D. (J. Eaton — Algm from Eastport^ Maine. 847 



33. ChondruS CrispUS, Lyngbye. 



A single specimen was given to Mr. Isham by a gentleman who 

 fomid it at Grand Manan. The plant is dwarfish, and with narrow 

 entangled divisions, but the section shows the proper cellular struc- 

 ture of this species. 



34. Halosaccion ramentacenm, J- G- Agardh. 



Plentiful on the rocks from half-tide down to the lowest tide-mark, 

 and assuming very different forms. Some specimens are like the 

 figure in Nereis Bor. Am., but most of the examples collected show a 

 tendency to produce sword-shnped, flattened fronds, either simple or 

 proliferously branched. The largest fronds are over a foot long, and 

 an inch wide in the middle, from which they taper to a very slender 

 base, and to a somewhat acute apex. When they remain simple, and 

 all the largest are simple, they gradually become much curved, and 

 the convex edge especially l)ecomes much inflated and irregularly 

 crested. For this form I propose the name of Var. gladiatum. Since 

 I find no difierence in the cellular structure, and since all kinds of in- 

 termediate forms occur, I dare not regard this form as a distinct 

 sj^ecies, though it is very unlike the forms hitherto known. 



35. Ceramium rubrum, Agardh. 



Found in a rock-pool on Campobello Island. Grand Manan, Prof. 

 Verrill and Dr. Palmer. 



36. Ceramium Hooperi, Harvey. 



Found by Prof. Verrill on the piles of a wharf in Eastport, and at 

 Grand Manan. Herring Cove, Mr. Prudden. In these specimens the 

 creeping surculi are not preserved, but the cells, of nearly equal diame 

 ter and length, are filled with a beautiful rosy-purple endochrome, the 

 nodes are coated with a definite band of rather large cellules, and 

 some of the specimens show a few of the root-like filaments which Dr. 

 Harvey saw on Mr. Hooper's original specimens from Penobscot Bay. 



37. Ptilota serrata, Kutzing. 



Cast up on the shores, and dredged abundantly, even found at 75 

 fathoms. Growing below low-water-mark at Dog Island, 3Ir. Prud- 

 den. This alga varies considerably in the coarseness or delicacy of 

 its parts, and one lai'ge but very delicate specimen from 50 fathoms 

 depth oiF Grand Manan has some of the opposite branches or rarauli 

 equally developed, so as to imitate P. phmiosa not a little. I have 

 seen no specimens fi-om this region of undoubted P. plumosa, though 

 as I write a true specimen of it is sent to me from Portland, collected 

 by Mrs. Roy. 



Trans. Connecticut Acad., Vol. II. 28 July, 1873. 



