42 REPORT OF NATIONAL MUSEUM, 1918. 



collected for the Museum more than 180 land shells, as well as crus- 

 taceans. From Prof. Max M. Ellis of Boulder, Colorado, 14 species 

 of discodrilid worms, including types and paratypes of eight new 

 species, were obtained in exchange. This important material con- 

 sists of excellently prepared microscopic slides complementary to the 

 series alread}' possessed by the Museum. More than 2,300 Crustacea 

 and a number of mollusks from various localities were secured from 

 the Boston Society of Natural History, also by exchange. Another 

 donation deserving mention was a splendid collection of miscellane- 

 ous marine invertebrates obtained in Magdalena Bay, Lower Califor- 

 nia, by the donor, Mr. C. R. Orcutt, of San Diego, and containing 

 the types of at least seven new species. 



As foreshadowed in last year's report, the entire West Indian land- 

 shell collection of Mr. John B. Henderson was brought from his 

 home and installed in a room in the mollusk section, where he is re- 

 vising the identifications and having the whole collection catalogued 

 so that it will become practically a part of the Museum collections. 

 The registration of the large collections donated by Mr. Henderson 

 in 1915 and 1916 was continued, and the large mass of miscellaneous 

 mollusks and marine invertebrates received during the year was like- 

 wise recorded and intercalated in their respective places in the 

 Museum collections. The poly gy rid mollusks were entirely relabeled 

 in consequence of their having been examined and their identifica- 

 tions and nomenclature revised by Mr. George H. Clapp, of Pitts- 

 burgh, who spent some time at the Museum. The labeling, recording, 

 and card cataloguing of the remainder of the collection of echino- 

 derms was completed to date, and the major part thereof was sys- 

 tematically arranged in storage stacks. Registration of the Philip- 

 pine madreporarian coral collection was begun, and that of the mad- 

 reporarian corals of the "West Indies continued. The entire helmin- 

 thological collection of the Museum was overhauled, placed in new 

 containers, relabeled, and arranged in racks, rendering this hitherto 

 chaotic mass of material available to students. 



The recent completion of monographic work b} r several specialists 

 rendered possible the labeling, registering, card cataloguing, and sys- 

 tematic arrangement in the Museum collections during the year of an 

 unusually large number of specimens, including groups of Philip- 

 pine mollusks and melanellid mollusks from the west coast of America 

 reported on by Dr. Paul Bartsch ; Foraminif era of the North Pacific, 

 by Dr. Joseph A. Cushman; calcareous sponges of the Albatross 

 Northwestern Pacific Expedition, 1906, by Mr. Sanji Hozawa; Dis- 

 codrilid worms, by Prof. Max M. Ellis; Cirripedia, by Dr. H. A. 

 Pilsbry ; parasitic copepods, by Dr. Charles Branch Wilson ; decapod 

 crustaceans, by Dr. Mary J. Rathbun and by Mr. Waldo L. Schmitt ; 

 and from the Albatross Philippine Expedition, 1907-1910, medusae by 



