BIGELOW: MEDUSAE AND SIPHONOPHORAE . 425 



Doromasia pidoides Lens & Van Riemsdijk, 1908, p. 3, pi. 1, fig. 1. 



Diphtjcs bojani Bigelow, 1911b, p. 251, pi. 7, fig. 2, 3, pi. 8, fig. 6, pi. 9, fig. 1, 2, 



pi. 10, fig. 2, 3, pi. 11, fig. 7, pi. 12, fig. 1; 1917, p. 306; Moser, 1913a, 



p. 233; 1913b, p. 146. 



D. bojani was taken at Stations 10,161, 10,162, 10,163, 10,166, 

 10,169, 10,171, 10,176, 10,178, 10,180, 10,186, 10,187, 10,188, 10,192, 

 10,194, 10,197, 10,200, 10,203, 10,207, 10,208, 10,209, 10,210, 10,211, 

 10,212, both on the surface and in intermediate hauls with open nets, 

 at various depths down to 600 meters. The material consists of up- 

 wards of 200 superior nectophores, and a few inferior nectophores. 



It is now well established that the Atlantic D. steenstrupi Gegen- 

 baur, (D. serrata Chun) is identical with the Pacific D. bojani Moser, 

 1911, p. 431; 1913a, p. 146). The use of the name D. bojani, instead 

 of D. steenstrupi, for this combined species depends on the strong 

 probability that the Eudoxia bojajii of Eschscholtz is its eudoxid 

 (Moser, 1911, p. 431). But if this is the case, it is a Diphyopsis, 

 not a Diphyes as I formerly supposed, the eudoxid in question having 

 sterile swimming bells as well as gonophores. 



The general features of D. bojani are well known; the base of the 

 upper nectophore is figured here (Plate 8, fig. 3) in as much as the small 

 teeth on the dorsal wall of the hydroecium are, as noted by Gegen- 

 baur (1860), the most diagnostic difference between D. bojani and D. 

 dispar. These were overlooked by me in my account of the Eastern 

 Pacific series (1911b).' 



These teeth are situated on a vertical crest, rising from the dorsal 

 surface of the dorsal wall of the hydroecium, near its basal margin 

 (Plate 8, fig. 3, 4), well described by Gegenbaur as a "gezahnelte 

 senkrechte Kante" (1860, p. 40), and they, and the crest which bears 

 them, occur in all the specimens of D. bojani which I have examined, 

 Atlantic and Pacific, though they vary in size, and in number, from 

 2-5. 



Chuniphyes multidentata Lens and Van Riemsdijk. 



Chuniphyes midtidentata Lens & Van Riemsdijk, 1908, p. 13, pi. 1, fig. 9-11, 

 pi. 2, fig. 12-15; Bigelow, 1911a, p. 348; 1911b, p. 262, pi. 8, fig. 9, pi. 10, 

 fig. 7, pi. 12, fig. 6; 1913, p. 73. 



Station 10,172, 1800-0 meters, three superior, two inferior necto- 

 phores, all about 19 mm. long. 



' This was called to my attention by Dr. Moser. 



