Introduction. xxix 



Ahumada, Chihuahua; a large irrigating ditch, June 22. 



Chihuahua, Chihuahua; Rio Chihuahua, June 19. 



Santa Rosalia, Chihuahua; Rio Noavaco, June 10. 



Jimenez, Chihuahua; Rio Conchos, June 9. 



San Andres, Chihuahua; Rio Santa Cruz, June 17, 18. 



Bustillos, Chihuahua; Lago de Castillo, the lake was dry except a few small holes, 



June 14. 

 Minaca, Chihuahua; Rio Paphigochic, June 16, 17. 

 Aguas Calientes, Aguas Calientes; Rio Verde, June 7. 



Lagos, Jalisco; tributary of the Rio Verde, and small lake near the city, June 6. 

 La Barca, Jalisco; Rio Lerma, June 5. 



Ocotlan, Jalisco; Rio Grande de Santiago and a few bayovis, June 2 and 3. 

 Celaya, Guanajuato; small stream tributary to the Rio Lerma, May 28. 

 Acambaro, Guanajuato; Rio Lerma, May 27. 

 La Palma, Michoacan; Lago de Chalco, May 30, 31. 

 Huingo, Michoacan; Lago de Cuitzeo, May 26. 

 Patzcuaro, Michoacan; Lago de Patzcuaro, May 18 to 22. 

 Zirahuen, Michoacan; Lago de Zirahuen, May 24. 

 San Juan del Rio, Queretaro; Rio San Juan, May 16. 

 Chalco, Mexico; Lago de Chalco, April 30, May 1. 

 Texcoco, Mexico; Lago de Texcoco, May 13. 

 Puente de Ixtla, Morelos; Rio Ixtla, April 24 to 26. 

 Balsas, Guerrero; Rio Balsas and Rio Cocula, April 22 and 23. 

 Venta Salada, Puebla; Rio Tehuacan, May 6, 1901. 

 Cuicatlan, Oaxaca; Rio Quiotepec, May 5, 1901. 

 Oaxaca, Oaxaca; Rio Verde, May 4, 1901. 

 Jalapa, Vera Cruz; Rio Sordo, May 9. 

 La Antigua, Vera Cruz; Rio San Francisco, May 10. 



LIST OF LOCALITIES IN MEXICO WHERE COLLECTIONS 

 OF FISHES WERE MADE BY THE AUTHOR IN 1903. 



Sauz, Chihuahua; Rio Sauz, May 29. 



Lerdo, Durango; Rio Nazas, May 21. 



Santiago Papasquiaro, Durango; Rio Nazas, May 25. 



Labor, Durango ; a small spring brook with no outlet from the sea ; a small col- 

 lection received in June from Mr. H. Douglas, conductor on Interna- 

 tional Railroad. 



Durango, Durango; Rio Mezquital, and a spring near the city, May 23. 



Monterey, Nuevo Leon; Spring in the city, May 20. 



San Juan, Nuevo Leon; Rio San Juan, May 19. 



Montemorelos, Nuevo Leon; Rio Pilon, May 18. 



Linares, Nuevo Leon; Rio Camacho, May 16. 



Linares, Nuevo Leon; Rio Pabillo, May 17. 



Garza Valdez, Tamaulipas; Rio Pilon, May 15. 



La Cruz, Tamaulipas; Rio de Purification, May 13. 



Santa Engracia, Tamaulipas; Rio de Santa Engracia, May 12. 



Victoria, Tamaulipas; Rio de San Marcos, May 11. 



Forlon, Tamaulipas; Rio Forlon, May 9. 



Valles, San Luis Potosi; Rio Valles, May 7. 



Rascon, San Luis Potosi; Tributary of the Rio Valles, May 6. 



