1905.] NATURAL SCIENCES OF PHILADELPHIA. 469 



its length; snout 3; eye 3; width of mouth 2\; interorl)ital space 2; 

 depth at base of caudal 2^; length of pectoral 4 in head and trunks- 

 upper caudal lobe 4:^-jj. Each ramus of mandible with a short incon- 

 spicuous barbel. Rakers rather slender, long and numerous. Pec- 

 toral and margin of caudal tinted with dusky. A dark or dusky post- 

 opercular blotch. One example 5f inches long, 



20. Mioronema phalaoronotus (Bleeker). 



Head 5i and 5i; depth 5| and 5|; A. 85 and 87; P. I, 15, and I, 14; 

 V. I, 6, and i, 7; width of head If and If; depth of head at posterior 

 margin of eye 2|- and 2|; pectoral 1^ and 1^; base of caudal 4^ and 3f ; 

 length of ventral 3 and 3^^ ; width of mouth at corners 2 and 2^ ; 

 length of snout 2| and 3 in head, from tip of upper jaw; maxillary 2f 

 and 2f ; interorbital space 2j and 2^; orbit 5-2- and 5. Two examples, 

 larger 12 inches long. Baram river. 



Micronema micronema (Bleeker),*^ Java, is closely related, and prob- 

 ably differs in the dark spot at the base of the caudal. The small 

 example described as Cryptopterus micronema by Prof. Vaillant^*' cannot 

 belong to this species on account of the exceptionally small number of 

 anal rays. Bleeker's figvn-e of Micronema typus^^ is, however, identical 

 with the example before me. 



BAGRIN.E." 



21. Hemibagrus nemurus (Valenciennes). 



Head 3^; depth 4J; D. I, 7; A. iv, 9; width of head U in its length; 

 eye 2 in interorbital space; width of mouth 2| in head. Depressed 

 dorsal reaching adipose fin, membranes between rays not deeply incised, 

 and rays themselves expanded. Ventral inserted nearly as far forward 

 as opposite middle of base of dorsal, and when depressed reaching 

 origin of anal. No dark humeral blotch. liength 12 inches. Baram 

 river. Male. Harrison and Hiller. 



Another example 18f inches long, with same data, evidently a 



^' Silurus micronemus Bleeker, Verh. Bat. Genoot. (Sil. Bat. Con.), XXI, 1846, 

 p. — . [Not consulted.] 



20 Notes Leyd. Mus., XXIV. November, 1902, p. 48. 



" Atlas Ichth., II, 1863, p. 91, PL 45 (93), fig. 1. 



22 Bagroides melapterus Bleeker. 



Head 4; depth 4; D. I, 7; A. v, 11; width of head 1| in its length; snout 3; 

 eye 5f ; interorbital space 4. Lateral line wdth a series of minute cutaneous 

 filaments, most distinct anteriorly. Coloration not exactly agreeing with 

 Bleeker's figure. More white on posterior portion of adipose dorsal, and distal 

 portions of dorsal, anal, pectoral and ventral rays darker or deeper than body- 

 color. A brown streak from upper edge of snout horizontally below eye back 

 across cheek, also side of head with more brown. Upper lobe of caudal a little 

 more forked than lower. Length 6y\ inches. One example from the Paris Museum 

 in Acad. Nat. Sci. Phila. 



