1888.] MICROSCOPICAL JOURNAL. 225 



Notes on Diatoms and other AlgaB of New Haven Harbor and Adjacent 



Waters. 



By WM. a. terry, 



BKISTOL, CONN. 



In July and August, 1887, I spent several weeks in a thorough and system- 

 atic search for diatoms along the eastern shore of New Haven harbor, 

 extending my examination throughout Morris Cove, the channel and mouth 

 of the harbor, and beyond the light-house and breakwater several miles out 

 into Long Island Sound, and to other points both east and west, including 

 creeks and tide-pools of the salt marshes. The apparatus used in collecting- 

 consisted of a small scoop-net with a pocket of lawn muslin fixed at the end 

 of a long and light pole for use in the creeks and tide-pools, and a light 

 dredge, made of similar material, with about one hundred and fifty feet of 

 stout line, for use in deep water. The material procured by the use of this 

 apparatus was generally rich in 'living forms, and contained also the shells 

 of former generations, thus showing not only the varieties then in active life 

 but those of other seasons whose time had passed. I shall not attempt to 

 give a complete list of varieties found as I am unable to determine a large- 

 proportion of them, and experts to whom I have sent them do not agree. 

 Besides, a mere list of names would swell this paper beyond its proposed 

 limits ; but I will give a partial list of the more prominent and numerous 

 species. 



The tide-pools in the salt marshes back of Fort Hale were especially rich 

 in Pleiirosigma balticum and Naviciila cancellata^ and contain also nu- 

 merous P. angulatuni^ P. fasicola^ and other pleurosigmas, some of which 

 were so delicate as to be almost invisible in Canada balsam ; several varieties 

 of Navicula constricta^ N. elliptica^ N. lyra, large and small varieties of 

 Coscinodiscus, Actinoptychus, Amphora, Amphiprora, etc. In a previous 

 article in this periodical I mentioned finding P . paradoxa plentiful in these 

 marshes. At this time I failed to find it here. Looking in the locality named 

 by Miss Booth about the same time, near the New Haven Depot, I found 

 only a few and feeble !?pecimens, but found them abundant and vigorous in 

 the deep water at Morris Cove. 



In the moat around Fort Hale were found, in addition to many of those 

 above mentioned, varieties of Achuatithes^ JMelosii'a^ Cocconeis^ and many 

 others. P. balticufn was found also abundant in the salt marshes at 

 Fawson Park, ofi" Branford ; in the creeks and tide-pools at Milford, Conn. ; 

 and this season I found them in like quantity in the marshes of the lower 

 part of Boston harbor, and in the shallow water at Nantasket landing. 



P. angidatiim I found universely distributed in all parts of New Haven 

 harbor, and in all other places investigated on the Connecticut shore. It 

 was entirely wanting in the gatherings in Boston harbor. 



Morris Cove is a nearly semi-circular indentation in the eastern shore of 

 New Haven harbor, extending from Fort Hale to Light-House Point, a dis- 

 tance of about one and a half miles. It has a smooth, sandy beach of suf- 

 ficiently abrupt descent to admit of bathing at all hours, and at a few rods 

 distance from the low-water line there is a sand-bar thrown up by the waves. 

 On this the water is so shallow that the little steamer that sometimes runs 

 from New Haven cannot approach the pier at low tide, and has to land its 

 passengers in row-boats. 



In this cove I found the diatoms arranged in narrow belts or zones. First 

 at the low-water line were small Amphora^ Amphiprora^ NitzscJiia car- 

 vula^ N. sigmoidea ; several kinds oi Pleiirosigma^ some of which became 

 more plentiful in deeper water ; many kinds of small Coscii2odi'r?is and 



