l893 .] THE BRITISH NATURALIST. 199 



collections vary according to the date of their decease from brownish- 

 yellow to white. Though the sharpness of the sculpture gets rubbed 

 down in these more decrepit individuals, the " pits " are generally 

 more or less visible owing to the high-relief of the original ribs, which 

 are moreover very equal in size (i.e. the " longitudinals " and the 

 " spirals "). The above-mentioned tubercle will be of considerable 

 use in certifying the species. It is common in the Mediterranean and 

 from England downwards. On our shores it is locally plentiful alive, 

 if you can only hit upon a favourable spot, but seems chiefly confined 

 to the Channnel Isles and S.W. of England. Isolated records have 

 occurred up the W. coast as far as the Hebrides, as well as in Ireland, 

 and I can add Ilfracombe (in drift) to those in Jeff. B.C., IV., 9. It 

 usually lives at extreme low tide under stones and is markedly 

 gregarious. At Herm I once took 50 alive off ons stone. The well 

 known shell beach on this island is extremely prolific in dead speci- 

 mens, and, as it is a stout shell, they are seldom broken. As far as 

 my experience goes, it does not live under deeply buried stones, but 

 under those that leave some space above the ground. Of varieties 

 I find— 



FORM. 



Var. paupcrcula, Jeff. (= minor, Monts.) shell dwarfed and 



proportionately longer. 

 Var. varicosa, Bucquoy, having varices. 



COLOUR. 



Var. lineata, Monts., having the spiral ribs red. 

 Var. unifasciata, Bucquoy, having a red band below the 

 suture. 



Canon Norman quotes a var. hirta, Monts., but I do not know its 

 characteristics. 

 Llandaff. 



ENTOMOLOGICAL NOMENCLATURE. 



BY C W. DALE, F.E.S. 



Dr. Buckell states, on page 181 of the current volume, that Leach's 

 name Goneptcryx for rhamni was deliberately rejected by Boisduval on 

 account of its too great similarity to Gonoptera. But he seems to 

 ignore the fact that Staudinger replaces the generic name Gonoptera, 

 Latr., with the older one of Scoliopterxy, Germ. Such being the case, 

 he ought to have replaced Rhodocera by Goneptcryx. 



Dr. Buckell also states that the balance of authority is seen from 

 the summary he gives to be rather in favour of the use of Lytcena for 

 the Blues. But Polyommatus, meaning many-eyed, is more typical of 

 the Blues than the Coppers, and Latreille moreover says that the 



