The calamaries or squids of our British Seas seize their prey in the same manner as _Sepia_, and the description of one will suffice for both. But there exist two groups of them, which are armed with curved and sharp-pointed hooks or claws, either in addition to, or instead of suckers. In the one group (_Onychoteuthis_), the hooks are restricted to the extremities of the pair of tentacles, in the other (_Enoploteuthis_), both the tentacles and the shorter arms have hooks. Professor Owen, in his description of these hook-armed calamaries in the _Cyclopaedia of Anatomy_, notices also another structure which adds greatly to their prehensile power (Fig. 4.). "At the extremity of the long tentacles a cluster of small, simple, unarmed suckers may be observed at the base of the expanded part. When these latter suckers are applied to one another the tentacles are securely locked together at that part, and the united strength of both the elongated peduncles can be applied to drag towards the mouth any resisting object which has been grappled by the terminal hooks. There is no mechanical contrivance which surpasses this structure; art has remotely imitated it in the fabrication of the obstetrical forceps, in which either blade can be used separately, or, by the inter-locking of a temporary blade, be made to act in combination." The cephalopods obtain and eat their food very much like the rapacious birds. They are the falcons of the sea. Some of them, like _Onychoteuthis_, strike their prey with talons and suckers also, others lay hold of it with suckers alone; but they all tear the flesh with their beaks, and swallow and digest their food in the same manner as the hawk or vulture. [Illustration: FIG. 4.--HOOKED TENTACLES OF _Onychoteuthis_.]