CRUSTACEA OF NORTHUMBERLAND AND DURHAM 289 



Idotea linearis (Linne). 



Seaham in 10 fathoms, 1861 (G. H.) D. 



Professor Sars has changed the usual speUing of this genus 

 Idotea to Idothea. Such a change is not desirable, first because 

 Fabricius spelt his genus Idotea*, and secondly because there 

 is a genus Idothea among the Mollusca. 



Fam. 2.— CIROLANID^ 



EuRYDiCE PULCHRA Leach. 



Occasionally taken in the tow-net in sandy bays near shore. 

 It seems to be more gregarious in habits than are the more 

 recently described species of the genus, which moreover are 

 usually found in deeper water. N.D, 



Fam. 3.— LIMNORIIDyE 



LiMNORIA LIGNORUM (Rathkc). 



A very elaborate paper was published in 1893 by Dr. P. P. 

 C. Hoeck on the structure of this species, and on the damage 

 done by it in Hollandj. It is common on the Northumberland 

 and Durham coasts, and often does much injury to piles, 

 etc. N.D. 



Fam. 4.— ARCTURID^ 

 AsTACiLLA LONGicoRNis (Sowcrby). 



The Arcturt^s gracilis of Goodsir and of Bate and Westwood 

 is the male of this species. 



Not uncommon off the coast. N.D. 



ASTACILLA INTERMEDIA (Goodsir). 



1 84 1. Arctii.7-us intermedins, H. Goodsir, Edinb. New 

 Philos. Jour,, vol. xxxi., p. 309, pi. vi., figs. 1-3. 



1867, Arcttirus intermedius, Bate and Westwood, Brit. 

 Sessile-eyed Crustacea, vol ii., p. 271. 



• It is curious that Fabricius (Ent. Syst. Supp., 1798) in the body of his work 

 spells his genus Idoiea, but in the index it appears as Idothea. 



t Report der Commissie uit de Koninklige Akademie von Wetenschappen. 

 Limnoria lignorum. Amsterdam, 1893. 



