32 ANNUAL REPORT OF THE 



REPORTS ON THE LOWER INVERTEBRATES. 

 ECHINODERMS. 



By Hubert Lyman Clark. 



The past year has been devoted almost wholly to the Echini. 

 The labeling and cataloguing of the collection has been com- 

 pleted and shows that about four fifths of the known species 

 of Echini are represented. There are more than a hundred 

 holotypes and nearly fifty cotypes. Besides the work on the 

 catalogue considerable time was devoted to the completion of the 

 manuscript for Part IV of "Hawaiian and other Pacific Echini/' 

 and to a revision of the classification of the clypeastroids. 



Two weeks in August, 1910, were spent with Dr. H. B. Bigelow 

 in marine collecting at Grand Harbor, Grand Manan. The 

 finding near low water mark of a specimen of Phyllophorus, a 

 genus of holothurians of whose American species almost nothing 

 is known seemed to warrant further investigation. Accordingly 

 two weeks in July, 1911, were spent at the same place and 

 eighteen specimens of Phyllophorus were secured, besides a large 

 series of the remarkable worm Priapulus. Considerable atten- 

 tion was given each summer to the problem of retaining the 

 natural colors of starfishes when prepared for the museum. While 

 the problem is by no means solved, no little progress was made 

 and some fine specimens of Henricia were prepared which have 

 retained their color for a year with little alteration. Altogether 

 373 specimens of twenty species of echinoderms were added to the 

 collections as a result of the Grand Manan expeditions. 



Aside from this material the principal additions to the collection 

 have been donations from Dr. R. L. Jackson of many fine Echini, 

 some in large series, and from Dr. L. E. Griffin of nearly five 

 hundred echinoderms from the Philippine Islands, quite a num- 

 ber of which were real desiderata. A series of 158 specimens 

 of fifteen species from Tongoa, Espiritu Santo, New Hebrides, 

 was presented by Mr. Samuel Henshaw. Dr. E. A. Andrews of the 

 Johns Hopkins University presented an Astrophyton and a dozen 

 holothurians from Jamaica. Mr. W. F. Clapp donated twenty- 



