BOVICHTHYIDAE 



65 



In addition to the above, Mr Bennett has sent 3 specimens (140-340 mm.) caught 

 by hook in i\ fathoms at Stanley, Falkland Islands, in March, 1934. There are also 

 15 specimens (100-480 mm.) in the British Museum collection, from various localities 

 in the Patagonian region, including the types of the species 1 and the types of C. macro- 

 phthalma. 



Schneider's Batrachus trigloides was based upon the MS. and drawing of Forster 

 (MS. IV, 44). I have seen the drawing, which is a poor pencil sketch, and this represents 



Fig. 29. Cottoperca gobio. x \. 



either a Cottoperca or Notothenia. Since the dorsal rays are given as VII, 22, and the 

 anal rays 21, it would appear to belong to this genus. 



Cottoperca gobio exhibits considerable variation in the size of the eye, height of the 

 fins, and in other features, but after carefully examining and tabulating about 70 

 specimens I am unable to recognize more than one species. 2 Judging from published 

 descriptions and notes, the colour in life is also subject to considerable variation. 



Bovichtus argentinus, MacDonagh. 



Bovichthys diacanthus (non Carmichael), Berg, 1895, Anal. Mus. Nac. B. Aires, iv, p. 65; Berg, 



1897, Anal. Mus. Nac. B. Aires, v, p. 298. 

 " Bovichthys patagonicus" ', (Berg) Regan, 1914, Brit. Antarct. ('Terra Nova') Exped. 1910, 



Zool. 1 (1), p. 26. 

 Bovichthys argentinus, MacDonagh, 1931, Not. Prelim. Mus. La Plata, I, p. 99; MacDonagh, 



1934, Rev. Mus. La Plata, xxxiv, p. 77, pi. viii, fig. 2, pi. ix, pi. x, fig. 1, text-figs. 



Hab. Coast of Argentina and northern Patagonia. 



No specimens of this species were obtained by the expedition, but I am indebted to 

 Mr MacDonagh for a young example (54 mm. in total length) from Puerto Madryn. 

 The holotype (285 mm.) was taken in the Bahia del Fondo, Golfo San Jorge, and others 

 have been recorded from La Plata. This species appears to be very close to B. chilensis, 

 Regan, but seems to have a somewhat wider and more concave interorbital region. 

 It is possible that comparison of specimens of similar size would show the two species 

 to be identical. 



1 The types are two skins, 400 and 420 mm. long, from Port Famine. 



2 Mr E. R. Gunther informs me that he studied a fairly large series of examples in a fresh condition, 

 but was also unable to separate them into more than one species. 



D XVI 9 



