490 PROCEEDINGS OF THE NATIONAL MUSEUM vol. S6 



The marked age variations and sexual dimorpliism in the teeth of 

 Nautopaediuin porosissimum- largely explain the discrepancies in 

 published descriptions. 



NAUTOPAEDIUM POROSISSIMUM (Valenciennes) 



FiGUBE 57, a 



Batrachus porosissimus * Valenciennes, in Cuvler aud Valovicieinies, 1837, pp. 

 501-506 (original description; pre-Liunaean synonymy). — Jcnyns, 1842, pp. 

 99-100 (Bahia Blanca). 



Porichthys porosissimus *Gikabd, 1855a, p. 141 (new combination). — *GCn- 

 THER, 1861, pp. 17(>-177 (manjaritatus and notatns as synonyms, descrip- 

 tion).— *Kner, 1865, pp. 190-191, pi. 8, figs. 1, la (description; Rio dc Jane- 

 iro). — Jordan and Gilbekt, 1882b, p. 291 (compariso!i) ; 18S3a, pp. 751-752 

 (description; in part).— * Jordan, 1884a, p. 291; 1884b, p. 41; 1995b, p. 116 

 (teeth, range; plectrodon as synonym). — *Me:ek and IIatx, 1885, pp. 56-57 

 (teeth, synonymy). — Jordan and Swain, 1885, p. 545 (Pensacola, Fla.). — Jon- 

 dan, 1880. p. 229 (eaten by red snappers, Snapper Banks. Fla.). — Perugia. 

 1891, p. 620 (Montevideo). — Berg, 1895. pp. 69-70 (synonymy: in part; South 

 American records).— Rekd, 1897, p. 061 (Chile by error, fulc I>(-lfin, 19(M, 

 p. 89). — * Jordan and Evermann, 1898, p. 2.S19 (description, synonymy) ; 

 1900, p. 3301, pi. 335, fig. 811.— Jordan. 19)5, vol. 2, p. 526, fig. 481.— Rejoan, 

 1914. p. 23 (off Cape Frio. Brazil).— Riukiro, 1915, pp. 1-4 (description; Rio 

 de Janeiro). — Devincenzi. 1924, p. 258 (diagnosis; Unignay). — *Meek and 

 HILCEBR.AND, 1928, pp. 922-923 (description, synonymy, records). — Bredeh, 

 1929, p. 266 (diagnosis, range). (T.ype locality: "De Surinam . . . Cay- 

 enne . . . Rio Janeiro . . . et de Sainte-Catherine, du Bresil" ; commonly 

 given as and hereby restricted to Surinam.) 



Porichthys plectrodon Goode and Bran, 1882, p. 236 {vomai nudum; Gulf of 

 Mexico). — *Jordan and Gilbert, 1882b, p. 291 (original description) ; 1883a. 

 p. 958 (diagnosis; South Carolina to Texas) ; 1883b, pp. 616, 620 (Charles- 

 ton, S. C). (Type locality: Galveston, Tex.) 



The anal rays in N. porosissimum have been variously counted by 

 different authors. In 24 specimens we count the dorsal and anal rays 

 as indicated in table 4. 



The following collections of Nautopaedinm porosismim'm- in the 

 National Museum have been examined: U.S.N.M. no. 30894, Galves- 

 ton, Tex. (types of Porichthys plectrodoii) ; 32801, Pensacola, Fla. ; 

 39^5 and 39376, lat. 28°50' N., long. 83°00' W., northwest end, St. 

 Martins Reef, Fla. ; 39877, off Cape Sable, Fla. ; 44667 and 45995, from 

 10°37'40" N., 61°42'40" W.; 45751 and 45996, 33°20' N., 77^05' W., 

 or 33°18'30" N., 77°07'00" W.: 47638, Alacran Shoals; 73040, off 

 Northwest Channel, Fla., 24°40'45" N., 81°53'40" W.: 73041, Hawk 

 Channel, Fla.; 73042, Pigeon Key Lake, Fhi.; 73043, Pepperfish Key, 

 Fla.; 73044, 29°48'10'' N., 83°55'i5" W.; 73045, Deadmans Bay, Fhi'.; 

 73046, off Key West, inside reef, Fla.; 73047, North Key, Fla.; 73048, 

 Key West, Fla.; 73049, Deadmans Bay, Fla.: 73050, Pepperfish Kev, 

 Fla., 29°33'05" N., 83°23'03" W.; 83164 and 83168, from Rio de 



