ILLUSTRATIONS 



Plate I 



(Drawings by Castro) 



Fig. 1. Caridina sp. A female with eggs from Sisiman, near Mariveles, 

 Bataan Province, Luzon. X 3. 



2. Atya molluccensis de Haan. A female without eggs from Sisiman, 



near Mariveles, Bataan Province, Luzon. December. X 1.5. 

 The spines on the third, fourth, and fifth legs vary in number. 



3. Atya molluccensis de Haan. A female from Sisiman, Bataan 



Province, Luzon. Drawn from a living specimen. X 2. a, hairs 

 on chelipeds, enlarged. This figure shows the methods of feeding 

 of Atya when there is a stream of water. 



Plate II. Myctiris longicarpus Latreille 



(Photographs by Cowles) 



Fig. 1. A band of crabs on a tide flat. 



2. A portion of a tide flat, showing piles of sand above the burrows of 



Myctiris. 



3. A vertical median section of a burrow. 



Plate III. Myctiris longicarpus Latreille 



( Photographs by Cowles ) 



Fig. 1. A crab partly covered with sand. 



2. The mound of sand above a hole. 



3. The mound of sand above a hole, the entrance completely closed. 



4. Dorsal view of Myctiris. 



5. Front view of Myctiris. 



text figures ■ 



(Drawings by Cowles) 



Fig. 1. Atya molluccensis de Haan. Left first leg, outer aspect. X 3.5. 

 2. Atya molluccensis de Haan. Left first leg, outer aspect, showing 

 chela turned backward for application to the mouth. X 3.5. 



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