MUSEUM OF COMPARATIVE ZOOLOGY. 



13 



REPORT ON THE MOLLUSCA AND CRUSTACEA. 



By AValter Faxox. 



Mollusca. — The collection of shells given to the Museum 

 by the heirs of Warren Delano, noticed in last year's report, was 

 worked up last winter by Mr. Charles W. Johnson, of the Wagner 

 Free Institute of Philadelphia, and during the spring all the 

 shells comprised in this collection, answering to 880 catalogue 

 numbers, were numbered, catalogued, and arranged by Miss E. 

 B. Biwant. The whole expense involved in the care of this 

 collection was generously borne by Mr. Frederic A. Delano, of 

 Chicago. Accompanying the Delano shells is a beautiful set of 

 colored fac-similes of the sixty-one plates of George Perry's 

 " Conchology " (London, 1811), done in Hong Kong for Mr. 

 Delano by Chinese artists about 1845. 



Mr. Agassiz has given a small collection made in Samoa by 

 Dr. W. McM. Woodworth in 1898. Mr. F. N. Balch, of the Har- 

 vard Law School, has deposited specimens of Assiminea modesta 

 Verr. from Cold Spring Harbor, Long Island. Further additions 

 to the New England collection have been made by the Rev. R. 

 K. Smith and Mr. W. F. Clapp. The collection of Achatinellae 

 has been improved by exchanges made with Mr. D. W. Peck. 

 Remarkably perfect specimens of Vermetus from the West Indies 

 have been purchased of N. L. Wilson, of Boston. 



MM. Bouvier and Fischer's memoir on the anatomy of Pleuro- 

 tomaria, based on a specimen furnished by this Museum, lias 

 been published in the Archives de Zoologie Experimental. 3d 

 Ser., T. vi., Nos. 1, 2, 4 pll., 1898. The authors give a list of all 

 the known specimens of the four recent species of Pleuroto- 

 maria. To these should be added two specimens of P. adan- 

 soniana in this Museum, never hitherto recorded. They were 

 both dredged in ninety-four fathoms by the "Blake" at Station 

 276, off the Barbados. One is a fine specimen in the flesh, 

 whose shell measures 102 mm. in longest base diameter by ( .'<» 



