[CEYLON FEARL OYSTER FISHERIES 1904 SUPPLEMENTARY REPORTS, No. XL] 



REPORT 



ON THE 



CRINOIDEA 



COLLECTED BY 



Professor HERDMAN, at CEYLON, in 1902. 



BY 



HERBERT C. CHADWICK, 



CURATOR OF THE BIOLOGICAL STATION, PORT ERIN, ISLE OF MAN. 



[With ONE PLATE.] 



The collection of Crinoidea obtained by Professor Herdman during his expedition to 

 Ceylon, and kindly placed in my hands for examination, is a most interesting one, and 

 makes a substantial addition to our knowledge of the Comatulid fauna of Ceylon. 

 No less than 10 species, of which one at least appears to be new to science, are added 

 to the list of species already known from that country, and although it is remarkable 

 that in so large a collection no specimen of Antedon adeonce, one of the first species 

 recorded from thence, should be found, it is very satisfactory to be able to give a full 

 description of another early, but little-known species, A. reynaudi. 



I wish here to express my sincere thanks to Professor Herdman for his kindness in 

 entrusting the collection to me, and in jjrocuring for me copies of several important 

 papers. For similar generous help in regard to literature I would thank also my 

 friends Dr. W. E. Hoyle, Mr. F. W. Headley, Mr. R. Okell and Mr. C. Roeder. 



The following is a list of the stations at which Comatulidse were obtained, arranged 

 according to their geographical position : 



West Coast of Ceylon. 



STATION I. Five miles west and south-west of Negombo, 12 to 20 fathoms ; bottom 

 coarse yellow sand with a few dead shells; temperature of sea, 7 7 "5 F. 



STATION II. From 7 to 14 miles north of Negombo, 5 miles off shore; 8 to 

 9 fathoms ; bottom coarse yellow sand, shells, stones, and small coral ; tempera- 

 ture of sea, 77'5 F. ; specific gravity, 1'023. 



