6 DISCOVERY REPORTS 



In the descriptive section, measurements are given of the standard length of the fish dissected, the 

 major and minor axes of the swimbladder (which approaches an ellipsoid in form) and the length of 

 the retia mirabilia. Clearly, the dimensions of the sac in a preserved fish will be smaller than those 

 occurring in the living state. However, in most specimens the swimbladder was well expanded. 

 Where conditions were otherwise, this has been noted. 



SURVEY OF STRUCTURE 



Classification of fishes considered in this report 1 



Order ISOSPONDYLI 



Suborder STOMIATOIDEA (p. 7) 



Family Gonostomatidae : Vinciguerria attenuata Cocco (p. 7); V. nimbaria Jordan & Williams 

 (p. 9); PolHchthys mauli (Poll) (p. 9); Bonapartia pedaliota, Goode & Bean (p. 11); Maiirolicas 

 muelleri (Gmelin) (p. 11); Gonostoma denudatum Rafinesque (p. 13); G. elongatum Giinther (p. 13); 

 G. bathyphilum, Vaillant (p. 13); Photicthys argenteus Hutton (p. 13) Ichthyococcus ovatus (Cocco) 

 (p. 14); Cyclothone signata Garman (p. 15); C. braueri Jespersen & Taning (p. 16); C. Uvida Brauer 

 (p. 18); C. microdon (Giinther) (p. 19); C. acclinidens Garman (p. 19). 



Family Sternoptychidae : Argyropelecus aculeatus Cuvier & Valenciennes (p. 19); A. olfersii 

 Cuvier (p. 20); A. sladeni Regan (p. 21); A. hemigymnus Cocco (p. 21); Sternoptyx diaphana Hermann 

 (p. 21); Polyipnus laternatus Garman (p. 22). 



Family Astronesthidae : Astronesthes niger Richardson (p. 23); A. lucifer Gilbert (p. 23); A. 

 gemmifer Goode & Bean (p. 23); A. similis Parr (p. 25); Borostomias antarcticus (Lonnberg) (p. 26); 

 Diplolychnus mononema Regan & Trewavas (p. 26). 



Family Stomiatidae : Stomias affinis Giinther (p. 26); S. colubrinus Garman (p. 27); S. ferox 

 Reinhardt (p. 27). 



Family Melanostomiatidae: Bathophilns metallicns Welsh (p. 27); B. pawned Parr (p. 27); 

 Eustomias obscurus Vaillant (p. 27); Echiostoma tanneri (Gill) (p. 27). 



Family Chauliodontidae: Chauliodus sloanei Schneider and C. barbatus Garman (p. 27). 



Family Idiacanthidae: Idiacanthus fasciola Peters (p. 27). 



Family Malacosteidae : Malacosteus niger Ayres and Photostomias guerni Collett (p. 27). 



Suborder SALMONOIDEA (p. 27) 



Family Opisthoproctidae : Opisthoproctus soleatus Vaillant (p. 27); O. grimaldii Zugmayer (p. 28); 

 Winteria telescopa Brauer (p. 28); Macropinna microstoma Chapman* (p. 28). 



Family Microstomidae: Xenophthalmichthys danae Regan* (p. 28). 



Family Bathylagidae : Bathylagus benedicti Goode & Bean* (p. 29) ; B. glacialis Lonnberg* (p. 29) ; 

 B. antarcticus Giinther (p. 29); B. argyrogaster Norman (p. 29). 



Suborder CLUPEOIDEA (p. 30) 

 Family Alepocephalidae : Bathytroctes rostratus Giinther* (p. 30); Xenodermichthys copei (Gill) 



(p. 30); Searsia koefoedi Parr (p. 30). 



Order INIOMI 



Suborder MYCTOPHOIDEA (p. 30) 

 Family Myctophidae: Myctophum punctatum Rafinesque (p. 30); Diaphus rafinesquei (Cocco) 

 (p. 30); Electrona tenisoni (Norman) (p. 32); E. rissoi (Cocco) (p. 32); E. antarctica (Giinther) (p. 32); 



1 Species or groups marked with an asterisk were not examined by the author. 



