THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SIXTH SERIES.] 

 No. 34. OCTOBER 1890, 



XXXII. — Notes on Slugs ^ c^^^cfliJ *'^ ^^^ Collection at the 

 British Museum. By T. D. A. Cockerell. 



The following notes result from a study of various species of 

 slugs, many of them new or hitherto ill-understood, which I 

 have been able to examine recently. Most of the specimens 

 referred to are in the British Museum, though some few arc 

 in private collections. I liavc to tliank Mr. E. A. Smith for 

 affording me every facility at the Museum ; and I am also 

 greatly indebted to Mr. W. G. Binney for the opportunity of 

 examining many species of American slugs. 



I. AmoLiMAXj Anabbnus^ and Prophtsaon. 



This group of ArionAWiQ slugs has not been very well 

 understood, partly, no doubt, because of the difficulty of 

 obtaining specimens of the species. I have been fortunate in 

 seeing quite a large series of fornis, which I tabulate as 

 follows : — 



A. Sole not differentiated into parts ; respiratory orifice anterior ; genital 

 orifice close to right eye-peduncle. 



(1) No caudal mucus-pore. . . . Gen. Pvoplnjsaon, Bid. & Binn., 1873. 

 Sect. a. Fasciatd. Body v/ith dark dorsal band. 



i. Jaw ribbed P. fasciatum, Ckll. 



ii. Jaw striate, not ribbed. P. humile, Cldl. (prfec. var. ?) 



Ann. & Mag. N. Hist. Ser. 6. Vol vi. 2U 



