AGONIDAE 129 



AGONIDAE 



Agonopsis chiloensis (Jenyns). "Aayakich." 



Aspidophorus chiloensis, Jenyns, 1842, Zool. 'Beagle', Fish., p. 30, pi. vii, fig. 1; Guichenot, 



1848-9, in Gay, Hist. Chile, Zool. 11, p. 174. 

 Aspidophorus niger, Kroyer, 1844, Naturhist. Tidsskrift [2] 1 (3), p. 238. 

 Agonus niger, Gunther, i860, Cat. Fish., 11, p. 215. 



Agonus chiloensis, Gunther, i860, t.c, p. 216; Gunther, 1880, Shore Fish. 'Challenger', p. 21; 

 Vaillant, 1888, Mtr. Set. Cap Horn, vi, Zool., Poiss., p. 31; Lahille, 1913, Revist. Chil, 

 xvii, p. 179, pi. xv. 

 Agonopsis chiloensis, Gill, 1862, Proc. Acad. N.S. Philad. (1861), p. 167; Jordan and Evermann, 



1898, Bull. U.S. Nat. Mus., xlvii (2), p. 2069; Delfin, 1901, Cat. Peces Chile, p. 81. 

 Agonopsis asperoculis, Thompson, 1916, Proc. U.S. Nat. Mus., l, p. 409, pi. ii, fig. 1. 

 St. WS 71. 23. ii. 27. 6 miles N 6o° E of Cape Pembroke Light, East Falkland Islands. Com- 

 mercial otter trawl, 82 m.: 20 specimens, 95-120 mm. 



St. WS81. 19. iii. 27. 8 miles N n° W of North Island, West Falkland Islands. Commercial 

 otter trawl, 81-82 m.: 2 specimens, 60, 115 mm. 



St. WS 83. 24. iii. 27. 14 miles S 64 W of George Island, East Falkland Islands. Commercial 

 otter trawl, 137-139 m.: 4 specimens, 105-125 mm. 



St. WS 93. 9. iv. 27. 7 miles S 8o° W of Beaver Island, West Falkland Islands. Commercial 

 otter trawl, 133-130 m.: 1 specimen, 115 mm. 



St. WS 95. 17. iv. 27. 48" 58' 15" S, 64 45' W. Commercial otter trawl, 109-108 m. 14 specimens, 

 140-150 mm. 



St. WS 216. 1. vi. 28. 47 37' S, 6o° 50' W. Net (7 mm. mesh) attached to back of trawl, 219- 

 133 m.: 1 specimen, 35 mm. 



St. WS 219. 3. vi. 28. 47 06' S, 62' 12' W. Net (7 mm. mesh) attached to back of trawl, 11 6- 

 114 m.: 3 specimens, 33-50 mm. 



St. WS221. 4. vi. 28. 48°23'S, 65 10' W. Tow-net attached to back of trawl, 76-91 m.: 

 1 specimen, 40 mm. 



St. WS 243. 17. vii. 28. 51 06' S, 64 30' W. Net (7 mm. mesh) attached to back of trawl, 

 144-141 m.: 1 specimen, 140 mm. 



St. WS 583. 2. v. 31. 53" 39'S, 70 54' 30" W. Small beam trawl, 14-78 m.: 5 specimens, 

 108-130 mm. 



St. WS 749. 18. ix. 31. 52° 39' 30" S, 69 53' 30" W. Rectangular net, 40 m. : 1 specimen, 82 mm. 

 St. WS754. 20 ix. 31. 5i°09'3o"S, 58°54'W. Rectangular net, mm.: 3 specimens, 60- 

 66 mm. 



St. WS 767. 19. x. 31. 45 12' S, 61 41' W. Rectangular net, 98 m.: 1 specimen, 135 mm. 

 St. WS 787. 7. xii. 31. 48 44' S, 65 24' 30" W. Net (7 mm. mesh) attached to back of trawl, 

 106-110 m.: 3 specimens, 1 15-143 mm. 



St. WS 836. 3. ii. 32. 53 05' 30" S, 67 38' W. Small beam trawl, 64 m.: 1 specimen, 80 mm. 



Hab. Argentina; Patagonian-Falklands region; Straits of Magellan; Chile. 



In addition to the above, there are 9 specimens (37-190 mm.) in the British Museum 

 collection, including the types of the species (62 and 63 mm.) from the Chiloe Islands. 



A. asperoculis, Thompson, based upon a single specimen (60 mm.) from just south 

 of the Rio Plata, is said to differ from A. chiloensis in "the much more slender tail; 

 the wider spacing of the dorsals, which are five instead of two scales apart ; the presence 

 of a series of small spines on the upper surface of the eyeball ; the slightly larger eye ; 

 the very much smaller barbels on the lower jaw ; and the position of the vent nearly 

 opposite mid-length of the ventrals". After examining a series of some 55 specimens, 



