32 NOETLING : MARINE FOSSILS FROM MIOCENE UPPER BURMA. 



there is certainly no difference in the sculpture between the 

 specimens from Burma and K. Martin's type from Java. Martin 

 specially mentions that the regular net-like sculpture characterises 

 this form ; this is however not so constant a feature. I have some 

 specimens which exhibit that character very well, others in a 

 lesser degree. It is particularly this character which was to dis- 

 tinguish R. raninoides from R. junghuhni ; but as certainly R. viper- 

 ina from Burma is identical with R. junghuhni ; and as in the first 

 one the regular net-like sculpture is somewhat variable, I am of the 

 opinion that R. junghuhni and R. raninoides are identical, and must 

 be considered as the same species as R. viperina from Western India. 

 After comparing the fossil forms with the living Ranella tuber' 

 cularis, Lam., I am certain that they are identical with that species 

 because I cannot discover the slightest difference, either in shape 

 or in sculpture. 



NASSA CAUTLEYI, d'Archiac, Plate VII, Fig. 2— 4*. 



1853. Buccinum Cautleyi, d'Archiac and Haime, Description des Animaux fossils 



du groupe nummulitique de l'lnde, page 320, plate XXX, 

 figs. 12, 12a and 13. 



The shell is fusiform, and attains a length of 19 to 20 mm. It con- 

 sists of seven or eight whorls, the first six are flat, low and only 

 gradually increase in height ; the last one is slightly ventricose, forms 

 about frds of the total length, and ends in a short truncated anterior 

 canal. Aperture rather narrow and ovate ; inner lip thin ; outer lip 

 callous and denticulated within ; the whorls are covered with strong 

 longitudinal ribs, which increase in strength in the centre, and fine 

 regular striae, well marked towards the top and the basis of the 

 last whorl, where the centre appears more or less smooth to the 

 naked eye. 



Locality. — Very common at Minbu, rare at Yenangyat. 



Remarks. — The species from Burma agrees so well with the 

 one from Hala, that there is little doubt that they are iden- 

 tical. The chief characters — regular, fairly strong and equidistant, 



( 32 ) 



