.-1 Further Collection of South African Slugs. 231 



In the Collection of Slugs in the Zoological Museum of the 

 University of Copenhagen there are exactly similar specimens, 

 excepting in size, from Guinea, labelled 0. nicjropunctata, Morch. 



With regard to the specific name, I cannot find that Gray ever 

 published the name allcrian ; aterrima must therefore stand. 



The following description of the type may possibly lead to its 

 rediscovery in South Africa. 



Avion aterrivms, Gray, Cat. Pulm., 1885, p. 55. 



" Avion " atervimus, Gray, Cockerell, Ann. Mag. N.H., 1890, p. 387. 



Animal entirely black. Body marked by a series of oblique, back- 

 wardly directed furrows 2-2-5 mm. apart. Mantle oval, granulated, 

 particularly so anteriorly, posteriorly produced and bluntly angled. 

 No trace of keel or caudal mucous pore. Peripodial groove distinct. 

 Foot-fringe and foot-sole black, no lineoles or divisions into median 

 and lateral planes. Length (in alcohol), 40 mm. ; mantle, 23 mm. ; 

 breadth of foot-sole, 12-5 mm. 



It is only fair to state that Prof. Cockerell {op. cit., p. 388 *) was 

 the first to suggest that this might possibly belong to Morch's genus 

 Ooijelta. 



OOPELTA FLAVESCENS, CUge. 



This is a much more variable species than I originally thought. 

 ■" The head in some specimens is a bright orange ; these have a narrow 

 . yellow line from the dorsal part of the mantle to the tip of the tail. 

 Foot-fringe and foot-sole light yellow, semi-transparent. I notice in 

 these specimens that some of them change in the dark to a dark 

 olive colour" (E, M. L. in litt.). 



Hah. Caledon, F. Purcell, 6986; Swellendam, F. Purcell, 

 €987; Kogman's Kloof, mountainside, near Ashton, F. Purcell, 

 €988. 



OoPELTA GRANULOSA, Cllge. 



A very fine example measuring in alcohol, 64 mm. long ; mantle, 

 31-5 mm. 



Hah. Hot Springs, Montague, F. Purcell, 6989. 



OoPELTA NIGROPUNCTATA, Morch, 



Plate XIV., figs. 6, 11-12. 

 Judging from the specimens I have examined of this species, the 

 form of the sperm-duct seems subject to much variation. I give a 

 * See also Check-list of the Slugs, 1893, p. 15. 



