SHALLOW- WATER STARFISHES 127 



major pedicellariae are few, and formed on the labial spines, or rarely 

 a single one on the side of the ray ; they are more or less pointed, 

 about one-fortieth of an inch long, and twice as long as broad. 

 Dorsal papulae in small groups. Ventral papulae mostly single, and 

 curving upward or outward. Diameter, one and three- fourths 

 inch. A variety occurs with more slender and tapering rays. 



" It is smaller than A. Camtschatica Brandt, and has longer arms, 

 etc. 



" Habitat, Puget Sound. North West Boundary Commission. Dr. 

 C. B. Kennerly." 



A good dry specimen in the Yale Museum, from Monterey 

 (Stevens), seems to agree pretty closely with the type. The radii 

 are 5 mm. and 22 mm. ; ratio, about i : 4.5. Rays six, slender, 

 terete, tapered to acute tips. The dorsal spines, which mostly stand 

 singly, sometimes two or three together, do not form definite rows. 

 They are numerous, but not crowded, slender, slightly clavate, or 

 subacute; they are surrounded by small wreaths of minor pedicel- 

 lariae, of relatively large size, which, in alcoholic specimens, fill up 

 the spaces between the spines and give the surface the same even 

 appearance as if the spines were more crowded. The upper mar- 

 ginal spines, which are nearly like the dorsals in size, though rather 

 longer, form a pretty regular row; two often stand on one plate. 

 The lower marginals are at least twice as large and long, and form 

 a very distinct row, but two often stand on a plate ; they are terete, 

 tapered, subacute. The few synactinal spines, when present, are 

 similar. Adambulacrals are nearly as long as the marginals, but are 

 more slender and scarcely taper; they mostly stand two to a plate, 

 divergently, and form two regular rows; they become distinctly 

 longer near the mouth. The tip of each jaw bears two terminal 

 longer and stouter spines, larger than the marginals, and a much 

 smaller one external to these, on each side. 



Major pedicellariae of rather small size are borne, mostly singly, 

 on many of the adambulacral spines, and much smaller ones on the 

 inner margins of the grooves. They are compressed, long-ovate or 

 lanceolate, subacute. They are larger, longer, and less triangular 

 than those of L. aqualis. 



A young specimen, 25 mm. in diameter, from Kadiak, Alaska 

 (Harriman Expedition), appears to belong to this species. The six 

 rays are very slender, and rather closely covered with very small 

 obtuse and capitate spines, more or less areolated on the central parts. 

 Adambulacral spines very slender, mostly in two rows. Its aspect is 

 like that of a Pedicellaster. 



