KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 19. N:0 4. 67 



Some of EHKENBEKGS Stroplioconi seem to be identical with our form. 



It is not common in the chalk-ooze, seldom attaining more than 0,20 mrn. in length. 



Fig. 95: small specimen. 



Fig. 96: the same seen in transmitted light. 



Figg. 97 98: two other very small specimens. 



Syn. Bulimina elegantissima D'ORB., 1839, Voy. Am. merid. 5, p. 51, t. 7, figg. 13 14. 

 WILLIAMS., 1858, Brit. rcc. For. p. 64, figg. 134 135. 



Presli var. elegantissima PAKK. and JONES, 1865, N. Atl. and arct. Oc.; Phil. Transact- 



155. 1, p. 375, t. 15, figg. 1217. 



elegantissima var. BRADY, 1878, An. Mag. Nat. Hist. (5) 1, p. 436, t. 21, fig. 12. 



subteres BRADY, 1881, Qu. Journ. micr. Sc. (u. s.) 21, p. 55. 



Botalina bulimoides Ess., 1851, Sept. Thon Berlin; Ztschr. deutsch. geol. Ges. 3, p. 77, t. 5, 



tig. 38 (ad hanc pertinens sec. PARKER and JONES 1872. 

 Robertina arctica D'ORB., 1846, For. Bass. tert. Vienne, p. 203, t. 21, figg. 3738 (sec. 



PARKER and JONES). 



? obliqua D'ORB., 1839, For. Craie blanc. Par.; Mem. Soc. geol. Fr. 4, p. 40, t. 4, 



figg. 78. 



Bulimina (Virgulina) squamosa D'ORB. 



Tab. IV, figg. 99108. 



I am not able to trace any sort of essential distinction between Bui. (Virgulina) 

 squamosa D'ORB. and Bui. (Virgulina) Schreibersiana Czjz. To judge by the representa- 

 tions of the latter given by different authors all agree in the shape and setting of the 

 chambers, being not quite so regular as in Bui. squamosa typica, which seems to be 

 more biserial in its growth, whilst the CZJZEKS form shews some tendency to a multi- 

 serial arrangement. 



The boundary between this species and Bui. (Bolivina) punctata D'ORB. is far 

 from being distinct. And yet Mr. D'ORBIGNY found himself compelled to distinguish 

 these two species as two genera. 



Bui. squamigera D'ORB. from Canary Islands comes very near to this species and 

 may be more allied to this than to Bui. pupoides D'ORB. 



The variation ot Bui. squamosa consists chiefly in the greater or less flatness and 

 breadth of the chambers and their greater or less elongation backwards. There is 

 also a slight difference in the size and arrangement of the pores and in the transpa- 

 rency of the shell. 



All our forms are from the chalk-bottom, where they are not unfrequent. 



Figg. 99 103: comes next to Virgulina Schreibersiana Czjz.; it is generally of a 

 dusky hue, so that. the pores are scarcely visible in transmitted light. It is not un- 

 common and attains a pretty good size. 



Fig. 104 : more textularia-forrned, of the same dull hue in transmitted light as 

 the preceding. 



Fig- 105: approaching Bui. (Boliv.) punctata D'ORB. 



