BARBADOS-ANTIGUA REPORTS 107 



Barbados is the type-locality for hartletti and all of the speci- 

 mens at hand came from there. At two of the following stations 

 Stylocidaris was also taken. 



Station 7. May 16, 1918. W. by N. Pelican Island, 2 miles, 80 

 fms. Rocky bottom. Tangles. 1 specimen. 



Station 34. May 23, 1918. S. E. of Hastings, 2 miles off shore, 

 80-90 fms. Rocky bottom. Tangles. 1 specimen. 



Station 35. May 23, 1918. S. W. of Needham Point, 21/2 

 miles off shore, 80-90 fms. Rocky bottom. Tangles. 1 

 specimen. 



Station 36. Slay 23, 1918. S. W. of Carlisle Bay, 2 miles off 

 shore, 80-90 fms. Rocky bottom. Tangles. 1 specimen. 



Station 37. May 23, 1918. Off Pelican Island, 2i/o miles, 100 

 fms. Rocky bottom. Tangles. 1 specimen. 



Station 44. May 25, 1918. N. W. Pelican Island and S. W. 

 Lazaretto, 21/2 miles off shore, 90-100 fms. Medium coarse 

 sand. Dredge. 1 specimen. 



CENTRECHINUS ANTILLARUM 



Cidaris (Diadema) antillariim Philippi, 1845. Arch. Naturg., 

 jhg. 11, 1, p. 355. 



Diadema setosum A. Agassiz, 1872. Rev. Ech., p. 274 (in part). 

 Centrechinus antiUarum H. L. Clark, 1918. Bull. Lab. Nat. Hist. 

 Iowa, 7, No. 5, p. 24. 



Only a single small specimen of this most characteristic West 

 Indian sea-urchin is in the present collection. It has the test 

 about 30 mm. in diameter while the primary spines are some 55 

 mm. in length. They still show traces of the youthful banding, 

 so striking a feature of much smaller specimens, but the general 

 impression of this specimen is unicolor, though it is by no means 

 really black. 



In the "Narrative", Professor Nutting says this "black nui- 

 sance" is found "almost everywhere in shallow water, both on 

 sandy and rocky bottom", about Barbados, while it is also 

 "abundant" at Antigua. Apparently it is abundant wherever 

 it occurs, for it is very common at the Tortugas and along the 



