710 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



(e) Brown, the tips of the arms greenish. 



(/) Dark brown, lighter dorsally at the arm bases where there is much mot- 

 tling with cream white ; cirri white, marked with light brown. 



(ff) Similar, but the white very much predominates. 



(A) Apparently uniform black.] 



Comanthus annulata. (a) Ranging from lemon yellow and brown to almost 

 uniform dead black, with bewildering diversity. 



(b) Dull green. 



(c) Dorsal surface deep canary yellow, pinnules bright red. 



[(d) Dorsal surface white, the joints darker; cirri greenish white, the joints 

 pure white, appearing as white spots; ventral surface brown, deepest on the disk 

 and lightest at the tips of the arms. 



(e) Chrome yellow, greener orally, the joints not much darker. 



(/) Arms dorsally orange and white, laterally white, ventrally orange; some 

 pinnules dull orange ventrally and white dorsally, others very dark chocolate ven- 

 trally and white dorsally; centrodorsal with a white center passing outwardly 

 through dark drab to bright orange yellow; cirri very light orange yellow; disk 

 dull orange with markings of slightly yellowish white. 



(g) Arms dorsally silver with numerous transverse lines of dark orange, 

 ventrally dark reddish orange; outer third or half of some of the arms light dull 

 orange, slightly lighter dorsally than ventrally; pinnules dorsally silver, with 

 numerous transverse marks of dull orange on the sides, ventrally deep orange, 

 toward the arm tips corresponding to the color of the latter; centrodorsal dull 

 orange ; disk rather dark reddish orange. 



(A) Yellowish green, the pinnules with white tips. 



(i) Arms light yellowish green on both surfaces; pinnules varying from light 

 yellowish green dorsally to india black ventrally, the tips somewhat lighter; 

 centrodorsal olive; rudimentary cirri light olive; disk light olive with black 

 reticulations. 



(j) Arms dark yellowish green; pinnules dorsally the same, shading to very 

 light greenish yellow at the tips, ventrally blackish or bluish green; centrodorsal 

 dark yellowish green; cirri greenish blue, slightly darker ventrally than dorsally. 

 with silver tips. 



(k) Centrodorsal and arms on both surfaces greenish yellow, becoming lighter 

 toward the tips; pinnules light blue dorsally, very dark blue ventrally; cirri bluish 

 dorsally, darker ventrally, with silver tips. 



(I) Bright green. 



(m) Arms leaf green dorsally, olive green ventrally; pinnules bright blue 

 dorsally, dark bluish green ventrally; centrodorsal olive green streaked with 

 brown ; cirri blue ; disk olive. 



(n) Arms dorsally golden green, the pinnules lighter yellowish green with the 

 tips very light yellow for a long distance dorsally and a short distance ventrally. 



(o) Arms olive, slightly darker dorsally than ventrally; pinnules light olive 

 dorsally, dark blue ventrally; centrodorsal olive; cirri pale blue with silver tips; 



