16 



NATURAL HISTORY BULLETIN 



Station 5. Cuba: off Havana, about 2V2 miles, 140 fms. 1 

 specimen. 



Station 10 Cuba: off Havana, about 2V2 miles, 200 fms. 3 

 specimens. 



Station 11. Cuba: off Havana, about 2V2 miles, 200 fms. 

 1 specimen. 



Station 13. Cuba: off Havana, 200 fms. 1 specimen. 

 Station 16. Cuba: off Havana, 200 fms. 1 specimen. 

 No label, 1 specimen. 



Democrinus rawsonii 



BMzocrinus rawsonii Pourtales, 1874, Illus. Cat. M. C. Z., no. 8, p. 27; 

 pi. V. 



Democrinus rawsonii A. H. Clark, 1917. Jour. Washington Acad. Sei., 7, 

 p. 392. 



In the "Narrative" (p. 164), speaking of the dredging re- 

 sults on Pourtales Plateau, Professor Nutting says: ''We es- 

 pecially regretted our failure to secure specimens of Rhizo- 

 crinus, a genus which is represented by abundant individuals 

 in certain, definite spots on the Pourtales Plateau." This dis- 

 appointment would have been lessened had Professor Nutting 

 known that the genus was represented in the collections he 

 had made off Havana. It was a pleasant surprise to me in 

 examining the specimens of Isocrmus decorus to find among 

 them part of the stalk, with calyx attached, of an adult Bour- 

 guetocrinid, which proves to be Democrinus rawsonii. There 

 is no clue as to the station at which the specimen was taken 

 but there is no doubt of its being from the Pentacrinus ground. 

 The stem is about 145 mm. long and consists of 60 segments. 

 The calyx is 4 mm. high and 1.85 mm. in diameter. The sutures 

 are nearly obliterated and were visible only when the calyx was 

 dried and treated for a moment with benzole. The arms are 

 entirely lacking. 



ECHINOIDEA 



The collection of echini sent to me consists of 381 specimens, 

 representing 21 species. Nearly all are in excellent condition 

 and the many young specimens are very interesting. Besides 



