1^2' 



November 13, 1832. 



Lieutenant-Colonel Sykes in the Chair. 



A n\imerouR collection of Fishes was exhibited which had been 

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

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

 .species, among which were types of various genera not previously 

 contained in the Society's Museum. They were severally brought 

 under the notice of the Committee by Mr. Bennett, who dwelt par- 

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

 follow : 



DiAcoPE SPILURA. Diuc. vittis I'tifis latis parallelis utrinque 



quinque, qiiarum secundd tertidque ociihtm att'mgentibus, quartd 



axillum, qtdnki cornmissuram oris ; labio inferiore aurantiaco ; 



inaculd 7naynd niyrd ante basin pimuK caudalis ; plnnce do7'salis 



parte spinosd superne inferneque aaguste nigrescenti marginatd. 

 D ' » A 3 



XJ. T -3-. /\. -g-. 



T>iac. odoimeatcB, &c. affinis. Differt a spcciebus adhuc cognitls 

 numero radiorum et pictura. Dens angularis antice utrinque in max- 

 illa superiore maximus ; inter hos duo majores ; in maxilla, inferiore 

 dentes duo laterales utrinque majores. 



DiAGRAMMA SiBBALDi. Diag . albescens, fasciis tribuslongitudina- 

 libus, (quarum medid laid postice ramosd per })innam caudalem me- 

 diam excurrente, superiore latissirnd basin pinme dorsalis includente 

 antice posticeqve interruptd, inferiore mediocri simplice,) naso, 

 viaculd suborbitali, fronte, maculd ante basin pinna pectoralis, 

 pinnd pectorali prater marginern siiperiorem, plagd triangulari ad 

 basin pinna analis, aliisque duabus submarginalibus pinna caudalis, 

 castaneo-nigris ; infrcl et ad apicem pinna analis flavus. 



D.44.A.-i-. 



Ch^todon xanthocephalus. Chat, suborbicularis : pinnis rotun- 

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

 fensd ; lineis transversis quinque vel sex subfraclis ^Mrhm satura- 

 tioribus ; capite {prater opercula strigamque argenteam infra- 

 ocularem,) guld, pectore, pinnis ventralibus, linedque post-opercu- 

 lari p)er basin pinna pectoralis ductd, fluvis ; pinnarum dorsalis 

 analisque parte mo Hi externi nigrescente fiavo jimbriatd, basin ver- 

 sus flavescente lined sanguined interne cinctd ; caudd pinndque 

 caudali superne inferneque flavis, hdc quadratd hyalind brunneo ad 

 radios lineatd. 



Striga prima a radio spinoso quarto pinnse dorsalis pone axillam 

 decurrit J banc sequuntur strigcE tres quatuorve vcntrcm tantum ver- 

 sus ibique indistinctEe 3 secunda a basi radii spinosi sexti ; tertia oc- 



