1854.] 199 



No barbels under the head. One pair of prenasal barbels. Velvet-like teeth 

 upon the intermaxillaries and lower jaw. Palate smooth. Eyes very small, 

 situated on the upper surface of head. Opercular apparatus prickly. Branchial 

 openings not continuous under the throat. Fins without any spiny rays. Skin 

 scaleless and smooth. 



6. Tkichomycteris maculattjs, Cuv. & Val. Hist. Nat, Poiss. xviii. 1846, 493. 

 Guich. in Gay's Hist, de Chile, Zool. II. 18-18, 311. 



Caught in the Rio Mapocho, near Santiago, Chili. 



clupeid^:. 



7. Alosa mtjsica, G. Body subfusiform, elongated, compressed and tapering 

 posteriorly. Origin of ventrals opposite the middle region of dorsal. Posterior 

 extremity of upper maxillary reaching the vertical of anterior rim of pupil. 

 Lower jaw longest. Back bluish ; sides silvery. A series of from nine to eleven 

 roundish spots along the sides. 



From Caldera Bay, Chili. 



8. Engraulis pulcheelus, G. Body subfusiform, slender and compressed. 

 Origin of ventrals situated in advance of anterior margin of dorsal. Vent im- 

 mediately opposite the hind margin of same fin. Scales higher than long. Dorsal 

 region purplish ; sides of head and body silvery. 



From Caldera Bay, Chili. 



CHARACINI. 



Genus CHEIRODON, Girard. 



Body compressed : abdomen not serrated. Adipose fin present. Teeth upon the 

 maxillary, the intermaxillary and the dentary; disposed in a single series along 

 both jaws, and dilated towards their edge, which exhibits generally five acute 

 points. No canine. Palate without teeth. Scales large. Gill openings large. 

 Branchiostegal rays three in number. Pharyngeal teeth velvet-like, very 

 minute. Dorsal fin situated between the ventrals and the anal. 



9. Cheirodon pisciculus, G. Snout short and rounded ; eyes rather large. 

 Maxillary teeth very small and few. Dorsal fin higher than long. Caudal 

 forked. Anal nearly as deep as long. Ventrals and pectorals slender. Scales 

 proportionally very large, higher than long. A silvery band along the middle 

 of the flanks, margined above with black. Fins unicolor, olivaceous. 



Inhabits the ponds in the vicinity of Santiago, Chili. 



MYXINOIDEA. 



10. Bdeleostoma polytrema, G. Fourteen respiratory apertures and gills on 

 either side. Twelve teeth on either side in the posterior, as -well as in the ante- 

 rior row. Eyes present. Color not preserved in the specimen before us. 



From the Bay of Valparaiso, Chili. 



Notice of some Fossil Bones discovered by Mr. Francis Am Lincle, in the banks 



of the Ohio River, Indiana. 



By Joseph Leidy, M.D. 



Through the kindness of my friend, Dr. J. G. Norwood, of New Harmony, 

 Indiana, I have had the opportunity of examining a collection of fossil bones,, 

 which were obtained by Mr. Francis A. Lincke, from the banks of the Ohio 

 River, near the mouth of Pigeon Creek, a short distance below Evansville, 

 Indiana. The bones are usually found in this locality sticking in the bank, 

 when the w r ater in the river is low. 



The specimens are thoroughly impregnated with oxide of iron, which also 

 erves as a cement to adhering pebbles, sand, fragments of Unios, and shells of 

 s he species of JSlelania canaliculata, Pahi.dina- 2>onderosa i etc. 



