188 Proceedings of the Royal Society of Victoria. 



seven cocoons were laid by them. These varied somewhat in 

 form, being nearly round, oval, or distinctly egg-shaped. The 

 largest measured 4 by 3 mm., but two were much smaller. 

 After being laid for a few days the cocoons had a dull, almost 

 black colour. When freshly laid and while still within the body 

 they had a rich chestnut-brown colour. Only one was observed 

 inside the body, causing a swelling just behind the genital 

 aperture. 



About a month after the cocoons were laid the young began to 

 hatch out. On 6th June I found two recently hatched young 

 in the vivarium. They were <inly about 8 mm. long when 

 crawling. Shape and movemen::s of the body as in the adult. 

 Eyes abundant in single series on the sides of the head, round 

 the horseshoe-shaped anterior margin, and continued more 

 sparingly to the posterior end. The ground colour of both 

 surfaces was bright yellow, with distinct brownish-pink anterior 

 tip. In both specimens specks of brown pigment were scattered 

 over the dorsal surface. In one they were clearly arranged as in 

 tig. E of the adult, with the addition of scattered specks outside 

 the outer band of specks. The other specimen only showed 

 traces of a similar arrangement. 



On 9th June three more young were observed, one of which 

 showed tiu'ee distinct longitudinal lines of specks as before, while 

 the other two showed only a very few, faint, scattered specks. 



I have no observations as to the number of young developed in 

 each cocoon, probably two or three, as in other species (e.g., I 

 have found three young in a cocoon of G. alba). After the escape 

 of the young the split shell still contains a quantity of milky 

 fluid and curls up. 



Locality. — A deep gully just behind Mount Lofty (T. Steel, Esq.) 



In conclusion, I desire to express my thanks to Professor 

 Spencer and Messrs. Alexander Morton, G. W. Officer, L. J. 

 Balfour and Thos. Steel for the specimens described in this paper. 



DESCRIPTION OF PLATE X. 



Five specimens of Geoplana fletcheri, selected from a collection 

 of thirty-nine specimens and drawn from life to illustrate the 

 variation in colour-markings. All the specimens aie viewed from 

 the dorsal surface, and represented of twice the natural size. 

 (Fig. A represents the variety adetaidensis, which has the most 

 strongly developed markings). 



