eigenmann: the FRESHWATER FISHES OF BRITISH GUIANA 29 



The Lau-lau is mentioned without referring it to any other name. 



One other collection of note was made in British Guiana by a Mr. A Ehrhardt. 

 He collected at Mocco Mocco and Arisaro, spending about two months on the Esse- 

 quibo. Part of his collection is in the British Museum, part in the Berlin Museum. 

 The portion in the British Museum was reported upon by Giinther in his " Catalogue 

 of Fishes in the British Museum," and in a short paper " On New Species of Fishes 

 from the Essequibo," published in the Annals & Magazine of Natural History, 

 December, 1863. 



The new things described are: Acara punctulata = Crenicara punctulata 

 (Giinther) ; Pimelodus holomelas = Rhamdia holomelas (Giinther) ; Auchenipterus 

 obscurus = Trachycorystes obscurus (Giinther); Helogenes marmoratus Giinther; 

 Crenuchus spilurus Giinther; Leporinus megalepis Giinther = Leporinus maculatus 

 Mutter & Troschel, and Xiphoramphus ferox Giinther = Acestrorhynchus falcatus 

 (Bloch). 



As I have already stated in the introduction, in none of these papers was a 

 definite locality given. 



In recent years Mr. T. Sidney Hargreaves collected fresh-water fishes in 

 British Guiana. They were deposited in the Georgetown Museum. Few have 

 definite locality labels. Mr. Hargreaves published a series of articles in "The 

 Argosy," a local paper, which were reprinted in book form. The booklet is only 

 of local interest, and adds but little which is of a sufficiently specific nature to be 

 quoted in a scientific work. 



