N. B.— The additional Plates which should have appeared 

 in the present Fasciculus will be given in another Num- 

 ber, shortly to be issued. Great disappointment has been 

 occasioned to the Editing Committee by the long-continued 

 delay in the execution of these Plates by the Heliotype 

 Printing Company of Boston. 



The Illustration to Prof. "Wright's paper on Demodex 

 will also be supplied hereafter, in cases Where it may not 

 be included in the present Number. 



