. Bulletin - United States National Museum. Science. THE SHORE FISHES OF PERU XENICHTHYS RUPESTRIS, new species Figure 50 233 to ; depth to ; D. XI-I, 17 or 18; A. Ill, 17 or 18; P. 15 or 16; scales 65 to 70; vertebrae 26 (one specimen dissected). Body quite compressed, its greatest thickness about half its depth; back moderately elevated; profile over snout and eyes nearly straight; ventral outline anteriorly rather strongly convex; head quite com- pressed; caudal peduncle short, compressed, to in head; snout pointed, to ; eye round, its vertical and longitudi
. Bulletin - United States National Museum. Science. THE SHORE FISHES OF PERU XENICHTHYS RUPESTRIS, new species Figure 50 233 to ; depth to ; D. XI-I, 17 or 18; A. Ill, 17 or 18; P. 15 or 16; scales 65 to 70; vertebrae 26 (one specimen dissected). Body quite compressed, its greatest thickness about half its depth; back moderately elevated; profile over snout and eyes nearly straight; ventral outline anteriorly rather strongly convex; head quite com- pressed; caudal peduncle short, compressed, to in head; snout pointed, to ; eye round, its vertical and longitudinal diameters being equal, to ; interorbital convex, to ; mouth quite oblique; lower jaw projecting; maxillary reaching a little beyond front of eye, to in head; teeth minute, in a narrow band on each jaw, and in a V-shaped band on vomer; gill rakers small, those at angle scarcely as long as pupil, 16 to 18 more or less developed on lower and. Figure 50.—Xenichthys rupestris, new species. From the type, 90 mm. long, Lobos de Afuera Bay, Peru ( No. 127998). 6 or 7 on upper limb of first arch; scales ctenoid, reduced in size along the back, the reduced scales extending to lateral line anteriorly, but not posteriorly, about 12 or 13 rows between lateral line and base of first dorsal spine, and 10 or 11 between lateral line and base of first soft ray of dorsal, scales extending more or less on all the fins exclusive of the spinous dorsal, the second dorsal and anal being densely scaled; dorsal fins nearly or quite separate, the spines rather weak, the fourth usually longest, generally failing to reach origin of second dorsal if deflexed, to in head, margm of fin nearly straight; caudal fin (more or less damaged) apparently with a very shallow fork; anal spines small, graduated, the second to in head, origin of fin about opposite that of dorsal, the soft part similar to that of dorsal; ventral inserted a little behind base of pectoral
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
