22O VERRILL 



rough-tipped spinules, much like those of var. dyscrita. The papular 

 pores are numerous and rather small ; the areas are mostly narrower 

 than the plates. 



The two rows of marginal plates and the peractinal row, on the 

 proximal part of the ray, are regular and subequal, transversely elon- 

 gated, much like those of var. leviuscula in form and size; close to 

 the base of the ray there may be a few small subactinal plates, and 

 two short rows of intermarginals. All these plates are covered with 

 slender, rough-tipped, divergent spinules like .those of the dorsal 

 side, but longer ; there may be fifty or sixty on the larger marginal 

 plates, of which about twenty-five are on the border. 



The adambulacral spines are the most characteristic feature. They 

 are all much larger and longer than in the typical variety, mostly 

 terete, slightly clavate, obtuse. There are mostly but ten to twelve, 

 paired in two rather regular, divergent rows, the inner one or two 

 only a little larger. The rest are graded, but the outermost are more 

 than twice as large as those of the marginals. 



The type is from the Queen Charlotte Islands (coll. G. M. Dawson, 

 Geological Survey of Canada), received in exchange from J. F. 

 Whiteaves (No. 5133, Yale Mus.). Others, very similar, are from 

 off Victoria and Sitka. 



HENRICIA LEVIUSCULA SPICULIFERA (Clark). 

 Plate LXXXVII, figures 2-26 ; plate evil, figure 3. 



Cribrella spiculifera CLARK, Proc. Boston Soc. Nat. Hist., xxix, p. 328, 



pi. n, figs, i, 2; pi. iv, fig. i, 1901. 

 Henricia leviuscula multispina (pars} FISHER, op. cit., 1910, p. 571; 19116, 



p. 286, pis. LXXII, LXXIII. 

 Henricia spiculifera FISHER, op. cit., 19116, p. 295 (copied from Clark). 



The two type-specimens of this subspecies or variety, which were 

 in the collections of Columbia University, have been examined by the 

 writer. They were preserved in alcohol. Radii, in one example, 

 about 14 mm. and 64 mm.; in the other, 15 mm. and 77 mm. 

 Ratios, about as 1:5. The five rays are rather stout and swollen at 

 base, tapered distally to rather slender tips. 



In these specimens, which were somewhat relaxed or flaccid in 

 alcohol, the dorsal ossicles are not closely crowded, but seemed 

 separated by intervening spaces, the visible portion being prominent. 

 The papular areas appear rather large. The dorsal ossicles are 

 small, and very unequal in size and form and show no definite 

 arrangement in radial rows. Many of the larger ones are promi- 

 nently crescent-shaped, as exposed ; others are oblong or elliptical ; 



