BY F. JEFFREY BELL, M.A., SEC. R.M.S. 497 



After the list of the species of each class, I have added a few 

 notes on those that have seemed to me to be of special interest or 

 importance. 



Here one genei'al remark need alone be made ; the collections 

 before me show that within a short distance of the meeting place 

 of the Linnean Society, thei-e is a bay teeming with species and 

 individuals. The exact knowledge of the fauna of a given region 

 — in other words a correct and full enumeration of the species — is 

 a matter of considerable importance, but one cannot insist too 

 often, too unweariedly, and even too fanatically on the gi'eat, 

 though not always clearly perceived, truth that we are not a little 

 like those who beat the air when we add species to species and 

 genus to genus, and yet know of these nothing more than is suffi- 

 cient to justify our framing our diagnoses. The knowledge of the 

 variations during growth, of the variations due to slight alterations 

 in the surroundings of the proportional frequency of individuals, 

 and of the relation of species to one another will afford a firmer 

 base for systematic work than synonymic catalogues or nominal 

 check-lists. 



The student who lives at Port Jackson might well take this 

 truth to heart, for he lives in a region in which the number of 

 individuals of certain species is sufficient for all the purposes just 

 indicated. 



DIVISION. PELMATOZOA. 



Class. Ceinioidea. 



1. Antedon milberti. 



Port Denison, Port Molle. 



2. Antedon mauonema. 



Port Stephens. 



3. Antedon spicata. (P. H. Carpenter. Notes Leyden Museum, 

 III., p. 190. 



Ugi. 



4. Antedon sp. Allied to but not the same as A. spicata. 



Ugi. 



