BY C. HEDLEY. 25 



opportunity of comparing Tasmanian specimens with those 

 collected by Mr. Helms on Mt. Kosciusko, also with some taken 

 by Mr. Musson at Eallarat, and I find no differences of specific 

 importance between them. In Tasmania I gathered the species 

 under the guidance of the gentleman whose name it bears, from 

 the original locality, Cataract Hill, near Launceston. I also 

 found it at Dennison Gorge and on Mr. Dyer's estate, Scottsdale. 

 In the first locality the animals lived under logs, upon a dry, 

 scantily-timbered hillside ; in the two latter places they inhabited 

 damp fern-tree gullies. As the consequence, probably, of more 

 favourable surroundings, those from the moist situations were 

 larger in size and lighter in colour than the type variety. Mr. 

 Petterd pointed out that its habits were gregarious. A dozen 

 likely pieces of fallen timber might be searched without result, 

 yet the next might conceal a score of these slugs. The larger 

 form was pale greenish-yellow spotted with black ; the black spots 

 on the shield are most irregular in size and distribution. The 

 figure I published from a spirit specimen gives no idea of the 

 animal in life, therefore I append a second sketch taken from a 

 living individual on the spot. 



EXPLANATION OF PLATES. 

 Plate ii. 



R., Rachidian tooth; o.t., ovotestis ; h.d., hermaphrodite duct; ov. 

 oviduct; c.o., common orifice; sp., spermatheca ; p., penis-sac; r.m.p. 

 retractor muscle of penis. 



Fig. 1. Jaw of Bulimus dufresni. Magnified. 



Fig. 2. Jaw of Bulimus tasma,7iicus. Magnified. 



Fig. 3. Central portion of radula of ditto. Magnified. 



Fig. 4. Genital system of ditto. 



Fig. 5. Jaw of Anoglypia lauucestonensis. Magnified. 



