SHALLOW-WATER STARFISHES I75 



Sessile major pedicellariae are large, erect. The larger nearly 

 equal to the spines in diameter, are sparsely scattered on the dorsal 

 side and more frequently on the intermarginal channels; some 

 equally large are also attached to the inner edges of the ambulacral 

 grooves, and in some of the interradial areas below, but most of the 

 axils bear groups of much smaller ones. The larger pedicellariae are 

 somewhat elongated wedge-shaped, with broad, spatulate jaws, 

 strongly dentate or unguiculate at the wide tips. 



The madreporite is large, flat, fine-grained, flush with the surface, 

 with a few spines and large pedicellariae around it, but with no 

 special bordering. Ocular or apical plates covered with many small 

 spines. 



Off San Francisco, probably in rather shallow water (Prof. W. E. 

 Ritter). 



ORTHASTERIAS KGEHLERI (de Loriol). 

 Plate Lxxv, figures 3-3C (type, after de Loriol). 



Asterias koehleri de Loriol, Mem. Soc. Phys. et d'Hist. Nat. Geneve, xxxii, 

 No. 9, p. 21, pi. Ill (xviii), figs. 3-S, 1897. 



The type had the following characters : 



Rays five, long, slender, well rounded dorsally. Radii, lo mm. and 

 97 mm. ; ratio, i : 9.7. Dorsal spines numerous, long (2 mm. to 

 2.5 mm.), slender, blunt, striated distally, arranged without order. 

 Ventral spines [marginal and peractinal] form three regular rows; 

 they are rather larger and longer than the dorsals. Adambulacral 

 spines long and slender, mostly two to a plate, divergent. 



A few large, dermal, dorsal pedicellariae, some of them i mm. 

 long; they are long-lanceolate, acute, dentate at the tip. Major 

 pedicellariae of unequal sizes occur on the actinal side and on the 

 edges of the ambulacral grooves. 



Saanich Inlet, Vancouver Island (de Loriol). 



ORTHASTERIAS DAWSONI Verrill, sp. nov. 



Plate XXIII, figures i, 2 (type) ; plate lxxv, figures 2-2& (spines and pedicel- 

 lariae) ; plate lxxx, figures 2, a-g (pedicellariae) ; plate lxxxi, figures 

 Z-2,h (spines and pedicellariae). 



Disk very small ; rays five, slender, angular above when dry, 

 gradually tapered. Radii of type, 10 mm. and 80 mm. ; ratios, i : 8. 



Dorsal spines in three regular radial rows, long, tapered, obtuse, 

 or subacute, standing singly on the plates. 



