12 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



hardly want to admit that iridea possesses any greater vitality than 

 fontinalis. I agree entirely with your quotation from "Fish Hatching 

 and Fish Catching," that they are more vigorous in every way than the 

 eastern trout, but are not as handsome, have no carmine specks, but 

 will live well in captivity and grow rapidly, except that I should want 

 to substitute the word "hardy" for "vigorous." It does not seem to 

 me that the California brook trout are more vigorous than the Atlantic 

 brook trout, but they are undoubtedly more hardy. 



Mr. von dem Borne desires me to ask the following question : 



12. — What kind of places do those four above-mentioned fishes select 

 for spawning : running or still water, on plants, on stones, on gravelly 

 or sandy or muddy bottom ; in deep or shallow water % 



A. — In reply to Herr Borne's inquiry, allow me to say that Salvelinus 

 fontinalis and Salmo iridea always seek clear, running water and a 

 gravelly bed where they may deposit their eggs. 



13. — Is there only but one California trout, or is the trout of McCloud 

 River the true rainbow trout, and has California another mountain trout ? 



A. — There is but one California trout which has been introduced into 

 the Atlantic States, and, indeed, but one that has been much culti- 

 vated. This is Salmo iridea, or the " rainbow trout," or the "Califonia 

 mountain trout," or " McCloud River trout," these four names last given 

 being synonymous. Whenever any one hears anything about Salmo 

 iridea, or " rainbow trout," or " California mountain trout," or "McCloud 

 River trout," he may know that the same fish is always meant under all 

 these different names. California has several other mountain trout, but 

 they are not yet generally known or much cultivated. 



14. — Which one do you intend to send us ? 



A. — Consequently the California trout which Professor Baird intends 

 to send to Germany is the fish (Salmo iridea) just mentioned. 



15. — What month does it spawn? Californian Salmo quinnat spawns 

 at home much earlier than our Salmo salar, but I might suppose that 

 this entirely depends on the climate, because the California salmon 

 which our Mr. Schuester raised in his tanks up to spawning time did not 

 spawn in the California time, but in our Salmo solar time (November), or 

 very near so. 



A. — This question has already been answered under 10, which see. 



RESULT OF PEAIVTIIVG SHAD I.\ THE OHIO RIVER. 



By WILLIAKE GRIFFITH. 



The first white shad of the season was taken on the Falls yesterday. 

 This makes the sixth consecutive run of white shad in the Ohio river. 

 Louisville, Ky., May 7, 1881. 



