52 NOTES. 



only known from Ireland, and I think ihis is a form of L. inaximus, 

 possibly sufficiently distinct to be regarded as another species. In 

 the hope that Irish malacologists may be able to supply me with 

 further examples I give the following particulars. 



The slug alive measured 136 millim., and has a keel quite as 

 prominent as that of Liinax viarginatKs, Miill. The ground colour 

 is a chocolate black with a light brown stripe on the keel — slightly 

 interrupted anteriorly. The tentacles and fore part of the head are 

 minutely spotted with brown. The ventral edges of the mantle and 

 the parts of the body covered by the same, are of a dirty white with 

 irregular sepia blotches. The foot-fringe is black or a very dark 

 sepia, the foot-sole with lateral sepia coloured planes and a median 

 ■white plane. 



Anatomically there seems to be little doubt but that there are 

 sufficient grounds to separate it from any other known species of the 

 genus. I shall later describe and figure the anatomy of the 

 reproductive organs, so will here content myself with pointing out 

 two very prominent characters, viz., (i) the penis is long as in 

 L. maxivms, but twisted upon itself, and the vas deferens does 

 not arise from the lateral wall as in many members of this genus. 

 e.g., L. maximus, L., L. afer, Raz., L. geographiais, Ren., <Scc.. but 

 is a direct continuation of the penis ; (2) the duct of the recepta- 

 culum seniinalis is more than twice the length of any I have seen 

 in L. ftinxi/iius, the receptaculum is also larger anrl pyriform. 



The very prominent keel and attenuated posterior portion of 

 the body at once distinguishes it from L. /iiaxtiiius, while its size 

 separates it from the remaining British or Irish Limaces. When 

 I opened the box in which it was contained it reminded me some- 

 what of L. stibalpmus, Less.f Unlike this species, however, it has 

 no trace of lateral bands or marbling on the mantle. 



Should I be able to procure more examples I hope to describe 

 and figure it in detail, and name it Limax hedleyi, after Mr. Charles 

 Hedley, the distinguished Australian malacologist, to whom I am 

 much indebted for particulars of the slugs of that region. 



NOTES. 



Description of Urocyclus flavescens (Keferst.). 



The following notes arc l)aseil (jn an examination of .some specimens in the 

 British Museum : — 



Length (in alcohol) 30^ mm., mantle length 13 mm. ; l)rea(lth 9 mm., breadth 

 of sole 9 mm. Medium area of sole decidedly narrower than either lateral area. 

 Mantle oval, truncate anteriorly, l)lunlly angulate or rather subrostrate posteriorly: 



t .\tti. R. Ace. d. Lincei Mem. Sc, vol. 



