225 



in front of which a nasal barbel. A maxillary barbel near the 

 end of the upperlip, a mandibulary barbel below the corner 

 of the mouth, two mental barbels between the mandibulary 

 barbels. Eye not covered by skin. First dorsal short, behind 

 origin of pectorals, with few rays and a strong spine, denticu- 

 lated at both edges. Origin of second dorsal before or above 

 origin of ventrals. It is many-rayed, similar to anal and both are 

 confluent with the caudal. Ventrals with 12 13 rays. Pectorals 

 with a denticulated spine. Maxillary teeth in two rhombic 

 patches with the lateral edges rounded, conical with rounded 

 tops. The median ones the strongest. Inframaxillary ones in 

 two approximated semicrescentic patches, the anterior row 

 strong and conical, the posterior ones molars, mesially in 

 4 rows. Vomerine teeth molar, in a crescentic patch, in 

 the middle in about 4 rows, the hindermost the strongest. 

 22 gillrakers on the entire first arch. The second and third 

 branchial arches with a series of long cartilaginous processes, 

 covering the base of the gill-laminae on the sides facing each 

 other. Gillmembranes confluent in the middle, only the anterior 

 portion of their confluent part connected with the isthmus. 

 Branchiostegals 9 n. A very conspicuous dendretic organ 

 between anus and anal. 



i. Paraplotosus albilabris (C. V.). 



Plotosus albilabris Cuvier & Valenciennes, Hist. Nat. Poiss. XV. 1840, p. 427. 

 Plotosus macrophtkalmus Bleeker, Verb. Bat. Gen. XXI. I. 1847, Silur. Batav. 



consp. p. 179. 

 Floats albilabris Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 319. - 



Atl. Ichth. II. 1862, p. 99. 

 Copidoglanis albilabris Giinther, Cat. Brit. Mus. V. 1864, p. 27. 



B. 9 II; I. D. I. 4 5; 2. D. IOO IIO; A. 90 100; 

 P. i. 12 13; V. 12 13; C. circa 10. 



Height 7 8, head circa 6, anteriorly depressed, posteriorly 

 rather high, sloping with little convexity to the snout. Eye 

 4 5 ? more than twice in snout, i*/ 2 times in interorbital 

 space, which is concave. Nasal barbels reaching to hindborder 

 of operculum or farther, maxillary ones shorter. Mandibu- 

 lary barbels much longer than mental ones and almost or 

 quite reaching base of pectorals. Height of first dorsal about 

 2 / 3 length of head, its spine as long as postorbital part of 



INDO-AUSTRALIAN FISHES II. 15 



