296 ANTHOPHYSA ROSEA. 



Determination of the exact relationship uf the Pacific A. rosea (the type of 

 the genus) to the Atlantic A.formosa would be a valuable addition to our knowl- 

 edge of the geographic distribution of the Siphonophores. Unfortunately, how- 

 ever, I have no Atlantic specimens to compare with our excellent Pacific series, 

 and the fragmentary condition of most of the Atlantic specimens as yet described 

 makes* such a comparison necessary for a final decision of this question. The 

 "Albatross" specimens differ from A.formosa only in features which may readily 

 be explained as due to different stages in growth, to contraction, or to preserva- 

 tion. Should the two species be united rosea must be employed. 



Anthophysa rosea Brandt. 

 Plate 20, figs. 7-13; plate 21, figs. 1-5; plate 23, figs. 1-5. 



Anthophysa rosea Brandt, '35, p. 35. 



Anthophysa formosa Lens and Van Riemsdijk, ; 08, p. 88, pi. 16, fig. 123a, 123b. 



(If A. rosea and A.formosa prove sjaionymous the references given on p. 3491 should be considered). 



Station 4617 surface 



" 4619 



" 4644 



" 4659 



" 4671 

 4682 



" 4713 300 fathoms to surface 



" 4718 



" 4722 300 



" 4729 



" 4739 300 " " " 

 The most remarkable external feature of Anthophysa is the manner 

 in which the bracts are arranged on the corm. In this respect the specimens 

 agree very well with the account given by Haeckel ('88b) and especially with 

 Bedot's (:04) description. As observed by the former, the bracts are borne 

 on muscular lamellae, and these, as Bedot (:04, p. 6) has well expressed it, 

 "recouvrant en partie le pneumatophore ont une disposition qui trouble la 

 symetrie radiaire de cet organe. Leur pointe de depart est place excentriquement 

 a une certaine distance du pole apical. Partent de la en divergeant, elles arrivent 

 a envelopper la plus grande partie du pneumatophore, mais en laisant toujours 

 un espace libre. On pent done distinguer, sur le pneumatophore une aire mus- 

 culaire. . . .et une aire libre." As pointed out by Chun C97b, p. 62) it is these 



