Dr. A. Giinther on Australian Reptiles and Fishes. 59 



proportions of parts of the head ; but from an examination of 

 eight examples in the British Museum^ I cannot convince my- 

 self that these variations represent distinct species. 



Swan River, King George^s Sound, New South Wales (Kreflft, 

 5), Sydney (Schiitte). 



17. Upeneus porosus {C&Y.). 

 D. 8 I |. A. 7. L. lat. 30. 



Distinguished by the elevated anterior part of the body, the 

 greatest depth of which is not more than one-third of the total 

 length (without caudal). Upper profile of the head and neck 

 describing a fourth of a nearly regular circle. Snout elevated, 

 not quite twice as long as the eye. Barbels extending to the 

 vertical from the hind margin of the opercle. The dorsal fin 

 commences above the root of the pectoral ; its spines are flexible, 

 the longest being two-thirds the height of the body. Tubes of 

 the lateral line with a cluster of short branchlets. Parts above 

 the lateral line clouded with darker. Spinous dorsal blackish. 



Sydney (Krefft), Melbourne, Van Diemeu^s Land, New 

 Zealand. 



18. Upeneus signatus, sp. n. 



Allied to U. barberinus, but with the head much deeper, the 

 snout much shorter, and larger caudal spot. 



D. 8 1 i A. -i. L. lat. 30-31. 



The height of the body is contained thrice or thrice and one-third 

 in the total length (without caudal). Head not much longer than 

 deep ; snout only twice as long as the diameter of the eye. 

 Barbels extending to the hind margin of the prseoperculum. 

 Dorsal spines slightly flexible at the top. Tubes of the lateral 

 line with rather long lateral branchlets in small number. Colo- 

 ration as in U. barberinus, but with the black caudal spot large, 

 square, extending over the back of the tail ; a whitish blotch in 

 front of it. 



Port Jackson (Krefi't, 12). 0""18 long. 



19. Lethrinus Richardsonii (Gthr.). 

 China, Cape York. 



20. Girella tricuspidata (Q. & G.) . 

 New South Wales. 



2 1 . Chilodactylns nigricans ( Rich . ) . 

 D.i^-. A.^. L. lat. 48-53. 



King George's Sound, Victoria. 



