228 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
brown bars, largest as wide as eye, first from front of dorsal to base of pectoral, second downward 
from fourth, fifth, and sixth spines, third from ninth and tenth spines toward vent, fourth from last 
spines to middle of anal, fifth from soft dorsal across peduncle upon anal; sometimes a faint sixth bar 
upon base of caudal; first four not reaching belly; axil dark, front of base of pectoral black. Smaller 
individuals (2 inches and less) have, in spirits, ground-color nearly everywhere uniform light-brown, 
made up of small punctulations. In life the color is not much different; the interspaces are brassy- 
yellow, fading to white on side; head and fins pale-bluish. 
This species, which reaches a length of 6 inches, is found in tropical America on both coasts; 
abundant in tide-pools and about coral reefs from Guaymas to Peru and Florida to Uruguay, but 
much less abundant than the species of Eupomacentrus. It is common about Porto Pico, but difficult 
to capture, as it is found chiefly where nets can not be used to advantage. We have specimens, from 
0.75 to 5.5 inches, from San Juan, Puerto Real, and Culebra. 
Chxtodon cauda bifurca, fasciis S. albis, Linnaeus, Mus. Adolph. Frederick 1, 64, “ India.” 
Chxtodon saxatilis Linnaeus, Syst. Nat., ed. X, 276, 1758; after Mus. Ad. Fr. 
Clixtodon mauritii Bloch, Ichthyol., Ill, 213, pi. 109, 1785, Brazil; on a bad drawing by Prince Maurice 
Chxtodon marginatus Bloch, Ichthyol., Ill, 98, pi. 207, 1787, Martinique; on a drawing by Plumier. 
Glyphisodon moucliarra Lac6p6de, Hist. Nat. Poiss., I V, 542, 1803, Brazil, etc.; after various authors. 
Chxtodon sargoides Lacdpede, Hist. Nat. Poiss., IV, 453, 1803, Martinique; on a drawing by Plumier. 
Glyphidodon troschelii Gill, Proc. Ac. Nat. Sci. Phila. 1862, 150, Cape San Lucas. 
Glyphidodon saxatilis Poey, Fauna Puerto-Riquena, 336, 1881; Stahl, 1. c. 77 and 164, 1883. 
Abudefduf saxatilis, Jordan & Evermann, 1. c., 1561, 1898. 
Family LI. LABRIDtE. The Wrasse -fishes. 
Body oblong or elongate, covered with cycloid scales; lateral line well developed, continuous or 
interrupted, often angularly bent. Mouth moderate, terminal; premaxillaries protractile; maxillaries 
without supplemental bone, slipping under the membranaceous edge of preorbital ; anterior teeth in jaws 
usually very strong and canine-like; teeth of jaws separate or soldered together at hase, not forming a 
continuous plate; no teeth on vomer or palatines; lower pharyngeals completely united into one bone, 
without median suture, this bone T-shaped or V-shaped, its teeth conical or tubercular. Lips thick, 
longitudinally plicate. Nostrils round, with 2 openings on each side. Dorsal fin continuous, spinous 
part usually long, its spines rather slender, 3 to 20 in number; anal similar to soft dorsal, with 2 to 
