418 Mr. W. K. Fisher on new 
Closely allied to R. mascareniensis, D. & B.; distinguished 
by the stouter and shorter hind limbs. 
By an unfortunate oversight, the frog recently described 
by me in these ‘ Annals’ (vol. xix. p. 407) as J. leonensis is 
stated to be from Sierra Leone; it was obtained by 
Dr. Spurrell at Bibianaha, Gold Coast. 
LI.—New Genera and Species of Brisingide *. 
By Wa ter K. Fisuer, Stanford University, California. 
THE new genera of starfishes of the family Brisingide which 
are described in this paper are partly derived from an analysis 
of Brisinga and Freyella of authors and partly from new 
species dredged by the U.S. Fisheries Steamer ‘ Albatross’ 
in the Kast Indies and in the North Pacific. Craterobrisinga 
and Stegnobrisinga have already been proposed as subgenera, 
but a further study of the material has convinced me that 
they are good generic groups. 
The complete diagnosis of any genus in the following 
synopsis 1s obtained by starting with the a which heads the 
particular section in which the genus is found and reading 
each pertinent section until the genus is reached. For 
example, the account of Brisinga is contained in paragraphs 
a’, b?, c?, d‘, e', f',g!; that of Gymnobrisinga in paragraphs 
a’, b'; that of Astrocles in a®, b?, c?, d?, e?; and so on. 
It is hoped that this preliminary account will be of use to 
my colleagues. Any corrections, or information regardiug 
the generic position of known species of “ Brisinga” and 
** Freyella,” will be gratefully received. 
Synopsis of the known Genera of Brisingide. 
a‘, Abactinal surface of disk and genital region 
of ray provided with numerous conspicuous 
papule ; two gonads to each ray ; mouth- 
plates broad and fan-shaped toward actino- 
stome, nearly closing the entrance to the 
aimbulacral furrow ; genital region of ray 
with transverse skeletal arches, between 
which the integument is strengthened by 
immersed plates and pierced by papular 
es 
* Published with permission of the Commissioner of Fisheries. 
