348 



Archipelago. Possibly the specimens collected in 1888, most 

 probably in Sumatra, were introduced as this species is kept 

 in captivity f. i. in Singapore. 



7. Parosphro menus Bleeker. 



(BLEEKER, Verb. Akad. Amsterdam XIX. 1879, 

 Mem. Poiss. pharyng. labyrinth, p. 19). 



Compressed, oblong. Cleft of mouth oblique, not reaching 

 orbit. Jaws equal, with small, conical, fixed teeth. Scales ctenoid, 

 large, regularly arranged ; lateral line inconspicuous. Dorsal 

 with 13 spines and seven rays, originating somewhat behind 

 branchial opening and ending far before origin of caudal, the 

 spines increasing in size, the soft part being much higher and 

 acute. Anal with 13 spines and 8 rays, originating about below 

 3rd dorsal spine and reaching as far as dorsal, which it other- 

 wise equals. Caudal obtusely rounded as also pectorals. Below 

 their base originate the acute ventrals, with a spine and 5 rays, the 

 first of which is produced into a filament, which nearly reaches 

 anal. Angle of praeoperculum slightly denticulate; the other 

 opercular bones and praeorbital edentulous. [After BLEEKER]. 



Distribution: that of the single species known. 



i. Parosphromenus deissneri (Blkr.). 



Osphromcnns Deissneri Bleeker, Nat. Tijdschr. Ned. Indie XVIII. 1859, p. 376. 

 Poly acanthus deissneri Giinther, Cat. Brit. Mus. III. 1861, p. 381. 

 Parosphromenus Deissneri Bleeker, Verh. Akad. Amsterdam XIX. 1879, Mem. 



Poiss. pharyng. labyrinth, p. 20. 

 Parosphromenus deissneri Regan, Proc. Zool. Soc. London 1909, p. 775. 



D. XIII. 7; A. XIII. 8; P. ii; V. I. 5 ; L.I. 30; L.tr. ca. 10. 



Height 4 ! / 2 , head ca. 4 in length with caudal. Head acute, 

 its rostro-frontal line declivous. Rose coloured; a blackish line 

 below base of dorsal and above base of ventral; two broader 

 black longitudinal bands on each side continued on caudal, 

 lower part of side of head black-spotted. Length of single 

 specimen known 34 mm. [After BLEEKER, not seen by us]. 



Habitat: Banka, river Baturussak. 



8. Sphaerichthys Canestrini. 



(CANESTRINI, Verhandl. zool.-bot. Gesellsch. Wien X. 1860, p. 707). 

 Compressed, oblong. Mouth protractile, its cleft oblique and 

 very small. Jaws equal, with small, fixed teeth; palate tooth- 



