152 BOUGAINVILLE^. 



Family BOUGAINVILLE^E Liitk. 



Bougainvillece LUTK. ; in Vidensk. Med., p. 29. 1849-50. 

 BougainvilUdce GEGENB. ; in Zeit. f. Wiss. Zool., p. 220. 1856. 

 Hippocrenidce McCii. Gyran. Charl. Harbor, p. 56. 

 Bougainvilluhe AGASS. Cont. Nat. Hist. U. S., IV. p. 344. 1862. 

 Eudendroidce AGASS. Cont. Nat. Hist. U. S., IV. pp. 282, 342. 1862. 



BOUGAINVILLIA LESS. 



Boiigainvittia LESS.; in Ann. ties Sc. Nat., V. 1836. 



Hippocrene MERT. ; (Preocc. Moll.) in Mem. Acad. St. Petersburg, p. 229. 1835. 



Hippocrene AGASS. ; in Meui. Ani. Acad., p. 250. 1849. 



Bougainvillia Mertensii AGASS. 



Bougainvillia Mertensii AGASS. Cont. Nat. Hist. U. S., IV. p. 344. 1862. 



Hippocrene Bougainvillei BR. (non Less.) ; in Mem. Acad. St. Petersburg, p. 293, PI. 20. 1838. 



If the Hydrarium, collected at San Francisco, is the Hydrarmm of 

 Bougainvillia Mertensii, there can be no doubt of the specific differ- 

 ence between it and Bougainvillia super cUiaris Agass. It grows quite 

 luxuriously, attaining a height of nearly two and a half inches ; the 

 stems are very stout, particularly the main branch, which near the 

 base is exceedingly robust ; the branches are at least three times as 

 stout as those of the Hyclrarium of our Bougainvillia, which is slen- 

 der, and always branches quite loosely. In the California species the 

 brandies succeed each other rapidly, and are crowded on the sides of 

 the main stem. This would seem to prove that this species, like the 

 Coryne rosaria, is the representative on the Pacific coast of its eastern 

 congener, and that neither the Coryne mirdbilis nor the Bouyain- 

 villia superciliaris are circumpolar species, like the Toxopneustes dro- 

 bachiensis. 



This species is undoubtedly the Hippocrene Bouyainmllei Br. which 

 Mertens found at Mathaei Island, in Behring's Strait, and which is 

 figured in the Memoirs of the Academy of St. Petersburg for 1838, 

 Vol. II. The ramifications of the tentacles surrounding the actinos- 

 tome are very numerous, and the eye-specks at the base of the mar- 

 ginal tentacles small. The spherosome has a slight bluish tinge ; the 

 chymiferous tubes, the tentacles surrounding the mouth, and the mar- 

 ginal tentacles, are straw r -colored ; the base of the tentacles is yellow- 

 ish-brown. This species is much larger than either Boiiyainvillia su- 

 2)erciliaris or B. madoinana ; it was quite common during the summer, 

 in the harbor of Port Townsend, at the northwest boundary, in the 



