426 bulletin: museum of comparative zoology. 



The material is so fragmentary that it adds nothing to my earher 

 discussion of this species. In the one superior nectophore in which the 

 somatocyst is still intact, the median dilation of this organ consists 

 of two short transverse horns, as I have already recorded it for speci- 

 mens from the Bay of Biscay (1911a), and from the northwestern 

 Pacific (1913). 



Agalmidae Brandt. 

 Agalma okeni Eschscholtz. 



Agalma okeni Eschscholtz, 1825, p. 744, pi. 5, fig. 17. 

 (For synonymy, see Bigelow, 1911b, p. 277). 



This species was taken at Stations 10,162, 10,163, 10,166, 10,171, 

 10,176, 10,180, 10,186, 10,188, 10,192, 10,194, 10,195, 10,196, 10,197, 

 10,198, 10,200, 10,202, 10,203, 10,208, 10,209, 10,211. The material 

 consists of about sixty colonies (or parts of colonies), and a large 

 number of detached nectophores and bracts. I have been able to 

 compare these specimens with series from various parts of the Pacific. 



Agalma okeni is perhaps the most easily recognized of all agalmids, 

 owing to its short, stiff stem, large tricornuate involucrate tentilla, 

 thick, prismatic bracts, and flat, firm nectophores. Indeed so diag- 

 nostic are the bracts and nectophores, that they are not likely to be 

 confused with any other agalmid, even when found detached in the 

 plankton. As ^. okeni has recently been described and figured in 

 detail by Haeckel (1888b, "CrystaUodes vitreus"), by Lens and Van 

 Riemsdijk (1908), and by me (1911b) no account is needed here, 

 further than to point out that the Bache collection contains the 

 largest example yet recorded, 115 mm. long after preservation, with 

 nineteen siphons and at least thirty-three nectophores. 



Stephanomia rubra (Vogt). 



Plate 8, fig. 5. 



Agalma rubra Vogt, 1852, p. 522; 1854, p. 62, taf. 7-11. 

 (For sjTionymy, see Bigelow, 1911b, p. 348). 



Station 10,166, 100-0 meters, one very fragmentary specimen, much 

 contracted. 



Station 10,206, 400-0 meters, one very fragmentary specimen, much 

 contracted. 



