No. 405.] NORTH-AMERICAN INVERTEBRATES. 757 
[v 
- 
. Column cylindrical, tapering aborally, length 450 mm., diameter 40 
m.; tentacles very numerous; marginal tentacles of different 
lengths, outer ones 25 mm. long, inner ones 56 mm. long; circum- 
oral tentacles 25 mm. long, in several rows 
H 
C. borealis Ver., N., M., 7-150 fathoms 
SPECIES OF ZOANTHEJXE. 
un 
rs 
Surface of body more or less incrusted with sand grains 
Epizoanthus 59 
. Colonies of from three to ten or more polyps growing out of a common 
flesh ; height of polyp about 25 mm.; tentacles thirty-eight or 
more ; attached to stones or to dead snail shells inhabited by her- 
mit crabs (in many instances the shelly material has disappeared, 
leaving the common flesh of the colony to form an investment for 
the crab) 
Epizoanthus americanus Ver., N., M., 28-466 fathoms (Fig. 22) 
Ui 
be) 
BIBLIOGRAPHY. 
In addition to the larger works of Andres (Fauna und Flora des Golfes von 
Neapel, Bd. IX, Die Actinien) and of Hertwig (“ Voyage of the Challenger,” Zoology, 
Vols. VI, XXVI), the following papers will be found of special importance in 
studying the North-American Actiniaria. 
AGASSIZ, A. 
'62 Proc. Boston Soc. Nat. Hist. Vol. ix, p. 159. 
'63 Journ. Boston Soc. Nat. Hist. Vol. vii, p. 525. 
AGASSIZ, E. C., AND AGASSIZ, A. 
‘65 Seaside Studies in Natural History. 
AGASSIZ, L. 
'59 Proc. Boston Soc. Nat. Hist. Vol. vii. 
'60 Contrib. Nat. Hist. U. S. Vol. iii. 
GOULD, A. A. 
.'41 Invertebrates of Massachusetts. 
LE SUEUR, C. A. 
'17 Journ. Acad. Nat. Sci. Philadelphia. Vol. i, pp. 149, 169. 
McMunnicg, J. P. 
'87 Stud. Biol. Lab. Johns Hopkins Univ. Vol. iv, p. 55- 
19. 
'98 Bull. Lab. Nat. Hist. Univ. JAN "Vol. iv, p. 225 
