:1897.] The Origin of the Galapagos Islands. 871 
15. Caridina wycki (Hickson), 1888. 
Distribution: From East Africa to Eastern Astralis: — East 
Africa; Dar-es-Salaam; Ceylon; Celebes; Saleyer; Flores ; 
Timor; Queensland: Burnett. 
‘16. Cidin nilotica (Roux), 1833. 
‘Distribution : ‘Northern Africa ; Nile ; Algiers River Macta 
near Oran: 
17. Caridina graniiti Stimpson, 1860. 
Distribution : Loo Choo Islands. 
18. Caridina gracilirostris de Man, 1892. 
Distribution : Sumatra ; Celebes; Saleyer ; Flores. 
19. Caridina singhalensis ‘Ortmann, 1894. : 
Distribution : Ceylon: 
20. Caridina brevirostris tiie vache, 1860. - 
Distribution : Loo Choo. 
21. Caridina pasadene Kingsley, 1896.* 
Distribution: Southern California. — 
Atyoida Randall, 1839. 
1. Atyoida potimirim F. Müller, 1881. 
Distribution: Brazil: Itajahy. 
2. Atyoida bisulcata Randall, 1839. : 
Distribution: Hawaiian Islands; Oahn; Tahiti. 
Atya Leach, 1817. 
1 Atya moluccensis de Haan, 1849. 
Distribution: Fresh-water of the Indian Archipelago; Su- 
matra; Java; Batjan; Bali; Celebes; Saleyer; Ceram ; 
Timor ; Flores; Amboina ; Philippine Islands: Samar. 
2. Atya, spinipes Newport, 1847. 
Distribution: This species represents ‘A. molluccensis in the 
fresh-water of the Pacific Islands ; silica Islands; Caroline, 
Fiji, Samoa Islands. 
3. Atya brevirostris de Man, 1892. 
Distribution : Flores ; Timor; Amboina. 
24, Atya margaritacea A. Milne-Edwards, 1864. . 
- * Added by Prof. Kingsley. 
