A MONOGRAPH OF THE EXISTING CRINOIDS 87 



is rather longer than broad, and the fifth, a transition segment, is somewhat over twice 

 as lotas broad with the distal third highly polished. The next segment is about half 

 a" ain as lon^as broad and those following decrease in length, after 3 or 4 becoming 

 about " long as broad and so remaining to the penultimate. The transition segment 

 and ah the segments following bear prominent and sharp dorsa spines The opposing 

 "Lis bluntand very small or obsolete. The terminal claw is longer than the penult, 

 mate segment, and is relatively little curved. 



ThHisk is unplated. The brachial ambulacra have well-developed plates. The 

 pinnmelmbulacra have well-developed side and covering plates. Saccuh are abundant, 

 lnr<r P on the brachial ambulacra, and small on the pinnules. 



S The ends of the basal rays are visible as small tubercles in the interradial angles 



° f ll The'Sials are concealed by the centrodorsal. The IB* are short about 4 times 



S^ies, „ rhombi* « ataost ^S£££7S£EJ t"S Si 

 "° rS TW ~ "SSS S w™ ™>o„ g . Tbe fa, 2 brachials arc 



brachials 3 + 4) is ra ^^ % f u ^^ brachials arc ob long or slightly wedge- 



bracbiais are prominent., ^ *»« is no ovar app.ng. ^ ^ ^ ^ 



Svzveies occur between bracmais a-r*, u^"" n^ rn ,„ / , 11 i. p 



brachfalflG+lT, and distaUy at intervals of from 3 to 5 (most commonly 4) muscular 



articulations^ , ^ g Qf ^ rathe dispr0 portionately 



^awTbS as long 4 h broad and spinous J^^^^t'SI 

 smaller and more slender, and longer than jWL^ft ^^J differentiated from 



TotchTd outline. The following pinnules are Jta ^crease JjJjJ*^^ 



then gradually increase totally, reaching a length ^oi \M I mm 1*> < ^ I 



the first segment short, the second about as long as ^broad and tht na , ^ 



becoming elongated, though the length never exceeds Us u e tin vs idtli. 



of the segments are somewhat overlapping. Barber's Point Light (near 



S%«' IA £'£*££ ioo», im 19 i8, .« .«.! <■• CS.N.M, 



22686) 

 the 



!^=^ 



m 



1909. 



