484 



I'ATAGONIAN EXPEDITIONS: ZOOLO(iY. 



Order PLECTOGNATHl. 

 Family TETRAODONTIDyE. 



Coi.OMKSUS Gill. 



/urtrac/iofs Holland. 



Type : Tctrodon /^sittaciis IMucli & 

 Schneider. 



Range : Marine and fresh waters of 

 tropical America. 

 I. Colomcsus psittacus (Blocli & Schnei- 

 der), J. & E., 1740. 



Clierlichtliys asellus Miiller & Troschel. 



Habitat: West Indies; Guiana to 

 Maranon and Para. 



L.^GOCEl'ii.M.US Swainson. 

 I'hysogastcr and Gastrophysiis iMiiller; 

 Promecoceplialus Bibron ; Tctrodon 

 Gill. 

 Type : Tetrodon peiinanti Yarrell - Tc- 

 trodon lagocephalus Linnaeus. 

 Habitat: Chiefly tropical seas. 

 , Lagocephalus kcvigatus (Linnaeus). 



Tetrodon curvus and matlieinaticus 

 Mitchill ; Holocantlius melanotlius 

 Gronow ; Tetrodon lincohitiis I'oey. 

 Habitat: Cape Cod to Brazil, entering 

 rivers; Para. 



Number of Spe- 

 cies in the En- 

 Kainiliei. tire Area. 



Petromyzonidae 5 



(ialeidae 2 



Rajidae 2 



NarCobatidae i 



Myleobatidae i 



Uasyatidse 9 



Lepidosirenidse i 



Lepisosteidae 2 



Aspredinidae 22 



Dijjlomystidae i 



Siluridffi 300 



Hypophthalmidae 2 



Pygidiidae 66 



Callichthyidae 34 



Loricariidae 208 



Cyclopidae 23 



Catostomidae 5 



Cyprinidae 21 



Characidae 659 



Gymnotida; 31 



Electrophoridse i 



Synbranchidae i 



;\nguillidae i 



l"",ngraulidae 13 



Clupeida; 5 



SUMMARY. 



Number of Spe- Number of Spe- 



cies in the Am- cies in the En- 



azon Basin. Families. tire Area. 



Dorosomidae 4 



Elopidae 2 



Osteoglossidae i 



Arapaimidae i 



Paeciliidae 160 



5 Galaxiidae 7 



I Aplochitonidae 2 



Belonidae 8 



10 Mugilidae 11 



xVtherinids ^t, 



139 Polycentridae 3 



I Centropomids 8 



28 Serranidae 5 



16 Haemulidae 8 



81 Sciaenidae 13 



15 Percidae i 



Cichlidae 187 



Carangidae I 



317 Gobiidae 27 



22 Batrachoididae 2 



I Blenniidae I 



I Pleuronectidae 2 



Soleidae 12 



7 Tetraodontidae 2 



3 Totals 191 7 



748 



