FISH. 9 
the lateral line are rough, but those above it, as well as those on the belly, nearly smooth : 
one taken from the middle of the side is of an oblong form, rounded at the free extremity, 
which is finely dotted and ciliated; its whole surface finely striated, with nine or ten deeper 
striz at the base. The pectorals are attached low down, rounded at the extremity, and about 
half the length of the head. The dorsal commences immediately above them, and is tolerably 
even throughout its course, extending nearly to the caudal. The membrane is rather deeply 
notched between the spines, which are very stout and invested at their tips with membrana- 
ceous tags, as in the Labride. The first spine is only half the length of the second and third ; 
the fourth is a little the longest, equalling two-fifths of the depth of the body; the fifth and 
succeeding ones decrease very gradually to the tenth, which is rather more than half the length 
of the fourth; the eleventh is a little longer, and is followed by the soft rays, the longest of 
which is about equal to the longest of the spinous. The anal commences about in a line with 
the second soft ray in the dorsal, and terminates before that fin, leaving double the distance 
between it and the caudal; first spine not half the length of the second and third, which are 
about equal, and much stouter; soft portion of the fin of a rounded form, with the middle rays 
nearly double the length of the second and third spines. Caudal even, or very slightly rounded, 
without any rows of scales between the rays. Ventrals a little shorter than the pectorals, im- 
mediately beneath them, pointed. 
Cotour.— Mottled with brown-yellow, black and white: upper and lower edges of the caudal, 
edges of the dorsal and anal, ‘ arterial’ and purplish red.” —D. 
Habitat, Galapagos Archipelago. 
Obtained off Chatham Island in the Galapagos Archipelago. There can be 
little doubt of its being an undescribed species, well characterized by its labriform 
appearance, as regards the fins, rounded and nearly entire margin of the pre- 
opercle, and scales smooth above, but rough beneath the lateral line. 
5. SERRANUS OLFAX. Jen. 
Puate IV. 
S. fusco-variatus ; spinis dorsalibus ad apices laciniis investitis ; naribus orbiculatis, 
apertura unica magnd, duas minores includenti ; dentibus aculeiformibus, retroflexis, 
seriebus paucis ; caninis, in maxilla superiore duobus, in inferiore quatuor, ceteris 
via fortioribus ; preoperculo margine adscendenti prope recto, versum angulum pau- 
lum sinuato, vix denticulato ; operculo mucronibus duobus, parvis, subequalibus, 
armato ; squamis ubique levibus. 
B. 7: D. Wute. An Sitl-©s1'7.8&e0.7) Ps 17 + V.1/5. 
Lone. unc. 234. 
Form.—Rather elongated, with the dorsal and ventral lines equally curved, and neither departing much 
from a straight line. Depth, in the region of the pectorals, equalling rather more than one- 
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