Collection of Slugs from South Africa. 3 



Shell a smooth, nearly ovoid calcareous nodule, slightly broader 

 posteriorly than anteriorly. Major diam. 5, min. diam. 3'2 mm. 



Hab. Cape Town. E. M. Lightfoot. Type in collection of South 

 African Museum. 



Externally this species is not unlike some forms of A. gacjatcs, 

 Drp. ; the general form of the generative organs, however, at once 

 separates it from that species. I have much pleasure in associating 

 with it the name of Mr. J. H. Ponsonby. 



Generative Organs. There is a single vestibule. The vagina is 

 short. The external form of the sperm -duct is very characteristic ; 

 it may be divided into two parts connected by a fine tube (plate II., 

 fig. 13). The lower portion consists of two dilated cavities, the 

 upper of which is the smaller, and from the outer (right) side of 

 this a fine tube opens which is connected with the upper portion ; 

 this shows a constriction in the middle, and is connected distally 

 with the vas deferens, a short, narrow tube (plate II., fig. 13, v.d.). 

 The receptacular duct is very short, and opens into the vagina on 

 the dorsal side. The receptaculum seminis is a large globular sac 

 lying in life on the dorsal side of the free-oviduct. This latter 

 organ is rather shorter than in A. gagatcs, Drp. The remaining 

 portions call for no special mention. 



Gen. AGEIOLIMAX, Morch. 

 Agriolimax agrestis, L, 

 Three specimens. 

 Hah. Cape Town. E. M. Lightfoot. 



Family TESTACELLIDiE, Gray. 

 Gen. APEEA, Heyn. 



Apera natalensis, n. sp. 

 Plate I., tigs. 3-4; Plate II., figs. 14-15. 

 Animal limaciform, subcylindrical, broad posteriorly, tapering 

 anteriorly, dorsally reddish-brown with dark greenish-blue mottling,, 

 sides of body orange-red or dark orange with greenish-blue mottling, 

 which becomes scarce towards the peripodial groove. Commencing 

 from the head, the dorsum gradually rises, and at about one-third of 

 the animal's length from the posterior end it slopes downwards. 



