BY C. HEDLEY. 285 



The first form of Adams' name was "Finella" ; this he afterwards 

 corrected as a printer's error for "Fenella," a name taken from 

 a character in one of Sir Walter Scott's novels. At first he con- 

 sidered it a Pyramellid, and later "found it to possess all the charac- 

 ters of a Rissoid." He gave no figures. Writers like Watson and 

 Melvill, who had access to Adams' specimens, ignored Fenella, dis- 

 tributing the species dealt with in Alaba and Rissoa, So that it 

 was hardly possible, from literature alone, for any one out of 

 Europe to recognise it. Under these circumstances I proposed for 

 8 true Fenella, the genus Obtortio, placing it, as Adams had done, 

 in the Pyramidellidae. I now accept Adams' reference of the genus 

 to the Rissoidae. From an inspection of the collection at South 

 Kensington, I am satisfied that Obtortio is an absolute synonym 

 of Fenella. But on pursuing the subject further it appears that 

 Fenella was already appropriated by an entomologist before Adams 

 proposed it in conchology. 



Diala suturalis A. Adams. 

 (Plate xviii., fig.54.) 



Monoptygma suturalis A. Adams, Proc. Zool. Soc, 1851 (1853), 

 p. 224; Id., Thes. Conch, ii., 1854, p. 819, PL 172, figs. 31, 32. 

 Diala suturalis A. Adams, Ann. Mag. Nat. Hist. (3) x., 1862, p. 

 298; Id., Angas, Proc. Zool. Soc, 1865, p. 173. 



In the British Museum this species is represented under the genus 

 Leucotina by one marked type, and, again, by two under Diala. 

 The habitat of both is given as the Philippines. Further evidence 

 seems necessary before the species is credited both to that archi- 

 pelago and to South Australia. 



Diala picta A. Adams. 



(Plate xviii., fig. 55.) 



Diala picta A. Adams, Ann. Mag. Nat. Hist. (3) viii., 1861, p. 



243; x., 1862, p. 295; Id., Angas, Proc. Zool. Soc, 1878, p. 867; 



Id., Tate and May, These Proceedings xxvi., 1901, p. 388 ; Id., Prit- 



chard and Gatliff, Proc. Roy. Soc. Vict., xviii., 1906, p. 61. 



In the British Museum are five specimens, probably types, but 

 not so marked, two being from the collection of Henry Adams. 



22 



