422 bulletin: museum of comparative zoology. 



lateral ridge invariably arises some distance below the apex, usually at 

 about the level of the upper end of the nectosac. The dorsal ridge 

 is suppressed except for its basal end. 



The hydroecium of the inferior nectophore is closed by the union 

 of its two lateral flaps; there are two basoventral teeth. 



Among the many hundreds of specimens, from widely separated 

 localities, which I have examined, I have not found a single variant 

 from any of these characters, and the general outline of the superior 

 nectophore is so characteristic that it identifies D. appendiculata at a 

 glance. 



DiPHYEs FOWLERi Bigelow. 



DiphTjes fowleri Bigelow, 1911a, p. 346, pi. 28, fig. 5; 1911b, p. 255, pi. 8, fig. 4, 



pi. 9, fig. 5; 1913, p. 75. 

 Galeolaria truncata {partim) Moser, 1913b, p. 232. 



Stations 10,161, 10,163, 10,169, 10,172, 10,178, 10,187, 10,194, 

 10,207, 10,208, surface and intermediate hauls; about forty superior 

 nectophores, all more or less damaged. 



This species is separable from D. truncata only by the oval or globu- 

 lar form, and transverse location, of the somatocyst (1911b, 1913). 

 Moser (1913b, p. 232), has united it with D. truncata, but until the 

 evidence upon which she does so is available, D. foioleri is retained 

 here as a distinct species, no intermediates between the extremes of 

 somatocyst-form illustrated by D. fotcleri and D. truncata, having 

 been actually recorded. Should such prove to occur D. fowleri would 

 become a synonym of D. truncata. 



DiPHYOPSis DisPAR (Chamisso and Eysenhardt). 

 Diphyes dispar Chamisso & Eysenhardt, 1821, p. 365, pi. 33, fig. 4. 



To the synonymy given in my former paper (1911b, p. 257), add: — 



Doromasia picta Chun, 1888, p. 1154; 1892, p. 8, taf. 8, fig. 3-5, taf. 9, fig. 5-10, 



taf. 10, fig. 1-7. 

 Muggiaea bojani Schneider, 1898, p. 88. 

 Diphyopsis picta Mayer, 1900, p. 75. 



This well-known diphyid was taken at Stations 10,161, 10,162, 

 10,163, 10,166, 10,169, 10,171, 10,172, 10,176, 10,178, 10,180, 10,182, 

 10,184, 10,186, 10,187, 10,188, 10,192, 10,194, 10,195, 10,196, 10,197, 



