32 THE VOYAGE OF H.M.S. CHALLENGER. 



Division II. (EGOPSIDA, d'Orbigny, 1839. 



Family X. Ommasteephini, Steenstrup, 1861. 



Subfamily Thysanoteuthidje, Keferstein, 1866. 



Thysanoteuthis, Troschel, 1857. 



1. Thysanoteuthis rhombus, Troschel. 



1857. Thysanoteuthis rhomhus, Trosch., Archiv f. Naturgesch., Jahrg. sxiii. Bd. L p. 70, pi. 



iv. fig. 12 ; pi. V. figs. 1-4. 

 1881. „ „ Vigelius, Mitth. Zool. Stat. Neapel, Bd. ii. p. 150. 



2. Thysanoteuthis elegans, Troschel. 



1851. Sepioteuthis sicula {?), V4r., Ceph. medit., p. 75, pi. xxvii. 



1857. Thysanoteidhis elegans, TroscL., Archiv f. Naturgesch., Jalirg. xxiii. Bd. i. p. 74, pL iv. 

 figs. 10, 11. 



Subfamily Ommastrephid^, Gill, 1871. 



Ommastrephes, d'Orbigny, 1835. 

 Sthsnoteuthis, Verrill 



1. Ommastrephes hartramii (Lesueur), d'Orbigny. 



1821. LoUgo Bartramii, Les., Journ. Acad. Nat. Sci. Philad., vol. ii. p. 90, pL vii. 

 1835. Ommastrephes Bartramii, d'Orb., Amer. merid., p. 55. 



1835. „ cylindricus, d'Orb., Cepb. acet., p. 54; Calmars, pL iii. figs. 3, 4. 



1839. „ „ d'Orb., Op. cit, p. 347 ; Calmars, pi. ii.; Ommast., pL ii. 



figs. 11-20. 

 1880. Ommatostrephes Bartramii, Stp., Ommat. Blaekspr., pp. 79, 81, figs.' 



2. Ommastrephes gigas, d'Orbigny. 



1835. Ommastrephes gigas, d'Orb., Am^r. merid., p. 50, pi. iv. 



1839. „ giganteus, d'Orb., Ceph. ac^t., p. 350 ; Calmars, pi. xx. 



3. Ommastrephes pter opus, Steenstrup. 



1822. Loligo todaropterus {?), d. Ch., Mem. stor anim., pi. xcv. {fide Stp.). 



1823. „ Brongnartii (?), Blv., Diet. sci. nat., t. xxvii. p. 142. 



1856. Ommatostrephes pteropiis, Stp., Vid. Meddel. nat. Eoren. Kj0beiihavn, Aar 1855, p. 117. 

 1862. „ „ Stp., Op. cit., Aar 1861, p. 285. 



1880. Sthenoteuthis pter opus, Vll., Ci^ph. N. E. Amer., p. 228, pi. xxvi. 



1881. Ommastrephes ensifer {?), Owen, Trans. Zool. Soc. Ldnd., vol. xi. pt. 5, p. 144, pi. xxviii. 

 1885. Ommatostrephes pteropus, Stp., Notse Teuthol., V. 



' The greater number of the species of Ommastrephes are mentioned, and their systematic positions indicated in this 

 paper, so I have not thought it necessary to repeat the reference in every case. 



