SIPHONACE.E. 21 



reduced to maiuillteform tubercles, the upper more perfectly formed, ellipsoidal, siiclike, 

 and mucronulate. The branch, including its ramenta, is not more than a line in 

 diameter. The substance is rather rigid, and is horny when dry. The colour is dull 

 green, inclining to olivaceous. 



I have much doubt whether this plant, which was originally described and figured by 

 Turner, be permanently distinct from the following, of which it has very much the habit, 

 but from which it differs, at least in typical specimens, by the more numerous rows of 

 the ramenta and their more ellipsoidal shape. Specimens however vary in both these 

 respects, and I could be well content to uuite both forms under one specific name. 



Plate XXXIX. A. Fig. 1. Caulerpa ericifolia, the 7iatural size. Fig. 2, small 

 fragment of a branch with its ramenta. Fig. 3, a ramentum ; the latter figures 



magnified. 



8. Caulerpa ciipressoides, Ag. ; surculi robust, naked and glabrous ; frond shortly 

 stipitate, irregularly much branched ; branches scattered, once or twice compounded, 

 set with short, conoidal, mucronate, sub-biforious or bifarious ramenta. Ag. Sp. Alg. 1, 

 p. 441. Chauvinia ciipressoides, Kiitz. Sp. Alg. p. 497- Trevis. I. c. p. 137. Fucns 

 cupressoides, Esper. t. 161. Turn. Hist. t. 195. (Tab. XXXIX. B.) 



Hab. Key West, with the preceding. P)'of. Tuoiney. (v. v.) 



Except in the less imbricated, di-tristichous, and shorter ramenta, this species does not 

 differ from C. ericifolia. But these characters are variable. If the two species be united, 

 the name ciipressoides, as the older, must be preserved. Both forms are natives of 

 the West Indies, and of the Pacific Ocean. C. ericifolia was first brought from 

 Bermuda ; and C. ciipressoides from St. Croix. 



Plate XXXIX. B., Fig. 1. Caulerpa ciipressoides, the natural size. Fig. 2, apex 

 of a branch with tristichous ramenta. Fig. 3, portion of another branch with disti- 

 cIkjus ramenta. Fig. 4, a ramentum ; the latter figures magnified. 



9. Cau;lerpa paspaloides, Bory. ; surculi robust, naked and glabrous ; fronds with a 

 long naked stipes, flabellately branched, the branches once or twice forked, or simple, 

 fastigiate, densely beset in 3 or 4 ranks, with plumose, patent or recurved ramenta ; 

 ramenta sid>bipinnate, pinnos opposite turned to one side, subulate or mucronulate, 

 mostly pectinated with similar mucronulate pinnules on their inferior sides. Chauvinin 

 paspaloides, Bory, Coq. p. 205, tab. 23, fig. 1. Kiitz. Sp. Alg. p. 500. Trevis. 

 in Lin. 22, p. 137- Caulerpa Wurdema7ini, Harv. J/^S.— Var. I3- ramenta simply 

 pinnate, the pinnae very long and straight, destitute of pinnules. 



Has. Key West, abundantly. Dr. Wurdemann, W. H. H., Frof. Tuoniey, Mr. 



