ON THE FOSSIL TBYLLOPODA OP THE PALEOZOIC ROCKS. 343 



The Fossil Phyllopocla of the Pakwzoic Rochs. — Thirteenth Eeport of 

 the Committee, consisting of Professor T. Wiltshire (Chairman), 

 Dr. H. Woodward, and Professor T. Rupert Jones {Secretary). 

 (Draivn vp by Professor T. Eupert Jones.) 



Contents. 



SECTION PAGE 



I. 1889-1892. Silurian Phyllopoda (?) .... 343 

 II. 1885-1894. Camhrian Phyllojmda {1) . . . .343 



III. 1889. Rhachura venosa 344 



IV. 1893. Rhinocaris columMna 344 



V. 1895. Emmelezoe Lindstroemi 344 



VI. 1895. Pinnocaris Laprvorthi 344 



VII. 1895. Ceratiocaris reticosa 345 



VIII. 1895. Lingulocao-is 345 



IX. 1896. Devonian Species of Ceratiocaris (?)... 345 



X. 1896. Etitomocaris and Ceratiocaris .... 345 , 



XI. 1896. Echinocaris Whidbomei 345 



XII. 1896. Caryocaris 346 



XIII. 1897. Estheria Pamsoni 346 



§ I. 1889-1892. Anomalous Silurian Phyllopods (?) from Germany and 

 America. — In the ' Sitz.-Ber. Gesell. naturf. Freunde zu Berlin,' 1890, 

 p. 28, Dr. A. Krause described a small fossil carapace of doubtful alliance, 

 but possibly related to the Phyllopods, from the North-German gravel of 

 Scandinavian Beyrichia-limestone (Upper Silurian). In the 'Zeitsch. 

 Deutsch. Geol. Gesell.,' vol. xliv, 1892, p. 397, pi. xxii., figs. 19 ct-c. Dr. 

 A. Krause redescribed and figured this anomalous little fossil. 



Its lateral moieties are not free, separate valves, but united by an 

 antero-dorsal suture for a third of its length, and by an antero-ventral 

 suture for half of its length, the posterior region remaining open at the 

 edges. It also shows in front a round apertui-e, with a sulcus formed by 

 the somewhat inverted edges below it. The test is nearly oval and com- 

 pressed ; thickest and subacute in front ; bearing a small, low, subcentral 

 swelling. The surface has some reticulate ornament along the margins 

 for the most part, succeeded by linear, radiating, and concentric sculpture 

 towards the more convex area, which is finely punctate. It is 6 mm. 

 long, 4 mm. high, and 1*5 mm. thick. 



In S. A. Miller's ' North- American Geology and Palaeontology,' 2nd 

 edition, 1889, p. 549, fig. 1009, an allied form is described and figured as 

 Faheria anomala, n. sp. et gen., from the Hudson-River group, Ohio 

 {Lower Silurian). This has evidently some analogy to the foregoing 

 Upper Silurian form. It has a compressed, ovoidal, smooth shell, con- 

 sisting of two moieties, partially sutured above and below, and is rather 

 smaller than the German specimen. 



§ II. 1885-1894. Cambrian Phyllopoda (?).— Dr. G. F. Matthew, of 

 St. John, New Brunswick, has discovered several very small organisms 

 in the Cambrian rocks of North-Eastern America, some of which he 

 regards, with doubt, as having been carapace -valves of Phyllopodous 

 Crustaceans. He has described and figured them in the ' Transactions of 

 the Royal Society of Canada.' 



To this group of small subtriangular valve-like bodies, obliquely semi- 



