MUSEUM OF COMPARATIVE ZOOLOGY. 7 



Mr. Alvin Seale worked for four months upon the Museum col- 

 lection of Clupeoids, a group of widely distributed fishes of con- 

 siderable importance commercially. He prepared a descriptive 

 list of the Museum series which contains about 175 species repre- 

 sented by more than 4,000 specimens. 



Mr. W. F. Clapp has continued his work upon the collection of 

 mollusks throughout the year, dividing his time between the prepa- 

 ration of a report upon the series of shells from the Solomon Islands 

 collected by Dr. W. M. Mann, and the identification, registration, 

 and arrangement of the accessions received. These accessions 

 have been very numerous; the more important are the Gulick 

 series of Hawaiian land shells, (x\chatinellidae), received from the 

 Boston Society of Natural History; a very large series of Liguus 

 from southern Florida, many Cuban land shells and several hun- 

 dred choice species from Japan and the Solomons, all the gift of 

 Dr. Thomas Barbour. A number of species of Liguus received in 

 exchange from the Academy of Natural Sciences of Philadelphia 

 supplements the Museum series. 



Professor Raymond has completed a monograph on the appen- 

 dages of the trilobites and worked up the large series of trilobites 

 from Newfoundland collected in 1918 by Professors Schuchert and 

 Dunbar; in connection with this work, he has described such tri- 

 lobites as proved to be new that were collected in 1918, during 

 the Shaler Memorial expedition in southwestern Virginia and 

 eastern Tennessee. In return for Professor Raymond's work upon 

 the Newfoundland trilobites, the Museum receives, through the 

 courtesy of Professor Schuchert, a large number of species at 

 present unrepresented in its collection. 



The Library contains 55,804 volumes and 57,708 pamphlets; 

 620 volumes and 1,900 pamphlets have been received during the 

 year. 



The publications of the year include one volume and four parts 

 of volumes of the Memoirs, thirteen numbers of the Bulletin and 

 the Annual Report, a total of 1,374 (872 quarto and 502 octavo) 

 pages, illustrated by 159 (135 quarto and 24 octavo) plates. 

 The volume of Memoirs contains Dr. Chamberlin's Report on the 

 polychaete annelids collected during Mr. Agassiz's Albatross 

 expeditions of 1891, 1899-1900, and 1904-1905. This memoir, 



