4 ANATOMY OF THE WOOD RAT 



A considerable proportion of the skeletons available were 

 in such condition as to be of limited value for the purposes 

 in hand, although most of them were excellent. The skele- 

 tons available consisted of the following: 



Skeletons 



Neotoma {Homodontomys) fuscipes fuscipes 9 



" " " macrotis 1 



" (Neotoma) albigula albigula 4 



" " desertorum 2 



" " floridana rubida 2 



" " intermedia intermedia 1 



" " lepida stephensi 2 



" " pennsylvanica pennsylvanica 1 



" (Teonoma) cinerea cinerea 5 



" " " occidentalis 1 



" " " orolestes 1 



Illustrations 



Any work on anatomy is well nigh useless without illus- 

 trations. In this is it especially true that an illustration 

 may be more illuminating than a dozen pages of text. In 

 such work it is almost imperative that the investigator 

 prepare his own drawings in order to show exactly what he 

 wishes. 



It has been the purpose of the writer to illustrate every 

 detail of the portions of the anatomy treated that he con- 

 sidered at all worth while, without carrying this to a useless 

 extreme. An effort has also been made to have the illustra- 

 tions self-explanatory to as large a degree as possible. 



In making the drawings, the writer used a camera lucida 

 while tracing with a pencil the salient features, after which 

 corrections were made, and the figure finished with ink. No 

 effort was made to correct the distortion by the foreshorten- 

 ing inevitable in the use of the camera lucida, and which at 

 times may have been accentuated without realizing it. 

 For this, as well as other reasons, the drawings must be con- 

 sidered semi-diagrammatic. Thus, for clarity, the curved 

 surfaces of the specimen are somewhat flattened in the 



