ON THE FOSSIL PHYLLOPODA OF THE PALEOZOIC ROCKS. 69 



E. Peachii, Jones, 1870. Edinburgh, Scotland. 

 E. stnata, var. tenuipectoralis, Jones, 1883. Western Siberia. 

 E. Nathorsti, Jones, 1883. Possibly of Upper-Devonian age. Spitz- 

 bergen. 



4. Devonian. 



Esiheria memhranacea (Pacbt, 1849), Jones, 1862. 



E. pulex, Clarke, 1882. Western part of the State of New Tprk. 



This last- mentioned Esiheria is very small, but in shape it is some- 

 what like the recent E. compressa, Baird. In its shape it also approximates 

 to E. rimosa, Goldenberg, ' Foss. Saarbriick.,' Part II. t. 2, f . 18 ; and to 

 E. triangularis, Emmons. 



Professor Dr. F. M'Coy long ago intimated that some fossils described 

 as belonging to the Mollusca may really be Entomostraca, ' Synops. 

 Carbonif. Foss. -Ireland,' 1842, p. 164. Some suggestions in this direc- 

 tion were offered in the ' Monogr. Foss. Estherias,' 1862, p. 13. 



It may be useful to notice that it is highly probable that, as Geinitz 

 has suggested (' Neaes Jahrb.,' 1864, p. 654), the Cardinia nana of 

 De Koninck, ' Foss. Carbonif. Belg.,' p. 71, t. 1, f. 6 a, b, is an Estheria 

 (referred to also in the ' Monograph Esth.,' I.e.). It was taken from the 

 coal-shale at the Battery Coal-pit, near the citadel at Liege. 



The Cyclas nana, Ludwig, 'Palseontographica,' vol. x. 1861, p. 21, t. 3, 

 f. 10, from strata regarded as Permian (Dyadic) by Giimbel, near Mane- 

 bach, not far from Ilmenau in Sachsen- Weimar, is also probably an 

 Estheria. See Geinitz, ' N. Jahrb.,' 1864, p. 654 ; also Karl von Fritsch, 

 ' Zeitschr. d. g. Ges.,' vol. xii. 1860. This little fossil Ludwig thought to 

 be the same as the Cardinia nana of De Koninck ; but it is evidently very 

 different in shape, being nearly orbicular, whilst the other is obliquely 

 sub-elliptical. 



Pullastra? striata in Portlock's 'Report Geol. Londonderry, &c.,' p. 

 440, t. 36, f. 13, has somewhat the aspect of an Estheria. This form will 

 have to be carefully studied in connection with E. Adamsii, E. punctaMlla, 

 and other punctate shells, formerly looked upon as MoUuscan, before 

 definite conclusions can be arrived at. 



ABDENDUM. 



Professor C. Malaise, of Gembloux, has to-day shown us several 

 specimens oWaryocaris ' Wrightii (?) from the Lower- Silurian (Cambrian) 

 slates of Hay and Nanuine, Belgium; and with one of them is an un- 

 doubted trifid caudal appendage. Each of the three spines is sharply 

 lancet-shaped, and they are of nearly eqaal size. — August 17, 1887. 



' See the First Report, L883, pp. 217 and 221. 



