152 Bulletin American Museum of Natural History [Vol. XLVIII 



Hymenaster perissonotus Fisher 

 Hymenaster perissonotus Fisher, 1910, Ann. Mag. Nat. Hist., (8) V, p. 170. 

 Two specimens from Station 5691 are much larger than those of the 

 first collection, as R = about 60 mm. 



Zoroaster evermanni Fisher 

 Zoroaster evermanni Fisher, 1905, Bull. U. S. Bur. Fish., XXIV, p. 317. 

 There are three specimens from Station 5699 with R=135 to 152 

 mm. One has the big pedicellarise characteristic of Fisher's subspecies 

 mordax, but these are lacking in the other two. It is worth noting that 

 the locality is on the border line, both geographically and bathymetrically, 

 of the range of the subspecies. 



Zoroaster ophiurus Fisher 

 Zoroaster ophiurus Fisher, 1905, Bull. U. S. Bur. Fish., XXIV, p. 315. 

 There are three additional specimens of this species from Station 

 5689, with R= 125 to 140 mm. 



Myxoderma platyacanthum (H. L. Clark) 

 Zoroaster platyacanthus H. L. Clark, 1913, Bull. American Mus. Nat. Hist., 

 XXXII, p. 199. 



Myxoderma platyacanthum, Fisher, 1919, Ann. Mag. Nat. Hist., (9) III, p. 393. 



There are three additional specimens in the present collection, with 

 R = 60 to 70 mm. They bear the label "D 5695. Mar. 15, 1911." 

 This is clearly a mistake as the station number and date do not cor- 

 respond. It is evident that these specimens are from the type locality, 

 Station 5675, where collecting was done on March 15. 



Fisher's further investigations into the anatomy of the Zoroasteridse 

 have established the generic rank of Myxoderma and have shown that 

 the present species belongs in the genus. 



Myxoderma sacculatum (Fisher) 

 Zoroaster (Myxoderma) sacculatus Fisher, 1905, Bull. U. S. Bur. Fish., XXIV, 

 p. 316. 



Myxoderma sacculatum Fisher, 1919, Ann. Mag. Nat. Hist., (9) III, p. 392. 



This species is not recorded as in the first collection. There are five 

 specimens from Station 5694, having R=180 to 185 nun. 



Heliaster kubiniji Xantus 

 Heliaster kubiniji Xantus, 1860, Proc. Acad. Nat. Sci. Philadelphia, p. 568. 

 In the present series of very poorly preserved specimens, there is 

 great range in size, as R=13 to 100 mm. The number of rays ranges 



