Near the Yacht Club pier were found many _Polinices heros_, and their red-brown “sand-collars.” In the Jacquet were many _Litorina littorea_ and _Litorina rudis_. On the exposed beach, nearer the town, we found _Mytilus edulis_. On the rocks, in the Racquet, we found _Thais lapillus_ and a host of _Acmaea testudinalis_ ranging in size from one-eighth of an inch to about an inch in diameter. In the mud, at the base of the rocks, were a multitude of _Buccinum undatum_, _Neptunea decemcostata_, ranging in size from one-eighth of an inch to about an inch in diameter. In the mud, at the base of the rocks, were a multitude of _Buccinum undatum_, _Neptunea decemcostata_, and _Colus stimpsoni_, all alive and half-buried. Some dead specimens of _Aporrhais occidentalis_ were also found, five of them being full-grown. On the suggestion of Capt. Danforth, we constructed a dredge, and endeavored to dredge Bear Island Bar from his motor-boat. Here we found quantities of _Lacuna vincta_, _Alectrion obsoleta_, _Cylichna alba_, and two _Polinices triseriata_. There were some soldiers encamped at Digby, and they used to gather _Litorina littorea_ and steam and eat them, without any flavoring. They sometimes ate _Thais lapillus_ also. One day, after a rain, we found two _Helix hortensis_ crawling along the road. A NEW TYPE OF THE NAYAD-GENUS FUSCONAIA. GROUP OF F. BARNESIANA LEA. BY A. E. ORTMANN. During the study of the nayad-fauna of the upper Tennessee, the present writer found that there exists, in this region, a peculiar type of shells, belonging to the genus _Fusconaia_, the various forms of which have been described previously under a great number of specific names, which, however, seem to belong all to one species. In addition, among material received from L. S. Frierson from the Ozark Mountains, a form was discovered which presented the same structure. The oldest name for the upper Tennessee form is _Unio barnesianus_ Lea. A more detailed account of its various phases is to be given elsewhere, and it suffices here to mention only those forms which belong here. According to obesity, I distinguish three local, or ecological races: 1. FUSCONAIA BARNESIANA (Lea) 1838. _U. barnesianus_ Lea, ’38. _U. meredithi_ Lea, ’58. _U. pudicus_ Lea, ’60. _U. Lyoni_ Lea, ’65. _U. tellicoensis_ Lea, ’72. _U. lenticularis_ Lea, ’72. As the normal (most abundant) forms we may regard _U. meredithi_, _pudicus_ and _lenticularis_, which differ from each other only in the development of the rays (topotypes examined). _U. barnesianus_ is a slightly more elongated individual, with poorly developed rays. _U. tellicoensis_ (topotypes examined) is a _lenticularis_ slightly more swollen; and _U. Lyoni_ forms the transition toward var. _tumescens_, having a little more elevated beaks, greater obesity, and rather distinct rays. 2. FUSCONAIA BARNESIANA BIGBYENSIS (Lea) 1841.