14 BRITISH FOSSILS. 



dipterini, seeing that it possesses all those structural peculiarities 

 which are common to these two families. In fact, as Hugh Miller * 

 originally pointed out in successive notices, Dipterus has the dorsal 



Fig. 9. 



Ixestoration of Dipterus (after Pander). 



fins placed far back ; acutely lobate pectorals and veritrals ;t no 

 branch iostegal rays, but jugular plates instead of them ; and a 

 single anal. The caudal extremity of the body tapers off to a 

 point, and has the lower lobe of the fin very much larger than the 



Fig. lO-t 



Dipterus. 



upper ; the scales are cycloid. Thus far, in fact, the definition of 

 Ctenododipterini agrees with that of the Glyptodipterini ; but the 



* See " Old Eed Sandstone," " Footprints of the Creator," and " Sketch Book of 

 Popular Geology." It is much to be regretted that Professor Pander should have been 

 wholly unacquainted with these works when he wrote his Monograph on the Ctenodo- 

 dipterini, and that he has consequently inadvertently failed to do justice to the great merits 

 of Hugh Miller, who made known almost the whole organization of Dipterus, and anti- 

 cipated the most important part of Prof Pander's labours in this field. 



f See Prof. Pander, 1. c. 



X The woodcut, fig. 10, represents the same specimen as that figured by Sir Philip 

 Egerton in " Siluria," ed. 2, p. 287, but of the natural size. It exhibits the characters of 

 the paired fins of Dipterus remarkably well. 



