Maskell. — On New Zealand Coccidae. 129 



Of the genera given above, the following have been reported by me as 

 indigenous to New Zealand— Lecanochiton, Ctenochiton, Inglisia ; and several 

 species of Lecanium have been introduced. 



Strictly speaking, perhaps Ctenochiton, Vinsonia, Fairmairia, and Inglisia 

 might properly be united under the same genus Ceroplastes. Still there is, 

 I think, a sufficiently marked distinction between the tests of all to allow of 

 their separation ; at least, the distinction is quite as marked as that of the 

 genera Aspidiotus and Diaspis in another group. 



Subsection I. LiECANIO-DIASPIDiE. 



1st Genus, Lecanochiton, mihi. 



1. Lecanochiton metrosideri, mihi. 



(Trans., vol. xiv., p. 222.) 



Figs. 26, 27. 



I have found the male of this insect, last year. It has the generally 

 normal form of Lecanidae, the abdominal spike or sheath of the penis being 

 moderately long, straight, and stoutish. Antennae (fig. 26) of ten joints, of 

 which the first two are very short, the third much longer and expanded at 

 the tip, the fourth more than twice the length of the third ; the remaining 

 six almost equal, about the length of the third, but stouter and rounder, 

 being almost moniliform. All the joints but the first two have hairs. Foot 

 generally normal ; the tibia slightly expanded at its tip, with a strong spine ; 

 claw slender, with four "digitules, fine hairs (fig. 27). Colour dark red ; 

 thoracic band inconspicuous. Length, exclusive of spike, about J^- inch. 

 The test is white and glassy. 



When describing the female of this species in 1881 I had specimens 

 only from rata trees in Milford Sound, at the extreme south-west of New 

 Zealand. The male above described I found, with a great number of 

 emales, on the pohutukawa, near Auckland, almost at the extreme north. 

 This last tree, Metrosideros tomentosa, of the same genus as the rata, does 

 not grow, I believe, far south of Auckland. The occurrence of Lecanochiton 

 on it is therefore another instance of the persistence of certain Coccids on 

 certain trees. Milford Sound and Auckland are, I suppose, 700 miles 

 apart, but in both the insect attacks the same genus of plant. In the same 

 way Inglisia leptospermi may be looked for with almost certainty on the 

 manuka (Leptospermum) from one end of the islands to the other, and 

 probably both it and Lecanochiton confine themselves to one kind of tree. 

 Some Coccids, as the Dactyl opii, or Fiorinia astelice, or Lecanium hesperidum, 

 are not so particular. 



The antennae of the male Lecanochiton are peculiar, and distinguish it 

 from all Coccids known to me. As a rule, the four or five terminal joints of 

 the male antennae are elongated, in this insect they are nearly globular. 

 This character, and the employment of the second pellicle in the test of the 

 female, clearly differentiate the species, 

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