ASTKKolDKA "1 \n|<TH PACDTl VM> ADJACENT WATBBfl ii-Hh.u 93 



Bpines mill nrr --ii much mailer and different in form from the corresponding ones <>f 

 akuksnsis thm thej furnish a convenient character for identification Then is t ho 

 usiiul cordon of small pedicellariae along the furrow face of the adambulacrals, as 

 well as on the <>riil and firel bu or eight adambulacral Bpines 



Crossed pedicellariae (pi 12 fig. I'm nrr amall, blunt, with a rather extei 

 terminal lip. They measure about 0.2 to 0.26 mm in length abactinally, when 

 they form » Bparee Beries around the Bpinelete or occur onlj hen and then on the 

 integument between (Medni They form wreaths on the Buperomarginalfl and 

 clusters <>n the outer (upper aide of inferomarginals, actinal and adambulacral 

 spinet 



Madreporic body circular, rather amall, situated about mid r, and surrounded 

 by n circle of spin. - 



Color in life: "Above, deep olive green with the tips of the Bpines whitish; I 

 of the edges very pint I- Stejneger, note on specimen from Bering [alan 



Variations The specimens from the Commander Islands have Bomewhat less 

 regularly arranged abactinal Bpines than have the Kamchatkan examples The 

 latter have Bomewhat broader, more evenly tapered rays, and "ii either side two 

 pretty regular dorsolateral Beries of Bpines 



The three specimens from Simushir, Kuril Islands, ue smal] (R 7,21, and 25 

 mm.) yet the actinal plates and Bpines are \w'll developed in the two larger. These 

 and the smitll straight pedicellariae \\ill serve to differentiate tin species from /-. 

 alash iatica, with which it is associated. The abactinal papulae nrr in su 



longiseries, but the intervening spine ■■< regular. Man) of the dorsolateral 



plates carry t\\" or three Bpines, while in Petropavlovsk specimens then is mon 

 often only one -pi n< • . although plates with two or three do occur hen and there 

 The Buperomarginal, inferomarginal, and actinal spines ( »f the Simushir example are 

 relatively longer and a little slenderer than in either Bering Island or Petropavlovsk 

 specimens, and there is but one apical i>ral spine Straight pedicellariae are fairly 

 numerous, compressed, lanceolate ovate, obtuse to fairly acute. 



Tyjn locality Kamchatka. 



I> t './'.. Commander Island- Kamtschatka, and the Kuril Islands. 

 zamined. Fourteen 



Bering [aland, Commander Islands, L Stejneger, 1883; one specimen Nikolski, 

 Bering [aland, Comman ler Islands, shore rocks, June 15, 1906, Albatross, two s] 

 men- Medni Island. Commander Islands, shore rocks, June 13, 1906, ATbat 

 three specimens. Petropavlovsk, Kamchatka, harbor, August 13, 1896, June 18, 

 1906, Albatross, five specimens. Milne Hay. Simushir. Kuril Islands, Bhoro, June 

 28, 1906, Albatross, three specimens 



Remarks. Brandt'- diagnosis read-: "Disci diameter cireiter pollicaris Rad i 

 sei conici acuminati, longitudine vix subequales, poUicis unius vel W longitudine, 

 anti basin multo latiores Totum dorsum umbrinum vel ochraceum pnpilh 



pedieellatis, truneatii-eapitati-. fie.pientihus, alhi- \ el e fuscente nll'idi-, i mineiitiis 



retieulati- impositis, in radiif subregulares formantibus obsessum In mari 



( 'amt-ihatiei. " On page 32 of the Raise, he says: "Unters heidel rich durch das 

 Vorkommen von 6 armen « • • lim | „ n f ,| ( . m RQcken 6 his 7 Reihen gekSpfter 

 heln tragen, bo wie durch dninihige dOnne Ambulacra] Btacheln 



