DEPARTMENT OF MARINE INVERTEBRATES. 241 



mens were i^rocured. The brcU-hyuiaii and anomourau crustaceiius have 

 been referred to Mr. Benedict for study. In January, 1891, the Alba- 

 tross jn'oceeded southward, and under the direction of Prof. Alexander 

 Agassiz, made a careful biological survey of the region lying off Panama 

 and about the Galaj)agos Islands, running several lines of dee]) sea. 

 dredgings, and carrying the observations over the plateau in shallow 

 water adjacent to the continent. IS"o similar investigations had been 

 conducted in this part of the Pacific prior to the visit of the Alha- 

 tross, except close along the coast, and very important scientific results 

 were therefore obtained. The natural-history collections will be studied 

 under the supervision of Prof. Agassiz, after which the type series of 

 specimens will be deposited in the National Museum. 



The Fish Hanli was engaged during the summer of 1<S*,)() in an inves- 

 tigation of the oyster grounds of Long Island Sound, in which Mr. 

 Benedict participated for about eight weeks. During the winter and 

 early spring of 1801, the same vessel made a survey of the natural oys- 

 ter beds of the coast of South Carolina, Mr. Benedict again being a 

 member of the scientific party. Neither of these explorations by the 

 steamer Fish Hawh aftbrded opportunity for making extensive collec- 

 tions of marine invertebrates, but in South Carolina, especially, many 

 obscure forms were obtained from the brackish Avaters which had i)re- 

 viously been little studied. 

 S3I 91, PT 2 16 



