340 THE AMERICAN NATCRALIST.. (MOET ee IE 
Atolla bairdit Fewkes. 1884. 
Report U. S. Fish Commission, p. 930. 
Umbrella disk-like with aboral center convex. Marginal lappets 44. 
Marginal tentacles 22, each supported by a gelatinous “socle.” Rhopalia 
22, situated in notches between the lappets. Manubrium large, with simple 
mouth. Gastric pouches 22. 
Color.— Slightly bluish, with rust-colored patches, especially on the border 
of the coronal furrow. 
Distribution — Gulf Stream, between N. lat. 35-38; W. long. 72-75. 
One specimen from the depth of gg1 fathoms, the other from surface. 
Arolla verrilti, Fewkes. 1884. 
OP. cit. p. 939. 
Umbrella flat discoid, six to eight times broader than high. 
Marginal tentacles 22 to 28, with same number of interposed rhopalia. 
Marginal lappets same number as the combined number of tentacles 
and rhopalia. 
Distribution — Between lat. 38-40; long. 68-71; from depth of from 
373 to 2,369 fathoms. 
Linerges mercurius Heckel. 1880. Fig. 4. 
OP: Cit.1p. 952. 
Umbrella mitre-shaped, with 
JZ arched crown and usually verti- 
cal sides, diameter about twice 
that of height. Lobular canals 
bowed and rounded out. Ten- 
tacles cylindrical. Gonads 
horseshoe-shaped. Size 12 to 
16 mm. broad. 6 to Io mm. 
high. 
Distribution — Bahama and 
Tortugas Islands (Mayer). Gulf 
of Mexico. Straits of Florida 
Fic 4. Linerges mercurius Heckel. (Fewkes). 
Bathyluca solaris Mayer. 1900. 
Bull. Mus. Comp. Zool., XX XVII, p. 2. 
Umbrella flat and rather thick, aboral surface dotted with batteries of 
nematocysts. Marginal lappets 24; tentacles 16, long and hollow. Rho- 
