182 



November 13, 1832. 



Lieutenant-Colonel Sykes in the Chair. 



A numerous coilection of Fishes was exhibited \vhich had been 

 formed in Ceylon by Dr. Sibbald, Corr. Mcmb. Z. S., and had been 

 presented by him to the Society. It included upvvards of seventy 

 species, aniong- which were types of various genera not previoiisly 

 contained in the Society's Museum. They \vere severally brought 

 under the notice of the Committee by Mr. Bennett, vvho dvvelt par- 

 ticularly on those which he regarded as nevv to science. They are as 

 foUovv : 



DiACOPE spiLURA. Diūc. vitHs riifis lads paraJlelis utringtie 



quinqne, quurum secimdd tertidque oculum nttingenttbus, ąuartd 



ai'illam, quintd commissuram oris ; labio inferiore aurantiaco ; 



^ tnaculd magnd nigrd anie hasin pinn<E cmulaUs ; piniia dorsalis 



parte spinosd svperne inferneque anguslt nigrescenti marginatd. 



D 1 1 A ' 



Diac. odolineatce, &c. affinis. Differt a speciebus adhuc cognitis 

 numero radiorum et pictuia. Dens angularis antice utrinąue in max- 

 ilhi superiore maximus ; inter hos duo majores ; in maxilla inferiore 

 dentes duo laterales utrinque majores. 



DiAGEAMMA SiBBALDi. Diag. ttlbesccns, fuscUs trihus hngiiudina- 

 libus, (quarum viedid latd postice raniosd perpinnain caudalem me- 

 diam excurrente, superiore latissimd basin pinntE dorsalis includcnte 

 antice posticeque interruptd, inferiore mediocri siniplice,) naso, 

 maculd suborbitali, fronte, maculd aute basin pinnce pectoralis, 

 pinnd pectorali prater marginėm superiorem, plagd triungulari ad 

 basin pinnee analis, aliisgue duabus submarginalibus pinna caudalis, 

 castaneo-nigris ; infrd et ad apicem pinncE analis f avus. 



D. 44- A. f. 



Ch^todon xanthocephalus. Ch(Et. suborbicularis : pinnis rotun- 

 dutis : pallide brunnescens ; fascid oculari haud ultra oculum ex- 

 tensd; lineis transversis quinque vel sex subfractis parimi satura- 

 tioribus ; capife (prceter opercula strigatngue argenteam infra- 

 ocularevi,) gulu, peclore, pinnis ventralibus, linedque post-opercu- 

 lari per basin pinnce pectoralis ductd, flavis ; pinnaru7n dorsalis 

 analisque parte molli externe nigrescente flavo fimbriatd, basin ver- 

 svs flavescente lined sanguined interne cinctd ; caudd pinndque 

 caudali superni inferneque flavis , hdc quadratd hyalind brunneo ad 

 radios lineatd. 



Striga prima a radio spinoso ąuarto pinnas dorsalis pone axi]lam 

 decurrit; hanc sequuntur strigae tres ąuatuorve ventrem tantum ver- 

 sus ibique indistinctae j secunda a basi .radii spinosi sextiį tertia oc- 



