92 ICHTHYOLOGY 
, )( vM[PH.IPRLOH BICOLOR. 
This sort is very nearly allied to the Lutjanus Percula of 
Lacepede, and, if Dr. Gunther is right in uniting with it the 
Amp. Tunicatus, Ocellaris, Melanucus, of Cuvier and Valen- 
ciennes, it might possibly prove to be also a simple variety of 
this sort ; but the form is shorter, and the number of dorsal 
spines seem very different. 
The body is nearly like the figure of Tunicatus, given by 
Lesson (Voyage de la Coquille, pi. 25, fig. 3) but is shorter, and 
the upper profile more convex. The height is twice and two- 
thirds in the total length of the fish ; the head is four times 
in the same, and the eye three times in the length of the 
head. 
The prseoperculum is bilobed and each lobe is very strongly 
serrated. 
The dorsal is formed of thirteen spines and of thirteen rays ; 
the spines are as follows : the first is about one-third 
longer than the second ; the five following are nearly equal to 
this, and rather curved ; the seventh, eighth and ninth are 
straight, and become gradually shorter ; the others are also 
straight, the tenth and eleventh are equal to the precedent, the 
twelfth a little longer, and the thirteenth twice as long, slender, 
and forming a part of the second portion of the dorsal. The 
caudal is oblong, of twenty-two rays ; the anal has two spines 
and twelve rays ; the ventrals are rather large ; they have 
one rather long and slender spine and five rays ; the pectorals 
are rounded posteriorly, rather shorter than the ventrals, and 
formed of seventeen rays. The lateral line begins over the 
upper end of the operculum, curves towards the back, which it 
approaches gradually ; from whence it reaches the back part of 
the body ; it is only marked posteriorly by a series of very 
feeble and interrupted ridges, which extend to a little more 
than the second portion of the dorsal, where they dis- 
appear. 
The colour is of a deep black, with three broad transverse 
pearl-white bands ; the first arched, and covering the posterior 
part of the head ; the second beginning behind the high spines 
