56 AXEL OHLESf, ARCTIC CRUSTACEA. 



stat. 21. East Greenland, off Kaiser Franz Joseph Fiord betwcen 



Bontekoe Island and Mackeuzie JJay, depth 250 ni., mud, 



8/VIII, many spec, det. I^önnberg. 



» 22. East Greenland, Mackenzie P.ay N. of Kaiser Franz Joseph 



Fiord, depth 12 — 18 in., mud, 9; VIII, one spec, det. 



LÖNNBERG. 



» 25. East Greenland, entrance of Kaiser Franz Joseph Fiord, 

 depth 200 — 300 m., mud, 14/ VIII, seven spec, det. Lönn- 

 berg. 



As in the case of Hippolytc Gaimardii and, H. f/ihha, and 

 that of H. turgida and U. Phippsii, GoÉs first regarded Sa- 

 bine';? H. poJar/s and Owen's H. horralis as identical. He 

 says: Differentiam ullam specificam inter hane H. borealim 

 et H. polarem numquam percepi, nec hujus feminam inter 

 copiam speciniinum ditissimam inveni. GoÉs' conclusion that 

 H. borraJIs is the male oi H. polaris was accepted b}'- nearly all 

 subsequent writers, such as Smith, Särs, Hansen, Stebbing etc. 

 BucHHOLZ who, in his important memoir cited above, and 

 always characterized by great exactness, enumerates them as 

 distinct species, however, says, about H. polaris: >Die grössten 

 Exemplare vorzugsweise Weil)chen, die Männchen durch- 

 schnittlich kleiner bis zu 50, öder höchstens 55 mm.> and 

 abont H. horealis: »Der vorigen H. polaris sehr nahe stehend 

 und nur durch die sehr eigenttimliche Form des Rostrnm 



verschieden . Zusamme)i mit der vorigen, von ivdcJur 



sic viellcicht nur c i ne Ähänderung ist, indessen viel weniger 

 zahlreich. — — — Sämmiliche osfgrö)iländische SfucJce sind 

 Miuenche)i — — ». After a carefnl examination of the great 

 mäss of material I have had at my disposal both now and some 

 years ago, I fully agree with Smith, who was the first to 

 conclnde that H. horealis represents »adult males, or perhaps 

 more properly old males , while H. polaris are females and 

 young males. Amongst recent writers, Ortmann is the only 

 one, as far as I know, who regards them as distinct species. 

 Ortmann says:^ »Ob diese Art, H. horealis, als (/ zu H. po- 

 laris gehört — , bleibt noch zu erweisen, da mir ein (^ 



mit den Charakteren von polaris vorliegt.) The author had 

 examined according to the list of localities given by him 

 H. polaris a) 1 ef 1 $ Grönland, b) 1 9 Norwegen, Bergen, 

 and of H. horealis a) 2 c/' Ost-Grönland. I do not know if 



* Decapoden Krebse. Strassburg. Museum, 1. c. p. 502. 



