PARECHINUS MAGELLANICUS. 275 



Parechinus magellanicus, comb. nov. 



Echinus magellanicus Philippi, 1857. Arch. f. Naturg., Jahrg. XXIII, 1, p. 130. 



In addition to the more than two hundred and forty specimens in the M. C. Z. 

 collection, the large series taken by the "Albatross" when on her voyage from 

 New York to San Francisco, in the Straits of Magellan in the winter of 1887-88 has 

 been available. There is a range in size from 2 to upwards of 40 mm. h. d., the 

 largest specimens being from the Falkland Islands. There is great diversity in 

 the length of the primary spines and in color. It is rather striking that although 

 the "Albatross" covered essentially the same ground as the "Hassler," no speci- 

 mens of magellanicus were taken having the short, blunt reddish spines so charac- 

 teristic of a large proportion of the "Hassler" collection. All of the "Albatross" 

 specimens have whitish or light colored primary spines. The color of the test 

 on the other hand is very variable. As a rule the median ambulacral and inter- 

 ambulacral areas are grayish or dull violet but they may be bright violet or 

 reddish, and in one specimen they are bright red. The poriferous areas are 

 usually rather light and often have a greenish tinge and in some specimens they 

 are, abactinally at least, distinctly yellow-green. 



The "Albatross" specimens were taken at the following places: 



Mayne Harbor, Patagonia, Chile. 



Port Otway, Patagonia, Chile. 



Station 2768. Off San Jose Peninsula Patagonia, Argentina; 42 24' S., 

 61 38' 30" W. Bott. temp.? 43 fathoms. Dk. s., bk. sp. 



Station 2769. Off Cape Two Bays, Patagonia, Argentina; 45 22' S., 64 20' 

 W. Bott. temp.? 51.5 fathoms. Gn. m., fne. s. 



Station 2776. Straits of Magellan ; 52 41' S., 69 55' 30" W. Bott. temp.? 

 21 fathoms. S., g. 



Station 2777. Straits of Magellan; 52 38' S., 70 10' 30" W. Bott. temp.? 

 19.75 fathoms. G. 



Station 2778. Straits of Magellan; 53 1' S., 70 42' 15" W. Bott. temp. 

 47.9. 61 fathoms. Gy. s., bk. sp. 



Station 2779. Straits of Magellan; 53 6' S., 70 40' 30" W. Bott. temp. 

 46.9. 77.5 fathoms. Gn. oz. 



Station 2780. Near Port Otway, Patagonia, Chile; 53 1' S., 73 42' 30" W. 

 Bott. temp. 46.9. 369 fathoms. Gn. m. 



Station 2785. Gulf of Penas, Chile; 48 9' S., 74 36' W. Bott. temp. 46.9. 

 449 fathoms. Bu. m. 



