Pamphlets on Forestry. Fish and Game, Հատոր 11896 |
Բովանդակություն
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Common terms and phrases
abundant adipose fin anal fin Anal rays anteriorly barbels base of caudal belly black spot Body elongate bones broad Bull Catostomus caudal fin caudal peduncle Coll Color compressed COPE CUVIER & VALENCIENNES dark decurved depth Dorsal fin dusky EIGENMANN eye large fontanelle front of dorsal front of eye genus gill opening Gill rakers GIRARD grinding surface GÜNTHER head Hist Hybopsis Ichth inches JORDAN & DAVIS JORDAN & GILBERT LACÉPÈDE Lake lateral band lateral line length Leuciscus lobe longer lower jaw males margin maxillary barbels maxillary reaching narrow nearly nostrils NOTROPIS oblique occipital process olivaceous opercle pale pectoral fins pectoral spine Phila Pimelodus POEY Poiss posterior premaxillaries Proc RAFINESQUE River Salmo scales short sides silvery slender species specimens STEINDACHNER streams Subgenus Surv Synopsis tail teeth tip of snout Type U. S. Fish Comm U. S. Nat upper jaw ventrals vertebræ vomer
Սիրված հատվածներ
Էջ 142 - Body with four broad cross-blotches, one before dorsal, one behind it, one on middle of adipose fin, and one small one behind it.
Էջ 37 - ... caudal; caudal fin with a single notch toward its tip, its lower lobe developed. One genus, with 5 species, inhabiting most warm seas. Large sharks, known at once by the singular form of the head, which is not quite the same in any two species.
Էջ 598 - This loose connection of the single parts of the body is found in numerous deep-sea fishes, and is merely the consequence of their withdrawal from the pressure of the water to which they are exposed in the depths inhabited by them. When within the limits of their natural haunts the osseous, muscular, and fibrous parts of the body will have that solidity which is required for the rapid and powerful movements of a predatory fish.
Էջ 102 - Premaxillary forming most of the margin of the upper jaw ; the maxillary transversely divided into several pieces. Lower jaw composed of as many pieces as in reptiles ; coronoid present. Both jaws with an outer series of small teeth, followed by...
Էջ 485 - ... in a longitudinal series; dorsal and anal fins short, usually of 10 to 12 rays each; caudal fin truncate, emarginate or forked, its peduncle comparatively stout; sexual peculiarities variously developed, the males in typical species with the jaws prolonged and the front teeth enlarged, the lower jaw being hooked upward at the end and the upper jaw emarginate or perforate.
Էջ 760 - Body compressed, elongate, covered with small ctenoid scales. Lateral line continuous. Head long ; mouth small, at the end of a long, compressed tube. Lower jaw prominent, with a barbel at the symphysis. Premaxillary feeble, not protractile ; maxillary broad, triangular, with a supplemental bone. Teeth minute, in bands, on lower jaw and vomer. Branchiostegals 4. Gills 4, a slit behind the fourth.
Էջ 413 - From this condition they become gradually shorter and more compact, shrinking from 3 or 3) inches in length to 2 inches. According to Dr. Gilbert, this process, like that seen in various eels, 'is a normal one, through which all individuals pass. In the Gulf of California, where these fishes abound, these band-shaped young are often thrown by the waves on the beach in great masses.
Էջ 76 - Sting rays of large size, abundant in warm seas. Many of the spinous species are nearly or quite smooth when young, becoming rough with age. Some of our species are yet imperfectly known and much of the synonymy is uncertain.
Էջ 269 - Origin of dorsal midway between tip of snout and base of caudal, directly over ventrals.
Էջ 769 - Occiput with a raised keel ; joint between the occiput and the first dorsal shield more perfect than usual, so that the head can be placed at an angle with the body. Greatest depth about equal to length of postorbital part of head. Skin on breast and anterior ventral plates thin, showing the striation of the bones.