188 MUGGIAEA KOCHII. 



it about equals the apex of the nectosac, as Cunningham shows it, and in one 

 example of 7 mm. it falls somewhat short of that level. 



Stem and appendages. In none of the examples were any of the appendages 

 sufficiently advanced to show the final shape of the bract; they consist simply 

 of siphon, tentacle, very young bract, and the bud for the future gonophore. 

 Cunningham who observed "detached eudoxomes " ('92, p. 215) has not described 

 them. VanhofTen's provisional identification of the Eudoxids recorded by 

 Johannsen and Levinsen under the name Eudoxia esckscholtzi as belonging to 

 this species rests only on the ground that "Die Eudoxien sind unbekannt, 

 werden aber jedenfalls der Eudoxia eschscholtzi Busch nahe stehen." (:06, 

 p. 14). 



Muggiaea kochii (Will) Chun. 

 Plate 12, Figs. 2-4. 



Diphyes kochii Will, '44, p. 77, taf. 2, fig. 22; Busch, '51, p. 46, taf. 4, figs. 3-5. 



Ersaea pyramidalis Will, '44, p. 81, taf. 2, fig. 17. ■ Eudo.kid. 



Muggiaea pyramidalis Busch, '51, p. 48, taf. 4, fig. 6. 



Eudoxia eschscholtzi Busch, '51, p. 33, taf. 4, figs. 7-10, taf. 5, figs. 1-9; Chun, '92, p. 90 (non Johannsen 



and Levinsen :03). Eudoxid. 

 Monophyes primordialis Chun, '82, p. 677, taf. 12, fig. 1. 

 Muggiaea kochii Chun, '82, p. 679, taf. 17, figs. 2; '88, p. 15; '92, p. 89 (partim); Haeckel, '88b, p. 137; 



Schneider, '98, p. 88 (partim); Bigelow, :11b, p. 340. 

 Cucubalus eschscholtzi Haeckel, '88b, p. 109. Eudoxid. 



Stations 4679, 4681, 4691; all 300 fathoms to surface. At each, 1 necto- 

 phore. All about 12 mm. long. 



The identification of these three nectophores, none of which were in verj^ 

 good condition, rests on an actual comparison between them and the Biscayan 

 specimens already mentioned. Apart from the absence of a posterior necto- 

 phore, or of reserve buds for such structures, the diagnostic features of M. 

 kochii are as follows: — There are five ridges, running undivided from apex to 

 base, but the lateral ones terminate a short distance above the basal margin. 

 This fact, easily demonstrable in specimens as relaxed as the present ones, is 

 often concealed in better preserved and more contracted examples, as was the 

 case in the Biscayan series (Bigelow :11b, p. .340). 



The somatocyst is cylindrical and reaches onl}^ from one third to one 

 half the length of the nectosac, instead of reaching or surpassing the apex of 

 the latter as in M. atlantica. The hydroecium, as already noted (:11b), lies 

 wholly below the opening of the nectosac, and its shortness together with 

 the form of the somatocyst is one of the most valuable field marks to separate 

 this species from M. atlantica. 



