wri.i;<>iii|.\ 01 NOBTB PACTJft 1ND ADJACXNT WATKBB PISED 



; inn I surface of Large specimens is rather uniform in appearance. The do 

 apinelete are relatively small, a trifle Bhorter and slightly leas numerous than in the 

 cotype. They arc rather more Btubby and Bubclavate, l>ut are, bow< • oop- 

 ahaped in oaanj or incipiently oleft at the tip; epidermis thick; Btra 



pedicellariae rather few. There are aii or seven Buperomargina] spines to a plate. 

 usually one short intermargina] Beries, regularly two inferomarginal Bpines, and proxi- 

 mal I \ two and three adambulacral Bpines, then two and two, and distally two and 

 The ventral Bpines have the usual armature of pedicellariae. 



The Buperomargina] and inieromargina] Bpines arc robust and Bcoop-ehaped, 

 varying t<> a slenderer form, with or withoul a groove along the outer aide. The 

 marginal Bpines vary in stature from that characteristic of Verrill's "nortonet 

 yei Morton Sound examples may have thick -pine- to the broadlj Bpatulate bcood- 

 shape form of forma anomala medium slender to Bpatulate. 



The Bubambulacral Bpines vary in size <>r robustness corresponding to the devel- 

 opmenl of the marginal Bpines, and they usually have a well-marl ■ ive down 



the outer side. A mature example, with K 89 mm. ha-, however, slender -uhar 

 laeial ami marginal Bpines withoul a groove or with only an indication near thi 



So far as form of >pme i- concerned, tin- -en,- includes nearly 



variation. 



The pedicellariae are Larger than in the cotype, yet not bo large a- in bod • • 



pies from the eastern part of Bering Sea. 



The detail- of the en— ed pediecllariae. alway- -omew hat Variable, are p 



■ to those of the cotype'- pedicellariae. The straighl pedicellariae, how. 

 begin to -how a tendency, much better marked in eastern Bering Sea Bpecimem 

 develop irregular spines at the tip of the jaws. (PL 7, fig. I.) No two pedi c ella r iae 



arc exactly alike and a comparison of figures will give a better idea of the structure. 



In the OOtype there is only the faintest BUggestion of thi-. I'l. 6, lii-'-. 10, ". b, 



The larger Btraighl pedicellariae of the actinal surface are about 0.75 mm. loin'. 

 sometimes somewhat larger. The . roased pedicellariae of the inferomarginal 



-pines, in a -pcciinen with B 130 nun., are 0.315 to 0.36 mm., while in one with I. 



mm., they measure 0.29 to 0.325 nun. The latter is a -| imen with alenden 



than the lirst and the pedicellnriac are a shade Less robust Compart pi 



and :ia.) These crossed pedicellariae, a- noted in the preceding section, are la 



than in the cot\ pe. 



The young, of course, have narrower rays and in very small example- R 20 

 nun.) the intermargina] channel i- lateral instead of ventral, while the ray i- i 



nearlv terete. Thi- gives the creature an entirely different aspect There art 



actinal papulae, only one intermargina] papula t<> an area, and one or two abactinal 



to aii area Supei omiuirmal -pine- two or one; infcroinar<:inal two; adainhulacral 

 I WO, two or one, two 



I r„ri Clarence, Alaska, *.,.u- Bering Strati Two specimens One I 



mm., r 1'.". mm.. B 1.2 r ; breadth of ra\ at base 24 to 27 nun. The other hi 

 ^_' mm. In both specimens the ahactinal spinelct- arc -mall as m t: 



-p. , ltii.ti-. slightly more numerous, slightly tapered in some cases, blunt or incipientlj 



grooved in the larger, ami more often bluntly pointed in the smaller. The he 



