Ey 39) | 
VI. 
ON TWO NEW IRISH SPECIES OF COLLEMBOLA. 
By GEORGE H. CARPENTER, B.Sc., M.R.I.A., Professor of 
Zoology in the Royal College of Science, Dublin. 
[Prats IT.] 
[Read, Ducemprr 19; Received for Publication, Decrmpyr 22, 1905; 
Published, FEsruary 7, 1906.] 
For the last three years it has been the practice for the agricultural 
scholars at the Royal College of Science to spend a week or ten 
days of the summer term on a series of field-expeditions in different 
parts of Ireland, travelling to a fresh centre each evening. In 
June, 1905, being one of the staff privileged to join this inter- 
esting natural-history tour (during which open-air instruction 
in Geology, Botany, and Zoology appropriately follows a session’s 
- work in the laboratories), I took the opportunity of adding to the 
material which I have, for several years past, been accumulating 
towards a study of the Irish apterous insects. The rate of travel, 
necessarily rapid, limited the time available for collecting. It is 
all the more satisfactory to find that two Springtails—one from 
Fair Head, County Antrim; the other from the shores of Lough 
Melvin, County Leitrim—appear to belong to species hitherto 
undescribed. It seems advisable, therefore, to publish descriptions 
and figures of these without further delay. Both insects belong 
to the family Entomobryide. That from Lough Melvin is an 
Isotoma, closely allied to our common J. viridis (Bourlet). The 
Fair Head springtail is an Hntomobrya of somewhat aberrant 
structure, forming in many respects a connecting-link between 
typical members of that genus and Orcheselia. 
