374 MR. C. TATE REGAN ON 



of fish (4i in B. cultraium), eye larger, H in length of henxl or 

 nearly equal to its distance from edge of lower limb of pras- 

 operculum (4| in head and 1| in its distance from lower edge 

 of prjeoperculum in B. cultratum), and fin-rays more numerous. 

 Dorsal VIII, I 27 ; anal III 32 (YIII, I 23-25 and III 28-30 

 in B. cultratum). 



The type from Easter Island measures about 200 mm. in total 

 length (to end of middle caudal rays), the examples of i?. cultratum 

 from Norfolk Island that I have examined 170 to 180 mm.] 



28. A Revision o£ the Fishes o£ the Genus KuMia. 

 By C. Tate Regan, M.A., F.ZS. 



[Received March 4, 1913 : Read April 8, 1913.] 



(Text-figures 68 & 69.) 



Index. p^^^^ 



KtiJiUa ccerulescens, sp. n 376 



K. sauvacfii , sp. n 377 



IK. splendens, Sip. n 379 



I have been led to undertake a revision of the species of the 

 Indo-Pacific genus Kuhlia Gill, owing to the difficulty I 

 experienced in determining the correct name for a fish of this 

 genus from Easter Island {Kuhlia mutabu7ida). 



To the synonymy of Kuhlia as given by Boulenger (Cat. Fish. 

 i. p. 36) may be added Boulengerina (nou Dollo) Fowler (Proc. 

 Acad. Philad. 1906, p. 512), and S'afole Jordan (Proc. U.S. Nat. 

 Mus. xlii. 1912, p. 655). 



These names are intended to distinguish the more silvery 

 and more strictly marine species with more numerous gill-rakers 

 ISafole) from the spotted forms that enter rivers and have fewer 

 gill-rakers {Kuhlia). There is but little justification for such 

 a generic division. K. hoainensis is intermediate between the 

 two groups in the number of gill-i^akers ; K. marginata may 

 sometimes be unspotted, and in the form and coloration of the 

 caudal fin is neai-er to K. humilis than to K. rupestris, and 

 K. splendens, a silvery, unspotted species, with numerous gill- 

 rakers, is described below from the fresh-waters of Rodriguez. 



Synojjsis of the Species. 



I. Lateral line of 40 to 45 scales (+ 4 or 5 on base of caudal 



fin) ; 16 to 19 gill-rakers on lower part of anterior 



arch ; body usually spotted. 



A. Caudal fin slightly emarginate ; middle rays f or | as 



long as longest; lobes rounded. Dorsal X 11. 



Anal III 10. 



1. Maxillary extending to below middle of eye (young) 



or beyond (adult) 1. rupestris. 



2. Maxillary not or barely reaching middle of eye in 



adult. 



