752 Order Pediculati: The Anglers 
developed in connection with the filaments with which its ex- 
tremity is provided (Ceratias bispinosus, Onetrodes eschrichtit). 
So far as known at present these complicated tentacles attain 
to the highest degree of development in Himantolophus and 
AZge@onichthys. In other species very peculiar dermal appen- 
dages are developed, either accompanying the spine on the back 
or replacing it. They may be paired or form a group of three, 
are pear-shaped, covered with common skin, and perforated at 
the top, a delicate tentacle sometimes issuing from the foramen,”’ 
Of the fifteen or twenty species of Ceratitde described, none 
aa 
Fic. 667—Sargassum-fish, Plerophryne tumida (Osbeck), Florida. 
Family Antennariide. 
are common and all are rare catches of the deep-sea dredge. 
Caulophryne jordant is remarkable for its large fins and the 
luminous filaments, Linophryne lucifer for its large head, and 
Corynolophus reinhardti for its luminous fishing-bulb. 
The Frogfishes: Antennariide.—The frogfishes, Antennartide, 
belong to the tropical seas and rarely descend far below the sur- 
face. Most of them abound about sand-banks or coral reefs, 
especially along the shores of the East and West Indies, where 
they creep along the rocks like toads. Some are pelagic, drifting 
