A treatise on zoology . ad. The Mugiliformes are notknown for certain to occur below the Eocene strata. Tribe 1. With two separate dorsal fins, the anterior with spines. Except inthe Sphyraenidae, the pelvic bones are attached by ligament to thesymphysis of the cleithra, and ribs are borne by strong parapophyses. Sdb-Tribe a. Family Sphyraenidae. With free pelvic bones, andsessile anterior ribs. The large mouth is armed with formidable cycloid scales. Sphyraena, Bl., Sch. ; warm seas ; Eocene, Europe and N. America. Sub-Tribe B. Family Atherinidae. The pelvic bones are connectedby l
A treatise on zoology . ad. The Mugiliformes are notknown for certain to occur below the Eocene strata. Tribe 1. With two separate dorsal fins, the anterior with spines. Except inthe Sphyraenidae, the pelvic bones are attached by ligament to thesymphysis of the cleithra, and ribs are borne by strong parapophyses. Sdb-Tribe a. Family Sphyraenidae. With free pelvic bones, andsessile anterior ribs. The large mouth is armed with formidable cycloid scales. Sphyraena, Bl., Sch. ; warm seas ; Eocene, Europe and N. America. Sub-Tribe B. Family Atherinidae. The pelvic bones are connectedby ligament to the cleithra. The pectoral fins are inserted high nr>.With cycloid or ctenoid scales. 420 TELEOSTEI Atheriiiu, L. ; Atlantic, Mediterranean ; Eocene, Europe. Ehampho-gnathus, Ag.; Eocene, Europe. Chirostoma, Sw. ; Labidesthes, Cope ;Menidia, J. and G.—America. Sub-Tribe C. Closely related families distinguished by a strange modi-fication of the girdles : the pelvic bones are not attached to the cleithra,. FiG. i-n. Miigil cephahts, L. (From Jordan and Evermann.) but are firmly connected with, and supported by, the postclavicles, avery peculiar modification paralleled only in the Centriscidae. Family Mugilidae. The Mullets are distinguished by the possessionof a very perfect filtering apparatus on the gill-arches, formed by the gill-rakers ; and peculiarly modified pharyngeals. The oesophagus has long
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