Notes. It will be here seen that the Scale of many of these drawings has not 

 been noted. To the naturalist this will probably appear an omission ; but they 

 have been disregarded simply to give more scope to every detail of the forms, 

 and have therefore been enlarged or otherwise at the will and pleasure of the artist. 



A naturalist will at once detect the want of arrangement and classification, 

 as well as the absence of artistic delineation in these interesting and beautiful 

 forms, some of which I believe to be new, or at least varieties of species already 

 known. This irregularity will, I am sure, be excused ; and it is not improbable 

 that many have been overlooked by an unskilled microscopist. 



These drawings were exhibited at the Soiree of the Royal Society, Burlington 

 House, June, 1869. 



