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REPORT ON ZOOLOGY, MDCCCXLIII.

cinato-subconici), with longitudinal rows of hooks directedbackwards; they pass into seizing and strangling teeth(Fangzahne and Wiirgezahne).

The two former kinds appertain to the Cyprini with along intestine, the two latter to those with a short intestine.The 54 genera admitted by the author, and among whichare 28 of Heckeks, are next divided into 10 tribes, and allof them fully characterized; and in this summary all thespecies are enumerated, with the necessary citations andstatement of habitat. In respect to the generic charactersI am compelled to refer to the work itself, the study ofwhich is indispensable in the history of the Cyprinidse. Inmany genera the author is not acquainted with the formof the pharyngeal teeth from want of materials, and agreat number of species still require examination on thesame account, so that this family is not as yet completelyset in order. The new species from Syria are the following :

Barbus Lacerta, pectoralis, perniciosus , Grypus , Scincus, Bajanorum,, Kersin;Labeobarbus Kotschyi; iMciobarbus xanthopterus, esocinus, Scheich; Soa-phiodon Trutta , fratercula , Umbla, socialis, peregrinorum; Systomus luteus,ulbus ; Phoxinellus Zeregi; Cyprinion macrostomus, Kais, Cypris ; Biscogtia-thus variabilis, rufus, obtusus; Tylognathus nanus; Acanthobrama centi-squama, Marmid, Arrhada , cupida; Chondrochilus regius; Squalius Berak,lepidus, cephalopsis , spurius ; Aspius vorax ; Alburnus Sellal, microlepis, coeru-leus, hebes, mossulensis , capito, pallidas; Cobitis frenata, Panthera, insignis,Tigris , leapardus.

Although the 17th Volume of the Histoire Naturelle desPoissons, by Cuvier and Valenciennes, did not appear till1844, I have nevertheless thought it convenient to notice itin this place. Valenciennes includes in this volume thetrue edentate Cyprinidse. He, in general, follows an entirelyopposite principle to that of Heckel. Whilst the latterendeavours, by means of constant characters, to sever, todistinguish, which may perhaps occasionally lead ratherto an artificial than a natural system, Valenciennes on theother hand tries to unite, and is more inclined to bringallied forms into large groups. Thus he collects a great