BY CHARLES W. DE VIS, M.A. 453 



caudal peduncle. Pale spots on the operculum, and forming two 

 curved lines below the orbit and with an angular streak on its 

 posterior third, and a few small white spots anteriorly ; spinous 

 dorsal dark edged, soft, with a blackish base gradually rising 

 higher posteriorly; caudal largely white tipped, dark between 

 the lobes. 



Locality, South Sea Islands. Collector, Captain Eastlake. 

 Glyphydodon uniocellatus. Quoy and Gainard. 



Dr. Gunther regards G. assimilis as quite distinct from uniocel- 

 latus, and judging from his diagnosis of it, with good reason. But 

 a fish occurs in Captain Eastlake's collection, which appears to be a 

 link between the two, and is therefore worthy of notice. It is 

 blue with a darker blue spot on the base of each scale. In G. 

 assimilis, the lower part of the head is brown (in life yellow.) In 

 the present fish this colour is continued with a nearly straight 

 upper limit to the posterior third of the anal and is traversed 

 longitudinally by an irregularly undulating blue streak. The 

 black dorsal spot is on the base of the posterior rays, and there are 

 traces of blue longitudinal lines on the anal. Qn the whole 

 however, its distinctive characters are not sufficient to separate it 

 from either of the two species referred to. Two specimens alike. 

 Nesiotes n. g. Fam. Labridse. 



Anterior canines }, posterior none ; laterals confluent, with 

 distinct serration. Lateral line resumed. Cheeks and opercles 

 scaly. Base of dorsal not scaly. Twelve dorsal spines. 



Differs from Decodon in the absence of a posterior canine, and 

 from Semi-cossyphus in the serrations of the dental ridge. 



N. PURPURASCENS 



D. 12/13. A. 3/14. L. Lat. 37. 



Height 3 J, head 4 in the total length ; orbit J, snout 4 in the 

 length of the head ; interorbit J of orbit. 



Scales on cheeks in 4 series, imbricate ; on operculum 

 few, large, not imbricate. Profile convex above, much less so 

 beneath. Pre-orbital low. Caudal bluntly pointed. Dorsal and 

 anal acuminate, last rays rather prolonged. 



