ORDER II. HYDROIDEA. 687 



ANTENNULARIA cyATHiFERA. (Dana.) 



A. simplex, recta, semipollicaris ; poly pis subremotis, caliculis late ele- 

 ganterque campanulatis, margine integro, dudbus caliculis interme- 

 diis obsolescentibus. 



A simple, erect, filiform stem, half an inch high ; polyps subremote ; 

 calicles elegantly broad-campanulate, with the margin entire ; two 

 rudimentary calicles intermediate. 



Plate 61, figure 5, zoophyte, unexpanded, enlarged ; 5 a, same, na- 

 tural size. Also, figure 9, page 25. 



Balabac Passage, East Indies. Exp. Exp. 



The calicles are neat goblet-shape, with the breadth nearly equal to 

 the length, and the mouth slightly flaring. They are attached to suc- 

 cessive joints of the stem, which are oblong, with very oblique articu- 

 lations. Between them, there are two small appendages, resembling 

 rudimentary calicles. Either side of each calicle there is an oblong 

 slender process having a club-shape head standing out quite free from 

 the polyp. The figure was made from the living zoophyte, though 

 unexpanded. 



The genus Antennularia is usually characterized as having verticil- 

 late branches; but it may be questioned whether this is properly a 

 generic character. 



SERTULARIA MIMOSA. (Dana.} 



G. plurniformis, 3^" alta, pinnulis ferme 4'" remotis et 9'" longis, cali- 

 culis parce prominulis ; polypis longissime exsertis, gracilibus, tenta- 

 culorum serie valde obliquo, elliptico, tentaculis capillaribus, apice 

 recurvis. 



Neat plumiform, 3 inches high, pinnules about 4 lines distant, and 

 9 lines long, calicles short, and sparingly prominent; polyps very 

 long, exsert, and slender, with the circlet of tentacles placed ob- 

 liquely, elliptical ; tentacles capillary, recurved at apex. 



