322 Mr. T. Atthey on the Palatal Teeth of a Climaxodus. 



denticulated margin. The narrow portion of the surface is 

 ornamented with minute granulations ; the broad furrow is 

 striated in the direction of the length of the tooth. Three of 

 the teeth are somewhat shorter than the rest ; or, in other words, 

 the J have a more circular form. 



The largest tooth measures, including the projecting bony 

 process, an inch and a quarter in length, and is about seven- 

 eighths of an inch wide in the broadest part. The smallest 

 tooth is rather more than three-eighths of an inch long, and 

 very nearly the same in the broadest part. In the small spe- 

 cimens the groove at the broad end is nearly as large as the 

 remaining portion of the tooth. 



On comparing these teeth with the figure given by M^Coy 

 (British Pala30zoic Fossils, pi. 3 G. f. 5) of his Climaxodus 

 imhricatuSj they are found to agree in having the narrow por- 

 tion of the tooth ornamented with transverse ridges ; but a 

 further comparison cannot at present be made, as the figure 

 given by M^Coy was from a specimen broken at both ends. 



As it appears to be advisable to attach some name to this 

 interesting fossil, and seeing that it agrees in some essential 

 points with the genus Climaxodus .^ M'Coy, I propose to refer 

 it provisionally to that genus, and, further, to distinguish the 

 species which I have found at Newsham by the name of Cli- 

 maxodus lingucefor^nis^ 



Also I avail myself of the present occasion to announce that, 

 in addition to Climaxodus and the species already described 

 in former communications to the ^Annals,' several other in- 

 teresting forms have been obtained from the shale of the Low- 

 main seam, of which no notice has been given, the most im- 

 portant of these being the following : — 



Coelacanthus lepturus^ Ag. 



Several entire specimens have occurred, but usually in a 

 much disturbed state. Separate scales are not uncommon. 



Strepsodus sauroides^ Huxl. 



Two or three jaws of this species, with the teeth attached, 

 have been obtained, and numerous separate teeth. 



Gyrolepis Rankiniij Ag. 



Several specimens have occurred in a more or less complete 

 state of preservation. 



Phtysomus parvulus (young ?) . 

 A few entire specimens have occurred. 



