Goree Island, Senegambia. 205 
logical collector, and also on account of the number of new 
and remarkable forms it contains. 
All the species collected, except Peneus brasiliensis, were 
dredged in Goree Bay, at a depth of about 9-15 fathoms 
(18-28 metres), on a bottom partly shelly and partly muddy, 
and were brought to the British Museum by Baron Hermann- 
Maltzam. Dr. Giinther, Keeper of the Zoological Depart- 
ment, recognizing the scientific value of this collection, 
intrusted it to me for description; and a complete set of the 
species obtained has been retained for the British Museum. 
Although (so far as I am aware) the only species heretofore 
described from Goree is the Pilumnus africanus of M. Alph. 
Milne-Edwards, a considerable number of species have been 
recorded from other localities on the West-African coast, and 
from the Cape-Verd and Canary Islands and Madeira, by 
Leach, Webb and Berthelot, Dana, Stimpson, Milne-Edwards, 
and other naturalists, reference to whose works will be found 
in the following pages; and a very close affinity will be 
shown to exist between the crustacean fauna of West Africa 
and that of the Mediterranean region, through the island 
groups above mentioned. In the determination of this affinity 
I have been much aided by the collections made at Madeira 
by the Rev. R. B. Watson and at the Canaries by the late 
R. MacAndrew, Esq., and by them presented to the British 
Museum. 
A very distinct but less marked relationship is also trace- 
able between the West-African Crustacea and those inhabiting 
the western shores of the Atlantic (particularly the West 
Indies) ; and some few of the species collected have even an 
Oriental distribution. One only has as yet been recorded 
from the Cape of Good Hope (Pilumnus verrucosipes, Stimp- 
son), 
At the end of the paper will be given a systematic list of 
the genera and species, with the geographical distribution as 
far as known at present. 
I have added descriptions in footnotes of a few species from 
neighbouring localities in the British- Museum collection. 
Baron Hermann-Maltzam is himself engaged in working 
out the interesting series of Mollusca collected ; but the few 
shells inhabited by Paguridee and referred to below have been 
determined for me by my colleague Mr. EH. A. Smith, 
