372 MR. C. TATE REGAN ON 



of eye 7 in length of head, 2| in length of snotit. Interorbital 

 region strongly convex, its width ^ the length of head. A 

 naked strip running backwards from occiput to origin of dorsal 

 fin. 28 scales in the lateral line. Dorsal IX 12. Anal III 12. 

 Pectoral | the length of head. Caudal subtruncate. Each scale 

 with a blue spot surrounded by a dark ring ; head with blue 

 horizontal stripes or series of spots ; one through upper part of 

 eye ; another from end of snout through lower edge of eye, a 

 third across the cheek ; vertical fins with spots like those on the 

 body and with a narrow pale blue or white margin ; base of 

 pectoral blackish. 



A specimen of 205 mm., from Easter Island, diflfei-s from one 

 of the same size of A. ccertdeopunctatits Riipp. of the ti"opical 

 Indo-Pacific, especially in the broader and more convex inter- 

 orbital region, the incompletely scaled nape, and the difljerent 

 coloration of the head, A. cceruleopunctatus having vertical 

 stripes running from eye to suboperculum. 



A second example of A. pulcher, 165 mm. in total length, 

 from Tahiti (Wragge), is extremely similar to the type, but has 

 the interorbital region less convex, and the naked median strip 

 on the nape less elongate, not quite reaching the dorsal fin. 



Blenniid^. 



10. Salarias arenatus Bleek. 



Alticus striatus (? Guv, & Val.) Kendall & Radclifie, Mem. Mus. 

 Comp. Zool. XXXV. 1912, p. 134. 



" Patuki.'' 



A species of the East Indian Archipelago and Islands of the 

 South Pacific. 



Balistid^. 



11. Pseudomonacanthus paschalis, sp. n. (PI. LX.) 

 " Coreba."' 



Scales small, irregular, covered with minute spines. Depth 

 of body 2| in the length. Snout produced, with upper profile 

 a little convex, more than 3 times as long as eye and a little less 

 than I the length of the fish. Lower angle of gill-opening below 

 anterior margin, base of pectoral below middle of eye. Dorsal 

 spine neai'ly as long as snout, above posterior ^ of eye, antero- 

 posteriorly compressed, with a series of 24 small barbs on each 

 side ; soft dorsal of 35 rays, elevated anteriorly ; anal rays 34. 

 Caudal rounded. Greyish, with numerous scattered small dark 

 spots. 



A single specimen, 300 mm. in total length. 



This species is related to the Australian P. ayraudi Quoy & 

 Gaim. 



