228 PROCEEDINGS OF UNITED STATES ^JATIONAL MUSEUM. 



MANCALIAS.* 



Mancalias, Gill, Proc. U. S. Nat. Mus., v. 1, pp. 227, 228, 1878. 

 Type: M. uranoscopus = Ceratias urancscopus, Murray, Wyville Thompson, \oyage 



of the Challenger, v. 2, p. 67, with fig., 1878. (Am. ed.) 

 Atlantic Ocean (taken at a depth of 2,400 fathoms), between Canary and Cape Verde 



Islands. 



ONEIRODIN^. 



ONEIRODES. 



Oneirodes, Liitken, Overs, over d. K. Danske Vidensk. Selsk. Forhandl., 1871, pp. 56-74 

 (fr, pp. 9-18). 

 Type: 0. Eschrichtii Liitken. 

 Deep sea off Greenland. 



HIMANTOLOPHm^. 

 HIMANTOLOPHUS. 



Himantolophus, Reinhardt, K. Danske Vidensk. Selsk. Nat. og Math. Afh., 4. rsekke, 

 V. 7, p. 74, 1837 ; Lutken, 1878. 

 Tyf.e: H. Grodnlsmdicus Beinhardt. 

 Deep sea off Greenland (adults). 



CORYNOLOPHUS. 



Type : Corynolophus Reinhardtii == Himantolophus Reinbardtii Lutken. 

 Deep sea off Greenland (adult), and open sea between Africa and America (yonng)T 



^G^ONICHTHYIK^. 



JEG^ONICHTHYS. 



.^gseonichthys, T. E. Clarke, Trans. New Zealand Institute, v. 10, p. 245, 1878. 

 Type: 2E.. Appellii T. E. Clarke. 

 Deep sea off the island of New Zealand. 



MELAKOCETlNuE. 



MELANOCETUS. 



Melanocetus, Giinther, Yioo. Zool. Soc. London, 1864, p. :?0]. 

 Type : Melanocetus Johnsonii Gunther. 

 Deep sea off the island of Madeira. 



lu the words of Lutken, t '' the general form and the physiognomy es- 

 pecially are quite similar in the [known] genera; common to all is, also, 

 the absence of ventral fins, of the lateral line and its ramifications, of the 

 air bladder, of the pseudobranchise, and of the teeth of the lower pba 

 ryngeal and palatine bones;f the smallness of theeyesand of the pectoral 



* Mancalias, irom mancus, defective, with a quasi-diminntive termination, to corre- 

 spond with Ceratias, The single specimen obtained was only 90 millimetres long. 



t Vidensk. Selsk. Skr., 5. rsekke, Naturv. og Math. Afd., lite Bd. V, fr. tr., p. 343. 



t In i/eZanocefus, according to Glinther, " the vomer is armed with a transverse series 

 of single teeth, and extends across the whole width of the roof of the mouth; the 

 palatine and pteryg )id teeth are situated at some distance behind the vomer, and form 

 two bundles irregular in form "; but, according to Liitken (and since admitted by Giin- 

 ther), " the so-called palatine and pterygoid teeth " " belong in reality to the upper 

 pharyngeals." 



