PeoT J 
No. XII—NOTES ON THE COCCIDZ COLLECTED BY ‘THE PERCY 
SLADEN TRUST EXPEDITION TO THE INDIAN OCEAN: SUPPLE- 
MENTED BY A COLLECTION RECEIVED FROM Mr. R. DUPONT, 
DIRECTOR OF AGRICULTURE, SEYCHELLES. 
By E. Ernest GREEN, F.L.S., F.Z.8., Government Entomologist, Ceylon. 
(Communicated by J. Srantey Garpiner, M.A., F.L.S.) 
(Plate 21 and Text-figure 47.) 
Read 20th June, 1907. 
THE most noticeable feature of the collections is the comparatively cosmopolitan character 
of the species. Nota single peculiar species was found amongst the collection made by 
the Gardiner expedition, while—with the exception of Ceroplastes tenuitectus, which 
appears to be very distinct—the new species described from the Dupont collection are 
all closely allied to well-known and widely distributed forms. Mytilaspis auriculata 
belongs to the group of which JZ, pomorum may be recognized as the type, the species of 
which are very difficult to separate. Pulvinaria antigoni differs from psidii principally 
in a modification of the marginal hairs. Another species, Lecaniwm frontale, is so far 
recorded elsewhere from Ceylon only ; but it must be remembered that our knowledge 
of the Coccidz of the tropical regions is still very incomplete. The long series of 
Lecanium tessellatum in Mr. Gardiner’s collection provides a very complete chain of 
links connecting Signoret’s type with Z. perforatwm of Newstead and L. subtessellatum, 
mihi, proving—what I have for some time suspected—that these reputed species are 
specifically inseparable. 
In the following catalogue of species, those marked with an * are represented in the 
Gardiner collection, while the mark + indicates the species collected by Mr. Dupont. 
he remaining (unmarked) species have been previously recorded from the area under 
consideration. 
The generic names employed are those that have been in general use to within 
the last few years. A number of very radical changes in the nomenclature have 
been put forward (principally by American entomologists) and brought together in 
Mrs. Fernald’s ‘Catalogue of the Coccidze of the World’ (1903); but, as there will 
probably be still further and (I hope) final changes in the ‘Genera Insectorum’ (now 
in course of publication), I prefer to retain for the present the well-known names with 
which we have become familiarized. 
