The Decapod Crustaceans of the Canadian Arctic Expedition 



1913-18. 



I'.v MAHY ,). HATHIU \. 



Associate in Zoology, l'n/l<<l Sl<it<'* \<ifi<uil MUM tun, 



The known range of several species is extended by the specimens nl>1;iincd 

 by the Canadian Arctic Expedition. Five of the species of ,s'/>//v>///mv/r/x .-in- 

 shown to have a more complete circurnpolar distribution, while l'<irnl/tlit>/hs 

 camtschaticus is recorded for the first time from the Arctic (occurrence possibly 

 accidental), and Ionium* bnunHi seems to reach as far north in Bering sea as 

 Norton sound. Attention is called to the distributional charts of von llofsten 

 (see bibliography) in some of which notable gaps are filled or reduced by the 

 new data here published. 



As nearly all of the species of shrimps collected by the Canadian Arctic 

 Expedition were described and their synonymy worked out in the author's 

 report on the decapod crustaceans of the Harriman Alaska expedition (see 

 bibliography), a reference to that work is made under each of those specie- in 

 the list below. 



It may be noted that the care with Avhich the specimens were obtained and 

 preserved is due to Mr. Frits Johansen, naturalist of the expedition. 



LIST OF THE SPECIES. 

 Order DECAPOD A. 

 Suborder NATANTIA. 



Suprrfamily PAXDALOIDA. 



Family PANDALID/E. 



Genus Pandalus Leach. 

 Pandalus goniurus Stimpson. 



(Rathbun, 1904, p. 38, pi. I, fig. 3.) 



Off point Lay, Arctic Alaska; hit. 69 35' X., long. 11)3 27' \V.; 11-12 

 fathoms; rock and sand, with alga*; August 17, 1913; station 22; twelve speci- 

 mens. 



DISTRIBUTION. Arctic coast of Alaska southward through Bering sea to 

 Okhotsk sea and to Puget sound. 3-100 fathoms. 



Suix-rfamily /'.I /. .1 K \IO\OIDA . 



Family HIPPOLYTID^. 



Genus Spirontocaris Bate. 



Spirontocaris groanlandica (J. C. Fabriciu- . 



K.ithbun, 1<)04, p. 61.) 



West of Cockburn point, Dolphin and Union strait, Xorthwot Territories 

 15-20 fathoms; sandy mud, with stone- and alga-: September 14, 1<)I.">; -talion 

 43c; three specimens. 



Vol. vii lli-T.t II 



