156 



VERRILL 



are less complete and less regular, both on the rays and on the disk. 

 Radial bands of spines are not distinct. The spines are also smaller 

 and less decidedly capitate. 



The inferomarginal and actinal spines mostly stand singly, so that 

 there are usually only four or five rows near the base of the rays, 

 but on some of the rays more or less of the plates bear two spines. 



The adambulacral spines are long and slender, about equal in 

 length to the actinals on the greater part of the length of the rays ; 

 but toward the mouth they increase in length more rapidly than the 

 actinals, becoming decidedly long and slender on the adoral plates. 



Major pedicellariae are abundant in the lateral furrows, interradial 

 areas, between the actinal spines, in clusters on the adambulacral 

 spines, and also on the inner edges of the ambulacral plates. They 

 are of moderate size, compressed, mostly acute-ovate or ovate-lan- 

 ceolate in form. Those on the sides and bases of the rays are the 

 larger. The clusters on the adambulacral spines are in many cases 

 composed of small-sized forficulate major pedicellariae, but on other 

 spines they are mixed with forcipulate minor pedicellariae in varying 

 proportions. 



Minor pedicellariae occur in small numbers on nearly all the 

 spines. They are also abundant between the dorsal spines, on the 

 papular areas, and on the surfaces of the lateral channels. They 

 generally stand singly when dermal. The papulae are small and very 

 numerous, in large clusters. 



In the Museum of Comparative Zoology I have studied a good 

 series, including some that are quite small. 



One series from Mendocino, California, includes specimens only 

 35 mm. to 40 mm. in diameter (Nrx llffi). Lot No. 1192, also from 

 California, includes three young. No. 1195 is from Alaska. Nos. 

 1^ 1187 are typical specimens from the Gulf of Georgia 

 (coll. A. Agassiz). Of these, No. 1191, was labelled as Asterias 

 brachiata of Perrier. It is probably a cotype of his species, but is 

 not the one of which he gave measurements. He gave no locality 

 for his species. There can be no doubt that the type was from this 

 lot and that it is a synonym of E. troschelii (Stimpson). No. 1190 

 is a short-rayed, close-spined variety from Mendocino, California, 



No. 1906, from Friday Harbor, Puget Sound (Professor Kincaid), 

 is a short-rayed specimen with coarse spinulation (radii, 22 mm. and 

 140 mm.). 



The dorsal spines are decidedly longer than usual, capitate, con- 

 spicuously reticulated and areolated, with no distinct median radial 



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