\-Tr R01D] \ ' I'M IF1C AM. \. 129 



u clearly evident reticulata Rather thi 



carina] Beriea not at nil or only feebly diff< 

 pedicellariae relatively narrow. 



Superomarginal Bpine i to a plate, slightly tapered, blunt, Bubequal 



to the dorsolaterals to 50 per cenl larger; spinelete well spaced, low on ride of ray, much 

 Blenderer than in typical oJasJctnsis. [nferomarginala proximallj ><ur nr two, distally 



ularly one or two or regularly two, conspicuously larger than superom 

 typically tapered, blunt (not clavate Actinal Bpinee either absent or represented 

 by ■ very short series, similar to inferomarginals. The small plates extend scarcely 

 ti third length of ray. [ntermarginal channel prorimally fairly broad. 



Bivalved pedicellariae rather variable but with the jaws considerably narrower 

 than high, anil smaller than in typical alat In s relatively few pedicellariae 



the jaws are nearly as broad as high and untapered when viewed from the outer 



face hut in the majority the jaw- an' tapered. (PI 18,1 <<».) 



Adambulacral spines alternately one and two; or at base of ray irregularly one 

 and two, distally one: or lees often one throughout n 3anl orn Harbor 

 Two pairs of postoral adamhiilaeral- in contact. <*ral Bpines three, as in old ■ 

 hut not quite so long nor bo broad. 



Some of the specimens from Humholdt Hay have a much weaker than normal 



abactinal skeleton, with relatively -lender ossiclee and large meshes four or five be- 

 tween opposite Buperomarginal pit 



The rays vary in caliber from slender to medium stout. Lai mple K 



in mm., r 11 mm . R :: • 



The variety from Seldovia, Cook! fnlet, was carrying eggs April 9, i v ' 



Type of forma ahitmag ('at. No. V. 1500, Q.S.N.M. 



Type locality. — Humboldt Hay. Shumagin [slands. 



Distribution.- Cooks Inlet to Shumagin [slandc 



Remark$. — Thi- i- a small race or form which i- found in the region bet 

 Unimak Island (where nearly typical "/"• I Cooks Inlet. It inter- 



grades with a variety of forma alaskentit on Kodiak. and probably elsewhere. It is 

 Hon,' ton homogeneous. The characteristic smaller Bpinelets, mostly monacanthid 

 Buperomarginals, and -mailer Btraight pedicellariae bibited by the Shu- 



magin [aland specimen-. 



I.mtiui fKIIIII OKKVSIS. nr« forma 



:- I ' ' 



Thi- i- a medium-sized rather Blender-rayed variety with !. pug abo 



mm. and very numerous, uniform abactinal Bpinelets compactly placed and defining 

 small, numerous papular area-. Abactinal surface evenly arched, with a regular, not 

 lumpy surface The Bpinelets are generally much mon • than in f. aUuh 



and vers definitely form single or double palisades on thi of the skeleton. 



defining a very evident reticulate pattern on the abactinal surface VltJ i the 

 Bpinelets are often crowded along thi' carina! line the] form convei 



Thi- form resembles the common variety of.;/.' ■ . Kodiak hut tin- raj 



slenderer and longer ami pedicellariae 



