CRUSTACEA OF NuRTHUMHERLANT) AXD DrimAM 

 PORCELLIDIUM I- IMI'.RIATU.M ClaUS. 



1863. PorceUiditiiii fiinbiiattiiii, Claus (2), p. 140. pi. xxii., 



fig. I. 

 1880. PorccUidiuin fiiitbrialiiin, Brady (3), vol. ii., p. 167, 



pi. Ixx., fi^s. 1-4. 

 1904. Porcellidhiiii Jiinbrialuiii, Ci. O. Sars (6), vol. v., p. 76, 

 pis. xliv., xlv. 

 Found chiefly on tlie fronds of Laniinariai between tide- 

 marks, but "sometimes taken by the dredge in considerable 

 numbers where decomposing alg?e and other vegetable matters 

 are deposited.' In our district the only record is Aln mouth 

 (G. S. B.) N. 



AsPiDiscus LiiTORALis G. O. Sars. 



1904. Aspidisciis litloralis, G. O. Sars (6), vol. v., p. 79, 

 pis. xlvi. and xlvii. 



A beautiful species, easily recognized when well grown by 

 a brilliant crimson patch occupying the centre of the body. 

 Its favourite habitat, as in the case of many of the flattened 

 or depressed Copepoda, is on the fronds of Laminariic. Here 

 it often occurs very abundantly at almost all points of our 

 coast. In the '"Monograph of British Copepoda "■ it was 

 erroneously identified with Aspidiscvs fasciahis Norman and 

 Porcellidium fascia/um Boeck. Professor Sars, however, has 

 shown that it differs from both these species, and has proposed 

 for it the specific name liltoralis. 



PSAMAIHK I.ONCICAUDA Philippi, 



1840. Psanujtlw loiii:,iiavda, Philippi, U'eignian. .\rLhiv fiir 



Xaturgesch., p. 189, pi. iv., fig. i. 

 1880. Scittellidiuin /islwides, Brady (3), vol. ii., p. 175, 



pi. Ixviii., figs. I- 10. 



1905. Psainathe loiii:;icaiida, G. (). Sars (6), vol. 5, p. 83, 

 pi. xlix. 



This has many characters in common with Tisbc fiircaia, 

 and is met with in similar situations, but always sparinglv. 

 We have seen no local spec imens excepting one or two taken 

 at Koker on the fronds of Loiniiuji ia sa<chariiui (G. S. C.) D. 



