l8 NOETLING : MARINE FOSSILS FROM MIOCENE, UPPER BURMA. 



Remarks .—This species varies a good deal ; the specimens from 

 Burma seem to be intermediate between d'Archiac's figs. 13 and 

 14; the basis of the Burma specimens perfectly agrees with fig. 14a, 

 while the upper side is identical with fig. 13. 



As regards the general shape, they fully agree with Sowerby's 



figure. 



The form is apparently a near relative of the living Solarium per- 

 spectivum, but it seems that the latter has a higher spire, while the 

 fossil form is more depressed. 



SOLARIUM CYCLOSTOMUM, Menke, Plate IV, Fig. 7-7*1. 



1853. Solarium euomphaloides, d'Archiac and Haime, Desc. des Anim. foss. du 



groupe nummulitique de l'Inde, page 289, pi. 

 XXVI, fig. IS a, b, c. 



One single specimen of this species has been found, which is 

 however, sufficiently well preserved to permit its determination. 

 The orbicular shell consists of five rounded whorls which are separated 

 by a distinct suture; on the upper side the whorls are flat, and are 

 nearly all lying in one plane. On the lower side they are inflated, form- 

 ing a deep and broad umbilicus. The whole surface is covered with 

 fine revolving ribs which are traversed by oblique striae which by 

 producing small nodules, make the revolving ribs look like strings of 

 minute beads ; on the upper side there are 6 to 7, on the lower side 

 about 9 of these strings ; diameter 8 mm, 



Locality. — Very rare at Minbu. 



Remarks. — It seems that the specimens from Burma do not reach 

 the same size as those from India ; this may, however, be an exception 

 as it is difficult to judge from a single specimen only. On com- 

 parison with the living Solarium cyclostomum ) Menke, I find that it 

 agrees so well in every way with the fossil Sol, euomphaloides % 

 d'Arch, that the two species must be considered as identical. 



DISCOHELIX MINUTA, Spec, nov., Plate IV, Fig. 8— 8a. 



The only specimen which serves for the description is fairly well 

 preserved, although it seems that it is rather crushed in one direction 

 ( 18 ) 



