CELLULARIA. 233 



observation. Sometimes they are separated by very slight distinctions ; 

 the names proposed for them are so various, that every one must waver 

 greatly in their adoption, nor can I pretend to determine which is pre- 

 ferable. Much remains to be done in this respect, both in gaining ad- 

 ditional knowledge of the genera, and in the significance of the forma- 

 tion and nature of the species, to sanction the appellative more peculiarly 

 applicable. If selecting one, it is by no means for the purpose of dero- 

 ffatina: from the correctness of another. 



§ 1. Cellularia (notamia) loriculata — Coat of Mail Coralline. — 

 Plates XLIII., XLIV. — This product occurs in large, thick massy tufts, 

 several inches high, and several inches across, so dense and confused, that 

 its peculiar structure must be ascertained from smaller specimens. I re- 

 gret that my inability to procure those of considerable dimensions of 

 suitable form, though an abundance of others may be had, compels me 

 to leave the best illustrations for a supplementary Plate. A few other 

 subjects are under similar circumstances; some of the Sertularia; were 

 sought for above ten years before obtaining specimens for the most satis- 

 factory representation. 



The Cellularia loriculata generally assumes somewhat of a conical 

 fio-ure, whence the longest parts diverge from the lower half of the stem ; 

 they shorten upwards, and terminate almost in a point or obtuse vertex. 

 This seems the natural configuration; and even when luxuriance and 

 bushiness restrain the regular shape, wherever the extremities are free, 

 they are so distinguished. — Plates XLIII., XLIV. figs. 1, 2. 



I have not observed the root of the adults of circumscribed or definite 

 form, farther than as a scale of very small diameter. The stem for some 

 short distanee above it exhibits irregular articulations, which are not evi- 

 dent in every specimen. — Fig. 3. Alternate branches with their subor- 

 dinate parts, the whole tending to the same general formation, originate 

 from the stem, fig. 4. enlarged. The cells, very low, scarcely projecting 

 from the level where situated, have an elliptical orifice ; they are arranged 

 nearly in pairs, opposed back to back, from which peculiar feature, Dr 

 VOL. I. 2 G 



