1886.] A. Barclay — On a new Species of Uredine parasitic, ^x. 223 



Tricenteus, Iv, 198. U. 



fairmairei, 198. Ugyops, Iv, 35. 



Triopsis, Iv, 33. percJieronii, 35. 



Tropiduchin^a, Iv, 37. Urophora, liv, 116. 



Tropiduchus, Iv, 38. hardwickii, 116. 



luridiis, 38. 



Tympanistria, Iv, 178. ^' 



Tympanoterpes, Iv, 178. XiPHOPiEus, liv, 83. 



pilosus, 83. 



VIII. — On a neiv Species of Uredine parasitic on Cedrus deodara,^ Loudon^ 



By Surgeon A. Barclay, M. B., Bengal Medical Service,. 



[Received Jan. 16th ;— Read Marcli 3rd, 1886.] 



(With. Plates VI. and VII.) 



This parasite is by no means conspicuous and is decidedly uncom* 

 mon. It was observed during May 1884 at two isolated localities be- 

 tween Simla and Wangtu in the Sutlej Valley, and I have searched in vain 

 for it among the numerous deodars about Simla. At one of the two 

 places in which it was found (Turanda), it occurred on several trees, but 

 at the other (between Sungri and Bagi), on two trees only. All the 

 trees on which it occurred were well-grown, and it was observed that 

 when a tree was attacked at all it was so very largely. A few needles 

 only of certain rosettes of needles are attacked, and these when the affec- 

 tion is fully developed curve downwards (fig. 1.) This curling of certain 

 needles gives the branches a curious frayed appearance by which alone 

 attention is generally attracted to the occurrence of the parasite. The 

 affected needles are not discoloured, but retain their normal green colour,. 

 The secidia protrude in great numbers on the upper surfa.ces of affected 

 needles, a single needle bearing sometimes as many as from 10 to 12 of 

 them. They are generally arranged in a single row on one or other side 

 of the middle line ; but occasionally, towards the distal end of the needle,, 

 a second parallel short row exists. To the naked eye no spermagonia 

 are visible, but with a field-lens they may be seen in great numbers 

 as minute points scattered all over the needle. 



The affection does not at first sight appear to cause much injury, but, 

 when it is remembered that an innumerable number of needles are affect- 

 ed, and that these fall early, the conclusion cannot be resisted that so large 

 a drain upon the assimilative organs of the tree must be attended with 

 29 



