FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 185 



16695. Palaui Island, off northern Luzon. November 18, 190S. Length 155 mm. 

 22863. Togian Bay, Gulf of Tomini, Celebes. November 7, 1909. Length 



130 mm. 

 19946, 22684. Gane Road, Gillolo Island. December 1, 1909. Length 125 to 



136 mm. 

 15333. Hokuko, Formosa. January 29, 1910. Length 183 mm. 



Genus CHORISTISTIUM Gill 



Chorististium Gill, Proe. Acad. Nat. Sci. Philadelphia, 1862, p. 15. Type 

 Liopropoma rubre Poey, orthotypic. 



Body moderately long, compressed. Head moderate. Eye mod- 

 erate, anterior. Mouth large, lower jaw protruding. Maxillary with 

 supplemental bone. Teeth viiliform, in bands in jaws, on vomer and 

 palatines but none on tongue. Opercle with 2 or 3 flat spines. Pre- 

 opercle entire or very slightly serrate. Preorbital narrow. Gill rakers 

 moderate. Scales rather large, about 40 to 50. Soft dorsal and anal, 

 also caudal, scaly basally. Lateral line arched anteriorly, complete. 

 Dorsals well separated, spines 5 to 8 and soft dorsal with or without 

 spine and 9 to 12 rays. Anal spines 3, rays 8. Caudal truncate or 

 very slightly emarginate. Pectoral longer than ventral. 



Cuba, Samoa. This diagnosis is framed chiefly from the type of 

 Chorististium susumi Jordan and Seale in the United States National 

 Museum and Poey's account of the genotype Liopropoma rubre which 

 is said to be but 80 mm. long, and besides a third species we describe 

 as new. 



ANALYSIS OF THE SPECIES 



a 1 . Warm brown generally with seven deep brown well-defined narrow longitu- 

 dinal dark bands; fins uniform susumi 



a 2 . Brown with six very pale longitudinal bands, converge narrowly on head 

 toward eye; soft dorsal and anal each with large black ocellus marginally. 



swalesi 



CHORISTISTIUM SUSUMI Jordan and Seale 



Chorististium susumi Jordan and Seale, Bull. Bur. Fisher., vol. 25, 1905 

 (1906), p. 256, fig. 48. Apia, Samoa. — Fowler, Mem. Bishop Mus., vol. 

 10, 1928, p. 172 (copied). 



Depth 33^; head 2% to 2%, width 2V S to 2%. Snout 4f/ 5 to 5% 

 in head from snout tip; eye 4}4 to 434, greater than snout, greater 

 than interorbital to subequal with age; maxillary not quite reaching 

 opposite hind eye edge, expansion 1^ in eye, length 234 to 2% in 

 head from snout tip; broad bands of fine viiliform teeth in jaws, on 

 vomer and palatines, none on tongue; interorbital 4% to 7}i, level; 

 preopercle ridge finely serrate. Gill rakers 2 + 9, lanceolate, little 

 longer than gill filaments or 1% in eye; 4 or 5 more as rudiments 

 both above and below. 



Scales 46 in lateral line to caudal base and 5 more on latter; 5 

 scales above and 15 below, 28 predorsal forward near end of snout, 9 

 rows on cheek to preopercle edge; soft vertical fins and ventrals 

 scaly over basal half of each fin at least and pectoral with narrower 



