On new Specit's of non-marine Mollusca, 1 13 



openings from the coelom are open. Tlie egg-sacs aro 

 ])igtiiente(l, but tlie testis is not. 



riie niesonepluic duct of the left side appears to function 

 as a ureter, while that on the right lias its distal etid slightly 

 dilated, suggesting the presence of a rudimentary seminal 

 ve.'icle. 



Tlie horny epidermal pads are strongly developed on both 

 " tluunbs," and densely black. 



The eggs of the present season have been laid and fertilized, 

 and during the am|)lexus tliis animal conducted as a female. 

 I am unable to state whether in any previous or subsequent 

 amplexus it had or could conduct as a male, but from the 

 structural evidence it seems not impossible— nor even unlikely. 



The chief point of interest is tiiat though a testis is present 

 on one side only, the pads on the " thumbs" (male, secondary 

 sexual characters) are developed on botii — a case in nature 

 parallel with Sir E-. Owen's classical experiment. 



VI 11. — Diuff noses of ticw Species of Non-marine Mollusca 

 from Portuguese South-east Africa. By M. Connolly. 



FuLLKR particulars and illustrations of the shells described 

 below will be given in a more important treatise in the 

 Transactions of a learned Society, before which it was read 

 two years ago. However, the exorbitant cost of printing, 

 winch has so seriously affected scientific publication through- 

 out the British Empire — although, judging from beautiful 

 works recently z'eceived, it has not been allowed to influence 

 the output in other countries — has delayed further progress 

 towards its appearance ; and, as some of these new species 

 have been distributed (or several years under their manu- 

 script names, it seems advisable to publish them provisionally 

 in this little paper, pending the production of the larger 

 volume. 



Gonaxis cressyi, sp. u. 



Shell very small, oval, narrowly rimate, smooth, thin, 

 glossy, transparent, pale olivaceous. S[)irc short, with 

 parallel sides, axis almost straight, slightly bent backward 

 at the bluntly pointed a[)ex, which is only just visible from 

 the front. Whorls 6, moderately convex, rapidly increasing, 



Ann. (0 Marj. iV. IJist. Scr. 0. Vol. x. « 



