154 THE FOKAMINIFEEA 



These curious little fossils are mostly found in 

 washings from the rotten Carboniferous limestone. 

 Brady compares them with Botellina, from which, 

 however, they differ in the finer arenaceous structure 

 of the test. Carbojiiferous. (Plate 8, fig. H.) 



Genus SfncJicid, Beady. 



Test adherent or free ; composed of numerous 

 segments subdivided in their interior, or of an 

 acervuline mass of chamberlets, sometimes arranged 

 in layers, sometimes confused, or of a thick-walled 

 test with acervuline or labyrinthic structure, and 

 with the interior subdivided into numerous elongate 

 sinuous cavities (the latter characters especially 

 applying to fossils of the genus from the Ehsetic). 

 Apertures simple but irregular, terminal, or scattered 

 over the surface of the test. Texture subarenaceous, 

 composed of fine sand, sometimes admixed with 

 coarser material, and with a calcareous or chitinous 

 cement ; imperforate. Siluriaii tu Lias. 



Example. — S. coiigesta, Brady, ' Monogr. Carb. 

 and Perm. Foram.' (Pol. Soc), 187G, p. 117, pi. ix. 

 figs. 1-5. 



Of the many different modifications of this genus 

 the above species is taken as a simple example. It 

 is typically adherent, and usually grows round 

 certain objects of attachment. The areolation of 

 the shell structure and its method of growth caused 

 Dr. Brady to compare this species with the isomor- 

 phous hyaline form GyjJsina inhcerens. Brady's 



