122 
that the present figures, from sketches contrihiited hy Prof. Jones, are accurate, 
lie remarks, in a letter to the Writer, that Carhonia “ is the only genus to 
which they are nearly allied.” 
Locality and Horizon. — Wollomlii Poad, ten miles south of West 
Maitland, Co. Northumherland {J. TFatcrhonse, M.A.) : — Upper Marine Series. 
Fam Uy.—C YPBIBINIDH. 
Ohs. — A species of Entomis was* recorded hy the late Prof, de Koninck 
under the name of E. Jonesi, from the Muree Rock, Upper Marine Series. 
It is allied to E. nitida, P. A. Roemer, of the German Devonian Rocks. 
Genus. — ENTOMIS, Unpert Jones, 1861. 
(Mem. Geol. Survey Scotland, No. 32, p. 137.) 
Entomis Jonesi, J)e Komncli. 
Entomis Jonesi, Do Koninck, Doss. Pal. Nouv.-Galles du Sud, 1877, Pt. 3, p. 34G, t. 21 
£. G, a and b. 
Sp. Char. — Carapace valves oval-ohlong, convex, a little attenuated 
anteriorly in outline ; dorsal margin nearly straight ; ventral margin curved ; 
anterior and posterior ends nearly equal, hut the latter probably someAvhat 
the larger; sulcus frequently indistinct, separating the valves into two 
unequal portions, the posterior the larger ; surface smooth. 
Ohs. — The sulcus in De Koninck’s figures is too long and broad, and 
should possess less dimensions. I have examined specimens from the tyjncal 
locality, and feel sure that we have both had before us similar specimens. It 
occurs on weathered surfaces of the Muree Rock, both as external impressions 
and internal casts, freely associated with the little bodies called hy De 
Koninck Folycope simplex. The present species differs from Entomis nitida, 
according to De Koninck, in the transverse and longitudinal measurements. 
Locality and Horizon. — Tokal Quarry, Paterson {Frof, T. fV. E. 
Farid, F.A.) : — Muree Rock, Upper Marine Series. 
