421 



Syn.: 1859. Stego cephalus, Brnzelius, Skand. Amphip. Gamm. p. 38. 



1862. — Spence Bate, Catal. Amphip. Crust. Brit. Mus. p. 63. 



1865. — Lilljeborg, On the Lysianassa magellanica. p. 18. 



— — Goés, Crust. amphip. mans Spetsb. p. 5. 

 1870. — A. Boeck, Crust. amphip. bor. et aret. p. 47. 



Type: Cancer ampulla, Phipps. 



Mandibulæ in apice dentibus multis, niagnis armatæ; mala intoriore mandi- 

 bulæ sinistræ item armata. 



Maxillæ Imi paris palpo brevi, angnsto, larliculato, ad finem laminæ ex- 

 terioris porrecto. 



Maxillæ 2di paris lamina exteriore angustissima, eadem longitudine aul lon- 

 giore qvani interlore. 



Appendix caudalis mediocris longitudinis, in apice incisa. 



I Krøyers Diagnose for denne Slægt anføres: „Mandibulæ palpo instructæ bre- 

 vissimo, crasso, uniarticulato." Dette, der ogsaa anføres af Bruzelius, beror paa en 

 Feiltagelse, hvilket allerede Spence Bate i 1862 har oplyst. Heller ikke er det fuld- 

 kommen rigtigt, naar han siger: „Pedes qvinti paris pedibus tertii qvartiqve paris strue- 

 tura, et directione similes." Dana anfører i sin Slægtskarakter: „Epimeræ 4tæ max- 

 imæ, 5tis parvis. Antennæ superiores appendiculatæ. Pedes Imi 2di manibus caren- 

 tes. Pedes 5ti 3tii 4tiqve directione similes," 



STEGOCEPHALUS AMPULLA, Phipps, 1774. 



Cancer ampulla, Phipps, Voy. toward the North Pole 1774. p. 191. tab. 12. fig. 2. 

 — Gammarellus ampulla, Herbst, Krabben u. Krebse. 1804. II. p. 156. pl. 



35. fig. 1. 

 ^Gammarus ampulla, Fabricius, Entom. syst. 1794. II. p. 515. 



— Latreille, Hist. Nat. d. Crust. VI. p. 318. 



— — Sabine, Parrys first voy. (Suppl.) 1824. p. 229. 



— — Eoss, App. to Parrys Polar voy. 1828. p. 20. 



— Owen, App. to J. Ross's sec. voy. 1834. XXVIII. 

 Lysianassa ampulla, Milne-Edwards, Hist. d. Crust. 1840. III. p. 22. 

 Stegocephalus inflatus, Krøyer, Nat. Tidsskr. 1842. 1. R. IV. p. 150. 1845. 2. R. 



I. p. 522. Voy. en Scand. 1840. pl. 20. fig. 2. 



— — White, Sutherl. Journ. of a voy. in Baffins Bay 1852. p. 226. 



— — Bruzelius, Skand. Amphip. Gamm. 1859. p. 38. 



— ampulla, Bell, Belchers last of the aret. voy. (App.) 1855. p. 406. 



pl. 35. fig.l. 





