356 ON A SPINAL COLUMN OF LOXOMMA ALLMANNI. 



The minute structure of the teeth of Loxomma is admirably 

 shown in drawings from microscopic sections, by the most accu- 

 rate pencil of Mr. Dinning, one of our Secretaries, in the Plate 

 IV., Yol. Y., of the " Nat. Hist. Trans, of Northumberland and 

 Durham." 



The accompanying Plate, representing about a fourth part, 

 comprising eight vertebrae, of this specimen at the posterior end 

 of the longer fragment, and showing the peculiar ribs above 

 described, exhibits the part one-half of the natural size. It is 

 also from a drawing by Mr. Dinning. 



EXPLANATION OF PLATE VL 



Fig. 1. Vertebrse Nos. 25 to 30, one-half natural size. 



Fig. 2. Reduced drawing of the whole specimen, one-eighth natural size. 



