234 VERRILL 



HENRICIA SANGUINOLENTA MILIARIS Verrill, subsp. nov. 



Plate Lxxxviii, figures 4-40. 



Rays five, well rounded, evenly tapered, and minutely spinulated. 

 Proportions about as in the typical form of H. sanguinolenta. 

 Radii of the type, 10 mm. and 38 mm. ; ratio, i : 3.8. 



The surface appears to the naked eye remarkably fine, smooth, 

 and even, owing to the very small and uniform dorsal pseudopaxillae. 

 These are very numerous, distinctly separated, and rather closely 

 placed, but not in contact nor forming rows or circles. They are 

 mostly roundish, about as high as broad, and have about six to 

 twelve very small, slender, acute, rough spinules. The papulae are 

 small and numerous between. The dorsal papulae are mostly single, 

 but often two or three together on an area. 



On the actinal side, the two marginal series and the peractinals 

 form three very regular and evident rows, and there is a very 

 evident channel between the inferomarginals and peractinals, along 

 which there is a very regular row of single papulae, larger than those 

 found elsewhere. Papulae between the peractinals and adambulacrals 

 are mostly lacking. When present, they are few and very small. 



The adambulacral plates bear a single rather slender furrow-spine, 

 and about twelve to fourteen on the actinal side, mostly in two 

 crowded, graded rows. At the edge of the furrow there are three 

 larger than the rest, one of which stands on the apex of the plates ; 

 two others, nearly as large, stand just back of the odd one, forming 

 an oblique pair. The rest are graded so that the outer ones are 

 single and of about the same size as the spinules of the adjacent 

 plates. The inferomarginals are transversely oblong, about twice as 

 broad as long, with about fifteen to twenty spinules, like those of the 

 dorsal ossicles, but somewhat larger. The superomarginals are about 

 half as large, of similar form ; both rows are oblique. 



The peractinals are roundish, very distinct, close to the adambu- 

 lacrals, and have about eight to ten spinules in a stellate group. On 

 some of the rays they extend nearly or quite to the tips. There is 

 usually a short, subactinal row. 



The type was taken off Cape Cod, Massachusetts, in shallow water, 

 by the U. S. Fish Commission, 1879. 



HENRICIA TUMIDA Verrill. 

 Plate XII, figures i, 2; plate Lxxxvii, figures i, 10 (details). 

 Henricia tumida Verrill, Amer. Naturalist, xliii, pp. 554, 555, fig. 5, 1909. 



Rays five, short and thick, acute; disk large, thick, swollen. The 

 radii in the type are 1 1 mm. and 30 mm. ; in another, 10 mm. and 

 22 mm. ; ratios vary from i : 2.00 to i : 2.7. 



