Fishes . FiQ. 665—Deep-sea Angler, Ceralias holbolli Kroyer. Fig. 666—Cauhphryne jordani Goode & Bean. Gulf Stream. Family Ceratiidce. second cephalic spine, sometimes a spine on the back of thetrunk, is preserved. The first cephalic spine always retainsthe original fionction of a lure for other marine creatures, butto render it more effective a special luminous organ is sometimes 752 Order Pediculati: The Anglers developed in connection with the filaments with which its ex-tremity is provided {Ceratias bis^inosHS, Oneirodes eschrichtii).So far as known at present these complicated

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Fishes . FiQ. 665—Deep-sea Angler, Ceralias holbolli Kroyer. Fig. 666—Cauhphryne jordani Goode & Bean. Gulf Stream. Family Ceratiidce. second cephalic spine, sometimes a spine on the back of thetrunk, is preserved. The first cephalic spine always retainsthe original fionction of a lure for other marine creatures, butto render it more effective a special luminous organ is sometimes 752 Order Pediculati: The Anglers developed in connection with the filaments with which its ex-tremity is provided {Ceratias bis^inosHS, Oneirodes eschrichtii).So far as known at present these complicated tentacles attainto the highest degree of development in Himantolophus andALgcBonichthys. In other species very peculiar dermal appen-dages are developed, either accompanying the spine on the backor replacing it. They may be paired or form a group of three,are pear-shaped, covered with common skin, and perforated atthe top, a delicate tentacle sometimes issuing from the the fifteen or twenty species of Ceratiidce described, none

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