30 CATALOGtTE OF THE MOLLTTSCA 



3. Blackish above, with a black band on each side of the 



body, and the sides yellowish white. 



4. Yellowish or greenish white, with black tentacles. 



The young are always much paler than the adults, and are 

 sometimes of a transparent white. We have not met with the 

 rufous variety in this district. 

 2. A. FLAVUS, Midi. 



Avion flavus, Fer. Hist, des Moll. Supp. 96 ; Bouchard 



Chantereaux Cat. des Moll, du Pas-de-Calais, 23. 

 Lim,ax Jlavus, var. y, Nilsson Moll. Suae. 5. " Fallidus, 

 clypeo flavo, dorso sub-cinerascente.^^ 

 The variety has once occured to us ; found on the moors near 

 Haltwhistle by Mr. J. Blacklock. 



M. Bouchard Chantereaux considers this species distinct from 

 A. ater, and it has not the characters of the latter pointed out by 

 Ferussac ; but we know too little of it to give a decided opinion 

 in so difficult a genus. Our individual was about an inch in 

 length, with the body whitish, having a faint greyish tinge above. 

 The shield and the posterior part of the body near the tail were 

 of a pale canary yellow. Tentacles, grayish white. The mucus 

 Avas deep orange-yellow. The mucus of A. ater is colourless or 

 very faintly tinged with yellow. 

 3. A. HORTENsis, Fer. 



Avion hortensis, var. 2, Gray Turt. Man. 107. 

 Limax fasciatus, Nilsson Moll. Suec. 3. 

 Limax ci7'cumscviptus, Johns, in Edinb. Phil. Journ. v. 77. 

 In gardens, common. 



A variety, or, as we are inclined to think, a species nearly al- 

 lied to this, is found in w^oods. It is about twice the size of the 

 garden slug, and its colour invariably yellowish fawn, inclined 

 to amber, with a brown band on each side. We have never 

 found the two kinds mixed, the one inhabiting woods, and the 

 other cultivated grounds. This variety, we find, is well known 

 to the Rev. B. J. Clarke, who also finds it constant in colour and 

 markings. The mucus is orange yellow. 



