_Cyclopterus lumpus_ is again with us. This is not a new form of the plague, but merely the technical term for the fish called the lump-sucker, better known on the East Coast as the paidle-cock and paidle-hen. Early this month they annually visit the Rock to deposit their ova. This the hen does in some convenient angle of the Rock, often so ill-judged as to expose the nest at low water. The ova is cemented into a compact mass, and adheres to the Rock by means of a gelatinous envelope surrounding each egg. This operation performed, the hen evidently considers her share of the contract as finished, as she immediately clears out to deep water, leaving the cock to mount guard over the nest. This duty he faithfully performs, as he is always to be seen with his nose close up to the ova, and never seems to leave it for a moment. I have frequently taken them away from the nest and placed them in a different part of the pool, but they invariably returned to their post. A stick or other substance intruded in the vicinity of the nursery is viciously snapped at. The ova seems to be considered a desirable dainty by other fishes, as the stomachs of the cod caught by us bear indisputable evidence of the cock’s inefficiency as guardian of his embryonic progeny. The hen is about eighteen inches long, and of a somewhat repulsive appearance. The cock is about half this size, and more attractive, being brilliantly coloured, combining various shades of blue, purple, and rich orange. A broad sucking disc between the pectoral fins enables the fish to moor itself to the rock and maintain an upright position. The dorsal ridge somewhat resembles a cock’s comb, and is probably the origin of the name paidle-cock. “Treasure-trove--Discovery of Specie on the Bell Rock.” There is a heading for a sensational article, recalling visions of that fictitious personage Ralph the Rover and his ill-gotten wealth. Well, many a yarn is built on a less slender foundation. Here are the facts:--The specie did not consist of Spanish dollars stacked in massive oaken coffers, but of a similar metal enclosed in a far more ingenious receptacle, simply a shilling in a live mussel. The shilling appeared as crisp as if newly struck, and bore the date 1839. It had turned a dark brown colour and had some filaments of the byssus or “beard” of the mussel adhering to it. The mussel was one of a quantity taken from underneath Granton Pier, and was being opened here for bait purposes when the “discovery” was made.