48 HUDSON : MOLLUSCA OF THE LOWER TEES. 



Arion ater var. rufa (L.). — One at High Cliff near Guis- 

 borough. 



A. ater var. marginata Moq. — Common in several places. 

 Guisborough, Marton, Thornaby, Upleatham, Middles 

 brough, &c., &c. 



A. hortensis var, grisea. — Thornaby. 



A. hortensis var. fasciata. — Thornaby ; with var. grisea. 



A. hortensis var. rufescens Moq. — Near Middlesbrough. 



Limax maximus var. cellaria Moq. — Thornaby. A curious 

 variety of this species was found by me, in several stages 

 of growth, in a prostrate tree trunk at Wilton Woods. 

 The following is a short note of its peculiarities made at 

 the time : — General body colour ashy, with two dark bands 

 enclosing a lighter area occupying the dorsal region. 

 Shield marbled with lighter spots, but general colour 

 darker than the back. Head and tentacles purplish and 

 black. Foot white with narrow and almost black margin. 



L. flavus L. — Cellars and yards at Coatham and Redcar. 



L. flavus var. colubrina Pini.— South Stockton. 



L. flavus var. virescens Fer. — South Stockton. 



L. agrestis var. sylvatica. — Near Battersby and at Cray- 

 thorn. 



L. agrestis var. tristis. — Battersby. 



L. laevis Mull. — I have recently found this in Airey Holme 

 Wood at the roots and in the stems of umbelliferous 

 plants where the ground was marshy. 



Before concluding it may be advisable to state that in 1882 I 



placed several living specimens of Limncea stagnalis and 



Planofbzs corneus in a small pond on Redcar sand hills beyond 



the battery. Last year I observed a half-grown specimen of 



L. stagnalis in this pond, but failed to find PI. corneus. As, 



however, both may hereafter turn up, I make this note for the 



guidance af future observers. 



J.C, v., April, 1886, 



