ICHTHYOLOGY-MALACOPTERYGII.

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number of Cvprinidfc into one genus, Leuciscus, whichhave by Heckel been distributed into about 16 distinctgenera. It may well be difficult to determine a Fish ofthis division according to Valenciennes’ book. Besidesthese, there follow the genera Chondrostoma, Catla ( Gibelion ,Heck.), Catostomus, Sclerognathus ( Catostomus Cyprinus,Lesueur), which appears to be identical with Rhitidostomus,Heck., Exoglossum. It is impossible here to enter uponthe numerous new species.

Some new Cyprinidse of the genus Barbus have been figured by Smith,‘ Ill. South Africa, ’ 14, and arranged in subgenera. Heckel had already con-sidered them, Cheilobarbus capensis. 16J inch. D. 10; P. 16 ; V. 8; A. 7 ;C. 19. Ch. marequensis differs somewhat in form from the preceding.

Pseudobarbus Burchellii. 4 inch. The fins red at the base. D. 8 ; P. 12;Y. 6; A. 7; C. 19. Ps. paUidus. D. 7; P. 14; V. 6 ; A. 7; C. 17 .

Abrostomus umbratus. Iteddish-gray, with yellow spots. D. 10; P. 12;V. 10 ; A. 6 ; C. 21. A. capensis. D. 11; P. 16 ; Y. 9; A. 6; C. 18.

Labeo elegans, De Kay. Blueish above, head greenish, dorsal fin rounded offsuperiorly; 8 inch. D. 12; P.15; Y. 9 ; A. 8. New York . L. Bsopus(id.) Back raised, scales elongated, lateral line indistinct; 10 inch. D. 12;P. 16; V. 9; A. 7. New York , from the interior of the State.

Abramis versicolor, De Kay. Silvery, variegated with green, blue, andgold; 7 inch. D. 9 ; P. 14; Y. 9 ; A. 14. In the Connecticut and Hudson.

Catostomus oneida, De Kay. Back gibbous, two short spinous rays in thedorsal fin, head smooth, with numerous mucus-pores ; 12 inch. D. 2. 13 ;P. 15; Y. 9; A. 8. Lake Oneida. C. pallidas (id.) Sides pale, the two divi-sions of the swimming bladder connected by a wide opening; 10 inch. D. 13;P. 16 ; V. 8; A. 8. Near Peekskill .

Leudseus nitidus, De Kay. Body silvery-white, head with mucus-pores,tail deeply notched, not forked; 10 inch. D. 8; P. 16; V. 10; A. 9. Lake Champlain . L. chrgsopterus (id.) A large scale at the base of the abdo-minal fin; dorsal fin emarginate; 6 inch. D. 9 ; P.19; Y. 9 ; A. 10. NewYork Harbour. L. vittatus (id.) Olive-green, with a gold-coloured dorsalstripe, silvery beneath, with a dash of flesh-colour; 4 inch. D. 9; P. 15 ;V. 8 ; A. 8. Mohawk. L. pygmmus (id.) One or more ocellated spots onthe tail; 1 inch. D. 14; P. 16; V. 6; A. 13. In brooks near Tappan, Bock-land county.

Cyprinodontes.— Pcecilia decemmaculata, Jenyns. Ten black spots, in alongitudinal row, on each side. D. 8; A. 10; 1| inch. Maldonado.

Lebias lineata Jenyns. Seven black longitudinal lines on each side; 2 inch.