ECHINODERMS OF SMITHSONIAN-HARTFORD EXPEDITION CLARK 453 



ECHINOIDEA 



EUCIDARIS TRreULOIDES (Lamarck) 



Localities.— Smithsonmn-Uavtiord station 3, Bahamas (1, E. 5586). 

 Station 12, Haiti (6, E. 5578). 



CENTRECHINUS ANTILLARUM (Philippi) 



Localities. — Smithsonian-Hartford station 12, Haiti (1, E, 5452). 

 Station 20, Puerto Kico (1, E. 5583). 



Notes. — The specimen from station 12 is small, with banded dark 

 brown and white spines. In life the large specimen from station 20 

 was reddish, with pure white spines. 



LYTECHINUS VARIEGATUS (Leske) 



Localities. — Smithsonian-Hartford station 4, Bahamas (3, E. 5596). 

 Station 20, Puerto Rico (1, E. 5584). Station 26, St. Thomas (6, E. 

 5579). Station 28, St. John (1, E. 5525). 



Notes. — The specimens from station 4 are 5-9 mm in diameter and 

 white in color. The specimen from station 20 is white, with the spines 

 in the 10 poriferous zones green ; a narrow wavy red line runs down 

 the middle of each interambulacrum. The largest specimen from sta- 

 tion 26 is 76 mm in diameter. 



TRIPNEUSTES ESCULENTUS (Leske) 



Localities. — Smithsonian-Hartford station 3, Bahamas (3, E. 5585). 

 Station 28, St. John (1, E. 5524). Station 33, St. Croix (3, E. 

 5523). Station 66, St. Thomas (2, E. 5588). 



ECHINOMETRA LUCUNTER (Linnaeus) 



Localities. — Smithsonian-Hartford station 9, Bahamas (3, E. 5383). 

 Station 12, Haiti (31, E. 5389, E. 5390, E. 5391, E. 5426, E. 5446). 

 Station 15, Haiti (1, E. 5408). Station 16, Puerto Rico (1, E. 5394). 

 Station 17, Puerto Rico (5, E. 5392, E. 5393). Station 28, St. John 

 (7, E, 5384, E. 5385, E. 5386). Station 38, St. Croix (1, E. 5575). 

 Station 66, St. Thomas (2, E. 5387, E. 5388). 



Notes. — The specimens are all small, the smallest having a diameter 

 of 3.4 mm (station 12, Haiti, E. 5389). In the smallest specimens the 

 spines are whitish or light greenish with white tips and are con- 

 spicuously banded, having either one dark band just beyond the 

 middle, or two dark bands at about the ends of the first and second 

 thirds. 



In the larger specimens the spines are usually dark brownish with 

 an olive tinge, less commonly with a violet tinge. Rarely they are 

 light drab, and occasionally they are more or less bright light olive 



