Table Showing the Relation of the Guayas Fauna to that of the 

 Rivers North and South of it. 



The letters 5" and A'^ indicate " farthest North," or " farthest South," for 

 the respective species. Only those species of the San Juan to the Patia are 

 given that are also found in Ecuador. 



In the following list those species 

 which enter the ocean and may readily 

 migrate from stream to stream by way 

 of the ocean are marked by *. 



Cetopsidae: 



1. Celopsogiton occidentalis . . . . 

 Siluridae: 



2. Hexanematichthys henni*. . . . 



3. H. labiatus* 



4. Pseudopimelodus transmontanus 



9- 

 10. 



16. 

 17- 



19. 



Microglanis variegatus 



Rhamdia cinerascens 



Pimelodella grisea 



P. modesta 



P. yuncencis 



P. elongata 



Pygiididae: 



11. Pygidium laticeps 



12. P. tcBnium 



13. P. punctatmn 



14. P. piiirce 



Loricariidae: 



15. Plecostomus spinosissimiis 



Hemiancistrus landoni , 



H. annectens , 



Ancistrus bufonius^^ 



Chaetostomiis fischeri 



20. C. ynarginatus 



21. C. aqiiinoctialis^^ 



22. Loricaria jubata 



Astroblepidae: 



23. Asiroblepus cyclopus 



24. A. grixalvii 



25. A. fissidens 



26. A. choice 



27. A. longijilis 



Characidae: 



28. Curimatus boulengeri 



C. troscheli 



C. peruanus 



Apareiodon eciiadoriensis 



A. terminalis 



Saccodon wagneri 



5. craniocephaliim 



Prochilodus humeralis 



P. stigmaliirus 



Leporinus ecuadoriensis 



Lebiasina bimaculata 



Piabucina aureoguttatus 



P. astrigata 



Hyphessobrycon ecuadoriensis. 



42. Astyanax festcB 



43. Phenacobrycon henni 



29. 

 30. 

 31- 

 32. 

 33- 

 34- 

 35- 

 36. 

 37- 

 38. 

 39- 

 40. 

 41. 



— S 



— S 



— S 



N- 



N— 



— S 



N— 

 N— 



19 These species are recorded from the Rio Pove, Santo Domingo de los 

 Colorados 560 m. I am not sure whether the Pove drains into the Esmer- 

 aldas or into the Guavas. 



