EXPLANATION OF PLATE XXXVL 



Fig. I. — Urenchelys gcnuanus Hay. Page 434. Nearly complete fish. 



Type. Xy- No. 45150 (3654). a. /., origin of anal fin; 



cl., cleithrum; den., dentary; d. /., origin of dorsal fin; hy., 



hyoid; hym., hyomandibnlar ; i. op., interoperciilum ; mx., 



maxilla; c>/>., operculum; pal., palatine; ^. /., pectoral fin; 



^. op., preoperculum; /5^., pterygoid; (72*., quadrate; s. op., 



suboperculum. 

 Fig. 2. — Angiiillaviis qtiadripinnis Hay. Page 437. Anterior half of 



fish. T3'pe. Xj. No. 4512 (3796). 6r., branchiostegals; 



den., dentary; hy., hyoid; int., intestine; lat. sc, lateral 



sctites; mx., maxilla; op., operculum; p. f., pectoral fin; 



pt., pterygoid; qu., quadrate; v. /., ventral fins. 

 Fig. 3. — Ventral fin of the same specimen as Fig. 2. Page 437. 



Enlarged 7 diameters, v. /., ventral fins; v. f. s., ventral 



fin supports. 

 Fig. 4. — Pycnosterinx h'vispinosus Hay. Page 444. Complete fish. 



Type. X|. No. 4528 (3671). 





