648 Verrill, Notes on Radiata. 



yellow at the lower end, light yellow in the middle, upper part spot- 

 ted with dark gray and ^brown ; front of stalk tinged with purple ; 

 back grayish, the verrucse dark brown ; jjinnse, on the back and sides, 

 whitish, the edge with the polyps yellowish brown. 



Ptilosarcus G-urneyi Gray, p. 382. 



Ptilosarcus (rM?7iei/« Richiardi, op. cit., p. 61, Tav. IX, fig. 5cS; Kolliker, op. cit, p. 

 146. 



This species has an elongated, club-shaped form, the peduncle con- 

 stituting from one-third to nearly one-half the entire length. The pin- 

 nate portion is thick, rather oblong, slightly tapering both ways from 

 the middle. The pinnie are numerous, 50 to 54 on each side, crowded, 

 broad, rounded, nearly semicircular, attached by a broad base, the 

 posterior edge e.\tending beyond the base in the form of a rounded 

 lobe ; the edge is thickened and covered by small polyps, arranged in 

 about four rows, each polyp surrounded by prominent, spine-like spic- 

 ula. Dorsal surface (ventral according to Kolliker) of the stalk with 

 two broad bands of small, crowded, granule-like papillae, formed by 

 the asexual zooides or " rudimentary polyps." The peduncle is thick, 

 bulbous, very muscular, the surface strongly sulcated in contraction ; 

 the interior with four longitudinal canals. Axis long, slender, fusi- 

 form, tapering to the long, slender, I'ecurved points. 



A large specimen from Puget Sound, in alcohol, is 1 inches long ; 

 the feather 5*25; the peduncle 4 "75; greatest breadth of feather 2 ; 

 diameter of peduncle 1"25 ; breadth of largest pinnae 1 -50 ; height 'SO. 



Prof. Kolliker describes a specimen from Vancouver Island, belong- 

 ing to tlie Museum of Stockholm, which has quite diiferent propor- 

 tions: whole length 283"""; feather 180; peduncle 103; breadth of 

 peduncle 20; of feather 45 to 50; of pinnae 25; height of pinnae 30""". 

 This specimen had 54 pinnae on each side. 



Stylatula, page 382. 



In addition to S. gracilis and S. elongata, Richiardi refers to this 

 genus Virgularia Fimnarchica Sars ; V. multiflora Kner, from the 

 Adriatic Sea; and V. elegcms Danielsen, from Christiansand. 



Leptogorgia Agassizii Vemii, p. 388. 



Some of the specimens from La Paz are of large size (12 to 18 

 inches high and 18 to 24 broad) and form complex fronds. The more 

 regular ones give off several lateral fronds from near the base of the 

 primary ones ; these are at first nearly at right angles to the main 



