A CARBONIFEROUS FAUNA FROM NOWAJA SEMLJA. 175 



EUOMPHALID^E. 



Genus Straparollus de Montfort. 

 Straparollus dionysi de Montfort. 

 De Koninck, loc. cit., vol. iii., 1881, p. 120. 



This species, as interpreted by de Koninck, is represented by a few specimens 

 greatly dwarfed, the largest of which is only 1 mm. in diameter. 



Straparollus pileopsideus (Phillips). 



Phillips, Geology of Yorkshire, vol. ii., pi. xiii. fig. 6. 



The collection contains numerous specimens of a small species of Straparollus which 

 in every detail except size seems identical with Phillips' species ; they average only 

 5 mm. in diameter. 



Pyramidellid^e. 



Genus Loxonema Phillips. 



Loxonema Isevigatum (Eichwald). (PL II. fig. 46.) 



Lethxa Rossica, 1860, p. 1117, pi. xlii. fig. 6. 



The specimens which I refer to this species agree very well with Loxonema 

 Isevigatum, in particular in the smooth surface, the shape of the whorls, the linear 

 suture, and the tapering of the shell. They are, however, much larger, the specimen 

 figured, for example, measuring 4 mm. across the last whorl, a dimension which far 

 exceeds that of Eichwald's type. 



Loxonema suturale (Phillips) has the same general appearance, but its suture is 

 wide and deeply excavated. If my identification proves correct, this will be the only 

 Gasteropod in the collection actually larger than the type of the species to which it is 

 referred. 



Loxonema sp. a. (PI. II. figs. 48, 48a.) 



An incomplete specimen of four whorls, the total length of which is 4 "5 mm., is 

 characterised by a wide spiral angle and an ornamentation consisting, on the juvenile 

 whorls, of numerous fine lines, equidistant and raised, which, on the last whorl, are 

 arranged in sets of three separated by a smooth interval, the central line being a little 

 stronger than the two bordering it. 



TRANS. ROY. SOC. EDIN., VOL. XLVII. PART I. (NO. 7). 26 



