Bibliographical yotices. 



529 



LXX.— ^ nexo Specific Name for an Orectololid Shark. 

 By C. Tate Regan, M.A. 



(Published by permission of the Trustees of the British Museum.) 

 I HAVE just received a copy of " A Revision of the Australian 

 Orectolobidae," by J. Douglas Ogilby and A. R. McCulloch 

 (Journ. & Proc. R. Soc. N. S. Wales, xlii. 1908). In this 

 the authors describe and figure under the name Orectolohus 

 dasypogon, Bleek., a shark, from Torres Straits, which appears 

 to bedistmct from that species, the type of which, from Wairriou, 

 IS in the British Museum. I therefore propose for tliis'^new 

 form the name Orectolohus ogilhyi, in honour of the Australian 

 ichthyologist who has studied this group of sharks. 



The main differences between the two species may be shown 

 thus : — 



Orectolohus ogiUxyi. 



Gill-openings decreasing in size 

 from the tirst to the fourth; last 

 larger; last two closer together 

 than the rest. 



Fringes on each side of the head 

 iu three separate groups. 



O. dasypogon. 



Firstgill-openingslightlv smaller 

 than the rest, which are of equal 

 size and equidistant. 



Fringes on each side of the head 

 in two group.s, the more posterior 

 equivalent to the last two in O. 

 ogilbyi. 



Origin of first dorsal fin in the 

 middle of the total length. 



Distance between origins of 

 dorsals slightly more than ^ that 

 from origin of second dorsal to end 

 of tail. 



0. ogilbyi is certainly very closely allied to 0. dasypogon, 

 and the two species can scarcely be placed in different genera. 

 1l\\q gexwxa Eucrossorhinus, established by me for 0. dasy'- 

 pogon, chiefly on account of the form of the gill-openin<^s 

 becomes a synonym of Orectolohus. ^ ' 



Origin of first dorsal fin well 

 behind the middle of the total 

 length. 



Distance between origins of 

 dorsals nearly ^ that from origin of 

 second dorsal to end of tail. 



BIBLIOGRAPHICAL XOTICES. 



Guide to the Whales, Povjwhes, and Dolplim {Order Cetacea) 

 eahibited in the Department of ZooJoqy, British Museum (Natural 

 History). Illustrated by 33 Figures. London : Printed by 

 Order of the Trustees, 1909. Price M. 



The Guide-Books to the Zoological Department of the Natural 

 History Museum have been steadily growing, both in size and 

 number, tor years past, so that they mjw provide a fairly complete 



