﻿NO. 7 



SMITHSONIAN EXPLORATIONS, I926 



93 



When last heard from. Dr. Schmitt was on his way to Valparaiso, 

 Chile, where he expected to arrive on the i8th of November. From 

 there he will proceed to Buenos Aires and then to his destination, 

 Punta Arenas, Chile. Several cases of specimens have already arrived 

 at the Museum. 



INVESTIGATION OF THE AAIPHIPODA OE THE TORTUGAS 



Mr. Clarence R. Shoemaker, assistant curator of marine inverte- 

 brates, U. S. National Museum, spent the period from ]\.\\y 13 to 



' r t 



Fig. 100. — Fort Jefferson, Garden Key. Many amphipods and isopods were 

 obtained from the rich growth of algae, hydroids and ascidians upon the 

 wall of the old moat. ( Photograph by Shoemaker. ) 



August 20. 1926, at the Carnegie ^larine Laboratory, Dry Tortugas, 

 investigating the Amphipoda of the keys. While studying the collec- 

 tions sent to the Museum by former investigators at the Laboratory, 

 so many new and interesting forms were observed that it was thought 

 advisable to spend some time at the Laboratory making as thorough 

 a survey as possible of the ainphipod fauna. 



The waters surrounding most of the principal keys, and also the 

 water of the moat at Fort Jefferson, were exhaustively examined. 

 Pelagic species were scarce, but algae and old coral-rocks yielded 

 many forins and almost countless numbers of individuals. Many 



