Sept. 1,1925 
Identification of the Mealybug 
487 
doubtedly a close relative of Pseudococcus citri (Risso), differing from 
specimens of the same stage of that species, so far as the writer can 
determine, only in the possession of relatively large, short tubular 
ducts scattered adjacent to the cerarii, at least in the abdominal 
region. Since it is not possible to identify this definitely, it has been 
excluded from further consideration as part of the type material of 
the species. 
(3) The three Maskell slides from Traversia therefore become the 
types of Dactylopius calceolariae of Maskell and the redescription 
given below under the name Pseudococcus calceolariae (Maskell) has 
been drawn up from the three adult females, all imperfect, present 
on these slides. 
(4) The species mentioned by Maskell in 1883 as having been 
found on Danthonia at Stewart Island is distinct from both of the 
species already mentioned, and since it has not been recognized as 
identical with any of the described species in the group, it has been 
described here as new under the name Trionymus danthoniae. 
(5) No specimens definitely known to have formed a part of the 
material on which the 1883 record on Phormium was based are 
available, so the actual status of this record is not determinable. 
However, in view of the widespread occurrence on Phormium of 
the species discussed in the next paragraph, it seems a reasonable 
assumption that the portion of MaskelTs 1883 record referring to 
“ calceolariae on Phormium” actually refers to the following species. 
(6) MaskelTs 1887 record on Phormium tenax from Christchurch 
is considered to be plainly represented by the single slide bearing 
two adult females, dated 1886. The specimens on this slide are 
specifically identical with some, without data other than name, 
mounted from the Maskell general collection, and with specimens 
on Phormium tenax from Berkeley, Calif., and despite certain ap¬ 
parent descrepancies, agree well with the description of Pseudococcus 
diminutus published by Leonardi. All the published records of P. 
calceolariae Mask, from the host Phormium tenax can therefore, in 
all probability, be referred to LeonardTs species diminutus . 
(7) The specimens on sugar cane from Fiji, the record of which 
was published by Maskell in 1890, are not definitely represented by 
any of the specimens available for examination, and it is therefore 
impossible to establish with certainty the identity of the species to 
winch this reference applies. In view of the wide distribution of 
the elongate gray mealybug of sugar cane, which has almost always 
been designated oy the name calceolariae by other writers, it is a rea¬ 
sonable, although at present unverifiable, assumption that MaskelTs 
specimens on sugar cane from Fiji were this species, that is, the 
calceolariae on sugar cane of authors. To this species the writer, 
in making identifications, has applied the name boninsis Kuwana, 
since the description given by Kuwana, so far as it extends, entirely 
coincides with specimens of this elongate gray sugar-cane mealybug 
already reported from so many parts of the world that its eventual 
discovery may be expected practically everywhere that sugar cane 
is grown extensively. 
(8) The Maskell slide of a larva dated 1893 evidently is the 
species reported from Napier on Cordyline australis . None of the 
other specimens available can be definitely associated with this 
record, and the identity of the species can not be determined with 
