224: TRANSACTIONS OF THE ' [1892 



Magotlij, I took occasion to examine the piles of the 

 landing at Arnold's fishing shore, as carefully as I was 

 able, without the aid of the hand dredge. This landing 

 is situated on Dividing Creek (one of the southern inlets 

 of the Magothy), one-half mile from the river proper. This 

 locality presents conditions apparently favorable in every 

 respect, and though no colonies were found I believe that 

 a more careful search will reveal that they are present at 

 this point or in this vicinity. 



During the fall of 1891 I visited Eound Bay in order to 

 see whether I could find the colonies in the Severn. Va- 

 rious submerged objects in the vicinity of the landing and 

 along the north bank of the river, as far as the Kerr's 

 sand quarries were examined, but none were found. In 

 rowing down stream toward the landing I examined sev- 

 eral points along the south bank with the same result, 

 until I came to the old wrecked schooner which lies, with 

 its stern submerged, in the mouth of Yalentine's Creek, a 

 few rods from its west bank. Growing upon the starboard, 

 near the bow, five feet under water, I found a few good 

 stems of Cordylophora, bearing hydranths. It is inter- 

 esting to note that here we have the colonies growing in 

 the same water with the oyster. 



I have not had an opportunity of making a careful 

 examination of any locality in the Patuxent. Judging 

 from what I have seen of the tide-water at ITottino-ham I 

 should expect to find Cordylophora at least as far up the 

 river as this point. 



During August, 1891, while engaged in making palse- 

 ontological collections for the Johns Hopkins University 

 from the Potomac basin, I roade the following incidental 

 observations : Yarious submerged objects at Pope's creek 

 were examined, with a negative result. At Mathias Point 

 Landing (Woodstock), Virginia, I found colonies in good 

 condition on the piles of an old dock, several rods above 



