D. G. Eaton. — Algo' from Eastport^ Maine. 345 



14. Ectocarpus brachiatus, Harvey. 



15. Ectocarpus littoralis, Lyngbye. 



16. Ectocarpus siliCUloSUS, Lyngbye. 

 IV. Ectocarpus tomentOSUS, Lyngbye. 



All these species of Ectocarpus, and possibly one or two others, 

 were collected on piles and rocks between tides, by Pi'of. Verrill and 

 Mr. Isham. Authors do not seem to be at all united as to the limits 

 of species in this genus, and with uncertain characters, and too often 

 with specimens not in fruit, the identification of species is most 

 doubtful. 



18. Polysiphonia urceolata, Greviiie. 



Common on rocks a few feet below low-water-mark. This is a 

 very variable ]>lant, passing from coarse and somewhat rigid forms, 

 by many gradations, to the delicate var. roseola of J. G. Agardh 

 (P. formosa, Harvey, Ner. Bor. Am.). 



19. Polysiphonia violacea, Greviiie. 



Collected early in August at Treat's Island by 3£r. Prudden. 



20. Polysiphonia fastigiata, Greviiie. 



Very abundant on Funis nodosus at Dog Island, etc. Grand 

 Menan, Dr. Palmer (with 24-26 tubes!). 



21. Corallina officinalis, Linn. 



Rock-pools on outer coast of Campobello Island. Grand Menan, 

 abundant, Prof. Verrill. This plant, which Dr. Harvey (Nereis Bor. 

 Am., II, p. 83) said had not been sent him by any of his American 

 correspondents, is abundant at Cape Ann, at Wood's Hole, and in 

 various parts of Long Island Sound. 



22. Liithothamnion polymorphum, Areschoug, in J. a Agardh's Sp. 



Alg., II, p. 524. 



Dredged in 18-20 fathoms, and encrusting rocks and shells up to 

 low-water-mark ; also seen in tide-pools. This is the common 

 " Nullipore " of the coast of JMaine, and occurs in a great many forms, 

 from a minute dot up to branching knobby masses several inches in 

 diameter. 



23.. Delesseria sinuosa, Lamouroux. 



Cast ashore on Campobello Island and Grand Menan, also dredged 

 abundantly in many places at ten to forty fiithoms, and off Campo- 

 bello Island in very deep water, (seventy-five fathoms. Prof. Verrill.) 



