174 WALTER E. COLLTNGE. 



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18W. 



23. Skmpek, Carl. — '• Beitvage z. Anat. iind Phys. d. Pulmonaten." 



' Zeit. f. wiss. Zool.,' 1857, Bd. viii. 



24. ' Reisen im Arcliipel der Pliilippinen.' 1870, Bd. iii. 



*' Landmollusken." 



25. SiMROTH, H. — "Ueber die Raublimgensclmecken," ' Natiirvv. 



Woclienschr.,' 1901, Bd. xvii, p. 109. 



26. ' Der Nac.litschueckenfai^na der Russichen Reiches," St. 



Petersburg, 1901. 



27. " Die Aiifklarung der siidafrikanisclien Nacktsclmecken- 



I'auua, anf Grand des von Herrn Dr. L. Schultz mitgebrachten 

 Materials," • Zool. Anz.,' 1907, Bd. xxxi, pp. 792-799, 1 fig. 



28. Sturany, Rudolf. — " Catalog der bisher bekannt gewordenen 



Siidafrikanisclien Land- und Siisswasser-MoUusken." ' Denksch. 

 k. Akad. d. Wiss. Wien," 1898, Bd. Ixvii pp. 537-642, t. i-iii. 



29. Smith, Edgar A. — " Description of a Species of Slug from South 



Africa," 'Ann. and Mag. Nat. Hist.,' 1892 (ser. 6), vol. x, pp. 

 465-466. 



30. Wacner, a. J. — "Die Arten des Genus Daudebardia Hurtmann, 



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 1896, Bd. Ixii. p[). 609-626. 5 pis. 



Addendum. 



Since this paper was written further new species of South 

 African slugs have been received from Mr. Burnup from 

 Zululand, and from Capt. Connolly from Cape Colony, which 

 I hope to find time to describe shortly. It would therefore 

 seem as if my prediction of 1900 (5) were well founded. 



