fi A. SMITH WOODWAUD, U. DEVONIAN FISH-REMAINS. 



The otlier coarsely marked scales belong to different parts of 

 the abdoininal region; while tbe more fincly ridged smaller 

 scales, witli radiating lines of minute tubercles on the covered 

 area, agree with those of the caudal region in the type spe- 

 cimen.^ Similar scales have been described from the Upper 

 Devonian of Belgium under the names of II. dctvalquei and 

 H. inflexus]^ others are known from N. W. Russia; while 

 tliose named H. amcricanus,^ from the Catskill Formation of 

 Pennsylvania, are also essentiall}' identical with the typical 

 scales from Perthshire. 



It may be added that a characteristic dendrodont tooth 

 of rather small size (no. 12) also occurs in the collection 

 from East Greenland. It is shown in longitudinal section 

 (fig. 10), and may doubtless be refered to the same species 

 as the scales. 



II. Asterolepis iiicisa, sp. uov. Figs. 11—13. 



The dermal plates referable to a member of the family 

 Asterolepidai are all imperfect and more or less distorted. 

 It is possible, however, to recognise at least three characte- 

 ristic elements, and these seem to snffice for generic and 

 specific determination. The chief difficulty is to distinguish 

 between their overiajjping and overlapped margins ; for man}' 

 of them are bordered by a regular rim of reddish stain, 

 which sometimes obscures and at other times simulates the 

 actiial overlap. 



The most important plate is the anterior median dorsal, 

 of Avhich the best specimen (no. 1) is shown from the outer 

 aspect in lig. 11. This fossil is criished and mueh frac- 

 tured behind, bnt it seems to display the true börder of 

 the plate, and proves that it was gently convex, withont a 



^ Tlie pulilished figures of this specimen (Agassiz, «Poiss. Foss. V. G . 

 R.» pl. XXIII: MuRcmsoN, »Silar. Syst. » pl. II bis) do uot exhibit the cha- 

 racteristic radiating linos of niinutc tubercles on the covered area of the 

 ventral caudal scales and the hinder flank-scales, although those are well 

 shoAvn in the actual fossil. 



- Max Lohest. Ann. Soc. Géol. Belg. vol. XV. (188«), pi). 134, 141, pl. 

 I. fig. 5., pl. II., pl. III. tigs. 1, 3, 5, (3; pls. IV., V; pl. IX figs. 8—10. Re- 

 ferred to H. nohilissinms bv Tkaquair, in Brown & Buckley, »Vert. Fauna 

 Morav Basin» U^O'"'), p. 208.' 



ä J. Leidy, Journ. Acad. Nat. Sci. Philad. [-2] vol. III. (1856), p. ICf), 

 pl. XVI. figs. 9, 10, pl. XVII. figs. 1—3. 



