CCELENTERATA. 
667 
AsteractiSf gon. nov., Verrill, 1. c. p. 404. Column versatile in form ; walls 
firm and subcoriaceous. Disk broad, capable of involution, bearing near the 
mouth a circle of numerous simple tentacles, and outside of these a corre- 
sponding number of radiating rows of small, sessile, somewhat lobed and sub- 
divided tubercles or papillm, increasing in size to the margin, which is 
crenulate or dentate with the last tubercles of each series. This genus is 
somewhat allied to Oulactis. A. hradleyi^ sp. n., Verrill, 1. c. p. 405, Panama 
Reef. 
Evactis, gen. nov., Verrill, 1. c. p. 470. The column bears vertical rows of 
verruciform suckers or tubercles, and is perforated by numerous openings, 
from wliicli water is ejected wlien the body suddenly contracts. The inner 
tentacles are smaller and shorter than the outer ones; mouth with four 
prominent lobes. E. artemisiaf Drayton, Verrill, 1. c. p. 471, and E. xantho- 
ffj'ammica, Brandt, probably the same as the former species. 
CladacUs, gen. nov., Verrill, 1. c. p. 471. Column firm in texture, low, broad, 
crowdedly covered with elevated, subtentaculiform tubercles or papillm, which 
have round inflated tips ; those on the sides simple, or two- or thr^e-lobed ; 
those at the margin of the disk elongated, pedunculated, the end divided into 
two to six rounded lobes. Tentacles numerous, rather long, the inner ones 
largest. Disk broad, with a naked area or “ fosse ” between the tentacles 
and the margin. C. yrandis, sp. nov., Verrill, 1. c. p. 472, Panama. 
Anthopleura doioit, sp. n., Verrill, 1. c. p. 474, Panama. 
Calliactis, gen. nov., Verrill, 1. c. p. 481. Column very changeable in form ; 
in full expansion elevated, subcylindrical, with a broadly expanded base ; in 
contraction forming a broad, low, flattened cone, or convex disk. Surface 
nearly smooth in expansion, except near the base, whore there are one or more 
transverse rows of conspicuous lateral pores or cinclidro, which have thickened, 
permanently raised borders. Basal margin below the pores thin and ex- 
panded, usually with an additional internal lamella intercalated between the 
larger ones that extend to the disk, all of which are usually visible through 
the thin but firm walls. Tentacles numerous, slender, subulate, highly con- 
tractile. Acontia highly developed, emitted freely from the cinclidfe. C. 
variegata, sp. n., Verrill, 1. c. p. 481, Panama. 
Phellia panamensis, sp. n., Verrill, 1. c. p. 490, Panama. 
Paractis (?) nohilis, sp. n., Verrill, /. c. p. 491, Panama. 
Epinctis, gen. nov., Verrill, 1. c. p. 492. Integument firm. Column subcy- 
lindrical, capable of involving the summit and contracting into a hemisphe- 
rical form, with a distinct submarginal fold or parapet,” separated from the 
tentacles by a narrow fosse. Surface smoothish, in contraction reticulately 
wrinkled ; near the base it is suiTounded by a circular wrinkle or depression, 
upon which there are borne a variable number of young of various sizes, ap- 
pearing as if originating from surface-buds, but possibly produced from ova 
attached in this place to the skin. These young may be removed without 
rupture of the integument, although they adhere quite firmly, and leave a 
depression in the surface of the skin ; but there are no apparent lateral 
openings in the vrall. Tentacles numerous, about fifty, arranged in several 
rows. E. prolifera, sp. n., Verrill, 1. c. p. 492, Puget Sound. 
Mammillifera coiiferta, sp. n., Verrill, 1. c. p. 497, San Salvador ; M. niiida, 
sp. n., Verrill, 1. c. p. 497, same locality. 
Ephoanthm elongatuSy sp. n., Verrill, 1. c. p. 497, Pearl Islands ; E. humilis^ 
2z 2 
