GEOGEAPHICAL DISTEIBUTION, ETC. 289 



' Challenger.' This material has yielded in the 

 hands of Dr. Brady and others no less than 269 

 species and varieties of the Foraminifera alone. 

 Concerning this Brady says : ' Amongst the many 

 rare forms are the following : — Lagena spiralis, 

 Lagena Hertivigii, and Lagena Scliulzeana ; Gristel- 

 laria gemmata and Cristellaria tricarinella ; Sagraina 

 limhata ; Pulvinidina 'procera and Pulvinulina 

 Schreibersii ; TruncatuUna. j^^'^^^'^cta^ Bupertia 

 crassitesta, Textularia crispata, Textularia folium.^ 

 and Textularia transversaria ; Pavonina, flahelli- 

 forniis, Chrysalidina climorpha, Spiroplecta a?inectens, 

 Cassidulina calahra, Cornuspira- sulcata, and Cornu- 

 spira carinata.' 



The dredgings made by the Coral Eeef Expedi- 

 tion round Funafuti, in the Pacific, have yielded 

 an even more extensive fauna than the above, for 

 the number of species found there is over 300, 

 amongst which many large reef-living species are 

 conspicuous, such as Carpenteria rhap)hiclodenclron, 

 Polytrema planuin, and Gyclochjpeus Carpenteri. 

 The beach sands of the coral islands in the Pacific 

 are sometimes entirely composed of a few genera of 

 Foraminifera in extraordinary abundance, such as 

 Ampliistegina Lessonii, Heterostegina dejJO'essa, Poly- 

 trema miniaceum, Tinoporus haculatus, Orhitolites 

 complanata, Carjjenteria monticiilaris, Gyjmna glohu- 

 kcs, Galcarina hispida, and Miliolina reticulata. 



The Shore Sands of temperate and colder areas 

 have a fauna peculiar to themselves. The dis- 

 tribution of the various genera and species is depen- 



u 



