202 
The Irish Naturalist. 
September, 
Another order of Crustacea — the Copepoda (littoral species 
and fish-parasites) — are dealt with by Mr. JOvSeph Pearson, who 
during his too sbort sojourn at the L^arne Marine I^aboratory 
gave much study to this group. He points out that 
previous observers have paid most attention to the pelagic 
Copepoda, and that discoveries may be expected among the 
bottom-haunting species. The present list^ includes 89 free 
living, shore-haunting copepods and 25 lish-parasites. 
We owe to the labours of Messrs. K. W. L,. Holt and W. M. 
Tattersall two important papers^ on Schizopoda from the 
"Atlantic slope," the first of which has been already mentioned 
in this Journal.^ The net result of these two memoirs is the 
addition of twenty-six species to the British and Irish marine 
fauna, of which twelve are new to science, four of these being 
referable to new genera. Several new oceanic species are 
described which were obtained beyond the 1,000 fathom line, 
and are therefore excluded from the " Irish marine area." 
Among the Euphausiacea the additions are Euphausia 
Mttlleri, Claus, a southern species ; Lanei, a new species 
(obtained off Achill); Thysa^iopoda distijigtienda, Hansen, an 
Azorean species ; T. acutifrons, a new species dredged off Mayo 
in 600-1,000 fathoms ; Nematobrachion boopis, Caiman ; 
Stylocheiro7i Stihmi, G. O. Sars ; 6*. abbreviaium, G. O. Sars; and 
Thysanoessa gregarla^ G. O. Sars, widespread oceanic species. 
Still more remarkable are the discoveries among the Mysi- 
dacea. G7iathophaiisia zoea, Will.-Suhm ; Eiccopia sculpticatida, 
Faxon ; E. tcngtiiculata,. Will.-Suhm ; Katerythrops OceancSj a 
new species ; and Chu7iomysis diadema^ the type of a new 
genus, are all oceanic in habitat. Meterythrops picta is a new 
species found off Achill, and from the same region come three 
new generic types — Dactylerythrops dactylops, Hyperythrops 
serriventer, and Paramblyops rostrata. Euchaetojneta Fowleri^ 
Holt and Tatt., formerly taken in southern and western 
North Atlantic waters, is now brought within the Irish 
Joseph Pearson. A List of the Marine Copepoda of Ireland. Part i. 
Littoral Forms and Fish Parasites. Fisheries^ Ireland^ Sci. Invest. ^ 1904, iii., 
[1905]. 
2 E. W. L. Holt and W. M. Tattersall. Schizopodous Crustacea from the 
North-east Atlantic slope. Fisheries, Ireland^ Sci. Invest., 1902-3. iv., 
[1905]. Supplement, ib., 1904, v., [1906]. 
• /, Nat., xiv., 1905, p. 116. 
