MONOGRAPH OF THE EXISTING CRINOIDS. 709 



red; a few of the pinnules on green or yellow green areas are white; elongated 

 oral pinnules chestnut dorsally and chocolate ventrally; disk blackish brown and 

 chocolate, the ambulacral grooves light yellow. 



(i) Very similar to the preceding, but with no white interbrachial plates; 

 centrodorsal white; terminal half of the arms \ery light greenish yellow.] 



[Comanthus bennetti. (a) Division series and arms dull orange yellow with 

 numerous small spots of dark orange ; toward the middle of some of the arms the 

 spots become darker, and lighter again toward the tips; the color of the pinnules 

 in general corresponds to that of the arms; elongated oral pinnules dull orange 

 with spots of dark reddish orange; ventrally some arms are very dark brown, 

 while others are wholly or partly dull orange with spots of dark reddish orange; 

 disk dark wine red. 



(b) Division series greenish yellow with a thin stipple of very dark wine red; 

 arms dorsally very dark wine red stippled with light orange yellow, the latter 

 becoming more abundant at the margins of the brachials; pinnules dorsally in 

 the basal third very dark wine red, heavily stippled with light orange yellow; 

 ventral surface of disk and arms light orange yellow very finely stippled with 

 very dark wine red, the stippling absent on the pinnules: centrodorsal dull orange 

 yellow ; cirri dorsally similar but in the terminal half light orange yellow stippled 

 with very dark wine red; ends of the tips vitreous, the bases glassy over dark 

 reddish orange. 



(c) Centrodorsal chestnut with white dots; division series purplish; arms 

 dark chocolate with two rows of alternating white spots on the ventral side of the 

 arms and the tips of the pinnules light brown; disk creamy white; cirri with 

 a tinge of purple and glassy tips. 



(d) Centrodorsal and division series very dark reddish brown, with just 

 a suggestion of dark purple, becoming lighter reddish brown in the terminal 

 half, very closely stippled with light yellowish green; arms and pinnules dorsally 

 dark reddish brown with a very light yellowish green stipple and ventrally the 

 same with the ambulacral grooves chestnut; disk dark reddish brown with a 

 purple tinge, with a very close stipple of light yellowish green; cirri dark reddish 

 brown with a purple tinge, lighter proximally and distally, with silver tips.] 



Comanthus solaster. Dark purple, the disk, cirri, and pinnules brownish 

 yellow. 



Comanthus japonicus. Bright yellow to deep yellow brown. 



Comanthus wahlbergii. Dark violet to blackish. 



\Comanthus samoana. (a) Arms dorsally olive, slightly lighter ventrally: 

 pinnules near the arm bases olive dorsally, slightly darker ventrnlly, toward the 

 ends of the arms becoming yellowish, slightly darker ventrally; tips of the pin- 

 nules much lighter than their bases; centrodorsal dark olive with the center yellow; 

 cirri light yellow, slightly darker dorsally than ventrally. 



(b) Blue green. 



(c) Purple, the pinnules with yellow tips. 



(d) Brown, shading into green at the middle of the arms; tips of the arms 

 yellow. 



