A Monograph of Marcus Island. — Appendix . 139 



brane incised, tips of rays free. Caudal truncate. Longest rays 

 of pectoral equal to head. 



Color in alcohol : pale brown, fading away to dull white on 

 belly and under side of head ; seven cross bands on sides of body; 

 above the median line they are distinct, and appear as heav}- dark 

 spots; below the lateral line they are very faint and divide, form- 

 ing two diverging bands. Two longitudinal rows of white dots 

 above median line. Caudal with three irregular dark transverse 

 bands. Head and upper half of body thickly sprinkled with fine 

 black dots ; upper part of membrane of spinous dorsal dark ; soft 

 dorsal with six dark diagonal bands, running backward. A wide 

 dark band on margin of anal ; free tips of anal rays white. Pectoral 

 pale and colorless to naked eye ; under lens the membrane appears 

 thickly sprinkled with minute dark dots. 



One specimen, 38 mm. long. B. P. B. Mus. No. 2458 is the type. 



Family PSEUDOCHROMID.^. 

 2459. Pseudogramma polyacanthus Bleeker. 



D. VII-18; A. 111-16 ; lateral line tubes 29; scales in lateral 

 series 50. Head 2.80 in total length without caudal, 3.33 including 

 caudal. Depth of head at occiput .25 of length without caudal, 

 .20 including caudal. Maxillary produced to posterior edge of 

 eye. Eye 4 in head, distant .66 of its own diameter from tip of snout. 

 Length of base of spinous dorsal 1.33 in base of soft dorsal. 



A specimen in poor condition, 50 mm. in length, the caudal 

 broken and most of the scales gone. It agrees very well in the main 

 with Kner's description of Psendochromis poIyacantJnis Bleeker 

 (Neue Fische Mus. Godeffro}', October, 1867, 717), based on a 

 specimen secured in the Viti Islands. But it is hardly the same 

 fish that Bleeker described under the name Pseiidogramma poly- 

 acanthus in "Sur la Famille des P-seudochromidoides et Revision 

 de ses Especes Insulindiennes", Verh. Ak., Amsterdam, 1875, 

 p. 25, while Bleeker's text does not agree with his figure. Bleeker's 

 description was based on a specimen from Ternate, in the East 

 Indies, while Kner's specimen was from the South Pacific, and this 

 specimen from Marcus Island would be more likely to agree with 

 the latter than the former ; it is possible that the Polynesian form 

 is a different species from that of the East Indies, but they may be 

 placed together until an abundance of good material is available. 



