i>24 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvin. 



LEPTOSYNANCEIA. 



L('j>tuif}in<iu(xiu AihK^KKK, Ki'V. Synaiiccui'dcs, 1S74, p. 17. 



A very distinct genus l)iis(Ml on the SymMicela astrohlejKi of Rich- 

 iirdson." 



TRACHICEPHALUS. 



Trachicephalm S\\Aii:iiiOi<s, Nat. His^t. Class. Fishes, etc., Jl, 1839, pj). 181,268. 

 Trichophasia Svf AiNsoN , Nat, Hist. Class. Fishes, etc., LI, 1839, p. 61. 

 Polycaulus Gunther, Cat. Fishes Brit. Mas., II, 1860. 

 Uranohlepue Gill, Cat. Fishes E. C. N. Am., 1861. 



Tlie name TracMcephalus was rejected and sul)stitutes proposed at 

 neavl}' the same time b}^ Giinther (hite in 1S60) and Gill (early in 1S61) 

 ])ecause of the similarity of Tracldcephahn^ and TrachycejfludHs. The 

 two, however, are etymological ly distinct, the one referring to the 

 rough head {rpaxi'z^ rough) and the other to the similarity of the head 

 to that of a TracMnus, Swainson expressl}' declaring that ''^Traddcepha- 

 his " has the ' ' shape and general aspect of Trachmu,^.''' In other terms, 

 the two names are as distinct as Jfacrocephalus and Microcej)halus., 

 which have opposite meanings. Traehicephahis is therefore retained. 



STJiiF'AiMii^Y iiNri]vriciisr.g£;. 



Pe/onH.r Gill, Mem. Nat. Acad. .Sci., VI, 1896, p. 135. 



Pe/orma? Jordan and Starks, Proe. U. S. Nat. Mus., XXVII, 1904, j). 93. 



SIMOPIAS. 



Les Synancees {Sijnanccia) §, Cuvier, Kegne Animal, II, 1817, p. 286. 

 Les Pelorft, Cuvier, Regne Animal, 11, 1829, p. 168 (not " Pelor, Bonelli Mem. Acad. 

 Tur., 1813"). 



The name Prior can not l)e I'etained for this genus inasmuch as it had 

 been appropriated, in 1818 by Bonelli, for a genus of caraboid beetles; 

 this genus, though long regarded as a synonym of Zahnis^ has been 

 revived by Ganglbaur as a subgenus under Zcihrua. 



The name here proposed as a substitute is a compound of the Greek 

 ffiixoz, snub-nose, o^, eye, with the suffix — ioc5\ allusion is made to the 

 elevated supraorl)ital ridge and snout — the snubnosed high- orbited fish. 



INIMICUS. 



Inimicus Jordan and Starks, Proc. U. S. Nat. Mus., XXVII, 1904, pp. 93, 158. 

 Pelor sp. AUCT. 



This group, established at the expense of Pelor for those species 

 with the upper pectoral rays not prolonged, as in the typical species, 

 may bo regarded as a mere subgeiuis of the old Pdor^ and in that case 

 should l)e considered as the generic name, while Siinopias would fol- 

 low as a subgeneric designation for Pelor filavientosus. 



« Zoology of the Voyage of the Sulphur, p. 69, pi. xxxix. 



