Dr. Arnott on some new or rare Indian Plants, 85 guineus : a name first suggested for it by Mr. Jenyns in his ^ Catalogue of British Vertebrate Animals/ and referred to as a synonym for the fourth species of Syngnathus in his ^ Ma-nual of the British Vertebrate Animals/ page 487. The British Syngnathi, as suggested by Mr. Jenyns, con-sist of 6 species : 2 marsupial pipe-fish, S. Acus and S. Typhle, having true caudal fins ; 4 ophidial pipe-fish, which may be again divided into 2 sections, the first of which contains 2 spe-cies, S. cEquoreus and >S^. anguineus, having each a rudimentary caudal fin ; the second section also containing 2 species, S, Ophidion and S. lumbriciformis, in which there is no rudi-mentary caudal fin, the round tail ending in a fine point. In the recent works on British Fishes, one by Mr. Jenyns the other by myself, we had considered the figure of Bloch^s Ophidion as representing the true Ophidion of Linnaeus, which as here admitted is not the case : Mr. Jenyns has described the true Ophidion under the name of lumbriciformis, and I inserted the true lumbriciformis but omitted the true Ophidion altogether. I acknowledge with pleasure my obligations to M. Fries for setting me right. Ryder Street, Feb. 18, 1839. X. — Descriptions of some new or rare Indian Plants, By G. A. W. Arnott, Esq., LL.D. [Continued from p. 23.] Balsam ODENDRON, Kunth {Burseracece), In the ^ Prodromus Florae Peninsulae Indiee Orientalis^, i. p. 1 76, Dr. Wight and I united this as a subgenus to Protium, and it still appears to me doubtful if the two be separated by sufficiently important characters : the habit is, however^ very different. In consequence of the addition of several new spe-cies, the character given by Dr. Wight and me, will require to be slightly altered, as follows : Calyx late vel tubuloso-campanulatus : torus disciformis in fundo calycis ovarium cingens, externa inter singula stamina verrucula ele-vata instructus : stamina octo : drupa ovata : nux obtusa angulata. From this it is obvious that the shape of the calyx and nut
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