From t/ut Annai-S and Magazi.ve op Natuuai. IIistouy, 

 8er. (3. Vol. xiii., Mai/ 1H<»4. 



On some rare and interestincj Crustacea from the Dogger Bank 

 collected hy Ernest W. L. Holt, Esq. By TiiOMAS ScOTT, 

 F.L.S., Naturalist to the Fishery Boardfor ScjtlauJ. 



The Crustacea which form the subject of this memoir were 

 presented to me several months ag-o by my friend Mr. Ernest 

 W. L. Holt. They were collected by him at the south-west 

 end of the Dogger Bank in April 1892, while he was engaged 

 on board the^ S.S. ' Resolute ' carrying out a series of 

 fishery investigations for the Marine Biological Association. 

 The collection in which the Crustacea occurred was made 

 by fixing a tow-net to the end of the beam of the trawl, ^as is 

 done on board the Scottish Fishery Steamer * Garland,' and 

 which is a very effective method for capturing those free- 

 swimming marine organisms whose habitat is usually near 

 the bottom. The trawl on this occasion was down for about 

 eight hours in water the depth of which varied from 20 to 26 

 fathoms. The locality where the collection was made may 

 be fiven approximately as 70 to 80 miles east by north of 

 Spm-n Head at the mouth of the Humber. When the trawl 

 was hauled up the tow-net fixed to the beani was found to 

 contain a large quantity of living matter consisting chiefly of 

 small Crustacea. In this single tow-net gathering the 

 number of species of Crustacea that have been identified are 

 as follows, viz. : — Three species of Decapoda, four species of 

 Schizopoda, four species of Cumacea, twenty-two species of 

 Amphipoda, and five species of Copepoda ; a Pteropod, Clione 

 limacina (Phipps) {Clione boreads, Pallas), was also obtained 

 in the same collection. 



Some of the Crustacea obtained in this gathering have not, 

 so far as 1 know, been previously recorded from the English 

 coasts ; indeed the collection as a whole is a very interesting 

 one and shows how much may be done towards increasing 

 our'knowledge of the distribution of the British marine fauna 

 by the adoption of proper methods of investigation, and also 

 thcrel>y tending to throw additional light on obscure fishery 

 questions. Some remarks of the Kev. A. M. Norman on tiie 

 iinportance of a knowledge of the Crustacea in connexion 

 with fishery investigations may be appropriately quoted here. 

 Dr. Norman says: — "No real progress can be made with 

 respect to the food of fishes until investigators are familar 

 with those Crustacea which constitute so large a portion of 

 that food"*. 



* ' Fourth AiiniKil Report of the Fishery Board for Scothmtl,' p. 155 



