To the sea only, belong also the acipenser,[464] the dorade,[465] the asellus,[466] the acharne,[467] the aphye,[468] the alopex,[469] the eel,[470] the araneus,[471] the boca,[472] the batia,[473] the bacchus,[474] the batrachus,[475] the belonæ,[476] known to us as “aculeati,”[477] the balanus,[478] the corvus,[479] the citharus, the least esteemed of all the turbots, the chalcis,[480] the cobio,[481] the callarias,[482] which would belong to the genus of the aselli[483] were it not smaller; the colias,[484] otherwise known as the fish of Parium[485] or of Sexita,[486] this last from a place of that name in Bætica its native region, the smallest, too, of the lacerti;[487] the colias of the Mæotis, the next smallest of the lacerti; the cybium,[488] (the name given, when cut into pieces, to the pelamis[489] which returns at the end of forty days from the Euxine to the Palus Mæotis); the cordyla[490]—which is also a small pelamis, so called at the time when it enters the Euxine from the Palus Mæotis—the cantharus,[491] the callionymus[492] or uranoscopus, the cinædus, the only[493] fish that is of a yellow colour; the cnide, known to us as the sea-nettle;[494] the different kinds of crabs,[495] the striated chemæ,[496] the smooth chemæ, the chemæ belonging to the genus of pelorides,[497] all differing in the variety of their colours and in the roundness of the shells; the chemæ glycymarides,[498] still larger than the pelorides; the coluthia or coryphia;[499] the various kinds of shellfish, among which we find the pearl oysters,[500] the cochleæ,[501] (belonging to which class are the pentadactyli,[502]) the helices,[503] by some known as actinophori, the spokes[504] on whose shells are used for musical purposes;[505] and, in addition to these, the round cochleæ, the shells of which are used in measuring oil, as also the sea-cucumber,[506] the cynopos,[507] the cammarus,[508] and the cynosdexia.[509]