African Non-marine Molhisca. 357 



tlie malformation of its elongate, comparatively swollen 

 later whorls and shortened aperture. As a matter of fact, 

 Burnup has actually been able to match this deformed 

 shell with another from the same locality, which has been 

 broken at more than one stage of growth, and exhibits 

 almost exactly the same deformities. 



It is now clear that the normal form of E. lymneceformis^ 

 illustrated on PI. T., is a well-known species, smoother and 

 rather smaller than E. lanceolata^ Pfr. ( = natalensis, Bnp.), 

 which has been misidentified and distributed during recent 

 years as the true lanceolata^ Pfr. 



Euomjma magilensis (Craven), 1880. 



1880. Bulwms magilensis, Crvn. P.Z. S. p. 217. 



1913. Euonyma achilles, Prest. Rev. zool. Atricaiiie, iii. p. 54. 



This remarkable species is almost unique in its combina- 

 tion of broad blunt apex, shortened aperture, and perforation. 

 The type of magilensis is merely a half-grown example of the 

 beautiful achilles of Preston, and the latter name cannot be 

 retained. Being of somewhat solid texture, even the most 

 immature shells present a peculiarly mature appearance 

 about the aperture, and some of these were distributed prior 

 to 1914 under a manuscript Latin name recalling their very 

 short form ; they are quite inseparable from lyiagilensis. 



As Homorus and Subulina are invariably imperforate, it 

 may be advisable to retain the present species in the South 

 African genus Euonyma until something is known of its 

 anatomy. 



Genus Neoglessula, Pilsbry, 1909. 



Neoglessula paritura (Gould), 1850. 



1850. Achatina paritura, Gld. Proc. Boston Soc. iii. p. 196. 

 1885. Glessula hretiynerei, Cliaper, Bull. Soc. Zool. Fr. x. p. 46. 

 1894. Homorus assiniensis, Chaper, Kob. Coiicb. Cab. p. 91. 



Ancey suggested, in 1888, that bretignerei might prove to 

 be identical with paritura^ and comparison of authentic 

 specimens in the British Museum leaves no room for doubt 

 that Chaper^s species must be placed in synonymy. Pilsbry 

 has pointed out that the assiniensis mentioned by Kobelt is 

 a misprint for bretignerei. 



Paritura has been distributed in the past by at least one 

 German authority under the name of malaguettana, Rang, 

 but if Rang's figure and description are reliable the latter 

 is perfectly distinct, having a darker and more slender shell 

 than Gould^s species. 



