BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 27. AFD. IV. N:0 8. 57 



it is advisable to draw from this material, conclusions at 

 variance with those of Smith, Särs and others who have 

 examined many hundred specimens, not withstanding the fact 

 tliat these authors do not deny that ijoung males agree in the 

 form and armament of the rostrum and in the possession of 

 a pterygostomian spine.^ 



Smith regards Hippolyte cultelhita, and Doflein H. umazo 

 Pfeffer as synonymous. in which view they are, no doubt, 

 right. 



HippoJytc polaris is strictly circumpolar and arctic. It 

 has been found on both sides of Davis Strait, Baffin Bay, 

 and Smith Sound, along the coasts of Labrador, Nova Scotia, 

 and New England as far south as Massachusetts Ba}^, Behrings 

 Straits, Franz Joseph Land, Kära Sea, Nova Zembla, Spitz- 

 bergen, Beeren Island, Norway, Bohuslän, North Sea. 



The largest specimens which I have examined were ob- 

 tained round King Charles Land and from East Greenlaud 

 at a depth of 100 — 200 m. which agrees with observations 

 made by Hansen and, recently, by Doflein. It has been 

 taken in depths ranging from a few up to 260 fathoms. 



LciKjtli of largest spec. (from East Greenland) 89 mm. 



21. Hippolyte groenlandica (J. C. Fabricius). 



1775. Astacus Groenlaudicus J. C. Fabricius, Systema Entomologiie, 



p. 416. 



1780. Cancer aculeatus O. Fabricius, Fauna Groenlandica, p. 239, 



n:o 217. 



1840 — 41. Hippolyte aculeata Kröyer, Uds. nord. Art. Slfegt. Hippo- 

 lyte, 1. c. p. 578. 



184-_'. > Kröyer, Monogr. Frerast. Slsegt. Hippo- 



lytes nord. Art., 1. c. p. 334, tab. IV, 

 fig. 83—98, tab. V, fig. 99-104. 



1874. . BuciiHOLZ, Crust. Zweite deutsche Nord- 



polarfahrt, 1. c. p. 276. 



1879. » Smith, Stalk-eyed Crust. Atl. Coast of 



North America, 1. c. p. 85. 



' DoKLKiN. I. c. p. 335, seems at first to have the same opinion as his 

 Gonnan collega, but says: »AVährend ich im Beginn der Bearbeitung des Ma- 

 terials gegcu diese Auffassung (von Särs. Smith. Richters u. a.) Stellung 

 nehmen zu miissen glaubtc, habe ich niich schliesslich noch während der 

 Drucklegung des Manuskriptes zu ihr bekehrt: daher konnte ich die Arten 

 nicht mehr zu der einen [H. iwlaria Sab.) nach dem Prioritätsgesetz zusammen- 

 ziehen.> 



