KYPHOSIDAE. 121 
the scales on nape with those on cheeks; upper edge of opercle scaly, rest of 
head naked; membranes of all the fins scaly nearly to their margins; caudal fin 
emarginate; upper lobe slightly longer. Teeth broad, incisor-like, those on 
sides somewhat narrower and indistinctly trilobate; in front of the main series 
and close to them are supernumerary teeth, these not in a continuous series, but 
lying in front of every second or third tooth of the main series and are consider- 
ably shorter than those in main series. 
M. C. Z. 29450 (2 specimens), 29547 (6 specimens). 
Color in alcohol: — general color brownish gray, clouded with dark brown; 
top of head dark brown, grayish below; a dark band across chin; fins dark 
brown, pectoral and ventral faintly clouded with darker. 
A cotype 4.25 inches long from Easter Island, shore, has head 3.66 in length 
without caudal; depth 2.57; eye 3.42 in head; snout 2.82; interorbital 2.82: 
dorsal XVI, 12; anal III, 10; scales 16-85-25. 
General color brownish gray, head darker, coarsely clouded with dark 
brown; mottlings tending to form cross-bars, those on middle of body more 
distinct; pectoral gray with dusky rays, the other fins dark brown; the dorsals 
show faint traces of spots; dusky bar across chin; another fainter across throat; 
some faint mottlings on breast. 
Teeth of lower jaw in front, incisor-like, only faintly showing notches, 
those on sides of Jower jaw and all on upper distinctly trilobate; the teeth on 
each jaw in a single series. 
Another cotype, No. 3180, M. C. Z. 29658, 9.37 inches long from Cook Bay, 
Easter Island, has head 4 in length; depth 2.30; eye 3.84 in head; snout 2.50; 
interorbital 2.77; dorsal XV, 13; anal III, 10; scales 16-89-25. 
General color same as in 4.25 inch specimen; mottled everywhere with 
brown, but there are no traces of cross-bars. 
Movable teeth in a single series, mostly trenchant, some, however, showing 
traces of three lobes. 
Twenty-six specimens .75 to 1.5 inches long from La Perouse Bay, Easter 
Island, December 17, 1904, shore. 
Of these three have dorsal XV, 12; one has dorsal XV, 13; 5 have dorsal 
XVI, 11; 14 have dorsal XVI, 12 and 3 have dorsal XVI, 13; the anal is con- 
stantly III, 10. 
The 1.5 inch specimen has head 3.20 in length; depth 3.20; eye 3.33 in 
head; snout 3.33; interorbital 4; dorsal XVI, 11; anal III, 10. Two speci- 
mens 2% and 3%% inches long from the same place. 
