382 



PA FACOXIAN i:\I'KI)Il'I()\S : /<)(>I.()<.\, 



Habitat: La Plata and northward, en- 

 tering rivers. 



.\rius Ciivier & Valenciennes. 

 Type: Pimelodus ariiis Buchanan. 

 Range: Tropical seas, entering rivers. 



1. Arius agassisi (Eigenmann & Eigen- 



mann), E. & E., 86. 



Habitat: Rio Grande do Sul. 



2. Arius tnultiradialus Giinthcr, ]•'. & \i., 92. 



Habitat: Rio.< Bayano and Cianati, 

 Panama. 



Hex.\nematichthys Bleeker, 

 Type: Bagnis suiidaicus Ciivier & Val- 

 enciennes. 

 Range: Tropical seas, a few of the sjie- 

 cies entering rivers. 



1. / /t-X(i lie 111(1 tic/it/iys assiiiiilix (Giinther), 



E. &. E., 81. 

 Habitat: Atlantic coast of Central 

 .\nierica; Lake Vzabcl, Guatemala; 

 Rio Magdalcna. 



2. Hcxdiiematiclitliys graiidocnlis (Stein- 



dachner) E. & E., 85. 



Habitat: Rio Doce. 



.SciADEiciiTiiYS Bleeker. 

 Tnjjc: Bagnis citip/iysctus Miiller & 



Troschel. 

 Range : Tropical seas, a few of the 

 species entering rivers. 

 A I. Sciadciclitliys albicans (Cuvier & Val- 

 enciennes) , E. & E., 59. 



Habitat: .\niazon and northward. 



.Suhfamilv Ict.aiairtn.'I' 



ICTALURUS Rafinesquc.' 



Range: Isthmus of Tehuantepcc north- 

 east throughout the Atlantic slope. 

 fctaliinis luciidifliialis (Giinthcr), 



Meek, 1 1. 

 Habitat: Atlantic slope of the Isthmus 

 of Tehuantepec. 



AmeiurUS Rafinesque. 



Type: Pivielodus cupreus Rafinesque. 

 Range: Lerma Basin and valley of 



Mexico northeast throughout the .Vt- 



lantic slope of .\merica. 



(Haustor Jordan & Evcrmann.) 

 (Type: Gadiis lacustris W'albaum.) 



1. Aiiuiiinis a:is/m/is Meek Meek, I .V 



Habitat; Rio Panuco to Rio Blanco. 



2. Ameiurus dugesi Bean Meek, 15. 



A iiiiiinis catus Pellegrin. 



Habitat : Lerma Basin. 

 V Ameiurus mexicanus Meek, .Meek, 15. 



Habitat: Rio Panuco Basin. 

 4. Ameiurus pricci (Rutter) Meek, 16. 



Habitat: Me.squital Basin north in 

 streams of the .Sierra Madre. 



ISTI..\KI 



)rdan & Snyder. 



T\pe: Istlariiis balsauus Jordan & 



Snyder. 

 Range that of its single .species. 

 Istlarius balsanus Jordan & Snyder, 



Meek, 17. 

 ll.-.l.itat; Halsas Basin, Mexico. 



Subfamily Callophysin.t: 



Callophysus Miiller & Troschel. 

 Type: Callophysus macro pterus Miiller 



& Troschel ; Pimelotropis Gill ; Pseh 

 docallopJiysus Bleeker. 



' Ictalurus /urcatus and puiutalus of the Mississippi 

 valley reach the Rio Panuco. 



Range that of the single species. 

 A I. Callophysus macro pterus (Lichten- 



