1908.] 



CAPE VERDE ISLANDS SPONGES. 



759 



has no oxeote spicules. In the case of these two genera the 

 classification is to be regarded, I« think, as the expression of a 

 suspension of judgment. There can be little doubt that both 

 Leucosolenia and Leucandra will eventually have to be split up 

 into several distinct genera ; but until this can be done with some 

 reasonable likelihood of finality, it would seem wisest not to 

 attempt the task. 



I take this opportunity of expressing my gratitude to Professor 

 A. Dendy, F.R.S., who placed the collection at my disposal for 

 examination, and who has throughout the research given me 

 invaluable assistance and advice. I have also to thank my friend 

 Mr. F. J. Bridgman, Marshall Scholar in the Royal College of 

 Science, who has very kindly sketched the external form of several 

 of the Heteroccela (PI. XL. figs. 4, 5, 7, and 9). And finally I must 

 acknowledge my indebtedness to the authorities of the British 

 Museum (Natural History), who gave me access to the National 

 Collection of Calcarea and have aflforded me special facilities for 

 consulting the literature on the subject, much of which is not 

 easily obtainable elsewhere. 



Leucosolenia panis (Haeckel). (Plate XL. fig. 1 k text-fig. 155.) 



Synonymy : — 



Ascandra panis Haeckel [14]. 



The collection contains three specimens of this beautiful little 

 sponge, all dredged from a depth of 20 fathoms near North Point, 



Text-fig. 155. 



Spicules from Leucosolenia panis. 

 a — Triradiates. h = Quadriracliates. c = Oxeotes. 



All X 120. 



Boa Vista Island. The external form and general characters of 

 these agree with the description of the species given by Haeckel, 



