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 



