The author obtained, in the early part of last September, at Brixham, in Devonshire, seven specimens of a species of Gurnard, which has been known for thirty years past to the fishermen there under the name of Finned Captains. This he ascertained to be the Trigla lucerna of Brunner. The species is known as an inhabitant of the Mediterranean, where it was first noticed by Rondeletius, but mistaken by him for the T. cuculus of Linnæus. Since then, Brunner noticed it at Marseilles, Risso at Nice, Leach at Malta, and Cuvier at Naples; but it had not been previously observed by any naturalist on the British coasts. The largest specimen obtained by the author is 10½ inches long. The back is light red, the pectoral fins dark blue, the sides marked by a silvery band from the gill-cover to the tail; the lateral line smooth, and formed by numerous semicircular plates, beautifully radiated at their free margin ; the scales thin, large, and entire; the second ray of the first dorsal fin very long, so as to reach, when folded down, beyond the sixth ray of the second dorsal fin. (See Plate.)