PISCES. 93 



Sp. Cyprinus barbus L., BLOCK Ickth. Tab. 18 ; the barbel, &c. 



NOTE. Add genera Systomus MACCLELL., Labeobarbiis RUEPP., Lucio- 

 barbus HECK., Schizothorax HECK., Scaphiodon HECK. 



Catostomus LESUEUR (and Khytidostomus HECK.). 



Labeo Cuv. Dorsal fin high, beginning in front of ventral fins. 

 No osseous ray. Mouth with thick fleshy lips, with two cirri, 

 sometimes with none. Pharyngeal teeth compressed, aggregate, 

 with crown obliquely truncate. 



Sp. Cyprinus niloticus FORSK., GMEL., Cuv. et VALENC. Poiss. xvi. PL 485, 

 GUEKIN Iconogr., Poiss. PI. 46, fig. 3 ; Cypr. Forskalii, Labeo Forslcalii 



KUEPPELL, Mus. Senckenb. u. Taf. in. fig. i, described by FORSKAL as a 



variety of the preceding, &c. 



Gyrene HECK., Dangila YALEXC. 

 Rohita YALENC. 

 Tylognathus HECK. 

 Discognathus HECK. 



Gobio Cuv. Dorsal and anal fins without osseous ray. Head flat 

 above. Mouth with two cirri. Pharyngeal teeth uncinate. 



Sp. Cyprinus gobio L., Gobio Jluviafilis Cuv., BLOCH Ickth. Tab. 8, fig. 2, 

 Cuv. et VAL. Poiss. xvi. PI. 481 ; the gudgeon, &c. 



Isocephalits HECK. (Cirrhina Cuv. YAL., with the addition of 

 some other species from the East Indies). 



Tinea Cuv. Dorsal and anal fins without osseous ray. Dorsal 

 fin inserted behind the commencement of ventral fins. Pharyn- 

 geal teeth compressed, clavate. Scales minute, covered with mucus. 

 Two small cirri. 



Sp. Cyprinus tinea L., BLOCH Ichth. Tab. 14, Skandinav. Fiskar, Tab. 52, 

 Cuv. R. Ani., ed. ill., Poiss. PI. 94, fig. i ; the tench, greenish, with 10 

 rays in the anal fin ; this fish seldom attains more than i' of length, occurs 

 nearly in the whole of Europe, but is rare in the north, and probably is not 

 met with in higher latitudes than 60 deg. N. 



Chondrostomus AGASS. Dorsal and anal fins without osseous ray. 

 Cirri none. Mouth inferior, with margin attenuated into a car- 

 tilaginous edge. Pharyngeal teeth masticatory, compressed, with 

 naiTOW oval crown. 



Sp. Cyprinus nasus, L., BLOCH Ichth. Tab. 3, &c. 



Add genera Gymnostomus, Chondrochylus, and Chondrorhynchus HECK. 



