40-4 Messrs. T. II. Jones and J. W. Kirkby on Munster's 



the microscope, when thrown down on black paper they are of 

 a whitish grey. 



Plate XIV. fig. 13. a. ascus with paraphysis, magnified; b. sporidia 

 more highly magnified. 



1062. P. (Helvelloidece) leiocarpa, Curr. I. c. p. 493, f. 6. 

 Cupula primum connivente, subglobosa, extus (prsesertim versus 

 marginern) aspera, fusco-vinosa, tenui, seinipellucida, basin versus 

 scepe pallida, deinum expansa, fere plana; hymenio olivaceo- 

 fusco ; sporidiis globosis, lsevibus. 



On burnt soil. Ascot, Rev. G. H. Sawyer, where this and 

 the preceding species were abundant in the autumn of 1863. 

 (Rabenhorst, I. c. no. 622.) 



Cup l|-2^ inches broad; hymenium at first pale, then dark 

 olive-brown ; sporidia uni- or biseriate, globose, perfectly even, 

 •0003-0004 inch in diameter. 



llesembling at first P. pustulata, Batsch. 



Plate XIV. fig. 14. a. ascus with paraphysis, magnified ; b. sporidia 

 more highly magnified. 



[To be continued.] 



XLIII. — Noies on the Paleozoic Bivalved Entomostraca. No. V. 

 Munster's Species from the Carboniferous Limestone. By 

 T. Rupert Jones, E.G.S., and J. W. Kirkby, Esq. 



[Plate XX.] 

 [Continued from vol. i. p. 257-] 



The earliest-described species of Carboniferous Bivalved Ento- 

 mostraca are those of Count Minister. In 1830 a memoir by 

 him appeared in Leonhard und Bronn's * Jahrbuch fur Minera- 

 logie/ &c. (pp. 60-70), "On some Fossil Species of Cypris 

 (Miiller, Lamarck) and Cythere (Miiller, Latreille, Desmarest)." 

 After noticing what was then known of fossil Cytheridce, the 

 author briefly describes (pp. 62, 64) fourteen Tertiary species of 

 Cythere*, and proceeds (pp. 65,66) to give similar brief descrip- 

 tions of eight species that he had collected from the Carboni- 

 ferous or Mountain Limestone at Regnitzlosan, near Hof, in 

 Bavaria. This limestone, he says, is characterized by Producti; 

 and " in the midst of it occurs a marly bed, oolitic in appear- 

 ance, but on close examination the oolitic bodies are found to 

 be organic remains ; few of them, however, are distinct and un- 

 injured. Among these are the Cytherce here mentioned, which 

 for the most part are found with the valves still united. Besides 

 these, there are in the same bed remains of small Corals, Cida- 



* These were figured and described, together with others, by Roemer, 

 Jahrb. f. M. u. s. w. 1838, p. 514, &c, pi. 6. 



