543] MELIOLA IN PORTO RICO — STEVENS 75 



EXPLANATION OF PLATES 



All plates are from photo-micrographs made by Mr. A. G. Eldredge. 

 They were reduced 28% in reproduction. The abbreviations l.p. 

 and h.p. indicate low power and high power with a magnification of ap- 

 proximately 75 and 355 diameters respectively. Scales showing the 

 magnification are given in plate V ; the smallest divisions are 10/a wide. 



