10 Mr. Matthews' Jir/j/,/ fa CrU lclxiii.<. 



pages of the Review must have conveyed the infection. 1 can 

 never forget the kind manner in which J)r. J)ohrn assisted me 

 in my work, and liowever we may difter in our opinion of otlier 

 uien, 1 ti'ust our regard fin' each otlier may remain unchanged. 



To Reviewers, who in a work which has carried the oral 

 anatomy of Coleoptera to heights never before attained, and has 

 revealed functions of certain organs previously unthought of, can 

 find nothing more worthy of notice than errors in the letter-press 

 and su})[)Ose(l defects in the i)lates, 1 need not reply ; their own 

 remarks prove the spirit l)y which they were insjiired, and 

 su])])ly an answer to themselves. 



As 1 do not intend again to revert to this sul)ject, 1 will add 

 a few words on the anatomy exhibited in the jiages and plates 

 of the " Trlr}i(>i>terii(ii(i Illiidrata." hi the Apjjendix I have 

 given a detailed list of the vast number of ))rej)aratioiis which I 

 made, in order that by com])aring them with eai^h other 1 might 

 olitain a correct idea of the true outline of eacli separate organ. 

 These ])re])aratioiis have been minutely examined and compared 

 with my figures by Drs. I>e Conte, Horn, and Sharp, and by 

 Messrs. Crotch, Wollaston, and Janson, who all concurred in 

 affirming the accuracy of my delineations. If anyone should 

 still feel sceptical on that point, my ])rt}])arations are open to his 

 ins])ectioii, and can be selected by the numbers affixed to them 

 in the list. They are preserved in Canada Balsam, which u]> to 

 the present moment has retained its pristine transparency. 



