THE CAKNIVOKOUS SLUGS UF SOUIJI AFlilCA. Ill 



Two years later Mr. W. E. Colling-e ^ described and figured 

 the alimentary canal, pedal gland, and reproductive organs 

 of a specimen of Apera which he had receiv^ed from 

 Mr. E. A. Smith. Unfortunately this specimen was not in 

 good condition for dissection, and Collinge's description is 

 uiaccurate in several respects, and his figures bear but little 

 resemblance to the natural condition of the organs that they 

 are intended to portray. Moreover the specimen was named 

 Apera burnupi, whereas it really belonged to a quite 

 distinct species. Collinge stated that he considered that 

 Apera had affinities with the Testacellida?, but he thought 

 that there was a wide gap between it and either Testacella 

 or iJaudebardia, and a still wider gap between Apera aud 

 ISchizoglossa. in the following year Dr. Pilsbry published 

 a short review of Collinge's article in the ' Nautilus.' ~ 



In 18U9 i-'aul and Fritz Sarasin'' brought forward the theory 

 that Apera was aucestral to Atopus. Now Atopus has a 

 large mantle covering the whole body, and the brothers 

 JSarasin therefore rejected Heyneuiann's interpretation of the 

 morphology of Apera, and advocated the use of Binney's 

 name Chlamy dephorus. 



In 1900 Collinge* received through Mr. J. H. Ponsonby an 

 example of Apera burnupi Smith, found by the Kev. J. K. 

 Ward at Kichmond, JS'atal, and belonging to the South 

 African Museum, Cape Town. He at once saw that this 

 specimen differed from the species which he regarded as 

 Apera burnupi, and accordingly he named it Apera 

 natalensis n. isp. He made a superficial dissection of some 

 of the internal organs, but the specimen does not appear to 

 have been m a much better condition than that of the other 

 species which he had previously dissected, and his figures of 

 its anatomy are in consequence equally faulty. In the same 



' -Ann. Mug. Nat. Hist." (6th aev.), 1897, vol. .xx. pp. 1:21-225, pi. v. 

 tigs. 1-6. 



- Vol. xh, p. 12. 



•' ' Die Laiid-Mollusken von Celebes,' p. 112. 



^ ■ Ann. S. Air. Mus.," vol. ii, pp. 'S-b. pi. i, tigs. 3, 4. pi. ii. tigs. 14.. 15 



