158 



Appendices to Fourth Annual Report 



The species would thus seem to be universally distributed over the 

 North Atlantic Ocean, though it was not met with by the 'Challenger' 

 Expedition. 



Nyctiphanes may be at once known from the other genera of the 

 Euphausiidse by the presence of a scale-like process on the basal joint of 

 the antennules, which is projected upwards, and would seem to form a 

 sort of screen for the eyes. 



Tribe Mysidea. 

 Genus Erythrops, G. O. Sars. 

 Erythrops pygmcea G. O. Sars. 



Nematopus elegans G. O. Sars, Beretning om en i Sommeren 1862 

 foretagen Zoologist Reise i Christianias ag Trondjems Stifter, p. 42. 



Nemato'pus pygmcea G. O. Sars, Beretning om en i Sommeren 1865 

 foretagen Zoologisk Reise ved Kysterne of Christianias og Christiansands 

 Stifter, p. 17. 



Erythrops pygmcea G. 0. Sars, Monographi over de ved Norges Kyster 

 forehommende Mysider, 1870, p. 33, pi ii. figs. 20-28. 



A very small species, about 6 mm. long, now added to the British 

 fauna; the specimens procured by the Fisheiy Board Laboratory at 

 Tarbert. 



Genus Mysidopsis, G. O. Sars. 

 Mysidop>sis gihhosa G. 0. Sars. 



Mysidopsis gihhosa G. 0. Sars, Beretning om en i Sommeren 1863 

 foretagen Zoologisk Reise, p. 28 ; Monographi over de ved Norges Kys- 

 ter for ekommende Mysider, 1872, p. 23, pi. viii. figs. 1-3. 



A single specimen taken by myself at Yalentia, Ireland, in 1870. 

 Three females sent for examination by the Fishery Board Laboratory 

 which were procured on a Zostera bed at Tarbert, Loch Fyne, 1885. 

 Now first recorded as British. 



Mysidopsis angusta, G. 0. Sars. 



Mysidopsis angusta G. 0. Sars, Beretning om en i Sommeren^ 1863, 

 foretagen Zoologisk Reise i Christ iania Stift, 1864, p. 30; Monographi 

 over Norges Mysider, 1872, p. 23, pi. viii. figs. 1-13. 



A drawing of this species is before me, which was made from a 

 specimen sent for examination by Mr T. EdAvard * from Banff in August 

 1863; a second British specimen has now (March 1886) been taken by 

 the Fishery Board at Tarbert, Loch Fyne. 



On the Norwegian coast it has been found in the Hardanger and 

 Christiania Fjords, and at Aalesund. 



Mysidops/s angusta has a very narrow, lanceolate antennal scale, which 

 is ciliated all round, and is about twice the length of the peduncle of the 



* This species is called in a catalogue of Crustacea at the end of Smiles' Life of a 

 Scotch Naturalist, ' Mysis mixta.' It is much to be regretted that that list should 

 have been published without revision. 



