Miscellaneous. 465 



modifications he gave several instances both in vertebrated and arti- 

 culated animals ; and in particular directed attention to such Longi- 

 corn Coleoptera as Erichsonia, Thaumasus (regarded by Olivier as a 

 species of Ips), Torneutes, Cantharocnemis, Sipylus, and Anoploderma 

 of Guerin, and a pentamerous Australian genus (Dorx pentamerd), 

 known to him only by Mr. Newman's description. 



Mr. White next proceeded to exhibit a small but valuable collec- 

 tion of Thibetan Coleopterous Insects, made by Dr. T. Thomson, 

 F.L.S., which he proposes hereafter to make the subject of a paper. 

 He remarked on the Mediterranean character of these denizens of 

 an Alpine plateau, such as exists at Iskardo, where they were col- 

 lected ; and in reference to the destruction of species, drew attention 

 to the remarkable genus Deucalion, a Longicorn insect discovered 

 on barren rocks near Madeira by Mr. Wollaston, F.L.S., which will 

 shortly be published in Mr. Wollaston's work on the Coleoptera of 

 Madeira. 



MISCELLANEOUS. 



ALPHEUS AFFINIS. 



To the Editors of the Annals of Natural History. 



Elmore Court, Nov. 10, 1854. 



Gentlemen, — On reading over my paper upon the new Alpheus 

 in the October Number of the ' Annals and Magazine of Natural 

 History,' I find that I have by some strange inadvertence overlooked 

 an incorrectness, which has the effect of exactly neutralizing a point 

 upon which I especially desire to insist. 



At page 277, commencing at the ninth line from the bottom, are 

 these words — " Differs in not having the moveable finger longer than 

 the immoveable one," which is exactly the reverse of the fact ; it 

 should have run thus — " Differs in not having the moveable finger 

 shorter than the immoveable one." — which constitutes one of the 

 main points of difference between my "A. affinis" and the "A. ruber " 

 of Milne-Edwards. 



In the description of "Alpheus affinis'"' in the following page 

 (278) the characteristics are correctly given. 



Begging you kindly to give insertion to this communication in your 

 next Number, 



I remain, Gentlemen, yours sincerely obliged, 



W. V. Guise. 



On a new species of Rock Kangaroo. By Dr. J. E. Gray. 



Yellow-legged Rock Kangaroo, Petrogale xanthopus. 



Pale brown, minutely grisled ; chin and beneath white ; streak on 

 side from the back of shoulder, and along the side of the face under 

 Ann. ^ Mag. N. Hist. Ser. 2. Vol. xiv. 30 



