EIGENMANN: THE FRESHWATER FISHES OF BRITISH GUIANA 



27 



107. Pygopristis fumarius Muller & Troschel, 



p. 637. 



108. Serrasalmo rhombeus Muller & Troschel, p. 



637. 



109. Serrasalmo aureus Spix, p. 637. 



110. Catoprion mento Muller & Troschel, p. 



637. 



111. Myletes rubripinnis Muller & Troschel, p. 



637. 



112. Myletes schomburgkii Muller & Troschel, 



p. 637. 



113. Myletes hypsauchen Muller & Troschel, p. 



637. 



114. Myletes latus Muller & Troschel, p. 638. 



115. Myletes asterias Muller & Troschel, p. 638. 



116. Myleus setiger Muller & Troschel, p. 638. 



117. Osteoglossum bicirrhosum Spix, p. 638. 



118. Arapaima gigas Muller, p. 638. 



119. Megalops atlanticus Valenciennes, p. 639. 



120. Elops saurus Linnaeus, p. 639. 



121. Engraulis tlirissoides Muller & Troschel, p. 



639. 



122. Gymnothorax ocellatus Agassiz, p. 638. 



123. Gymnotus electricus Linnseus, p. 639. 



124. Sternopygus virescens Muller & Troschel, 



p. 639. 



125. Sternopygus lineatus Muller & Troschel, p. 



640. 



1 26. Rhamphichthys rostratus Muller & Troschel, 



p. 640. 



Rupununi, Essequibo, and near-by swamps. 4-6 

 in. Pygopristis denticulatus (Cuvier). 



Rupununi, Takutu, and near-by swamps. 12-14 

 in. = Serrasalmo rhombeus (Linnseus). 



Essequibo and Rupununi. 6-8 in. = ? Serrasal- 

 mo gymnogenys Giinther. 



Lake Amucu. 3-4 in. = Catoprion mento 

 (Cuvier). 



Lower Essequibo. 4-6 in. = Myloplus rubri- 

 pinnis (M. & T.). 



Rupununi, Takutu, Zuruma, as well as swamps of 

 the savannah. 4-6 in. = Myleus pacu (Schom- 

 burgk). 



Standing water, Tapacuma Lake. 3^4 in. = 

 Metynnis hypsauchen (Muller & Troschel). 



Generally distributed in British Guiana. 10-12 in. 

 = Myloplus rhomboidalis (Cuvier). 



Essequibo and Mazaruni near falls. 2 ft. = 

 Myloplus asterias (Muller & Troschel). 



Essequibo near cataracts and in swift water. 10- 

 12 in. = Myleus pacu (Schomburgk). 



Still water of Rupununi, Takutu, Rio Branco and 

 near-by swamps of savannah, and in Lake Amu- 

 cu. Yi ft. = Osteoglossum bicirrhosum Van- 

 delli. 



Generally distributed in streams of British Guiana. 

 8-10 ft. = Arapaima gigas Cuvier. 



Along the coast. 2 ft. = Tarpon atlanticus 

 (Cuvier & Valenciennes). 



Along the coast. 12-14 in. 



Cuyuni. 4-7 in. = Stolephorus spinifer (Cuvier 

 & Valenciennes). 



Plantation drains and standing water. 3-4 ft. 

 = Lycodontis ocellatus (Agassiz) . 



All fresh water of British Guiana. 7 ft. = Elec- 

 trophorus electricus (Linnaeus). 



Lake Amucu and forest streams. 18-20 in. = 

 Eigenmannia virescens (Valenciennes). 



Small forest brooks. 6-10 in. = Eigenmannia 

 virescens (Valenciennes) . 



Demerara River. 4-6 ft. = Rhamphichthys ros- 

 tratus (Linnseus). 



