F. R. C. Reed — Fauna of L. Devonian of Torquay. 341 



Notes on the Fauna of the Lower Devonian Beds of 



Torquay. 



By F. R. CowPER Reed, Sc.D., F.G.S. 



[Concluded from p. 306.) 



Homalonotus {Bicrmeisterella) Champernownei Woodward. 



1881. Homalonotus Champernownei Woodward, Geol. Mag., pp. 489, 528, 



PI. XIII. 



1882. Homalonotu'i Chamjwrnownei Woodward, ibid., p. 157, Pi. IV, fig. 3. 

 1918. Homalonotus {Biirmeisferdla) Champernownei Reed, Geol. Mag., 



pp. 315, 325. 



The diagnosis of this species given by Dr. Woodward in 1881 

 may be summarized as follows : Body with little or no signs of 

 trilobation. Glabella oblong, with three pairs of lateral spines 

 and three median spines, the anterior one apparently double. No 

 evidence of cheek-spines. Eyes nearer genal border than in H. 

 armatus, and rostrum more prominently developed. Thorax com- 

 'posed of thirteen segments with broadly expanded pleurae ; each 

 axial ring with pair of widely separated spines. Pygidium 

 imperfectly known. Total length of type-specimen 8 inches ; 

 breadth (measured along curve of thorax at widest part) 3f inches. 

 Spines on thorax about 1 inch apart. 



The pygidium from the same locality, which Woodward 

 described and figured in 1882 (op. cit. supra) as probably 

 belonging to this species, possesses about twelve rings on the 

 narrow axis and a smooth terminal piece ; the anterior rings 

 are ornamented with a double row of spines. The lateral lobes 

 show about six pleurae, which die out near the margin, and 

 a smooth, slightly elevated border is present. The extremity 

 of the pygidium is produced into a blunt spine or mucro. But the 

 specimen is poor and considerably broken and distorted, as the 

 original figure shows. 



There are two specimeias in the Torquay Museum, labelled " 33/6 

 Lincombe Slates, Lincombe Drive ", which, judging from the matrix 

 in which they are preserved and their state of preservation, come 

 from the same horizon, and of which the larger one at any rate may 

 be referred to the same species as Woodward's above-mentioned 

 pygidium. It is in good condition, though it only shows the right 

 side and axis, but the end of the pygidium is broken off. The 

 general shape is triangular, and it is pointed behind, the mucro 

 being stout and cylindrical, but of uncertain length. The axis, 

 which measures about 30 mm. in width at the front end, is elofigated 

 conical, convex, and well-defined by axial furrows ; it consists of 

 an annulated anterior portion, about 42 mm. long, composed of 

 eleven rings (of which the last three are not separated at the sides) 



