302 F. R. Cow2:)er Reed- 



Woodward ^ at the same time described and figured a new species, 

 Homalonotus goniopygcBiis, from Smugglers' Cove, and a pygidium 

 which he attributed to H. Champernownei. 



In 1901 Whidborne^ described some supposed Lower Devonian 

 fossils from the site of the Pengelly Memorial Hall, Torquay, but 

 Messrs. Jukes-Browne and E. B. Newton^ subsequently disputed 

 the accuracy of his determinations and regarded the fauna as 

 indicating Middle Devonian beds. With the latter conclusion the 

 present author is compelled to agree. 



Note. — In the following descriptions of the species the letter S. 

 denotes that the specimen is in the Sedgwick Museum, while the 

 letters M.P.G. and T. respectively indicate the Jermyn Street Museum 

 and the Torquay Museum. The index numbers following these 

 letters refer to the individual specimens or tablets in the collections. 



CRUSTACEA. 



Genus Homalonotus. 



Homalonotus {Digonus) goniojyygceiis Woodward. 

 1882. Homaloyiotus goiriopygceus Woodward, Geol. Mag., p. 157, Pi IV, 



Fig. 1, ? 2. 

 1918. Homalonotus {Digonus) goniopygceus Reed, Geol. Mag., pp. 317, 324. 



The original sjDecimen, consisting of a pygidium, which is in the 

 Sedgwick Museum, was described by Dr. Woodward as follows : 

 " The axis is very broad in proportion to the lateral portions, and 

 the division between them is but slight. Breadth of axis at proximal 

 border 6 lines. It is composed of from 12-13 annuli or coalesced 

 caudal rings, the corrugations of which are slightly bent downwards 

 on each side and continued to the border of the pygidium as well- 

 developed side-ribs. The costae diminish in size and strength from 

 the proximal border, till they disappear near the hinder part of the 

 axis about 4| lines from the extremity, which is smooth or nearly so. 

 There are no spines or other ornamentation on the surface of the 

 specimen." 



A few additional remarks may here be made on this pygidium. 

 It has an elongated, triangular shape, but its lateral edges are hidden 

 by matrix, and its tip is slightly broken. The convexity of the 

 general surface is gentle at the proximal end, but increases somewhat 

 towards the tip. The sides of the pygidium converge at first at an 

 angle of about 45 degrees, but behind the pleurae the rate of tapering 

 of the pygidium is rather slower. There are only 11-12 distinct 

 rings on the axis, the posterior fifth part of the axis having the 

 narrow rings only faintly marked, and finally becoming obsolete. 

 The axis is very greatly convex in front, and tapers rapidly, but 

 becomes more convex and tapers more slowly towards its indistinct 

 tip, which forms a blunt point circumscribed by a weak furrow, and 



» Woodward, ibid., 1882, p. 157, PI. IV, Figs. 1-3. 

 2 Whidborne, ibid., 1901, pp. 533-40, PI. XVIII. 

 ' Jukes-Browne & Newton, ibid., 1914, pp. 311-18. 



