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Show cf . 527, 528, 537, 538, 539. $ . 526, 529, 531, 532, 533, 534, 540. Central Tanegashima. 300' cf. 542. $ . 543, 544. Nishinoomote, Tanegashima. 150'. 3. M icromys g e ish a Thos. cf. 536. § . 535, 539, 541. Central Tanegashima. 300'. These specimens are intermediate, as should be the case, between the long-footed yakui and the ordinary geisha of Japan. Three of the specimens are measured as having the hind foot 19*5 mm. EXPLANATION OF PLATE IX. Mustela melampus bedfordi, p. 343. 4. A Revision of the Fishes of the Family G a la xiu lc e . By (J. Tate R egan, B .A ., F.Z.S. [Received October 26, 1905.] (Plates X .-X I I I .*) The Galaxiida? are a family of Teleostean Fishes which are placed by Boulenger in the Haplomi, a suborder defined by the abdominal ventral fins, the persistent pneumatic duct, and the absence of a mesocoracoid element in the pectoral arch. They may be thus defined :- Maxillary behind the prsemaxillary and toothless, but to a certain extent bordering the mouth. Parietals in contact, separating the frontals from the supraoccipital; orbitosphenoid, basisphenoid, and opisthotic wanting ; pro-otics not forming a roof for the eye-muscle canal, which is confluent with the cranial cavity; mesetlimoid small, unpaired. Ribs attached to autogenous parapopliyses; epipleurals and epineurals present. Posttemporal simple, attached to the epiotic; pectoral pterygoids normal, 4 in number. 5 to 11 branchiostegals; gill-membranes free from the isthmus ; pseudobranchia? present; four gills, a slit behind the fourth. Body naked. No adipose fin. Pectorals placed low; ventrals, if present, with 6 or 7 rays. Air-bladder present. Ova falling into the abdominal cavity before extrusion. The closely allied Haplochitonidye differ in the greater development of the prtemaxillaries, the presence of a roof for the eye-muscle canal, formed by the pro-otics, and in having an adipose fin. The Esocidse of the Northern Hemisphere resemble the Galax iidae and Haplochitonidse of the Southern in the primitive structure of the vertebral column, also in the shape of the cranium, the orbitosphenoid wanting and the opisthotic very small or absent. However, the presence of wrell-developed paired ethmoids and the separation of the parietals by the supraoccipital are cranial differences of considerable importance. 1905.] ON THE FISHES OF THE FAMILY GALAXIID^E. 363 * For explanation of the Plates, see p. 383. |