Collection of Skigs from Sotith Africa. 7 



backwardly directed furrows as in 0. nigropunctata. No trace of a 

 keel. Eugge small but prominent, giving the whole body a coarse 

 granulated appearance. Peripodial groove distinct. Foot-fringe and 

 foot-sole yellowish-brown, no lineoles or divisions into median and 

 lateral planes. Length (in alcohol), 42 mm. ; mantle, 18"5 mm. 



Hah. Calvinia Div., Nieuwondtville. C. L. Leipoldt, September, 

 1898. Three specimens in collection of South African Museum. 



Generative Organs. This species differs from either of the 

 preceding species in the shortness of the free-oviduct (plate II., 

 fig. 18,/. ov.), the form of the sperm-duct and the shorter common 

 duct. The duct of the receptaculum seminis is slightly longer than 

 that in 0. Jiavescens, and the body a little larger. The hermaphro- 

 dite duct is densely folded and convoluted, and the gland is very 

 large (plate II., fig. 18, h. gl.). 



OOPELTA, Sp. 



Hab. Great Winterhoek. Dr. Marloth, December, 1896. Two 

 specimens, in collection of South African Museum. 



Possibly these may turn out to be young examples of 0. granulosa. 

 The body is of a reddish-brown colour and unlike the condition 

 which obtains in 0. granulosa, the foot-sole is divided into median 

 and lateral planes. The form of the sperm- duct is somewhat like 

 that in 0. granulosa, and there is a long convoluted vas deferens. 

 Length (in alcohol), 46"5 mm. ; mantle, 13'5 mm. 



Gen. AEION, Fer. 



Akion puscus, 0. F. Mtill. 



Hah. Cape Town. E. M. Lightfoot. 



Seven small specimens, two of which I dissected. The 

 generative organs of both agree with those I have elsewhere 

 figured.* 



Family ONCHIDIIDiE. 



Gen. ONCHIDIUM, Buchan. (Em. Plate). 



Onchidium peeoni, Cuv. 

 Hah. Green Point. F. Purcell, June, 1896. Eight specimens. 



* Proc. Zool. Soc, 1897, p. 443, plate xxx., f. 13, plate xxxi., f. 14. 



