76 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



Family ENGKAULID.^. 



II. LYCENGRAULIS GROSSIDENS (Cuvier). 

 SARDINA. 



Engrmdh grossidnif^ Cuvikr in Spix (Agassiz) Pise. Brasil., p. 50, pi. xxiv, fig. 1, 

 1829.— Perugia, Ann. Mas. Civ. Stor. Nat. Geneva, 2(1 ser., X (XXX), 

 1890-91, p. 654 (Montevideo). 



Lycengraulis ijrossidens, Berg, Anal. Mus. Nac. Buenos Aires, IV (2d ser., I), 

 1895, p. 21 (Mar. del Plata; Montevideo). 



Conoornino- this species Berg- states that it sometimes reaches the 

 markets of Bvienos Aires and Montevideo in considerable abundance. 



We have the bones of the lower part of the head, a part of the ver- 

 tebral column, and the stomach of an individual found in the stomach 

 of Acan tJustius ixitaclion'icus. 



The teeth sufficiently indicate the genus, but it is impossible to 

 determine the species with certainty. 



The stomach was distended with fragments of minute crustaceans. 



Family LEPTOCEPHALID.E. 



12. LEPTOCEPHALUS ORBIGNYANUS (Valenciennes). 



Conger oi-bignyanus Valenciennes in D'Orbigny, Voy. L'Amer. Merid., V, 1847; 



Poiss., p. 10; Atlas, pi. xii, fig. 1. 

 ? Conger midtidens Oastelnau, Anim. nouv. I'exped. L'Amer. du Sud, Poiss., 



1855, p. 84, pi. xLiv, fig. 1, "De Rio de Janeiro". 

 Conger mdgaris, Gunther, in part, Cat., VIII, 1870, p. 38 (South America). — Peru- 



(iiA, Ann. Mus. Civ. Stor. Nat. Geneva, 2d ser., X (XXX), 1890-91, p. 656 



(Montevideo). — Bekg, Anal. Mus. Nac. Buenos Aires, IV (2d ser., I), 1895, 



p. 23 (Mar del Plata; Montevideo). 

 Conger conger Linnaeus {= C. orhigmjanus, Valenciennes ?). — Gunther, Ann. 



Mag. Nat. Hist, 5th ser., 3, July, 1880, p. 13 (La Plata). 

 f Lejitocephcdusmultideiis, Jordan and Davis, Kept. U. S. Fish Comm., XVI, 1888 



(1892), p. 664 (coast of Brazil). 

 Leptocephalus conger, Jordan and Davis, Kept. U. S. Fish Comm., XVI, 1888 



(1892), p. 664. 



The most prominent character used b}" Gunther and l)y Jordan and 

 Davis to distinguish the species of conger eels is the position of the 

 origin of the dorsal iin with reference to the tip of the pectoral. 



Giinther'* definitely recognizes 4 species, Conger jnarginafuf^, C. 

 vulgaris^ C. multldens^ and C. macrops., of which 6'. vulgaris and C. 

 multidens are represented from South America. 



In a footnote Gunther says of Conger orhlgtiyanus^ that it is prob- 

 ably identical with one of the species described; that D'Orbigny rep- 

 resents the origin of the dorsal as being a short distance behind the 

 extremit}' of the pectoral tin, while this distance is increased to the 

 entire length of the latter hn in Doctor Kaup's description. 



«Cat., VIII, 1870. 



