PART II. FLATFISHES 



INTRODUCTION 



THE collection of Flatfishes made by the R.R.S. 'Discovery' and R.R.S. 'William 

 Scoresby' includes examples of nine species, and, although of small size, is of con- 

 siderable interest. It includes a single specimen of a genus and species apparently new 

 to science. With the sole exception of one specimen of Heteromycteris capensis, the 

 collection was made either in the Magellan-Falkland Islands region or off the coast of 

 West Africa. 



My thanks are due to the members of the Discovery Committee for permission to 

 examine this material, and are gratefully tendered. The figure oi Achiropsetta tricholepis 

 has been drawn by Lieut. -Col. W. P. C. Tenison, D.S.O. 



SYSTEMATIC ACCOUNT 



Order HETEROSOMATA 



Family BOTHIDAE 



Genus Thysanopsetta, Giinther 



Giinther, 1880, Shore Fishes 'Challenger' , p. 22. 



Thysanopsetta naresi, Giinther. 



Giinther, 1880, t.c. p. 22, pi. xi, fig. A. 



St. 51. 4. V. 26. Off Eddystone Rock, East Falkland Islands. From 7 miles N 50° E to 7-6 miles 

 N 63° Eof Eddystone Rock. Large otter trawl, 105-115 m.: fine sand. 2 specimens, 100-127 mm. 



St. WS 77. 12. iii. 27. 51° 01' 00" S, 66° 31' 30" W. Commercial otter trawl, uo-ii3m.: 

 coarse dark sand. 4 specimens, 38-115 mm. 



St. WS 90. 7. iv. 27. '13 miles N 83° E of Cape Virgins Light, Argentine Republic. Commercial 

 otter trawl, 82-81 m.: fine dark sand. 5 specimens, 63-132 mm. 



St. WS91. 8. iv. 27. 52° 53' 4s" S, 64° 37' 30" W. Commercial otter trawl, 191-205 m.: 

 fine dark sand and shells, i specimen, 44 mm. 



St. WS 92. 8.iv. 27. 51° 58' 30" S, 65° 01' 00" W. Commercial otter trawl, 145-143 m.: 

 fine dark sand and stones. 2 specimens, 41-61 mm. 



St. WS 96. 17. iv. 27. 48° 00' 45" S, 64° 58' 00" W. Commercial otter trawl, 96 m.: fine dark 

 sand. 35 specimens, 34-80 mm. [Taken from stomach of Merlucctus.] 



St. WS97. 18. iv. 27. 49° 00' 30" S, 61° 58' 00" W. Commercial otter trawl, 146-145 m.: 

 sand, gravel and stones. 1 specimen, 83 mm. 



St. WS 216. I . vi. 28. 47° 37' 00" S, 60° 50' 00" W. Net attached to back of trawl, 219-133 m. : 

 fine sand, i specimen, 142 mm. 



