4i8 



PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Order PLECTOSPONDYLI. 



Family CATOSTOMIDiE. 



Holarctic fishes entering the northern 

 border of the tropics. 



Carpiodes Rafinesque. 



Type : Catostomus cyprinus Le Sueur. 

 Range: Guatemala through the Missis- 

 sippi valley and Great Lakes, 

 i. Carpiodes meridionalis (Giinther), 



Meek, 26. 

 Habitat: Vera Cruz to the Usumacinta 

 in Guatemala. 

 Carpiodes tumidus Baird & Girard, 



Meek, 27. 

 Habitat : Rio Panuco to the Rio Grande. 

 Carpiodes labiosus Meek, .... Meek, 29. 

 Habitat: Rio Panuco Basin. 



Pantosteus Cope. 

 Type: Minomus platyrhynchus Cope. 



2. 



3- 



Range : From tropical America north- 

 ward through the Rocky Mountains. 

 1. Pantosteus plebeius (Baird & Girard), 



Meek, 30. 

 Catostomus guzmaniensis Girard; Cato- 

 stomus nebuliferus Garman. 

 Habitat: From the northern margin of 

 tropical America at Durango north- 

 ward. 



Moxostoma Rafinesque. 



Type : Catostomus anisurus Rafinesque. 

 Range: Rio Lerma through the eastern 

 United States. 

 1. Moxostoma austrinum Bean, Meek, 35. 

 Habitat : Rio Lerma Basin and head- 

 waters of the Rio Mezquital. 



Family CYPRINID^. 



Xystrosus Jordan & Snyder. 

 Type: Xystrosus propoche Jordan & 



Meek, 46. 



Snyder. 

 Range that of the single species. 

 1. Xystrosus popoche Jordan & Snyder, 



Meek, 43. 

 Habitat: Rio Lerma Basin. 



Algansea Girard. 



Type: Leuciscus tincella Cuvier & Va- 

 lenciennes. 

 Range : Lerma Basin. 



1. Algansea tincella (Cuvier & Valencien- 



nes), Meek, 44. 



Ceratichthys sallwi Giinther. 



Habitat: Rio Lerma; valley of Mexico; 



Rio Panuco Basin. 



2. Algansea dugesi Bean, Meek, 45. 



Habitat: Lerma Basin. 



3. Algansea rubescens Meek, 

 Habitat : Lerma Basin. 



4. Algansea lacustris Steindachner, 



Meek, 47. 

 Algansea tarascorum Steindachner. 

 Habitat : Lerma Basin. 



5. Algansea affinis Regan, 



Regan, 1907-8, 151. 

 Habitat: Rio Lerma. 



6. Algansea stigmatura Regan, 



Regan, 1907-8, 152. 

 Habitat: Mexico. 



Hybognathus Agassiz. 



Type: Hybognathus nuchalis Agassiz. 

 Dionda Girard; Agoma Girard. 



Range : Border of tropical America 

 northeastward through the Missis- 

 sippi valley to- the Delaware. 



