l894-] NEW-YORK MICROSCOPICAL SOCIETY. 141 



Amphistegi?ia fleuriaiisi Reuss. 1861. Sitzungsb. d. K. Akad. 



Wiss. Wien. xliv. 308. pi. i. figs. 10-12. 

 Operculina irregularis Reuss. 1864. Denkschr. d. K. Acad. 



Wiss. Wien. xxiii. 10. pi. i. figs. 17, 18. 

 Operculina granulata Giimbel. 1868. Abhandl. d. K. bayer* 



Akad. d. Wiss. II. CI. x. dd^. pi. ii. fig. iii. a, b. 

 Operculina complanata,vz.x. granulosa '^x^.^^. 1884. Report on 



Foram. H. M. S. Challenger. Zool. ix. 743. pi. cxii. figs. 6, 



7, 9, 10. 

 Operculina cotnpla7iata, var. granulosa Woodward and Thomas. 



1885. Geol. Nat. Hist. Survey Minn. 13th Ann. Report. 



176. pi. ii. fig. 36. 

 Operculina compla^iata, var. gratiulosa Woodward and Thomas. 



1893. Final Report Geol. Nat. Hist. Survey Minn. iii. 46. 



pi. E. fig. 38. 



Test. It is uniformly smaller than complanata j its parti- 

 tions, which form a slight relief upon the surface of the very thin 

 shell which encloses the convolutions, are proportionally more 

 approximate. This species is very flat, and is made up of three or 

 four spirals. It carries on its surface on each side a number of 

 fine granulations, which are found irregularly distributed upon 

 the little elevations which correspond to the interior partitions. 

 These projecting points, scarce upon the last convolutions, are 

 found crowded towards the centre in many individuals. 



Locality. Stratton's marl pit, near Mullica Hill, in the shell 

 layers of the green marl. Rare. New Egypt, in the green marl. 

 Rare. 



