254 



MR C. TATE REGAN ON THE 



3. Bovichthys, Cuv. 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 Bovichthys and Trematomus, respectively the iiortliernmost and southernmost Nototheniiform genera. 



B — Bovichthys. 1. B. variegatus ; 2. B. angustifrons ; 3. B. diacanthus ; 4. B. chilcnsis ; 4a. B. sp. ; 5. B. veneris; 



6. B. dccijncns ; 7. B. j^srjchrolutes ; 8. B. roseopictus. 



T = 2'reviaiomus. 1. T.nevmesii; 2. T. nicolai ; 3. T. borchgrcvinkii ; 4. T. br achy soma ; 5. T.vicariiis ; 6. T. bernacchii ; 



7. T.hansoni; 8. T. loennbergii. 



Note that in Bovichthys none, in I'rematomus most, of tlie 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. 



