Occasional Papers of the Museum of Zoology 6i 



PLATES 



The numbers of the figures are the same as used in the 

 dimension tables in the text. The scale of each plate is shown 

 on it, by means of a hair-line, which represents, in plates 

 I-XIII, an actual length of one centimeter. In the other plates, 

 the scale is indicated above each hair-line. All drawings were 

 made with the aid of a camera lucida. 



