424 bulletin: museitai of comparative zoology. 



somatocyst short, reaching only to mid-level of nectosac; dorsobasal 

 wall of hydroecium divided into two wings, the left hand one bearing 

 a secondary triangular flap or tooth near its inner margin. 



And I have found no \ariation from these characters in any of the 

 numerous specimens, Atlantic, and Pacific, which I have examined. 



The inferior nectophore resembles that of Diphyes append iculaf a; 

 but is easily distinguished from it by the fact that its hydroecium is 

 open from end to end (1911b, pi. 10, fig. 5). 



The location of this species in Diphyopsis rather than in Diphyes 

 rests on the statement by Lens and Van Riemsdijk (1908, p, 51), that 

 the oldest group of appendages in one of their specimens "showed 

 clearly a bud of a special gonocalyx." But if Moser (1913, p. 147) be 

 correct, this cannot have been the case, for she says that the eudoxid 

 without special nectophores, referred by Lens and Van Riemsdijk and 

 by me to Diphyes appendiculata, really belongs to D. viitra, which 

 would then be a Diphyes. My own studies throw no light on this 

 question, for the specimens of D. viitra which I have seen have only 

 young cormidia, or have lost all but the base of the stem. Hence 

 judgment must be suspended until the evidence on which she bases 

 her identification of the eudoxid in question is available. 



DiPHYOPSis BOJANi (Eschscholtz). 

 Plate 8, fig. 3, 4. 



Eudoxia bojani Eschscholtz, 1825, p. 743, taf. 5, fig. 15; 1829, p. 125, taf. 12, 



fig. 1 (eudoxid); Huxley, 1859, p. 59, pi. 3, fig. 7. 

 Diphyes steenstrupi Gegenbaur, 1860, p. 369, taf. 29, fig. 27-29; Chun, 1879b, 



p. 103; Lens & Van Riemsdijk, 1908, p. 44; Bigelow, 1911b, p. 347; 



Moser, 1911, p. 431. 

 Cuculv^ gracilis Haeckel, 1888b, p. 110 (eudoxid), 

 Ersaea dispar Haeckel, 1888b, p. 361. 

 Ersaea bojani Chun, 1888a, p. 1154; 1892, p. 108, fig. 7; Lens & Van Riemsdijk, 



1908, p. 6, fig. 1-6; Bigelow, 1911b, p. 264, pi. 11, fig. 7, 8 (eudoxid). 

 Diphyes serrata Chun, 1888, p. 1158; 1897b, p. 26; Lens & Van Riemsdijk, 



1908, p. 44; Bigelow, 1911b, p. 347. 

 Eudoxia serrata Chun, 1888, p. 1159; 1897b, p. 26 (eudoxid). 

 Doromasia bojani Chun, 1892, p. 108, 110, fig. 8. 

 Ersaea picta Chun, 1892, p. 98, fig. 6, pi. 11, fig. 8 (eudoxid). 

 Diphyes indica Lens & Van Riemsdijk, 1908, p. 45, pi. 7, fig. 55, 56. 

 Diphyes gegenbauri Lens & Van Riemsdijk, 1908, p. 46, pi. 7, fig. 57, pi. 8, 



fig. 58. 



