REPORT OF THE SEPRETARY 19 



collootioii, mu.slly beelles, was received as a gift I'loiii the Colombian 

 Goveiiiment. Among other large lots of insects received was a col- 

 lection of 52,000 specimens taken b_y the United States Bureau of 

 l^lntomok^gy and Plant Quarantine, in connection with its activities. 



Accessions to the division of marine invertebrates inchided 17 

 .species new to the collections, representing crayfish, crabs, stoma- 

 topods, pycnogonids, ostracods, turbellarian and sipunculid worms, 

 earthworms, rotifers, sponges, and barnacles. The division's sec- 

 tional library received as a bequest from Dr. Charles Branch Wilson 

 a comprehensive library (approximately 2,500 books and pam- 

 phlets) on copepods. Among the more important accessions received 

 by the division of mollusks during the year was a collection made by 

 Dr. Alexander Wetmore and M. A. Carriker, Jr., in Colombia. This 

 collection included several new sj)ecies of mollusks. Two purchases 

 were made through the Frances Lea Chamberlain fund, consisting of 

 203 lots of 843 specimens. Several large collections of mollusks were 

 received, representing the fauna of Fiji, Australia, New Zealand, 

 Costa Rica, and Hawaii, as well as various localities in the United 

 States. Many smaller accessions included types of riew species. Ad- 

 ditions to the helminthological collection also contained numerous 

 types and cotypes. The Museum's collection of corals was augmented 

 by 447 s})ecimens, and among the more important accessions of the 

 division of echinoderms is the first specimen of the brittlestar 

 Ophiocoma oMlnops known from Peru. 



xVmong the more important accessions recorded by the division of 

 plants (National Herbarium) was a lot of 2,169 specimens received 

 in continuation of excliange from the Institute de Ciencias Natnrales, 

 Bogota, Colombia. A cooperative project between this institution 

 and the National IMuseum now in preparation, a descriptive Flora of 

 Colombia, will include a report on the above-mentioned material. 



Geology.— X\\H)\\<r, the 15G minerals added by purchase to the Roeb- 

 ling collection was a large, deeply etched aquamarine from Agua 

 Preta, Minas Geraes. Brazil, the finest single specimen acquired dur- 

 ing the year. Other accessions included exceptional examples of 

 copper minerals and lead carbonate, an unusual crystallized turquoise, 

 a monazite crystal from Brazil, and a mass of tlie phosphate 

 iithiophilite. Three acquisitions of exceptionally fine minerals were 

 obtained by purchase from the collection of Dr. Otto Runge through 

 the Canfield fund. The most outstanding additions to the gem col- 

 lection came through a bequest of Mrs. Mary Vaux Walcolt, among 

 which a valuable 12-carat alexandrite, a .string of pearls, and 14 

 necklaces of gem quality are worthy of special mention. The geo- 

 logical collections were also augmented by several important speci- 

 mens of meteorites and ores, among them a complete specimen of the 



501591—4,3 .3 



