8 DEVONIAN FAUNA. 



resemblance. Saccocaris major, Salter,^ is more similar in its general shape, and 

 has signs of concentric lines though differently arranged. 



Orthonotella Faberi, S. A. Miller," has a strikingly similar appearance, but is 

 much smaller and narrower, and has more numerous striae, and straighter and 

 more parallel upper and lower margins. This fossil Professor Rupert Jones noted 

 in 1883 as being probably a phyllocarid. 



Ceratiocaris ? sp. PI. I, fig. 6 [cf. PI. II, fig. 12]. 



Description. — Shape flatly convex, elongate, nearly regularly oval in outline. 



Size. — Length 5 mm., height 2 mm. 



Locallti/. — Two moulds, giving the two sides of one animal, from south-west 

 of Sloly, are in the Woodwardian Museum. 



Remarks. — These fossils are exceedingly indistinct, being a double mould so 

 divided that the edges are obscure. Almost the only marks I can observe 

 are a slight sharp notch or dent in the centre of one end, and slight indications 

 of a border on the lower margin, apparently becoming a broad, flat, angular rim 

 at one end. The test was perhaps rather thick. It appears to me that it is in 

 all probability the remains of a crustacean, and what can be seen of it is so 

 strikingly like Ceratiocaris ? simplex, Clarke,^ except in size, that it seems best to 

 treat it provisionally as probably akin to that fossil. 



Note. — Two somewhat similar convex and elegantly oval casts, diS'ering from 

 each other in contour and size, have a neat rim on the free margins. One of these, 

 PI. II, fig. 12, which is in Mr. Hamling's Collection from Croyde has about the 

 same dimentions as PI. I, fig. 6, and its surface apparently has a few indistinct 

 microscopical longitudinal ridges. 



It resembles CytUeropsis ? melonica, Barrande,* another very indistinct species, 

 which is somewhat undulated in its dorsal contour. The genus " Cytheropsis " has 

 been abandoned. 



The other specimen, which is in my Collection from Saunton Point, is about 

 ten times as large. 



1 1893, Jones and Woodward, ' Mon. Brit. Pal. Phyllop.,' p. 84, pi. xiv, fig. 6. 



2 1882, S. A. Miller, ' Journ. Cincin. Soc. Nat. Hist.,' vol. v, p. 117, pi. v, figs, 7, 7 b. 



3 1888, Hall, ' Pal. N. T.,' vol. vii, p. 165, pi. xxxi, fig. 2. 



* 1872, Barrande, ' Syst. Sil. Bohem.,' vol. i, Suppt., p. 509, pi. xxv, figs. 7, 8, Et. D. 



