TREFACE. V 



Economical and Medicinal Botany, these collections 

 embraced only the Zoological productions of the region- 

 The following is an approximative enumeration of the 

 total number of species of the various classes which I 

 obtained : — 



Mammals 52 



Birds 360 



Reptiles 140 



Fishes 120 



Insects 14,000 



Mollusks 35 



Zoophytes ...... 5 



14,712 



The part of the Amazons region where I resided 

 longest being unexplored country to the Naturalist, no 

 less than 8000 of the species here enumerated were neiv 

 to science, and these are now occupying the busy pens 

 of a number of learned men in different parts of Europe 

 to describe them. The few new mammals have been 

 named by Dr. Gray ; the birds by Dr. Sclater ; the 

 zoophytes by Dr. Bowerbank ; and the more numerous 

 novelties in reptiles and fishes are now in course of 

 publication by Dr. Giinther. 



A word will perhaps be here in place with reference 

 to what has become of these large collections. It will 

 be an occasion for regret to many Naturalists to learn 

 that a complete set of the species has nowhere been 

 preserved, seeing that this would have formed a fair 



