33 (1023) 
Catostomus Hudsonius Le Sueur: Journ. of the Acad. of nat. 
scienc. of Philad. Vol. I. p. 107. = 
N, teres Il. c. p. 108. > 
5 oblongus 1. c. = 
n sucetta Il. c. p. 109. » 
» Forsterianus Richards. Fauna bor. americ.\ £ 
p. 116. > 
= Sueuri Il. c. p. 118. 
Rhytidostomus HECK. 
Dentes pectiniformes 60—69. Pinna dorsalis basi 
elongata, radio tertio vel quarto longissimo. In reliquis cum 
genere Catostomo congruit. 
* Cyprinus Catostomus Forster: Phil. Transact. 
Vol. 63. America 
Catostomus elongatus Le Sueur: Journ. of the sept. 
Acad. of Phil. Vol. I. p. 103. cum tab. 
Exoglossum RAFIN. 
Dentes? — Character generis Catostomi, a quo dif- 
fert processu carneo ad symphysin maxillae inferioris, 
uti in genere Labeobarbo. 
Exoglossum Lesuerianum Rafin. Journ. of the 
Acad. of Phil. Vol. I. p. +20. PEN 
” macroplerum l. c. p. 420. pl. 17. fig. 3. nt 
r2: annulatum 1. e. p. 421. pl. 17. fig. +.\ a 
n nigrescens 1. c. p. 422. 
TRIBUS VW. 
Os inferum, molle, in aciem attenuatum, vel labiis suc- 
ui aptis tectum, vel tanlum mento in plicam ad sugendum 
extenso; eirrhi guatuor, duo aut nulli; praeoperculum 
ante occiput, rarius sub occipite; apertura branchialis 
brevis. Pinna dorsalis drevis, rarius elongata; analis 
brevior, utraque radio osseo nullo. Ossa pharyngea 
brevia, dentibus masticatorüs aggregatis munila. 
Da 
A: 3 1%9—7 
Habitus Cyprini nilotici Geoffr. 
19. Labeo Cur. 
20. Cyrene Heck. 
21. Rohita Valene. 
