68 DR. E. PERCEVAL WRIGHT. 



it, as well as in the North American ' Nereis/ a description 

 of the " tetrasporic fruit " will be found. 



3. On Plate ccxx, Figures 2, S, 4, 5 of volume iv of 

 Harvey's great work on the * Australian Algae/ illustrations 

 of the tetraspores and nemathecia will be found. This is 

 scarcely the place to criticise the former. 



4. Miss Gifford's'letter and specimens are in the Herbarium 

 of Trinity College, Dublin, Her letter is dated from Minehead, 

 Somerset, September 21 [1848]. I cannot say if it was 

 answered, though there is proof that she was in cor- 

 respondence at the time with Dr. Harvey, and that the 

 specimens she sent were at the time registered in the 

 Herbarium. The priority of Miss Gifford's discovery of the 

 tetraspores is fully acknowledged in page 109, of Part ii, of 

 the ' Nereis Boreali- Americana.' 



I would further remark that Dr. Montagne's letter to the 

 Rev. M. J. Berkeley is alluded to by Dr. Harvey in the work 

 last quoted ; also that J- G. Agardh's ' Species Genera et 

 Ordines Floridearum,^ W'hich forms the second volume of the 

 * Species Genera et Ordines Algarum,' was published not 

 only in parts but in fasciculi, and that vol. ii, pars, ii, 1, 

 pp. 1 to 504, containing the description of Stenogramma, 

 was published in 1851. (Pars, ii, 2, was published in 1852.) 

 As this fasciculus w^as probably printed early in 1851, it is 

 not likely that Agardh could have seen Dr. Montagne's letter 

 in the June number for that year of the ' Annals and Magazine 

 of Natural History.' 



The Trinity College Herbarium possesses specimens from 

 the following localities : 



Europe. — Strangford Lough ; in six to eight fathoms, 

 adhering to small stones in Castle Ward Bay, between 

 Portaferry and the Old Castle, Dr. Dickie, 1858. Cork 

 Harbour, Isaac Carroll, 1851. Minehead, Somerset, Miss 

 Gifford, 1847-48. Plymouth, Dr. Cocks, 1846; Rev. W. 

 Hore, 1847; Mr. Gilbert Sanders 1847. Lisbon, "In 

 Tago salsoj lecta mense September, 1842, F. Welwitsch." 

 Gibraltar, Mrs. Craige. Toulon, M. Giraudry. 



America. — Florida, Key West, Dr. Harvey. California, 

 San Francisco, Dr. Sinclair. 



Australasia. — New Zealand, Colenso. Tasmania, F. 

 Mueller ; W. H. Harvey. 



In many specimens, especially in luxuriant ones from New 

 Zealand, with fronds over a foot in length, the nemathecia 

 are distinctly to be seen on both surfaces of the frond ; but 

 the shape of the nemathecia varies much, and so do the 

 terminal edges of the laciniee, being sometimes broadly obtuse 



