242 Appendices to Sixth Annual Report 



Artotrogid^e, Brady. 



Artotrogus Boeckii, Brady. 



Artotrogus Boeckii, Brady, Mon. Brit. Cop., vol. iii. p. 60, pi. xci. 

 figs. 1-9, 1880. A number of specimens of this species were 

 taken in Granton Harbour ; they were obtained by washing 

 a specimen of Chalinula oculata found attached to the pier at 

 extreme low water ; they had probably been seeking shelter 

 about the Sponge (S.F.B.). 

 Artotrogus magniceps, Brady. 



Artotrogus mag?iiceps, Brady, Mon. Brit. Cop., iii. 



pi. xciii. figs. 1-9, 1880. A few specimens, in material 

 dredged west of Queensferry (S.F.B.). 

 Artotrogus papillat us, n. sp. 



This species was dredged in deep water a little west of Inch- 

 keith, and is described on p. 

 Acontiopliorus scutatus, Brady and Robertson. 



Aeontiophorus scutatus, Brady, Mon. Brit. Cop., vol. iii. p. 69, 

 pi. xc. figs. 1-10, 1880. Occasionally among dredged 

 material from the vicinity of Inchkeith (S.F.B.). 



Remarks. — The preceding are all the species of Copepoda that have 

 been identified, but there are several others, which, from their general 

 distribution around our shores, may be expected to be yet found in the 

 Forth. The following additional species have been observed in Cromarty 

 Firth, near Invergordon — Laophonte curticanda, Boech ; Porcellidium 

 fimbriatum, Claus ; Cyclopicera nigripes, B. and R., and Cyclopicera 

 Gracilieanda, Brady — which do not appear to have been previously 

 recorded from that district. 



The Calanidae, which include most of the free swimming or pelagic 

 species, are the most important of the Copepoda in relation to the food 

 supply of fishes and especially of young fishes. The majority of the 

 others keep near the bottom, and seek shelter and possibly food among 

 the forests of Algae and Zoophytes. It is probable that Shrimps, Prawns, 

 Schizopods, and other small Crustaceans feed on these, and they thus 

 become, though indirectly, of nearly equal importance with the others. 

 The greater number of the Calanidse, and some of the Harpacticidse, have 

 already been recognised among the contents of the stomachs of herring 

 and of the young of several species of Gadidse ; but a thorough and 

 practical acquaintance with the group in their living state is required to 

 enable one to identify them with anything like certainty in the stomach 

 of fishes. 



OSTRACODA. 



Cytherid^e. 



Cy there lutea, Miiller. 



Cythere lutea, Brady, Trans. Lin. Soc, vol. xxvi. p. 395, pis. 

 xxviii., xxxix., 1870. Gulland Bay, vicinity of Inchkeith ; 

 frequent (S.F.B.). 

 Cythere pellucida, Baird. 



Cythere pellucida, Brady, op. cit., p. 397, pis. xxviii., xxxviii. 

 Largo Bay, Gulland Bay ; not infrequent (S.F.B.). 

 Cythere tenera, Brady. 



Cythere tenera, Brady, op. cit., p. 399, pi. xxviii. Gulland Bay, 

 deep water, west of May Island ; not very common (S.F.B.). 



