1881.] PROF. F. .1. BELL ON THE ECHINOMETRID.E. 



Stomopneustes VARIOLARIS. 



425 



Strongylocentrotus. 



In adopting the generic name of Strongylocentrotus, proposed in 

 the year 1835 by Brandt, Prof. Alex. Agassiz has done no more than 

 justice to that eminent naturahst ; but this act of justice is accom- 

 panied by the considerable reward that it has enabled him to group 

 under one name, for all practical purposes new ', the varied forms 

 which had been distributed among different generic sections under 

 the names, chiefly, of Euryechinus, Heliocidaris, Toxocidaris, and 

 Loxechinus. 



It is the group which at present contains a larger number of 

 species than any other Echinid genus : fourteen species are recog- 

 nized in the * Revision ; ' to this number I have myself been oI)liged 

 to add one for the reception of certain specimens from the Straits of 

 Magellan ^ ; so far as I know, no other zoologist has obtained any 

 representative of a new species. 



Strongylocentrotus albus. 



* The recognition of the name {Sirongylocentrits) by Dr. Gray (1855) was, 

 unfortunately, ignored by subsequent writers, and seems even to have escaped 

 Mr. Agassiz. Cjf. op. cif. p. 161. 



= P. Z. S. 1881, p. 88. 



Proc. Zool. Soc— 1881, No. XXVIII. 



28 



