A CONTRIBUTION TO OUR KNOWLEDGE 



OF THE 



CRUSTACEA OF THE CHANNEL ISLANDS. 



BY JOSEPH SINEL. 



By reason of our varied and favourable coastline, as well as 

 our geographical position, it is evident that the large class of 

 animals comprised under the name of Craatacea must be very 

 strongly represented on our shores. Upwards of five thou- 

 sand species are recorded as belonging to North Atlantic 

 waters, which in a zoological sense cover the area we occupy. 

 Considering the climatic conditions as well as the situation of 

 these islands, perhaps it may not be rash to assume that one- 

 half of this large number, say 2,500 species, occur in our seas ; 

 and yet the lists which have been published up to the present 

 are very meagre. 



The first contribution on the subject which appears is the 

 list given in Ansted's Channel Lshmch (186.")), where one 

 hundred species are enumerated, consisting of 57 Stalk-eyed 

 Crustacea, 30 Isopoda and Amphipo.la, and 13 Entomostraca. 

 A more extended list is given in Dr. Rene Koehler's Faiuie 

 Marine des lies AiKjlo-Normandes^ published in 1889 in the 

 Transactions of the Paris Academy of Science. 



In the division Amjjhipoda, Messrs. Walker and Hornell 

 have published what is no doubt the most complete list up to 

 this date ; yet the total of these })apers does not do much 

 more than touch the fringe of the subject ; and as to the 

 division Entomostroca^ that large field still remains almost 

 unexplored.* 



In these sections of minute Crustacea I am not m 

 a position even to attempt the making out of a list, 

 but as regards the Podophtkalvia^ or Stalk-eyed Crustacea, 

 I think I am able to enumerate pretty nearly all the species 

 that occur in the Channel Islands, Avith the exception of the 



* An article entitled " Report on the Plankton Copepoda of the Channel 

 Islands," by Mr. Isaac C. Thompson, F.L.S., was published in the Journal of 

 Marine Zoology for December, 1897. This paper, dealing with the Copepoda 

 only, as its title states, gives a list of 31 species taken in St. Aubin's Bay, and 

 Greve d'Azette, Jersey. 



