1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 83 



10. Salmo hoodi. — As already noticed by Dr. Giinther, part of the 

 specimens called Salmo hoodi by Dr. Richardson belong to 8. Jbntinalis. 

 The other, a stuffed skin, I have examined in Dr. Glinther's presence, 

 and both of us were convinced that it was an ordinary 8. namaycush. 

 The name hoodi should therefore be dropped. 



All the above-mentioned discrepancies between Mr. Garmau's results 

 and those reached by Dr. Beau, Professor Gilbert, and myself are more 

 in name than in fact. Xo group in our vertebrate fauna offers such 

 difficulties as the Salmonidw, and it is rather remarkable that with so 

 many different points of view such su.bstantial agreement should exist. 



Indiana University, March 17, 1885. 



REPORT UPON THE ECHINI COLLECTED BY THE UNITED STATES 

 FISH COMMISSION STEAMER ALBATROSS, IN THE CARIBBEAN 

 SEA AND GULF OF MEXICO, JANUARY TO MAY, 1884. 



By RI€HAR» RATHBIJIV. 



From January to May, 1884, while temporarily in the service of the 

 Hydrographic Bureau of the Navy Department, the Fish Commission 

 steamer Albatross, Lieut. Commander Z. L. Tanner, TJ. S. N., in com- 

 mand, made about fifty dredgings in the Caribbean Sea, and in the Gulf 

 of Mexico oft" the northern side of the island of Cuba, the greatest 

 depth reached in dredging having been 1,701 fathoms. Quite a rich 

 collection of deep water animals was obtained, considering the small 

 amount of time allotted to the natural history work, and at each of the 

 ports visited the naturalists availed themselves of every opportunity 

 to procure as complete a representation as possible of the littoral spe- 

 cies. A list of the Echini obtained, accompanied with a few brief notes, 

 is given below. 



The shore stations at which Echini were collected, are as follows: 

 Key West, Fla. ; the island of St. Thomas; Jamaica ; the island of Old 

 Providence, off" the coast of Nicaragua ; the island of Curasao, off the 

 coast of Venezuela ; the port of Sabanilla, United States of Colombia ; 

 and San Antonio, at the west end of Cuba. Only 25 species in all were 

 obtained, and of these two are Spatangoids in very fragmentary condi- 

 tion, and still unidentified. Of the remainder, 9 are littoral species, 

 although a single specimen of Biadema setosum was dredged at a depth 

 of 215 fathoms, and 14 were from depths between 25 and 1,639 fathoms. 



The identifications have been made by means of the recent pub- 

 lications of Mr. Alexander Agassiz, and a nearly complete series of 

 the Echini supplied to the National Museum by Mr. Agassiz from the 

 collections obtained by the Coast Survey steamer Blake in the region 

 under discussion, from 1877 to 1880. There are but few facts to 

 add to those already published by Mr. Agassiz in his very elaborate 

 reports, and the notes have therefore been made very brief Many of 



