26 SILUKIDiE. 



1. Copidoglanis tandanus. 



Plotosus tandanus, Mitchell, Three lUxpe/Hfions into the Interior of East- 

 ern Amtraliu, 2nd edit. i. p. 95. pi. 6. fig. 2 (bad). 



B. 9. ID. 1/6. 2D. + C. + A. 142. P. 1/10. V. 12. 



Head and body compressed ; the height of the body is not much 

 less tlian the length of the head, which is a little more than one- 

 fifth of the total. Head as high as broad, its greatest width being 

 three-fifths of its length ; the diameter of the eye is contained five 

 times and a half in the length of the head, twice and a half in that 

 of the snout, and twice in the Avidth of the interorbital space. The 

 nasal barbels are a little shorter than those of the maxillary, and 

 extend to the middle of the eye. The band of teeth of each inter- 

 maxillary bone is twice as broad as long ; the vomerine teeth are 

 arranged in a semicircular disk ; those of the mandibularies form a 

 band which is broadest in the middle ; all the teeth of conical form 

 have a brown tip. The first dorsal fin is nearly as high as the body, 

 and its spine more than half as long as the head. Pectoral spine as 

 strong as, but much shorter than, that of the dorsal fin. Uniform 

 blackish brown above. 



Rivers of Eastern Australia. 



a. Fine specimen. New South Wales, From Mr. Schiitte's Col- 



lection. 



b. Adult : stuffed. Australia. Presented by the Earl of Derby. 



2. Copidoglanis obscurus. 



ID. 1/6. 2D. + C.-I-A. 226. P. 1/14. V. 15-16. 



Head not much compressed, but nearly as high as broad, its width 

 being two-thirds of its length. The height of the body is contained 

 eight times and a half in the total length, the length of the head six 

 times and a third ; the diameter of the eye is one-sixth of the height, 

 two-fifths of that of the snout, and three-fifths of the width of the 

 interorbital space. The nasal barbels extend to behind the eye, those 

 of the maxillary to the gUl-opening. Each intermaxillary with a 

 triangular band of teeth which is rather broader than long ; vomerine 

 band crescent-shaped. AU the teeth are white. The first dorsal is 

 placed immediately behind the nape of the neck, and as high as the 

 body ; its spine is more than half as long as the head. Pectoral spine 

 as strong as, but shorter than, that of the dorsal fin. Brown ; fins 

 with black margin. 



Probably from Australia. 

 a. Seven inches long. From the Collection of the Zoological Society. 

 ? 6. Young : dried. Freycinet's Harbour. Voyage of the ' Herald.' 



3. Copidoglanis albilabris. 



Plotosus albilabris, Cuv. SfVal. xv. p. 427; Bk'ek. Nat. Tydschr. Nederl. 

 Ind. iii. p. 70, Prodr. Silur. p. 319, and Atl, Ichth. Silur. p. 99. tab. 96. 

 fif?- !• 



