1897.] The Origin of the Galapagos Islands. 877 
Subfamily Dolichoderinz. 
1. Tapinoma melanocephala Fabr. Samoa, Tonga, Galapa- 
gos Islands, Singapore, Cayenne, West Indies, Madagascar. 
1. Plagiolepis gracilipes Smith. India, Singapore, Celebes, 
China, Australia, Samoa, Tonga, Ellice Islands, Chili. 
1. Technomyrmex albipes Smith. Ceylon, Sunda Islands, 
Samoa, Tonga, India, Hong Kong, Papua. ; 
1. Tridomyrmex gracilis‘Lowne. Samoa, Australia. 
2. Tridomyrmez rufoniger Lowne. Samoa, Australia. 
Subfamily Camponotinæ Forel. 
1. Camponotus nove-hollandie Mayr. Australia, Samoa, 
Tonga, Ellice Islands. 
2. Camponotus cristatus Mayr. Fiji Islands. 
3. Camponotus laminatus Mayr. Fiji Islands. 
4. Camponotus schmeltzi Mayr. Fiji Islands. 
5. Camponotus sexguttatus Fabr. Sandwich Islands, South 
America, Island of Santa Cruz, West Indies, Canary Islands. 
6. Camponotus pallens Guill. Tonga Islands. 
7. Camponotus pallidus Smith. Fiji, Tonga, Samoa Islands. 
8. Camponotus subtilis Smith. Fiji Islands. 
9. Camponotus senex Smith. Galapagos Islands, Brazil, 
Central America, Mexico. 
10. Camponotus planus Smith. Galápagos Islands. 
11. Camponotus macilentus Smith. Galápagos Islands. 
12. Camponotus peregrinus Emery. Galápagos Islands. 
Colobopsis dentata Mayr. Fiji Islands. 
Colobopsis carinata Mayr. Fiji Islands. 
Colobopsis oceanica Mayr. Fiji Islands. 
Colobopsis nigrifrons Mayr. Tonga Islands. 
Colobopsis conica Mayr. Tonga Islands. 
Colobopsis rufifrous Smith. Tonga, Fiji, Molluccan Is- 
s. , 
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5 
l. Prenolepis vividula Nyl. Tonga, Samoa, Ellice Islands, 
Australia, Madagascar, Texas. 
2. Prenolepis longicornis Latr. Samoa, Chile, Senegal, N. 
America, Batavia, Ceylon, Mexico, Cuba, Madeira. 
3. Prenolepis clandestina Mayr. Sandwich Islands, Java. 
