NO. 3556 PORTUNID CRABS—STEPHENSON AND REES 3 
Geographical distributions adhere closely to the expected pattern, 
with the better known species extending from East Africa and the Red 
Sea to India, Japan, Australia, and the mid-Pacific islands. Only one 
of the present species (Thalamita picta) and one species of Ovalipes 
(see later work) are known to cross the mid-Pacific boundary. 
Listed specimens within the 16 main locality groupings are recorded 
in chronological order. The locality groupings are: East Africa, in- 
cluding Saudi Arabia and the Red Sea; Malay Peninsula, including 
Rangoon and Sumatra; China, including Hong Kong and Formosa; 
Philippines, including the Sulu Sea and North Borneo; Celebes; 
Australia; Melanesia, including New Guinea, Fiji, and the Solomon 
Islands; Palau Islands, including the Carolines; the Marianas, includ- 
ing Yap and Guam; Japan; the Marshalls; the Gilbert Islands; 
Samoa; Fanning Island; Hawaii; and the Tuamotu and Society 
Islands. 
Throughout, two abbreviations are used: ‘‘Alb.”’ for collections of 
the U.S. Fish Commission Steamer Albatross either from the Philip- 
pines, Japan, or Samoa, and ‘‘GVF”’ for ‘George Vanderbilt Founda- 
tion.”” And, throughout, dimensions are those of total breadths, 
including the last anterolateral teeth. In cases of damage, the 
approximate estimated breadth of the undamaged specimen is given. 
Specimens considered too small or too damaged for identification 
have been excluded from this account. 
It is obvious that this paper could never have been written but for 
the kindness of Dr. Fenner A. Chace, Jr., who asked us, in the name 
of the Smithsonian Institution, to report upon the collections. We 
are also deeply grateful to the following museums and their directors 
for allowing us to borrow specimens for comparative study: Australian 
Museum, Sydney (Dr. J. W. Evans), Western Australian Museum 
(Dr. W. D. L. Ride), Queensland Museum (the late Mr. G. Mack), 
Central Marine Fisheries Research Institute, India (Dr. S. Jones), 
Muséum National d’Histoire Naturelle, Paris, Laboratoire de Zoologie 
(Arthropodes) (Dr. J. Forest). The following carcinologists have 
helped materially either in loans or in examination of specimens or by 
their advice: Dr. John C. Yaldwyn, Dr. Ray W. George, Mme. 
Daniéle Guinot, Dr. Lipke B. Holthius, Dr. John S. Garth, and 
Dr. Raymond B. Manning. 
Thanks are due to Mr. E. Hollywood, University of Queensland 
photographer, for photographic illustrations, the Research Grants 
Committee of the University of Queensland, and the Smithsonian 
Institution for financial assistance. 
