4 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
Only a small amount of coloration is found on animal and is in 
bars or incomplete rings of white granules against a dark background 
at bases of tentacles. Lips seldom seen raised above level of disc 
and are smooth and unpigmented. 
Tentacles fully retractile and have ectodermal longitudinal muscles. 
Radial musculature of disc is ectodermal also. 
Mesenteries: In upper part of body of perfect specimens there are 
12 pairs of complete and fertile macrocnemes, including 2 pairs of 
directives that correspond to the 2 siphonoglyphs, and 36 pairs of 
Ficure 1.—Flosmaris grandis: a, d-f, live specimens removed from their burrows; ), 
enlargement of the oral disc and tentacles; c, relaxed and extended preserved specimen. 
