. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. 18 BULLETIN OF THE BUREAU OF FISHERIES Bank and from the south coast of Newfoundland. Jensen 9 described others from the neighborhood of the Faroe Islands, and since then Huntsman has recorded them from the mouth of the Bay of Fundy and Hjort10 from Norway. The eggs are demersal and stick fast in clusters to some fixed object—in Jensen's case to a Bryo- zoan—both by their filaments and by slime threads. Newly hatched hags have never been seen, but inasmuch as the smallest yet described (
. Bulletin of the United States Fish Commission. Fisheries -- United States; Fish-culture -- United States. 18 BULLETIN OF THE BUREAU OF FISHERIES Bank and from the south coast of Newfoundland. Jensen 9 described others from the neighborhood of the Faroe Islands, and since then Huntsman has recorded them from the mouth of the Bay of Fundy and Hjort10 from Norway. The eggs are demersal and stick fast in clusters to some fixed object—in Jensen's case to a Bryo- zoan—both by their filaments and by slime threads. Newly hatched hags have never been seen, but inasmuch as the smallest yet described (about 2J^ inches long), probably not long out of the egg, already resembled the adult in external appearance there is no reason to suppose that the hag passes through a larval stage greatly different from the adult. The few egg finds thus far reported, being from 50 to 150 fathoms, point to rather deep water for the spawning of the hag. The Norwegian eggs mentioned by Hjort (taken in shrimp trawls) were on ooze bottom, but whether the hag invariably seeks this type of ground for breeding remains to be learned. I need only add that, to judge from Cunningham's experience with hags in aquaria, the females cease to feed with the approach of sexual maturity, as do so many other fishes. 2. Sea lamprey (Petromyzon marinus Linnaeus) Lampret; Spotted lamprey; Lamper; Eel-sucker; Great sea lamprey. Fig. 3.—Sea lamprey (Petromyzon marinus) Jordan and Evermann, 1S9&-1900, p. 10. Description.—Lampreys are very primitive vertebrates, eel-like in appearance, with soft, cartilaginous skeleton. They lack paired fins but have well developed dorsal and ventral finfolds. In the adult the jaws are so rudimentary that apparently they are wanting; the mouth is a longitudinal slit when closed, but when open forms an elliptical disk at the tip of the snout and is armed with many horny, hooked teeth arranged in numerous (11 to 12) rows, the innermost the largest. There are seven pairs of ope
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