ON THE FOSSIL PHYLLOPODA OF THE PALiEOZOIC ROCKS. 



63 



Seventh Report of the Committee, consisting of ]\Ir. R. Etiieridge, 

 Dr. H. Woodward, and Professor T, Eupert Joxes (Secretai-y), 

 on the Fossil Phyllopoda of the Palceozoic Rocks. 



VIII. Caridolitcs ( Ceratiocarls ?). 



IX. Bitlnjrovaris. 

 X. lAngulocaris. 



XI. Disc'nwcaris. 

 XII. Estheria and Fstheriella. 



1. Wenjuh)ff's. 



2. Zudivii/'s. 



3. Kratom's, 



4. Weiss' s. 



5. Scotch. 

 XJII. Ribeiria. 

 XIV. Proricaris. 



I. Aristozoe and Callizoe. — Mr. C. D. Walcotfc, of the U. S. Geol. 

 Survey, refers two Lower- Cambrian fossils, from the Olenellus-zone of 

 the eastern part of the State of New York, to Aristozoe, namely, A. Troy- 

 ensis (Ford), and A. rotundata, Walcott. ' Amer. Journ. Science,' ser. 3 

 vol. xxxiv. (1887), p. 193, pi. 1, figs. 8 and 9. Fig. 8 more nearly 

 approaches Barrande's Callizoe in appearance. 



To this closely allied genus, Callizoe, Barr., belongs Richter's Bey- 

 ricMa armata, 'Zeitsch. d. g. Ges.,' vol. xv., 1863, p. 672, pi. 19, figs 

 16-18 ; see ' Geol. Mag.,' 1881, p. 342. This is from the Upper Silurian 

 Tentaculite-beds of Thuringia. 



Linnarson's Lepenlitia primordalis, ' Kongl. Svensk. Vet.-Akad. Hand- 

 lingar,' vol. viii., 1869, p. 84, pi. 2, figs. 6-5, m, from the Olenus-Schist 

 of Westergotland, belongs to the same genus; and a closely-allied species 

 of Callizoe is represented in Angelin's unpublished ' Plate A ' of Scandi- 

 navian Entomostraca, figs. 9, 9a, 96, 9c. 



II. Bactropns. — The Badropus referred to in our Sixth Report on the 

 Fossil Phyllopoda > (September, 1888) has been figured and described 

 by the Rev. G. F. Wliidborne, P.G.S., in the First Part of ' A Monograph 

 of the Devonian Fauna of the South of England,' Palteontographical 

 Society, 1889, p. 43, pi. 4, fig. 21, as B. decoratus, a segment of the. 

 abdomen of an Aristozoe. 



III. Tropidocaris. — In the same Monograph, p. 44, pi. 4, fio-s. 20 a, h, 

 Mr. Whidborne also describes and figures a fragment of a phyllocaridal 

 cephalothorax, probably belonging to the genus Tropidocaris, Beecher. 



IV. Echinocaris. — Another and more perfect Phyllocaridal specimen 

 has been discovered in Devonshire, namely one half (left valve) and rather 

 more of the cephalothorax of an Echinocaris, by Mr. Dufton in the leaden- 

 blue shales of the Livfjula-squamiformis beds in a quarry near Sloly, close to 

 the three-milestone. on the Barnstaple and Ilfracombe road. The shales 

 here interstratified with very micaceous frilled sandstones, belong to the 

 Cucullrea-zone of tlie Marwood Beds. This Echinocaris, first recoo-nised 

 by the Rev. G. F. Whidborne, is related to E. socialis, Beecher,- but the 



• Peport Brit. A.<isoc. (for 1888), 1889, p. 175. 



- Second Geol. Siirr. Pc7ui.ii/lvania, vol. PPP, 1884, p. 10, pi. 1, figs. 1-12; and 

 Hall's Iteport Geol. N.Y., Pakcont., vol. vii., 1888, p. 174, pi. 20, tigs. 1-12. 



