248 DIPHYES APPENDICULATA. 



of Diphyes and Diphyopsis by the fact that the rather deep hydroecium is open 

 along its mid-ventral line, and from Chuniphyes by the smoothness of the 

 external surface, the rounded apex, and the absence of basal teeth. 



DIPHYES CuviER, 1817. 



Diphyes appendiculata Eschscholtz. 



Plate?, figs, 5-6; Plate 8, figs. 7-S; Plate 9, fig. G; Plate 10, fig. G; Plate 11, fig. 1. 



Diphyes appendiculata Eschscholtz, '29, p. 138, pi. 12, fig. 7; Huxley, '59, p. 34, pi. 1, fig. 2; Schneider, 



'98, p. 85; BiGELOw, :04, p. 265. : 11, b, p. 344. 

 DiphycsbipartitaCosTA, '36, p. 4, taf.4; Chun, '88, p. 11.58; '97b, p. 24; Mayer, :00, p. 74, pi. 34, fig. 114; 



RoMER, : 02, p. 175. 

 Diphyes elongata Hyndman, '41, p. 165, fig. 1-4. 



Diphyes acuminata Leuckart, '53, p. 61, taf. 3, fig. 11-20; GEfiENBAUR, '00, p. 375. 

 Diphyes siehoUii Kolliker, '53, p. 36, taf. 11, fig. 1-8; Gegenbaur, '54, p. 4.53; Kefferstein and 



Ehlers, '61, p. 15. 

 Diphyes gracilis Gegenbaur, '53, p. 309, taf. 16, fig. 5-7 (non D. gracilis Bedot, '96). 

 Eudoxia campanula Leuckart, '53, p. 43; Muller, '70-'71, taf. 11, fig. 1-4, taf. 13, fig. 10. Lens 



and Van Riemsdijk, :08, p. 48, pi. 7, fig. 62. Eudoxid. 

 Eudoxia messanensis Gegenbaur, '53, p. 285. Eddoxid. 

 Eudoxia alata McCrady', '57, p. 172, pi. 8, fig. 9, 10. Eudoxid. 

 Eudoxoides sagittata Huxley, '59, p. 59, pi. 4, fig. 1. Eudoxid. 

 Cucullus gegenbauri Haeckel, 'SSb, p. 110. Eudoxid. 

 Cucullus eloiigalus Haeckel, '88b, p. 110. Eudoxid. 

 Cucullus campanula Haeckel, '88b, p. 111. Eudoxid. 

 ?Diphyes pusilla, McCrady, '57, p. 174. 

 Non Ersaea appendiculata Agassiz and May'er, ; 02. 



The polygastric generation was taken at Stations 4571, 4574, 4575, 4641, 

 4644, 4646, 4650, 4661, 4676, 4679, 4681, 4683, 4699, 4701, 4704, 4705, 4707, 

 4710, 4713, 4715, 4716, 4717, 4720, 4724, 4725, 4734, 4740, 4742, and 4743, 

 in twelve surface hauls, and in seventeen hauls from 300 fathoms to the surface. 

 The material consists of three entire colonies (with the two nectophores still 

 connected), one hundred and forty-six loose anterior and four loose posterior 

 nectophores. The material was nearly evenly divided between the two classes 

 of hauls. The Eudoxid was taken at Stations 4580, 4583, 4588, 4598, 4613, 

 4617, 4644, 4650, 4657, 4665, 4679, 4696, 4707. This material consists of twelve 

 specimens from six surface, and twenty from seven 300 fathom hauls. 



Although this species has long been known and often figured, its most 

 diagnostic characters deserve attention here. The most characteristic external 

 feature is the conformation of the upper part of the anterior nectophore, the 

 importance of which seems to have been generally overlooked, although it allows 

 specimens of this species to be recognized at a glance. There are only three 

 ridges at the apex; two of which enclose the ventral facet, while a third, at first 

 lying in a dorsal position, tiu'ns to one side to become the right lateral ridge. 



