GB Cdiniilnni Arctic Expedition, 1913-1S 



Mysis relicta Lovdn. 

 G O. Sars, Mon. Norges Mysider, [II, 73, pi. \\.\XI. 1879 



Station \'2 /": Bernard harbour. Northwest Territories, October 10. 1!)15. 



From stomach of ( 'r/^t/ron/cr iiuiiniiiciixli \\ .. caught j n Jake 

 inland. 



2s, 49. 



Neomysis andersoni n. sp. 



This apparently new species of A Yo/// //*/'* was collected by Mr. Frits Johansen 



of the Southern Party of the ('anadian Arctic Kxpedition at (irantley harbour, 

 Port Clarence, Alaska, August :! I, I'M: 1 ,. (Stations 20 a, f, surface, 1 <?, length 

 21) mm..:* , . 20 + juv.). Catalogue, Nbs. 12;") 1 and 12.">2, Victoria Memorial 

 .Museum. ( Utawa. ( 'anada. 



Though considerably smaller, it is similar to .\Yn/////.s/.x rai/i. It differs, 

 however, from this and all other related species on the west coast ill the anna- 

 lure of the telson. This consists of comparatively large spines, lie) ween which 

 are intercalated groups of smaller ones rather regularly arranged, except for 

 the interspace adjacent to the large terminal spines of the telson. which contains 

 three of the smaller spines: the interspaces of the distal third of the telson have 

 four, live, or six spines between each of two larger ones; proximally there seem 

 to be only two small spines to each interspace; terminally there are two large 

 spines with two small ones between. The telson is deeply sulcate above and 

 about one-fourth as long as the rest of the abdomen; the inner branch of the 

 uropods is about as long MS the telson, while the outer exceeds the telson by a 

 little more than one-third its length. 



KM;. 1.- Veomysis^andersoni, 9, X about 15. a, dorsal view of antcnnal region; b, of tail fan. 



I'Yom .1///.V/V.' cnxliitu Holmes (see Hansen, University California Pub. Zool., 

 11, 177, pi. !i. fig-, '2 a d), which has a telson somewhat similarly armed Literally 

 it is at once distinguished by the facl thai the two large terminal spines are not 



juxtaposed, but are separated by two smaller ones. 



The frontal p'ate is proportioned like that of N. franciscana Holmes 



Hanson, /. c., 178, pi. '., fi-is. :i a b, 1 ( .)13), and is subtruncate, and somewhat 



nous, forming on the frontal margin_three very slight lobes, one at each 



