30 NOETLING: MARINE FOSSILS FROM MIOCENE, UPPER BURMA. 



There is, however, another form which is closely related to, if 

 not identical with, T, davidsoni^ and this is Tritonium samaranganum, 

 K. Martin. 1 The latter form exhibits exactly the same ornament- 

 ation of the surface, particularly the horizontally extended nodules 

 on the longitudinal ribs, and I at first felt inclined to consider 

 both species as identical. Martin states, however, that two 

 rows of nodules become prominent above the others, in T. samar- 

 anganum, a character which cannot be traced in T. davidsoni, where 

 all the nodules are of equal strength ; on the other hand it must be 

 mentioned that, although this feature has been mentioned in the de- 

 scription of T, samaranganum, the figure hardly shows it ; in fact to 

 judge from the figure the difference in the strength of the single 

 rows of nodules, hardly exceeds that noticed in T. davidsoni. It 

 may be possible that the future may prove the identity of the two 

 forms, but for the present we must keep them separate notwith- 

 standing the close relationship. 



K. Martin specially lays stress on this character, when distinguish- 

 ing T. samaranganum from T. favanum, in which latter species 

 thvre is no difference in the strength of the nodules. I am of 

 opinion that, considering the sculpture of the shell, T. javanum 

 must be considered identical with T. davidsoni, if the above-men- 

 tioned distinguishing feature between T. samaranganum and T. 

 davidsoni really exists in such a marked way. 



TRITON PARDALIS, Spec, nov., Plate VI, Fig. 7— 8a. 



This pretty little species consists of six moderately ventricose 

 whorls, of which the last one is of about the same height as the 

 spire ; the total height is about 16 mm. ; the sculpture consists of fine 

 flat revolving ribs, which are separated by interstices of about the 

 same breadth as the latter, containing from I to 3 filiform revolving 

 lines ; on the spire there are also longitudinal ribs, which grow fainter 



1 K. Martin, Beitrage z. Geol. Ost Asiens and Australiens, vol. Ill, page 132, 

 pi. VII, fig. 133. 



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