"(3) The somewhat coiled small intestine.
"(4) Certain characters of the brain, e.g., the large size of the cerebellum; the presence of the so-called lobi inferiores on the infundibulum, and of tori semi-circulares in the mid-brain.
"In spite of the undoubtedly important list of features to which we have just called attention, a list containing not less important characters, both embryological and adult, separating Lepidosteus from the Teleostei, can be drawn up:
"(1) The character of the truncus arteriosus.
"(2) The fact of the genital ducts joining the ureters.
"(3) The presence of vasa efferentia in the male carrying the semen from the testes to the kidney, and through the tubules of the latter into the kidney-duct.
"(4) The presence of a well-developed opercular gill.
"(5) The presence of a spiral valve; though this character may possibly break down with the extension of our knowledge.
"(6) The typical Ganoid characters of the thalamencephalon and the cerebral hemispheres.
"(7) The chiasma of the optic nerves.