34 ADDITIONAL OBSERVATIONS ON 



12. Geoplana snlphurea, Fletcher and Hamilton. 



{Geoplana sulplmreus, Fletcher and Hamilton, loc. cil.). 



This species was foimd by Professor Spencer in the country between Marysville 

 and the source of the Yarra, along the Wood's Point Eoad, and is identified and 

 figured by him in the Proceedings of this Society.* I have in my collection a 

 number of specimens from other parts of Victoria, viz., the Otway Forest (two very 

 large specimens), Croydon, Walhalla, Croajingolong, Fern Tree Gully, and the 

 Upper Wellington (a number of very small specimens). Some of these specimens 

 have been iii my possession for a long time but the original description is so short 

 that I had not ventured upon an identification. Neither Messrs. Fletcher and 

 Hamilton nor Professor Spencer mention the position of the external openings. In 

 si)irit specimens I find the peripharyngeal aperture situate in about the centre of the 

 body and the genital aperture at about one-third of the distance between the 

 jieripharyngeal aperture and the posterior end. 



In G. sulphnrea the outer stripes are broader than the inner, in G. hoggii, which 

 comes very near it, the reverse is the case. 



The ground colour in G. snlphtirea is yellow. The inner stripes are dark brown, 

 or sometimes greenish grey, the outer ones are darker, usually black or nearly so. 

 In one of my Wellington specimens the two inner stripes are so close together that 

 in the spirit-preserved specimen tliey a])pear as one, so that the specimen appears to 

 have three stripes of equal width. In an interesting sjiecimen from Fern Tree 

 Gully all four stripes are extremely thin and discontinuous and almost entirely absent 

 from the posterior part of the body ; the outer stripes, however, are still distinctly 

 stronger than the inner ones. 



13. Geoplana hoggii, Dendy. 



I have little to add to my original description of this worm. I have again 

 collected it at Macedon, where it is very abundant, and have also received typical 

 specimens from Creswick, collected by Mr, Fiddian. The form certainly comes 

 very near to G. snlphurea, and had I realised what G. sulphnrea was really like at 

 the time when I wrote my description I should possibly have considered it as a 

 variety of the latter. G. hoggii, however, differs from G. snlphurea, as pointed out 

 above, in having the inner stripes broader than the outer ones, the green colour being 

 at the same time more pronounced; hence it may perhaps stand as a fairly 

 well-marked variety, though probably not a distinct species. 



* Loc. cit. 



