528 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



gular plate. Gill membranes widely separated, free. Pseudobran- 

 chiae present. Branchiostegals 12 to 16. Vertebrae about 70, of 

 which 28 caudal. Air bladder large. Scales cycloid, brilliant silvery 

 white. Head naked with few large scales forming occipital collar. 

 Paired fins each with long scaly axillary flap. Lateral line complete. 

 Dorsal moderate, before ventrals. No adipose fin. Anal very small, 

 near caudal, far behind vent. Caudal deeply forked. Pectorals 

 small, low. Ventrals small, rays 10 to 14. 



World-wide in warm tropical seas, the species usually referred to 

 Albulu, though the West Indian Dixonina differing in the last dorsal 

 and anal ray ending in an extended filament. The living Alhula is 

 also known from Eocene deposits and several other fossil genera have 

 been referred to the family. 



Genus ALBULA Scopoli 



Alhula Gronow, Zoophylacii, p. 102, 1763. (Species nonbinomial. "Lc type est 



le Butirin macrocephale (Clupea macrocephala Lac6p6de)"=jB.soa; vulpcs 



Linnaeus, designated by Desmarest, Encyclop. Hist. Nat., Chenu, vol. 19, 



p. 309, 1874.) {Albula Osbeck, Reise durch China, p. 309, 1762. Type, 



Alhula chinensis Osbeck.= Salanx Cuvier 1817. Inadmissible.) 

 Alhula Scopoli, Introd. Nat. Hist, p. 454, 1777 (on Gronow). (Type, Esox 



vulpes Linnaeus.) 

 Viilpis Catesby, Nat. Hist. Carolina, ed. 2, p. 1, 1771. (Type, Esox vulpcs 



Linnaeus, tautotypic. Inadmissible.) 

 Butyrinus LAcfipi^DB. Hist. Nat. Poiss., vol. 5, p. 45, 1S03. (Type, Butyrinus 



hananus Lac6pede, monotypic. ) 

 Butirinus Cxtvier. Regne animal, ed. 2, vol. 2, p. 329, 1829. (Type, Butyrinus 



bananus Lac^pede. ) 

 Butirinis BTuKEKer, Nat. Geneesk. Arcb. Nederl.-Indie, vol. 2, p. 509, 1845. 



(Type, Butyrinus bananus Lae6i)ede). 

 Buturi/nus Vam:nciennes, Hist. Nat. Poiss., vol. 19, p. 316, 1847. (Type, Buty- 



rinus bananus Lae^pede.) 

 Glossodonta Cuvier, Mem. Mus. Hist. Nat. Paris, vol. 1, p. 232, 1815. (Atypic.) 



(Type, Argentina glossodonta Forskfll, assumed tautonym.) 

 Olossodus (Cuvier) Aqassiz, Pise. Brasil. Spix, p. 48, 1829. (Type, Argentina 



glossodonta- ForskAl. ) 

 Esunculus KAtJP, Cat. Apodal Fish. British Mus., p. 143, 1856. (Type, 



Esunculus costei Kaup.) (Larva.) 

 Conorhynchos (not Bleeker 1858) Giix, Cat. Fish. East Coast North America, 



p. 55, 1861. (Type, Butyrinus vulpes Storer.) (Conorhynchos Motschoul- 



sky 1860 in Coleoptera precluded.) 

 Atopichthys Gakman, Mem. Mus. Comp. Zool., vol. 24, p. 326, 1899. (Type 



Atopichthys esunculus Garman, designated by Jordan, Genera of Fishes, 



pt. 4, p. 486, 1920.) 



Body little compressed. Head moderate. Snout piglike, overlaps 

 mouth. Eye large, with bony ridge above. Annular adipose eyelid 

 nearly covers eye. Mouth small, horizontal. Maxillary strong, 

 simple, with one supplemental bone. Gill rakers short tubercles. 

 Scales forming regular horizontal or longitudinal series parallel with 



