This white-fish is not remarkable for excellence as food. AYRESIA, n. g.[7] _Generic characters._—Form elongated, suboval; the outline more curved above than below. Scales large, finely pectinated, completely covering the body and head, except in front of orbit; smaller on head, and becoming very small where they extend over parts of the fins and tail. Teeth numerous, acute, entire, the anterior row largest; those below larger than above, and flattened posteriorly. A few smaller ones crowded behind these near symphysis. Pharyngeals villiform. Premaxillars protractile, the upper arched, twice as high as wide, the lower shutting within it. Preoperculum entire, a very small obtuse spine at angle of operculum. Pectorals rather long and pointed. Caudal deeply forked, the lobes acute. Dorsal long, anal moderate. Differs from _Pomacentrus_ (Lacepede) chiefly in a more arched dorsal outline, armed operculum and unarmed preoperculum, pointed fins and tail, proportions of fins. The dorsal outline appears to become much more convex with age, chiefly from deposit of fat on the occiput, as is the case in some Labroids, as for instance, _L. pulcher_ (Ayres) and _Julis modestus_ (Girard), the latter also growing higher in proportion to its length throughout. The dotted line represents the dorsal outline of a specimen one-fourth larger than that figured, but otherwise closely like it. AYRESIA PUNCTIPINNIS, Cooper, n. sp., State coll. No. 596. [FIG. 18.] [Illustration: FIG. 18.] _Specific characters._—Head forming less than a fourth of total length (0.18), eyes less than one-third the length of head, and less than its own diameter from end of snout, height of head behind orbit about equal to its length. Greatest thickness of body about one-eighth of total length. Height of pectoral equal to one-fourth the distance from snout to fork of tail (0.21). Dorsal commencing above pectoral joint, its spinous portion nearly one-third of its total length, and one-sixth of its height, the first spine shortest. Soft rays becoming three times as high, forming an obtuse point behind; the last ray about as long as the spines (the first dorsal spine should be one-fourth longer than in the figure). Caudal peduncle slightly contracted, shorter than caudal rays. Fork of tail extending half-way to its base, the upper lobe longest, being one-fifth of the total length. Anal commencing beneath the tenth dorsal spine, and ending a little anterior to end of soft dorsal, its base less than one-sixth of total length (0.17). Br. V-V D.XIII, 6-1-6, C. 3-1-6 6-1-3, A.II-11, V. I-8, P-19. Scales 30 3/8 4/9 3/3 lat. line ant. 19.