HOLOCENTRIDAE. 91 
51721, 73 inches long and find it differs from the measurements given by Jordan 
and Seale as follows: — head 3.08 instead of 3.40 in length; eye 2.19 instead of 
2.50 in head; dorsal X-1, 153 instead of X-1, 14 (15 in figure); anal IV, 143 
instead of IV, 13 (14 in figure); interorbital 3.53 instead of 3.85 in head. 
The patch of enlarged blunt outer teeth on each side of upper and lower 
jaw referred to by Jordan and Seale are very probably sexual or breeding tubercles 
since they are not constant, and are found in other species. If, however, they 
refer to the presence or absence of true outer enlarged teeth in the maxillary, 
these also are not characteristic, since they are present in varying degree in all 
the specimens we have examined. The dentition on the lower posterior margin 
of maxillary is not characteristic, it may or may not be present; in some speci- 
mens it is found on one side and not on the other. 
The following comparative measurements, of eight examples here identified 
as M. pralinius from Cook Bay, Easter Island, three examples from Samoa 
(identified as such by Jordan and Seale), the Type of M. sanguineus from Samoa 
and the Type of M. symmetricus from Hawaii, show such slight differences in 
essential characters that we are unable to separate the species. 
Proportional measurements of M. pralinius from Cook Bay. 
| | 
| No. 3188 No. 3189 No. 3190 No. 3191 
Head in length without caudal 2.94 2.96 3.07 3.08 
Depth in length without caudal | 2.64 | 2.69 2.56 2.67 
Eye in head 2.03 2.04 2.19 2.14 
. —L —L | R-L 
Maxillary teeth on lower edge 2s Re 3-9 none 
Interorbital in head | 4.07 4.08 | 67133 355) 
Scales 33-38 +3-7 33-38+3-7 33-37+47 33-36+47 
Dorsal X-1, 153 XI, 15> } XI, 155 X-1, 15} 
Anal IV, 13 IV, 13 TVisel ss IV, 14 
| Dusky punctulations on tip | Dusky punctulations on tip 
| of anal. | of soft dorsal and anal. 
Proportional measurements of M. pralinius from Cook Bay. 
No. 3192 No. 3193 No. 3194 No. 3195 
Head in length without caudal 2.92 2.94 2.68 2.96 
Depth in length without caudal 2.50 2.54 2.30 2.62 
Bye in head | 2.03 2.07 2.14 2.07 
Maxillary teeth on lower edge R. bunched R. group of 9. R-L R-L 
11 of them. 124 11-7 
L. single row | L. group of 
of 11. 20. 
