180 Proceedings of the Royal Society of Victoria. 



proljjibly groups of rod-cells, are also seen to be present. Anterior 

 extremity dark sepia. Lateral surfaces mottled in about equal 

 proportions of white and sepia. Ventral surface entirely white. 



In spirit the peripharyngeal aperture is situated a little in 

 front of the middle of the body and the genital aperture a little 

 nearer to it than to the posterior end. The copulatory organs are 

 extraordinarily large and complicated, and may (in spirit) be 

 protruded from the genital aperture in the form of a pair of 

 fleshy, somewhat comb-like processes, each bearing numerous 

 conspicuous conical papilla?. 



A slight variety of the species, obtained in quantity by 

 Professor Spencer at Parattah, differs somewhat in markings 

 from the typical form. An additional dark, ill-defined, paired 

 stripe is present on each side of the median dorsal stripe, half 

 way between it and the marginal stripe ; and the speckled 

 character of the dorsal surface is much less pronounced. 

 Specimens of this variety (which I have seen only in spirit) 

 approach G. tasmaniana in general appearance, but differ in the 

 greater breadth of the body and, apparently, in the structure of 

 the copulatory organs, which resembles that described in the type. 



Professor Spencer also informs me that he found the species 

 abundantly near Emu Bay, in January, 1892 ; that it sometimes 

 attained a larger size than those described above, and that it 

 varied considerably in colour. Unfortunately, the specimens 

 collected by him in this locality all died. 



It appears not unlikely that this species, in spite of its very 

 much larger size, may be nearly related to our Victorian G. 

 quadrangulata. So I judge from the characteristic shape of the 

 body and the fundamental pattern. The point cannot, however, 

 be determined without anatomical investigation, especially of the 

 copulatory organs. 



Localities. — Mount Wellington (L. J. Balfour, Esq.); near 

 Newtown Falls (A. Morton, Esq.) ; North Coast (G. W. Officer, 

 Esq.) ; Emu Bay (recorded by Professor Spencer) ; Parattah 

 (Professor Sjjencer). 



Geoplana lucasi, Dendy. 



Gcoplana lucasi., Dendy, Trans. Pvoyal Soc. Vic, 1890, p. 74 ; 

 1891, p. 40, ).l. iv., fig. 4. 



