294 A. EARLAND OX A LIST OF FOSSIL BARBADOS RADIOLARIA. 



Plate 30. 



FIG. 



1. Astromma pentactis . . Pentactura pentactis. H. . 479 

 (In outline only, the specimen 



having been lost.) 



2. Astromma Pvthagorae . . Trigonactura pythagoras. H. . 471 



3. ,, Aristotelis . . Astractura democriti. IT. . 477 



4. „ ,, . . „ aristotelis. H. . 476 



^ „ . , ( Hymeniastrum pythagoras. -Ehr. 531 



o. Hj-meniastrum pythagorae < „ 4. it 4-7, 



J vj o ^Qj. Hymenactura „ H. . 474 



Addition to Plate 30. 



Limestone from County Antrim, Ireland, under the influence of volcanic 

 action. 



Fig. a. Finely polished fragments of marble of the natural size under glass, 

 with dark background. The cross marks the enlarged fragment. 



„ b. The indicated portion magnified 50 diameters. The cross indicates 

 the organisms, which in 



,, c. are drawn to a magnification of 100 diameters. 



The remaining figures in the thirty plates are drawn to a uniform 

 magnification of 300 diameters. 



Joarii. Qv^lci Mkroscoinad Club, Sa: 2, Vol. VlL, No. 46, Aprd 1900. 



