6C0 Mr. C. T. Eegan on a new Fish. 



the diameter of wliicli is 4|-5f times in the length of head, 

 inteiorbital width 7-10 times. Maxillary extending to the 

 vertical from posterior margin of eye, the width of its distal 

 extremity about | the diameter of eye. Gill-rakers equal in 

 length to \-'i the diameter of eye, 4 on lower part of anterior 

 arch, succeeded by 4-6 rudiments. Dorsal commencing 

 above middle of pectoral ; pectoral about | the length of head ; 

 longest ventral ray nearly ^ the length of head. Scales 

 present in the ycung on body and cheeks, none on opercles or 

 upper suiface of head ; about 10 rows between anterior dorsal 

 rays and lateral line; in the adult body naked, with rows of 

 pits replacing scales. Yellowish, marbled with brown ; 

 vertical fins with a continuous broad brown longitudinal 

 band and light margins. 



Description based on three examples from Tasmania, 

 Dunedin, and Stewart Island respectively, the largest 370 

 millim. in total length. 



In all the other species of this genus the mouth extends to 

 well beyond the vertical from the posterior margin of the 

 eye. G. ausiraUs, Ca&teln., and G. iigerinus, Klunz., should 

 be included in the synonymy of G. Uacodes, Forst. In this 

 i-pecies the depth ot body is contained 7-8 times in the total 

 length, the diameter of the eye 5-6 times in the length of 

 the head, and the interorbital width about 8 times. There 

 are 12-15 rows of scales between the dorsal fin and the 

 lateral line, and the body is marbled with brownish. It is 

 known from the coasts of Australia and New Zealand. 



G. copensis, Smith, from the Cape of Good Hope, is 

 closely allied to G. Uacodes, but appears to have a much 

 smaller eye; only stufted specimens have been available for 

 examination. 



G. chilensis, Guichenot, from Chili, has a slightly smaller 

 eye than G. Uacodes ^ from which it also diflers in colour, the 

 back and sides being blackish, with a few irregular white 

 spots. The British Museum possesses only one example, 

 580 millim. in total length. 



G. macidatiis, Tschudi, has been confused with G. Uacodes, 

 from which it is more easily distinguished than any other 

 species. The short body (depth 6 times in the total length), 

 small eye (diameter nearly 8 times in the length of head), 

 broad interorbital space (width about 5^ times in the length 

 of head), and few scales (8 or 9 rows between anterior dorsal 

 rays and lateral line) at once distinguish this species. The 

 British Museum possesses one example from Ciiili, 290 millim. 

 in length, which agrees very well with Tschudi's description 

 and figure, this latter being excellent. 



