STYLEPHORUS CHORDATUS, a genus of fishes belonging to the order of apodes. This very curious genus was discovered by Dr Shaw, who read a description of it before the Linnean Society in the year 1788. The eyes are fixed on cylindrical pillars which lie close together. The rostrum, or narrow part which is terminated by the mouth, is connected to the back part of the head by a flexible leathery duplicature, which permits it either to be extended in such a manner that the mouth points directly upwards, or to fall back so as to be received into a sort of case, formed by the upper part of the head. There are three pairs of branchiæ situate under the throat. The pectoral fins are small; the dorsal fin runs from the head to within about an inch and a half of the tail; the caudal fin is short, and is furnished with five remarkable spines. The body is extremely long, and compressed very much, and gradually diminishes as it approaches the tail, which terminates in a process or stung of an enormous length, and finishes in a very fine point. This stung, or caudal process, seems to be strengthened throughout its whole length, or at least as far as the eye can trace it, by a sort of double fibre or internal part. The stylephorus chordatus is a native of the West Indian Sea. It was taken between the islands of Cuba and Martinico, near a small cluster of little islands about nine leagues from shore, and was seen swimming near the surface. The whole length of this uncommon animal from the head to the extremity of the caudal process is about thirty-two inches, of which the process itself measures twenty-two.