102 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



few, very little inflated; sutures flush with the surface or very 

 slightly depressed, wall smooth; aperture short and broad with a 

 broad plate-like tooth partially closing the opening; color white. 



Length 0.50-0.85 mm. 



Distribution. — No extended list of references is given for this 

 species, although they are very numerous. A comparison of the 

 figures assigned to this species shows very considera})le diff'erenc-o in 

 the forms included under the name. I have restricted the records 

 in the western Atlantic as far as possible to those forms which are 

 broadest near the base and in which the later chambers reach to or 

 almost to the apical end of the chamber. Such specimens are most 

 common off the eastern coast of the Ignited States, from Cape Hat- 

 teras to Nova Scotia, but scattered specimens which may be referred 

 to this species occur farther south. 



Bulimina pyrula — material examined. 



BULIMINA PYRULA d'Orbigny, var. SPINESCENS H. B. Brady. 



Plate 20, fig. 2. 



Bulimina pijrula d'Orbigny, var. spinescens H. B. Brady, Rep. Voy. CkaUcnger, 

 vol. 9, 1884, p. 400, pi. 50, figs. 11, 12.— Flint, Rep. U. S. Nat. Mus., 1897 

 (1899), p. 290, pi. 37, fig. 1.— Chapman, Trans. New Zealand Inst., vol. 38. 

 1905, p. 89.— CusHMAN, Bull. 71, U. S. Nat. Miis., pt. 2, 1911, p. 78, figfi 

 128fl-c, 129 (in text); Bull. 100, U. S. Nat. Mus., vol. 4, 192], p. ]64, fig. 3 

 (in text). 



