126 CLASS III. 



genera, to which may be added Staurophora BRANDT, form a family 

 in the system of ESCHSCHOLTZ, to which he has given the name 

 JBerenicidce. This family appears to me to be doubtful, as it does to 

 BRANDT and others ; we must leave the decision to time, I prefer 

 to wait the result of new observations, rather than to attribute to 

 Acalephs nutrition by superficial absorption. 



For the rest, several genera of Acalephs are founded on. figures of 

 authors alone and these sometimes imperfect and faulty. Hence 

 no part of Zoology is more uncertain than this. 



Accordingly there are many genera which I have not recorded, 

 and possibly more might have been omitted. For here excess of 

 timidity is better than dearth of prudence. 



