33 discovery reports 



Occurrence : 



10. x. 25. 41 37' 15" N., 12° 36' 20" W. North-east of Azores, 0-900 m., 1 juv. 92 mm. 



St. 76. 5. vi. 26 (day). 39 50' 30" S., 36 23' 00" W., i50o(-o) m., 1 juv. 38 mm. 



St. 81. 18. vi. 26 (day). 32° 45' 00" S., 8° 47' 00" W. Mid-Atlantic between Cape Town and Monte Video, 



65o(-o) m., 1 juv. 38 mm. 

 St. 86. 24. vi. 26 (day). 33 25' 00" S., 6° 31' 00" E. West of Cape Town, iooo(-o) m., 1 <$, 96 mm. (eye to telson). 



('Deep scarlet red throughout, palest on scales, uropods and protopodites of pleopods'), 1 imm. $, 60 mm., 



1 juv. 50 mm. 

 St. 100B. 3. x. 26 (night). West of Cape Town, 1000-900 m., 1 $, 132 mm. (from eye to telson, rostrum broken). 

 St. 100C. 4. x. 26 (day). West of Cape Town, 2500 (-0) m., 1 juv. 71 mm. 

 St. 101. 15. x. 26 (night). West of Cape Town, 2 hauls: (i) 350-400 (-0) m., 1 juv. <$, 80 mm. (eye to telson) 1 juv. $, 



73 mm., 1 <J, 148 mm. (eye to telson); (ii) 2580-2480 m., 1 juv. 49 mm. 

 St. 107. 4. xi. 26 (day). South-south-west of Cape Town, 950-850 m., 1 imm. $, 70 mm. (eye to telson). 

 St. 256. 23. vi. 27 (day). West of Cape Town, noo-85o(-o) m., 1 juv. 41 mm. 

 St. 257. 24. vi. 27 (night). West of Cape Town, 25o(-o) m., 1 juv. 57 mm. 

 St. 285. 16. viii. 27 (night). Gulf of Guinea, i75-i25(-o) m., 1 juv. $, 84 mm., 5 juv. 37-74 mm. 

 St. 288. 21. viii. 27 (night), South-south-west of Monrovia, 25o(-o) m., 5 juv. 40-82 mm., 2 too damaged to 



measure. 

 St. 289. 24. viii. 27 (night). South-west of Monrovia, 225~i25(-o) m., 2 juv. 41 mm. 

 St. 296. 26. viii. 27 (night). South-south-west of Cape Verde, 50o-45o(-o) m., 1 cJ, 96 mm. (eye to telson). 

 St. 407. 12. vi. 30 (day). South-west of Cape Town, 950-800 m., 6 juv. 65-98 mm. 

 St. 440. 21. ix. 30 (dusk). East of Durban, 1000-0 m., 1 <$, 103 mm., 1 juv. 68 mm. 

 St. 691. 8. v. 31 (night). Equator, south-west of Cape Verde, 400-0 m., 1 juv. 78 mm. 

 St. 1567. 10. iv. 35 (night). Between South Africa and Prince Edward Is., 1350-0 m., 1 juv. 35 mm. 

 St. 1571. 21. iv. 35 (night). South-west of Madagascar, 1400-1000 m., 1 juv. 30 mm. (eye to telson). 

 St. 1573. 22. iv. 35 (night). Mozambique Channel, 800-0 m., 1 3, 91 mm., 1 juv. (eye to telson), 20 mm. 

 St. 1575. 24. iv. 35 (night). Mozambique Channel. Two hauls: (i) 400-0 m., 2 juv. 71 mm. and 38 mm.; (ii) 800- 



550 m., 2 $$, 146 mm. and 156 mm. 

 St. 1576. 25. iv. 35 (night). Between Madagascar and Mozambique, 400-0 m., 1 juv. 31 mm. (eye to telson). 

 St. 1578. 26. iv. 35 (night). Midway between Comoro Is. and Cape Delgado, 500-0 m., 1 juv., 52 mm. (eye to 



telson). 

 St. 1580. 27. iv. 35 (night). North of Comoro Is., 450-0 m., 3 <$<$, 94-110 mm. 

 St. 1582. 29. iv. 35 (night). East of Zanzibar, i90o-i85o(-o) m., 2 juv., 50 mm., 41 mm. 

 St. 1586. 2. v. 35 (night). North-west of Seychelles, 550-0 m., 1 juv. 49 mm. 

 St. 1590. 13. x. 35 (night). South of Canary Is., 400-320 m., 1 juv. 84 mm. 

 St. 1741. 18. iv. 36 (day). Indian Ocean, west of Perth, 900-0 m., 2 juv. 37 mm. 

 St. 1761. 3. v. 36 (day). East of East London, 1800-650 m., 1 juv. 37 mm. (Colour note, 'Deep orange 



brown'.) 

 St. 1763. 5. v. 36 (night). South-east of Durban, 2000-0 m., 1 $, 173 mm. 



St. 1764. 6. v. 36 (night). South-east of Durban, 1000-0 m., 1 $, 124 mm., with very small oostegites. 

 St. 1770. 2. v. 26 (night). West of Cape Town, 340-210 m., 1 juv. 70 mm. (deep brilliant scarlet throughout), 



1 juv. 38 mm. (orange brown). 



Remarks. The Discovery collection contains over sixty specimens of Gnathophausia ingens, 

 ranging in length from 34 to 173 mm., measured from the tip of the rostrum to the apex of the telson. 

 A complete series such as this shows the gradual changes which take place with growth and demon- 

 strates clearly that only one species is involved. Not having access to such a series, workers in the past 

 have founded new species on specimens which have subsequently been proved to be young forms of 

 G. ingens. Ortmann ( 1 906, pp. 27-52) was the first to show that several species of Gnathophausia had been 

 founded in error in this way. It is now generally accepted that G. calcarata G. O. Sars (18850, p. 35), 

 G. bengalensis Wood-Mason and Alcock (1891 b, p. 269) and G. dorymorpha Illig (19066, p. 227) are all 

 founded on different growth stages of G. ingens and if any further evidence were needed to prove this 



