400 



Prof. T. E. Jones on the 



LII. — Notes on the Palccozoio Bivalved Entomostraca. — 

 No. XXIV. On some Silurian Genera and Species'^ 

 (continued). By Prof. T. Eupert Jones, F.E.S., F.G.S. 



[Plates XII. & Xni.t] 



In this paper the specimens in Messrs. Vine's and Smith's 

 Collections | not yet treated of will be described. 



Contents. 



I. Thlipsura J, & H., p. 400. 



1. corpulent a, J. & H., 



p. 401. 



2. tnbero.m, J. & II., p. 401. 



8. anf/idatd, sp. nov., p. 402. 



4. 2>Iicata, sp. nov., p. 402. 



4*. , var. unipimctata, 



nov., p. 403. 



8. Octonaria ? parado.va, sp. nov., 



p. 406. 



4. ?, sp.,p.407. 



III. Bollia, J. & H., p. 407. 

 1. auricidaris, sp. nov., 



p. 408. 

 2. interrupta, sp. nov., p. 



408. 



, var. hipunctata, IV. Pnmitin, J. & II., p. 408. 



4**. 



nov., p. 403. 

 5. v-scripta, J. & IL, 



p. 403. 

 II. Octonaria., gen. nov., p. 404. 

 1. octoformis, sp. nov., 



p. 404. 

 1*. , var. intoHa, nov., 



p. 404. 

 1**. ^ yar. simplex, nov., 



p. 405. 

 1***. ^ var. informis, 



nov., p. 405. 

 1**«*. ^ var. hipartita, 



nov., p. 405. 



— , var. persona, 



nov., p. 405. 

 1******. , var. monti- 



culata, nov., p. 406. 

 2. widosa, sp. nov., p. 406. 



1. ohliquipunctata, sp. nov., 



p. 409. 

 V. Moorea, J. & K., p. 409. 



1. Sniithii, sp. nov., p. 409. 



VI. Xestoleberis, G. 0. Sars, p. 410. 



1. corbuloides (J. & H.), 



p. 410. 



VII. Aichmina, J. & H., p. 410. 



1. ctisjndata, J. & H., p. 



411. 



2. bovina, sp. nov., p. 412. 



8. depressicornis, sp. nov., 



p. 413. 



4. brevicornis, sp. nov., p. 



413. 



VIII. Appendix, p. 413. 

 Number of the Specimens, p. 



413. 



IX. Explanation of the Plates, 



p. 415. 



I. Thlipsura, Jones & Holl, 1869. 



This Silurian genus of Ostracodes was defined in the Ann. 

 & Mag. Nat. Hist. ser. 4, vol. iii. p. 214. 



• For No. XXIII. see Ann. & Mag-. Nat. Hist, for March 1887, p. 177. 



t These Plates have been drawn with the aid of a grant from the Royal 

 Society for the illustration of Fossil Entomostraca. Mr. C. D. Sherborn 

 has kindly helped me in cataloguing, comparing, sketching, and measur- 

 ing the specimens. 



I Ann. & Mag. Nat. Hist. April 1886, p. 343. 



