336 



MR C. TATE REGAN ON THE 



3. Bovichthys, Guv. and Val., 1831. 

 Hist. Nat. Poiss., viii. p. 486, 



Differs from Cottoperca in the naked head and body, the abnormal operculum, 

 which has a very strong spine and a superior process which articulates with the post- 

 temporal, and in the enlarged and partly free posterior anal rays. 



FIG. 5. Distribution of Bwickthys and Trematamus, respectively the nortberumost and southernmost Nototheniiform genera. 



E=Sovichthys. 1. B. variegatus ; 2. B. angustifrons ; 3. B. diacanthus; 4. B. chilensis ; 4. B. sp. ; 5. B.veneris; 



6. B. decipicns ; 7. B. psychrolutes 8. B. roseopictus. 



T= Trematomus. 1. T. newnesii ; 2. T. nicolai ; 3. T. borchgrevinkii ; 4. T.lrachysoma ; 5. T.vicarius; 6. T. bernmchii ; 



7. T. hausoni ; 8. T. loennbcrgii. 



Note that in Borirhthys none, in Tremntomus most, of the species appear to be circumpolar. 



Chile ; Argentina ; Tristan da Cunha and Gough Island ; St Paul ; S.E. Australia 

 and Tasmania ; New Zealand and neighbouring islands. 



(ROY. soc. EDIN. TRANS., VOL. XLIX., 254.) 



