214 SYSTEMATIC PALEONTOLOGY 



sea that fungi and insects perform on the land- — the removal of dead 

 organisms that otherwise would accumulate m vast quantities. In this 

 work they are aided, in most regions, either by certain boring Annelids 

 (Dodecacerea, &e.,) or by various boring mollusks (Lithodomus, Pholas, 

 Gastroclicena, &c), but the greater part of this work seems to be effected 

 by the sponges." Verrill, 1873. 



The borings of this species are very common in the oyster shells of the 

 Maryland Pleistocene. Some of the shells are so thoroughly honey- 

 combed that they fall to pieces when touched. 



Some of the borings found in the shells of Tertiary age may well be 

 those of this species. There is little doubt regarding the Pleistocene 

 forms and Professor Verrill has referred the borings in the oyster shells 

 from the Pleistocene at Sankoty Head to this species. In present seas it 

 has been found ranging from Cape Cod to South Carolina and locally 

 has been recognized at more northern localities. 



Occurrence. — Talbot Fokmation. Wailes Bluff, St. Mary's County; 

 Federalsburg, Caroline County. 



Collections. — Maryland Geological Survey, Johns Hopkins University, 

 U. S. National Museum. 



PROTOZOA. 



class RHIZOPODA. 



order FORAMINIFERA. 



Suborder VITRO-CALCAREA. 

 Family LAGENIDAE. 



Genus LAGENA Walker. 

 Lagena globosa (Montagu) 



Plate LXVI, Figs. 7-9. 



Yermiculum globosum Montagu, 1803, Test. Brit., p. 523. 



Lagena globosa Brady, 1884, Chal. Rept, vol. ix, p. 452, pi. lvi, figs. 1, 2, 3. 



Lagena globosa Bagg, 1898, Bull. Amer. Paleont., vol. ii, No. 10, p. 23. 



