

 they approach those of some Bipersicd ; and it was partly on 

 this account (in addition to the cottony processes) that in 1892 

 I stated that it might almost be a Bipersia, if other characters 

 did not forbid it. I cannot detect anj' Acanthococcid feature 

 in the insect. The figures which are given in Plate V. with 

 this paper will illustrate the differences of anal tubercles just 

 mentioned. They are taken at random from specimens in my 

 possession, and are drawn on the same scale for comparison. 



Dactylopius nipse. Maskell, N.Z. Trans., vol. xxv., p. 232; 



Newstead, Ent. Mo. Mag., Aug., 1893, p. 187. Plate V., 



fig. 19. 



The differences between the characters of this insect as 

 given by Mr. Newstead and myself may be tabulated as 

 follows : — 



Newstead. 

 Antentise always with seven joints. 

 Digitules of the claw slender, 

 nostrum (mentum) dimerous. 



Maskell. 

 Antennae seven or eight joints. 

 Digitules of the claw slightly dilated. 

 Rostrum (mentum) trimerous. 



Anal tubercles very large. I Anal tubercles very minufee. 



The first two of these may be considered as of no import- 

 ance, being frequently variable. 



As regards the third, I have re-examined three specimens, 

 nd in all I find the mentum trimerous. 



On the fourth character I have just made in the last few 

 pages some detailed observations. I consider the tubercles of 

 D. nipcE fairly large for the genus, but certainly extremely 

 minute and inconspicuous as compared with those of any 

 Acanthococcid. 



Dactylopius bromelise, Bouche. Signoret : Annales de [la 

 Soc. Ent. de France, 1874, p. 310. Bouche: Naturgesicht, 

 1834, p. 20. Plate VIII., figs. 15, 16. 



Adult female pale reddish-browai, elliptical, acuminate in 

 front, slightly convex, active, segmented ; length about yVi^^- 

 Dorsally there is a sHght covering of white meal, and on the 

 margins are, probably, some short cottony processes. An- 

 tennte of eight joints, of which the second and third are equal, 

 and longer than the fourth, fifth, sixth, or seventh ; the eighth 



