EIGENMANN: the freshwater fishes of BRITISH GUIANA 3 



US under still greater obligations by instructing their various agents to help us in 

 every possible way. The officers of the railway between Georgetown and New 

 Amsterdam gave us similar help. Mr. Lyman Jones and Mr. St. Aubyne of the 

 Lama Water Conservancy placed boats, a house, servants, and a number of men 

 at our disposal, and the collections from Lama Stop-Off, Maduni Stop-Off, and 

 Cane Grove Corner are altogether due to the disinterested help of these gentlemen. 

 The most' generous interest in the success of the expedition was displaj'ed by Dr. 

 Edwin Bovallius and Mr. George Linnell, who furnished me with boats and a 

 crew of sixteen Indians, who conducted me from Kangaruma to the Chenepowo 

 River at Holmia and to the Aruataima Cataract. Mr. William Grant, the Indian 

 guide and interpreter on this trip, became an enthusiastic fisherman, and has sent 

 me many new things since my return. ^ At Holmia the quarters of the Essequibo 

 Exploration Company were placed at my disposal, and here I was able to recuperate 

 from a fever, while my crew were gathering poison and fishes. The success in the 

 upper Potaro is entirely due to the generous help of Messrs. Bovallius and LinneU. 

 At Tumatumari jNIr. Brummel, at Wismar Mr. J. D. Spence, and at Georgetown 

 Messrs. J. B. Mitchell, James Rodway, C. W. Anderson, E. A. V. Abraham, and 

 Professor J. G. Harrison aided me in various ways. Mr. B. S. Conrad of George- 

 town, to whom I had a letter of introduction, greatly assisted the expedition with 

 advice and guidance. He not only generously devoted much of his own valuable 

 time to the interests of the expedition, but introduced mc to other gentlemen, who 

 aided me in a variety of ways. I am indebted to Mr. E. S. Shideler, who acted as 

 volunteer student assistant on this trip. He collected with me most of the time, 

 and the collections from IVIalali, Bartica, the Botanic Garden, and the northwest 

 are entirely due to his efforts. 



The sunmier of 1910 was devoted to examining the types of fishes from Guiana 

 in European museums. Drs. G. A. Boulenger and C. T. Regan of the British 

 Museum, Drs. Th. W. van Lidth de Jeude and C. M. L. Popta of the Leyden 

 Museum, Director Dr. Max Weber of the Amsterdam Museum, Director Dr. A. 

 Brauer and Dr. P. Pappenheim of the Royal Museum in Berlin, Intendant Hofrat 

 Dr. Fr. Steindachner of the K. K. Naturhistorisches Hofmuseum in Vienna, and 

 Dr. J. Pellegrin of the Musee d'Histoire Naturelle in Paris all cordially cooperated 

 by placing the types in their keeping at my disposal. 



1 Mr. Grant collected in the following places not reached by me: Nickaparoo (or Nickaparu) Creek, 

 branch of the Ireng; Maripicru, a branch of the Ireng between Wontyke and Karakara, above the Karona 

 falls; Chipoo, a tributary of the Ireng between Karakara and the Rupununi; Papan, near Eworora; Twoca 

 Pan, between the Rupununi and Pununike; Rupununi, opposite jMassara Landing; creek between Rapoo and 

 the lower faUs; Packeoo should possibly be "Pacu" Falls, in the Rupununi; Gatuck Creek, Potaro Highland; 

 Yakeatonuk Fall, Potaro River. Some of these names are spelled in several ways on the different labels. 



