112 HUGH WATSON. 



paper Colliiige publij^lied two coloured figures of Ijotli species 

 by Mr. F. J. Partridge. 



In the following year CoUinge ^ had an opportunity of 

 examining a better specimen of the species which he supposed 

 to be Apera burnnpi, and he discovered how misleading 

 were his former figures of its anatomy. He therefore 

 published a more accurate figure and description of the 

 reproductive organs of that species. At the same time he 

 criticised the theory of P. and F. Sarasin, and said that xA-pera 

 was probably closely allied to the Testacellidte, Avhile 

 A top us on the other hand seemed to be far removed from 

 that family. 



In December, 1901, Collinge ~ described the external 

 features of a new species of Apera found by Mr. B. j\l. 

 Lightfoot on the slopes of Table Mountain, Cape Town, and 

 published coloured figures of it by Partridge. This species 

 he named Apera puree Hi. 



Dr. Simroth,'^ in the same month, published a copy of 

 Collin ge's figure of Apera natalensis (:= A. burnupi 

 iSmitJt), in his interesting article on carnivorous snails and 

 slugs. In this paper he unfortunately stated that Apera 

 was without a shell, and again suggested that the genus 

 might have been derived from the Jan ell id a3, or possibly 

 from some other ancient family of herbivorous slugs found in 

 the Southern Hemisphere, although he admitted that too little 

 was known of the genus to give any value to his hypo- 

 thesis. 



In 1902 Collinge^ reproduced on a larger scale his second 

 figure of the reproductive organs of the species which he 

 erroneously supposed to be Apera burnupi. In the fol- 

 lowing year Dr. von Moellendorff ^ removed the genus from the 

 Testacellida?, and placed it in a family by itself, which he 



' ' Journ. of Malac' vol. viii. pp. 71, 72. 



2 ' Ann. S. Afr. Mus.,' vol. ii. p. 230, pi. xiv, figs. 1. L'. 



•' ' Naturwiss. Woclienscbnft.* vol. xvii, p. 111. fig. 7. 



"* ' Joiirn. of Malac.,' vol. ix. pi. vi. fig. 66. 



'" ' Conch. -Cabinet (Agnatlia).' p. 5. 



