450 WILLIAM K. GREGORY * 



i 



* 



Subfam. Xiphostominae 



K Anostominas 



" Hemiodontinas 



" Distichodontinae 



" Citharininas 



Suborder Glanencheli Cope (Gymnonoti Gill)-- 



Fam. Gymnotidas 



Suborder Eventognathi Gill 



Fam. Cyprinidaa J 



Subfam. Catostomina? 



" Cyprininae 



" Cobiditinas 



" Homalopteritia? 



Suborder Nematognathi Gill 



Fam. Siluridae * 



Subfam. Clariinas 



" Silurinaa 



" Bagrinas 



" Doradinae 



' ' M alopterurinae 



" Callichthyinas 



" Hyophthalminae 



" Trichomycterinae- 



Fam. Loricariidae » 



Subfam. Arginae 



" Loricariinas 



Fam. Aspredinidae * 



Superorder Uncertain 



Order Apodes {Linn.) Kaup 



Suborder Archencheli Jordan 



Fam. Anguillavidas 



Suborder Enchelycephali Cope 



Fam. Anguillidae 



" Nemichthyidas 



" Synaphobranchida^ 



Suborder Colocephali Cope 



Fam. Murasnidse 



Suborder Carencheli Gill 2 



Fam. Derichthyidae 



Suborder Lyomeri Gill and Ryder 2 



Fam. Saccopharyngidse 



1 Bciulenger's classification. 



2 Incertse Sedis may deserve a higher rank coordinate with Apodes. 



