43 



back darker. Scapulary region with black venules. Fins hya- 

 line, caudal with a darker margin. Length to 130 mm. 



(A specimen of Bleeker's collection seen by us). 



Habitat: Java (Batavia, Palabuan Batu !) ; Sumatra (Telok 

 betong, Benkulen, Padang); Pinang; Singapore; Borneo 

 (Sinkawang). 



In sea. 



5. Stolephorus Lacepede. 



(Lacepede. Hist. nat. des Poissons V, 1803, p. 381. Max Weber & L. F. 

 de Beaufort, Verb. Akademie Amsterdam XVII, 1912, p. 21). 



Elongate ; scales thin, very deciduous, not more than 7 pro- 

 minent spined scutes between pectorals and ventrals. Snout 

 prominent. Maxillary may be produced as far as gillopening. 

 Dorsal, generally without small praedorsal spine, situated to- 

 tally or partly before anal, which is short (16 23 rays) and 

 goes 4'/ 2 7 ! /2 times in length. Upper pectoral ray not pro- 

 duced. Teeth on jaws, vomer, palatines, pterygoids and tongue. 

 Eleven to 13 branchiostegal rays. Caudal peduncle at least 

 twice as long as high at its end. A silvery band along 

 the sides. 



Gregarious, planctonic marine fishes of small size, trans- 

 lucent when alive. 



Synopsis of the species. 



I. Origin of anal behind dorsal. 



a. Anal about 6 times in length. Maxillary tapering 

 posteriorly, its end rounded, reaching hindborder 



of praeoperculum S. heteroloims p. 44. 



b. Anal 7 7*/2 times in length. Maxillary truncated 



behind, reaching to mandibulary joint S. zollingeri p. 44. 



II. Origin of anal below dorsal. 



a. Seven spiny abdominal scutes between pectorals 

 and ventrals. Maxillary produced to gillopening. 



Anal 55 1 /3 i n length S. commersonii p. 45 



b. 4 5 spiny abdominal scutes between pectorals 

 and ventrals. 



1. Maxillary reaching to frontborder of praeoper- 

 culum. Anal 5% 6 in length S. indicus p. 46 



2. Maxillary reaching gillopening, anal 4^2 5 in 



length S. tri p. 47. 



