Fig. 459.—Ozorthe dictyogramma (Hertzenstein), a Japanese blenny from Hakodate: showing increased number of lateral lines, a trait characteristic of many fishes of the north Pacific.
Fig. 460.—Stichæus punctatus Fabricius. St. Michael, Alaska.
The Quillfishes: Ptilichthyidæ.—The Ptilichthyidæ, or quillfishes, are small and slender blennies of the North Pacific, with very numerous fin-rays. Ptilichthys goodei has 90 dorsal spines and 145 soft rays. Another group of very slender naked blennies is the small family of Xiphasiidæ from the South Pacific. The jaws have excessively long canines; there are no ventral fins. The dorsal fin is very high and the caudal ends in a long thread.
Fig. 461.—Bryostemma otohime Jordan & Snyder. Hakodate, Japan. Family Blenniidæ.
Fig. 462.—Quillfish, Ptilichthys goodei Bean. Unalaska.
Fig. 463.—Blochius longirostris Volta, restored. Upper Eocene of Monte Bolca. (After Woodward.)