AMERICAN FISHES IN ARGENTINA. 965 



On May 6 of this year I left New York with about 300,000 steelhead trout 

 (Sahno gairdneri), these being the sixth lot of eggs to leave the United States 

 for the Argentine National Government. These eggs were taken to South- 

 ampton, England, where 50,000 rainbow eggs from Germany were added to 

 the consignment. They left England May 15, arriving in Buenos Aires on June 

 7, and at the La Cumbre hatchery on the 13th of the same month. The loss of 

 eggs en route from the United States was very small, and not over 10 per cent 

 on the rainbow eggs from Germany, this latter loss being entirely due to rough 

 handling between Germany and England in the absence of any attendant. 

 From England to the La Cumbre hatchery the loss was less than one-half of 

 I per cent. The loss of the oldest steelhead eggs during the hatching was 6| 

 per cent, mostly due to these eggs being a trifle too far advanced when shipped. 

 The loss of the second oldest steelhead eggs during the same period was about 

 isKper cent, due greatly to the eggs being a trifle young when packed. The 

 loss of the youngest of this lot of eggs while hatching was i8| per cent, due 

 also, no doubt, mostly to the fact that the eggs were rather young for packing. 

 There is, however, no way to avoid these losses on journeys of this length, as 

 some eggs must be shipped when younger than others to guard against the pos- 

 sibility of the older eggs hatching en route. The loss of steelhead fry until 

 they were six weeks old was 4 per cent. At this age they were as strong and 

 healthy a lot of young trout as I have ever seen. All were feeding at this time. 



The loss of the rainbows during the hatching period was about lo^per cent, 

 and the loss of fry until six weeks old was 2| per cent. At six weeks of age 

 these were all taking food, and were very healthy and strong. 



