1728 Bulletin 4.7, United States National Museum, 



2143. LAGOCEPHALUS LJEVIGATUS (Linnseus). 

 (SMOOTH PUFFER.) 



Head 3; depth 4. 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, 

 suhequal, 3-rooted spines, well separated, no smaller ones intermixed ; back 

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

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

 height of dorsal If in head; caudal fin lunate, the longest ray 14- in head. 

 Olive green above, sides and below lustrous silvery white; no distinct 

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

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



Ostracion cathetoplateo oblongus, ARTEDI, Genera Pise., genus 58, species 13, 1738; after 



Orbis lagocephalus, GREW, etc. 

 Tetrodon Icevigatus, LINNAEUS, Syst. Nat., Ed. xn, 411, 1766, Charleston, South Carolina 



(Coll. Dr. Garden) ; GUNTHER, Cat., vm, 274, 1870. 



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

 Tetrodon mathematicus, 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 Linnaeus. 



Tetrodon lineolatus, POEY, Synopsis, 432, 1868, Cuba ; young. 

 Lagocephalus Icevigatus, JORDAN & GILBERT, Synopsis, 860, 1883; JORDAN & EDWARDS 



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



2144. LAGOCEPHALUS PACHYCEPHALTJS (Ranzani). 

 ( JUG-FISH.) 



Head 2f ; depth 3 ; eye 3|. 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 f 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 about 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, 1| 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 spines 

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

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

 cephalus Icevigatus; 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 lateral line 

 extending from the posterior outer corner. Lateral line extending directly 



