1728 Bulletin ^y, United States National Museum. 



2143, lAGOCEPHALUS LEYIGATUS (Linu.xus). 



(Smooth Tuffee.) 



Head Sir; depth U. D. 14; A. 12. Eye large, silvery, 2 in snout. Body 

 elongate, tail slender, a fold of skin on its lower edge on each side. Inter- 

 orbital space flat, shorter than snout, 1^ in eye. Belly covered with large, 

 sube(inal, 3-rooted spines, well separated, no smaller ones intermixed ; hack 

 and sides smooth. Gill opening midway between snout and front of dorsal. 

 Dorsal ;ind anal fins large and falcate, the last rays rapidly shortened; 

 height of dorsal If in head; caudal fin lunate, the longest ray li in head. 

 Olive green above, sides and below lusti-ous silvery white; no distinct 

 markings. Length 2 feet. Cape Cod to Brazil; common southward ; rather 

 rare north of Cape Hatteras. (Uevigatus, smoothed.) 



Oitracion cathetoplateo ohlongus, Artbdi, Genera Pise, genus 58, species 13, 1738; after 



Orhis lagocephalus, Grew, etc. 

 Tetrodon Icevigatus, Linnaeus, Syst. Nat., Ed. xii, 411, 1766, Charleston, South Carolina 



(Coll. Dr. Garden) ; Gunther, Cat., vni, 274, 1870. 

 Tetrodon curvus, Mitchill, Trans. Lit. and Philos. Soc, 1, 1815, 474, New York ; young. 

 Tetrodon onathematicus, Mitchill, Trans. Lit. and Philos. Soc, i, 1815, 474, New York. 

 Holacanthus melanothus, Gronow, Syst. Nat., Ed. Gray, 24, 1854, Carolina ; based on Tetra- 



odon Icevigatus of Linnreus. 

 Tetrodon lineolatui, Poey, Synopsis, 432, 1868, Cuba ; young. 

 Lagocephalus Icevigatus, Jordan & Gilbert, Synopsis, 860, 1883; Jordan & Edwards. 



Proc. U. S. Nat. Mus. 1886, 232. 



2144. LAGOCEPHALUS PACHYCEPHAtUS (Ranzani). 

 (Jug-fish.) 



Head 2^; depth 31; eyeSf. D. 14; A. 13; P. 17. Body heavy, tapering 

 from middle of head backward; snout blunt; length of caudal peduncle 

 equal to head in front of middle of pupil. Vertical diameter of eye * of 

 horizontal diameter. Interorbital space slightly concave, 2 in distance 

 from end of snout to middle of pupil ; distance between eyes equal to 

 snout. Gill opening vertical, broader than base of pectoral. Nuchal cross 

 line of mucous pores halfway between snout and origin of dorsal, and ^ 

 the distance to base of caudal. Dorsal and anal alike and opposite, both 

 somewhat falcate, the last ray altout 4| in longest, which is 1§ in head; 

 pectoral very broad, the margin oblique, slightly sinuous, lowest ray f 

 longest, which is as long as snout, 2 in head, the fifth ray from bottom 

 shortest. Upper and lower rays of caudal slightly produced, middle rays 

 even, upper lobe larger, as long as caudal peduncle, 11 in head; folds on 

 lower part of side of tail extending forward and meeting on chin, a very 

 slight fold on each side of tail above. Small, embedded, 3-rooted sjiines 

 on the belly between tlie lateral ridges, not extending on to chin nor to 

 vent, skin otherwise perfectly smooth. Lines of mucous pores as in Lago- 

 cephalus la'rigatiis; 4 short lines inclosing a quadrangular area behind the 

 eye, from the .anterior corners of which extends a line surrounding the eye, 

 the posterior inner corners connected by the nuchal line, the Literal line 

 extending from the posterior outer corner. Lateral line extending directly 



