46 BEIIYCID^. 



22. Holocentrum sammara. 



Sciajna sammara, Forska/, p. 48 ; Lacep. iv. p. 314. 



Perca .^ammara, HI. Schii. p. 89. 



Labriis angulosus, Lacep. iii. p. 4-30. pi. 22. f. 1. 



Iloloceutrum sammara, Riipp. Atl. Fische, t. 22. f. 3 ; Cni\ 8f Val. iii. 



p. 216; Sleeker, Perc. p. 54, and Amboina, ii. p. 555. 

 flolocentrum cliristianum (Ehrcnhery) ; Cuv. ^- Val. iii. p. 219 : cfr. 



Riipp. Atl. p. 85. 



D. 10 I j^^. A. ^-1. L- lat. 40. L. transv. 4/7. Vert. 11/16. 



The height of the body is four times in the total length, the length 

 of the head 3|- ; the distance between the eyes is 4-1- in the latter ; 

 the length of the snout is nearly equal to the diameter of the eye. 

 The upper processes of the intcrmaxillaries reach far between the 

 eyes ; tm-binal bone not coveiing the intermaxillary ; lower jaw 

 very prominent. Operculum with two distinct spines, the lower of 

 which is rather the smaller. Lobes of the caudal equal. The third 

 anal spine is 4f in the total length. The spinous dorsal with a deep 

 black blotch between the first and fourth spines, and with two series 

 of white spots, one along the upper margin, and the other along the 

 base. 



Red Sea ; Cape of Good Hope ; Amboyna ; Sumbawa. 



a. Adult. Ambopia. From Mr. Frank's Collection. 



b. Adidt. Amboyna. From Mr. Stevens's Collection. 



c. d. Adult : stuffed. Red Sea. From the Frankfort Museum. 



€. Adult : stuffed : not good state. Cajie Seas. Presented by Sir 



A. Smith. 

 /, g. Half-grown. India. Presented by the Zoological Society. 

 h, i. Adult : skeletons. India. Presented by the Zoological Society. 

 k. Adult. India. 

 I. Adult. India. From the Haslar Collection. 



SJceleton. — The general structure of the skeleton being the same 

 as in the preceding species, I give a detailed description of those 

 parts only which exhibit specific peculiarities. The fan-like ex- 

 pansion on the vertex is fonncd by nine or more radiating branches. 

 The orbital edge of the frontaLs is concave, these bones forming 

 a slight prominence above the anterior part of the eye. The 

 groove for the posterior processes of the intermaxillaiies reaches 

 far behind, nearly to the level of the second thii'd of the eye. The 

 maxillary bone is styliform at its origin only, and then forms an 

 oblong plate with an irregularly convex anterior margin, and with 

 the posterior rather concave. The supplementaiy bone is composed 

 of two pieces, the posterior of which is larger and sliglitly denticu- 

 lated in front. The intcrmaxillaries are separated from one another 

 by a deep notch ; they are three-quarters of the length of the 

 maxiUary bones, and have a very prominent and flat protuberance 

 behind. The mandibularies are distinguished by their length, con- 

 siderably overreaching the upper jaw. 



The bands of viUiform teeth of the jaws reach to their posterior 



