CRUSTACEA OF NORTHUMBERLAND AND DURHAM 

 PONTOPOLITES TYPICUS T. Scott. 



1894. Pontopolifes typicus, T. Scott, Twelfth Annual Report 

 of the Fishery Board for Scotland, p. 251, pi. viii., 

 figs. 9-17. 



1903. Pontopolifes fypiais, Brady, On Entomostraca found 

 at the roots of Laminariae. Trans. Nat. Hist. Soc. 

 Northumberland and Durham, new series, vol. i., p. 4, 

 pi. i., figs. 4-12. 



Found at the roots of Laminariae, Holy Island (G. S. B.) N. 



Nannopus palustris G. S. Brady. 



1880. JVannopns palustris, Brady (3), vol. ii., p. loi, 

 pi. Ixxvii., figs. 18-20. 



A few specimens found in pools of brackish water at Seaton 

 Sluice (G. S. B.) N. 



Platychelipus littoralis G. S. Brady. 



1880. Platychelipus littofalis, Brady (3), vol. ii., p. 103, 



pi. Ixxix., figs. 20-23, pi. Ixxx., figs. 15-19. 



In brackish pools at Alnmouth and Seaton Sluice (G. S. B.) 



N. 

 Ilyopsyllus coriaceus Brady and Robertson. 



1880. Ilyopsyllus coriaceus, Brady (3), vol. ii., p. 143, 

 pi. Ixxxii., figs. i-io. 



1899. Ilyopsyllus coriaceus, Brady, On Ilyopsyllus coriaceus 

 and other Crustacea taken at Alnmouth. Nat. Hist. 

 Trans. Northumberland and Durham, vol. xiii., p. 434, 

 pis. xi. and xii., fig. 8. 



This very curious and interesting species was first described 

 from specimens taken in the West of Ireland. It has since 

 been found at Arcachon in France, at Lymington in Hamp- 

 shire, and lastly on the muddy flats at Alnmouth, Northum- 

 berland. In all these cases the habitat has been similar — on 

 mud banks a little removed from the sea where the salinity 

 of the water is periodically reduced by admixture from 

 rivers. N. 



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