7;; 



(kmlii brevis, erectus. F<>lia disticha, recurva, ©blonga, ol>li(iue 

 bidentata. Scapi penduli, circa 30 cm. longi ; racemi circa 15 cm. 

 longi, multiflori. Bracfme patentes, triangulari-ovatae, acuini- 

 natae, 2-3 mm. longae, basi concavae. Pvrficelli patentes vel 

 reflexi, graciles, 1-5 cm. longi. Florm giivi, brunneo-punctati. 

 Sepahi suhpatentia, unguiculata, 1 '2-1*5 cm. longa, limbus late 

 ellipticus, obtusus. Petala subpat* ntia, unguiculata, s< >alis 

 paullo minora. Labellum unguiculatum, trilohum, circa 6 mm. 

 longum; unque lineari angustissimo, lobis lateralibus patcntibug 

 falcato-ol)InnLris obtusis, lobo intermedio minuto, disco tuberculo 

 mill (i tc i instruct*), calcari e recto oblongo obtuso. Columt/a oblorigm, 

 circa *J mm. longa. 



Solomon Islands. Tulagi, C. M. Woodford. 



Described from an inflorescence and from a photograph 

 of the wliole plant. It is said to be common throughout the 

 Solomon Islands. 



XIL-THE APPEARANCE OF COLPOMENIA 



SINUOSA IN BRITAIN. 



A. D. Cottox. 



Colpomenia rinuosa, Derbes A Sol*, a Brown Alga of the 



family EncoeliaomMB, is a plant that is found throughout the 



warmer seas, being known both from the tropics and from temperate 

 regions. It occurs abundantly in the Mediterranean, but until 

 recently ban not been recorded in Europe farther north than 

 Cadiz. In 1906 two French observers drew attention to the 

 appearance of Colpomenia sinuosa on the S.W. coast of Brittany, 

 and during 1907 further notes were published on ite occurrence at 

 various localities in the neighbourhood of Cherbourg. Its pre** nee 

 may now be chronicled on the coasts of Britain, specimens having 

 been collected by Mr, E. M. Holmes at Torquay in September, 

 1907, and by the writer at Swanage in the previous April. The 

 appearance in these regions of an alga not previously known 

 nearer than the south of Spain is of considerable interest, 

 especially when it is not a question of isolated individuals, but of 

 the apparent establishment of the plant in several widely 

 separated localities. Colpomenia sinuosa is moreover of import- 

 ance from an economic standpoint, in that it may occasion 

 considerable damage to the oyster industry. 



Though frequent in the Mediterranean, and well known from 

 other parts of the world, a complete account of Colpomenia 

 rinuosa has never been published. For this reason it was not 

 without some hesitation that the British plants were referred to 

 that species, especially as they did not altogether agree with such 

 descriptions as had previously appeared. Specimens were there- 

 fore submitted to M. Bornet who has been kind enough to 

 examine them and to confirm the identification. The Torquay 

 specimens agree in a general way with the account furnished 



