4. HELOSTOllA. 377 



e-f. Adult. Cej'lon. From the Collection of Messrs. von Schlagin- 



tweit. 

 g-7i. Half-grown. China. From Dr. Cantor's Collection. 

 i. Adult. From the Collection of the Zoological Society. 



The Ceylonese Anabas has two scales more in a transverse line 

 ninning from the first anal spine obliquely upwards and forwards, 

 than A. olir/olepis, Bleek., from Borneo, and therefore it is, for the 

 present, doubtful whether both are identical or not. They agree in 

 other respects, especially in the number of the scales of the lateral 

 line. The largest specimen examined is four inches long ; and on 

 comparison with specimens of A. scandens of the same size, I find the 

 same number of laminae, but the first or inner lamina has its lower 

 lobe considerably less developed. There is no young individual in 

 the Collection. 



4. Anabas microcephalus. 



Bheh. in Act. Soc. Sc. Indo-Nederl. ii., Amhoina, p. 58. 

 D. '-§. A. i^. L. lat. 31. L. transv. 14-15. 



The height of the body is contained fom* times in the total length, 

 the length of the head four times and a half to four times and three- 

 fifths. The maxillary extends only to below the anterior margin of 

 the orbit. The prseorbital and the opercles are denticulated ; the 

 teeth of the angle of the operculum and suboperculum being pro- 

 duced. Greenish-olive. (BL) 



Amboyna. 



4. HELOSTOMA. 



Helostoma, (K ^ v. H.) Cm. 8,- Val. vii. p. 341. 



Body compressed, rather elevated ; operculum without spines or 

 serrature ; cleft of the mouth very small, transverse, not extending 

 to the orbit ; eye on the same level with the angle of the mouth. 

 Minute moveable teeth on the hps ; none on the palate. Dorsal and 

 anal spines numerous (15-17) ; ventral fins composed of one spine 

 and five rays ; none of the fins elongate. Lateral line interrupted. 

 Branchial arches without toothed tubercles, lined with a soft vas- 

 cular membrane. Air-bladder simple ; pseudobranchise none (glan- 

 dular). Pyloric appendages in small number ; intestine with many 

 circumvolutions, long. 



Fresh waters of Java. 



1. Helostoma temminckii 



flelostoma temminckii, (K. i,- r. H.) Cuv. Sf Val. vii. p. 342. pi. 194; 

 Bleek. Verliand. Batav. Genootsch. xxiii., Lahyr. p. 9. 



tanibakkan, Bleek. Topogr. Batav. 



oligacanthum, Bleek. Topoyr. Batav. 



D. ^j. A. j^g. L. lat. 44. L. transv. 8/16. Cfec. pylor. 2. 



Vert. 14/16. 

 The height of the body is contained twice and two-thirds in the 



