SHALLOW-WATER STARFISHES 239 



Some of the varietal forms referred to H. sanguinolenta by Fisher 

 appear to me to belong rather with borealis, especially those on 

 pi. Lxviii, fig. 3. 



It is not unlikely that H. borealis may be the male form of H. 

 tuntida. Should that prove to be the case, the latter name has 

 priority. 



HENRICIA ARCTICA Verrill, sp. nov. 



Plate Lxxxvii, figures 3-3C (details) ; text-figure No. 13. 



Henrkia eschrichtii (pars) Fisher, op. cit, 19116, p. 276, pi. lxviu, fig. 2 

 (non Miiller and Troschel). 



Form stellate, with a wide disk and short, thick rays. Radii of 

 the type, 13 mm. and 28 mm.; ratio, 1:2.15; breadth of rays at 

 base, 15 mm. 



Fig. 13. 



Henricia arctica Vcr., type. U. S. Nat. Mils. .*\ctinal side, natural size. 



The disk, as preserved, is but little convex dorsally, and nearly 

 flat on the actinal side, with no marked oral concavity, the jaws and 

 oral spines being fully exposed, not sunken in a deep concavity as 

 in H. tuntida. 



The dorsal ossicles are very small and closely united into a very 

 fine-meshed reticulation, with small, single papular pores. The small 

 pseudopaxillas are covered with compact groups of very small, short 

 spinules of nearly uniform length, ten to fifteen or more on the 

 larger ones, often only four to six on the smaller ones. They pro- 

 duce a pretty even, almost granular-appearing surface, of fine 

 texture. Very often four to six small pseudopaxillse form a rosette- 

 like group around a papular pore. 



