. British and Irish Salmonidæ. Catoprion, Hydrocyon, Cynopotamus, Xyplwrhynclius Agoniates,Xypliosfoina, Salanx, Oonostoma, Chauliodus, Argyropelecus, Sternopteryx,Odo7itostuma, Scopdus, Saurus, Saurida, Farionella, Aulopus, aiid (1838) classed the following genera among the British Salmonidfe:Salnio, Osmerus, Coregonus including Thymallus and doubtfully (1835) adopted the same classification, except that he placed Thymallusas a distinct genus. Dr. Giinther (1866) divided the family of SalmoijidiB asfollows :—Salnio, including salmon, trout, and char, Onch
. British and Irish Salmonidæ. Catoprion, Hydrocyon, Cynopotamus, Xyplwrhynclius Agoniates,Xypliosfoina, Salanx, Oonostoma, Chauliodus, Argyropelecus, Sternopteryx,Odo7itostuma, Scopdus, Saurus, Saurida, Farionella, Aulopus, aiid (1838) classed the following genera among the British Salmonidfe:Salnio, Osmerus, Coregonus including Thymallus and doubtfully (1835) adopted the same classification, except that he placed Thymallusas a distinct genus. Dr. Giinther (1866) divided the family of SalmoijidiB asfollows :—Salnio, including salmon, trout, and char, Onchorhyvchus, Brachymystax,Luciotruita, Pecoglossus, Osmerus or smelt, Thaleichthys, Hypomesus, Mallotus,Petropinna, Coregonus or guiniads, Thymallus or grayling, Argentina, Microstomaand Salanx. In the following pages I shall restrict my remarks to what may be termed the game fishes of this family found in the fresh waters of the British Isles,and which include the salmon, various forms of trout and char, and also SALMON PASS. 1 * SALMONID^ OF BRITAIlSr. Family—SALMONIDiE, MiiUer. Pseudobranchiae present. The margin of the upper jaw formed mesially bythe premaxillaries, and laterally by the maxillaries. Barbels absent. Twodorsal fins, the anterior containing rays: the posterior, which is the smaller,being adipose. Pyloric appendages, as a rule, present and usually scaled, head scaleless. Air bladder large, simple, and with a pneumaticduct. The ova pass into the cavity of the abdomen before being extruded. family is characterized, among bony or tdeostean fishes, by tho large sizeof its blood discs. Geological appearance.—No fcssils representing fresli-water forms Lave as yetbeen discovered; but the marine smelt, Osmerus, is found in the greensand of Iben-busen and the schists of Glaris and Licata. A species of Mallotits is also presentin the clay nodnles in Greenland, whose age has not been determined. Somesujiposed marine forms have likew
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Keywords: ., bookcentury1800, bookdecade1880, bookidbritishirish, bookyear1887
