ICHTHYOLOGY OF VENEZUELA — SCHULTZ 



157 



one specimen counted numbered 20, and the vertical scale rows above 

 lateral line numbered 51 in two specimens with 6 scales from base of 

 first soft dorsal ray to lateral line and 8 from the lateral line to the 

 anal origin. 



Genus BAIRDIELLA Gill 



Bairdiella Gill, Proc. Acad. Nat. Sci. Philadelphia, 1861, p. 33. (Genotype, 

 Bodianus argyroleucus Mitch.i\\ = Dipterodon chrysurus Laceplde.) (Ref. 

 copied.) 



BAIHDIELLA RONCHUS (Cuvier and Valenciennes) 



Corvina ronchus Cuviek and Valenciennes, Histoire naturelle des poissons, 

 vol. 5, p. 107, 1830 (Surinam; San Domingo; [?] Maracaibo). 



Bairdiella ronchus Eigenmann, Mem. Carnegie Mus., vol. 5, p. 72, 1912 (Mara- 

 caibo). 



U.S.N.M. No. 121746, 4 specimens, 61.5 to 102 mm., from mouth of Cafio de 

 Sagua, 25 km. north of Sinamica, March 12, 1942. 



The following counts were made: Dorsal rays X-I, 23 in one speci- 

 men, X-I, 24 in two, and X-I, 25 in one; anal rays II, 8 in 4 specimens; 

 pectoral rays 17 in one count; gill rakers on first gill arch 10+1 + 16 

 in one, 9 + 1 + 15 in three specimens; scale rows in one count 55. 



Figure 19. — Diagrammatic sketches of the tip of the snout and of the anterior part of the 

 underside of the lower jaw of three species of sciaenid fishes: a, Snout tip of Bairdiella 

 chrysura (Lacepede); b, lower jaw of B. chrysura; c, snout tip of Siellifer rastrifer (Jordan); 

 d, lower jaw of S. rastrifer; e, snout tip of Ophioscion iypicus Gill (type U.S.N.M. No. 

 22861); /, lower jaw of 0. typicus. Sketches by author. 



Genus PACHYURUS Agassiz 



Pachyurus Agassiz, in Spix and Agassiz, Selecta genera et species piscium Brasi- 

 liam, p. 128, 1831. (Genotype, Pachyurus sqtiamipinnis Agassiz.) 



PACHYURUS SCHOMBURGKH Gtinther 



Pachyurus schomburgkii Gunther, Catalogue of the fishes in the British Museum 

 vol. 2, p. 282, 1860 fRio Capim, Pard; Caripe, Pard, Brazil). 



