4ii 



I'ATAGONIAN EXrKDITIONS: ZOOLOGY. 



( )rder PLECTOSPONDYLI. 



Familv CATOSTOMID.^. 



Holarctic fishes entering the northern 

 border of the tropics. 



Caki'IODKS Rafmesqiic. 

 Type: Catostoinus cyprinus Le Sueur. 

 Range : Guatemala through the Missis- 

 sippi valley and Great Lakes. 



1. Civfioth-s iiuridioiiiilis (Giinther), 



Meek, 26. 

 Habitat: Vera Cruz to the Usumacinta 

 in Guatemala. 



2. Civpiodcs tuniidus Baird & Girard, 



Meek, 27. 

 Habitat: Rio Fanuco to the Rio Grande. 



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



Habitat: Rio Panuco Basin. 



Pantosteus Cope. 

 Type: Miiioinus platyrliynchns Cope. 



Range: From tropical America north- 

 ward through the Rocky Mountains. 

 Pantosteus plebeius (Baird & Girard), 

 Meek, 30. 

 CiUostoiiitis guz)iuiiticnsis Girard; Cato- 



stoinns nebulifenis Garman. 

 Habitat : From the northern margin of 

 trojjical America at Durango north- 

 ward. 



MoxosTOMA Rafinesque. 

 Type: Catostovius aitisurns Rafinesque. 

 Range : Rio Lerma through the eastern 

 United States. 

 Moxostoma austrinum Bean, Meek, 35. 

 Habitat : Rio Lerma Basin and head- 

 waters of the Rio Mezquital. 



Family CYPRINID.ii. 



XVSTROSUS Jordan & Snyder. 

 Tyijc: Xystrosiis propochc Jordan & 



Snyder. 

 Range that of the single species. 

 I. Xystrosus popoche Jordan & Snyder, 



Meek, 43. 

 Habitat: Rio Lerma Basin. 



Algansea Girard. 

 Type: Leuciscus iincdla Cuvier & Va- 

 lenciennes. 

 Range: Lerma Basin. 



1. Algansea tincella (Cuvier & Valencien- 



nes), Meek, 44. 



Ceratichthys salloci Giinther. 



Habitat: Rio Lerma; valley of Mexico; 



Rio Panuco Basin. 



2. Algansea dugesi Bean Meek, 45. 



Habitat: Lerma Basin. 



3. Algansea rubescens Meek, ..Meek, 46. 



Habitat: Lerma Basin. 



4. Algansea lacustris Steindachner, 



Meek, 47. 

 Algansea tarascoruvi Steindachner. 

 Habitat : Lerma Basin. 



5. Algansea affinis Regan, 



Regan, 1907-8, 151. 

 Habitat: Rio Lerma. 



6. Algansea stigmattira Regan, 



Regan, 1907-8, 152. 

 Habitat: Me.xicu. 



Hybognathus Agassiz. 

 Type: Hybognathus ntichalis Agassiz. 

 Dionda Girard; Agoma Girard. 



Range: Border of tropical America 

 northeastward through the Missis- 

 sippi valley to the Delaware. 



