694 ME. F. CHAPMAN ON THE BABGATE BEDS OF STJEEEY. [Nov. 1 894, 



Haplophragmium agglutinans, Brady, ' Challenger ' Rep. vol. ix. 

 (1884) p. 301, pi. xxxii. figs. 19-26. 



The example found is very characteristic, and exactly coincides 

 with d'Orbigny's figures of the Tertiary specimens ; it is easily dis- 

 tinguished from the other crosier-shaped species by the smallness 

 and compression of the spiral portion of the test. The occurrence 

 of this species in Neocomian beds helps to complete the record, from 

 its first appearance in Lower Carboniferous rocks, through all im- 

 portant fossiliferous strata to the present time. 



One specimen from Bargate Beds, Holloway Hill. 



4. Haplophbagmitjm Htjmboldti (Keuss). 



Spirolina Humboldti, Reuss, Zeitschr. deutsch. geol. Gesellsch. 

 vol. iii. (1851) p. 65, pi. iii. figs. 17, 18. 



Haplophragmium Humboldti, Beuss, Denkschr. Ak. Wiss. Wien, 

 vol. xxv. (1865) p. 119, pi. i. figs. 1-4 ; Hantken, Jahrb. ungar. 

 geol. Anstalt, vol. iv. (1875) p. 11, pi. ii. figs. 3, 4. 



This form is easily recognized by the cultration of the spiral portion 

 of the test, that feature distinguishing it from the closely-allied 

 form H. irregular e (Romer). It has previously been recorded from 

 various strata of Tertiary age. 



One example in the siliceous residue from the Bargate limestone, 

 Littleton. 



5. Haplopheagmittm iebegttlaee (Romer). 



Spirolina irregulare, Romer, ' Verst. nordd. Kreidegeb.' 1840, 

 p. 98, pi. xv. fig. 29. 



Haplophragmium irregulare, Beuss, Sitzungsb. Ak. Wiss. Wien, 

 vol. xl. (1860) p. 219, pi. x. fig. 9, pi. xi. fig. 1. 



This species has been noted from various Cretaceous beds in 

 North Germany and Bohemia. 



One specimen in siliceous residue from Bargate limestone and 

 three in clay of Bargate series, Littleton. 



6. Haplopheagmittm foliacetjm, Brady. 



H foliaceum, Brady, ' Challenger ' Eep. vol. ix. (1884) p. 304, 

 pi. xxxiii. figs. 20-25. 



The specimens met with in the Bargate Beds resemble the recent 

 specimens of Dr. Brady in the extreme transparency of the thin 

 arenaceous test ; but they are probably arrested forms of the species, 

 since the Neocomian specimens do not exhibit the crosier-shaped 

 form caused by the linear arrangement of the later chambers. 



Two specimens from clay of Bargate series, Holloway Hill. 



7. Haplopheagmittm emaciatum, Brady. 



H. emaciatum, Brady, ' Challenger ' Rep. vol. ix. (1884) p. 305, 

 pi. xxxiii. figs. 26-28. 



A single specimen was found which evidently must be referred 

 to the above species, since the coiling of the chambers is evolute ; 



