228 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



MANCALIAS.* 



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

 Type: M. uranoscopus = Ceratias uranoscopus, Mmray, Thompson, Voyage 



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

 Atlantic Ocean (taken at a depth of 2,400 fathoiW, oetween Canary and Cape Verde 



Island8 * 



ONEIRODES. 



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

 (fr. pp. 9-^)- 

 Type : 0. Eschr-utii Liitken. 

 Deep sea off Greenland. 



HIMANTOLOPHIK^E. 

 HIMANTOLOPHUS. 



Himantolophus, Bernhardt, K. Danske Vidensk. Selsk. Nat. og Math. Afh., 4. nekke, 

 v. 7, p. 74, 1837 ; Liitken, 1878. 

 Type: H. Grcenlandicus Heinhardt. 

 Deep sea off Greenland (adults). 



CORYNOLOPHUS. 



Type : Corynolophus Reinhardtii = Himantolophus Reinhardtii Liitken. 

 Deep sea off Greenland (adult), and open sea between Africa and America (young)? 



iEGJSONICHTHYINiE. 



iEG^EONICHTHYS. 



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

 Type : M. Appellii T. E. Clarke, 

 Deep sea off the island of Now Zealand. 



MELANOCETIN^. 



MELANOCETUS. 



Melanocetus, Giinther, Ytoc. Zool. Soc. London, 1864, p. HOI . 

 Type : Melanocetus Johnsonii Giinther. 

 Deep sea off the island of Madeira. 



In the words of Liitken, t u 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 tho 

 air bladder, of the pseudobrauchiai, and of the teeth of the lower pha- 

 ryngeal and palatine bones; f the small ness of the eyes and of the pectoral 



* Mancalias, from manens, defective, with a quasi-diminutive termination, to corre- 

 spond with Ceratias. The single specimen obtained was only 1)0 millimetres long. 



t Vidensk. Selsk. Skr., 5. raikke, Naturv. og Math. Afd., lite Bd. V, fr. tr., p. 'MS. 



X In Melanocetus, according to Giinther, " the vomer is armed with a transverse Mrtoi 

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

 palatine and pterygoid teeth are situated at some distance behind the vomer, and Corn 

 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 tho upper 

 pharyngeals." 



