HARDWICKE'S SCIENCE-GOSSIP. 



225 



(1.) Entirely light brown. Kenley. Chalk pit at 

 Croydon. 



(2.) Purplish-brown. Chislehurst. This would 

 come under lilacina. 



(3.) Mantle brown with very'faint mottling, body 

 greyish-brown. Croydon and near Godstone. 



(4.) Mantle mottled with grey, body reticulated 

 with grey just behind mantle, but mottled behind, 

 head and tentacles light brown. Croydon. Inter- 

 mediate between reticulata and sydvatica apparently. 



(5.) Body and mantle light brown, spotted all over 

 with grey at somewhat regular intervals ; head and 

 tentacles darker than ground colour of body. Chalk 

 pit at Croydon. Possibly allied to var. punctata, 

 Picard, but not, I think, identical. 



(6.) Body distinctly and beautifully reticulated. 

 One at Acton, others less marked, and approaching 

 nearer to type (var. 4). This would seem to be var. 

 reticulata. One at Croydon. 



(7.) Ground colour light brown, body and mantle 



Succinea Pfeifferi. — I have taken an almost scalari- 

 form specimen at Bromley. Var. brevispirata, Perivale, 

 Middlesex. 



S. vircscens. — Specimens of this species from St. 

 Maiy Cray have the animal light in colour. 



S. elegans. — My brother has found some remarkably 

 elongated specimens at Minster. 



J. Hazay, in the German Journal of Conchology 

 for 1 88 1, gives a list of the species" and varieties of 

 Succinea Mrs. Fitzgerald has sent him from England. 

 Among them he mentions the following — S. putris 

 var. globuloidea, Cambridge ; var. Charpentieri, 

 Notts ; var. limnoidea, Dublin; var. Ferrussina, 

 Matlock ; var. Fitzgeraldiana (var. nov.), Folkestone j 

 Succinea elegans, type form, Essex and Deal ; var. 

 Baicdoniana, Yorkshire ; sub-sp. S. Pfeifferi, type, 

 Folkestone and North Wales ; var. elata, Cornwall j 

 var. contortida, Yorkshire ; sub-sp. S. suecica, 

 Cheshire ; S. oblonga, type and var. humilis, Cork. 

 It would, however, be desirable to obtain speci- 



Fig. 150. — Arion, sp., 

 Bedford Park, Chiswick. 



Fig. 154. — Leucochroa catidi- 

 dissima, Bordighera, Italy. 

 This species is by some 

 writers called a Zonites. 



Fig. 151. — 1, Hyalina glabra, 

 Jeff., Bromley; 2, Hyalina 

 cellaria,Chis\shurst. Show- 

 ing the difference in the 

 shape of the mouth, by 

 means of which the two 

 species may readily be 

 distinguished. (Somewhat 

 enlarged.) 



thickly but irregularly mottled with black, mantle 

 almost entirely black, except round respiratory orifice. 

 A form of sylvatica. Croydon and Brentford. 



(8.) Mantle light brown, body greyish without 

 markings. Croydon. Probably identical with var. 

 filans, Hoy, but hardly, I think, deserving a varietal 

 name. 



Limax arborum. — " The beautiful sea-green variety 

 occurs in a garden on Bramley Hill, where a family 

 of them lives in a hollow in an old oak " (K. Mc 

 Kean). 



Testacella haliotidea. — It would seem that all the 

 British individuals of this species belong to the variety 

 scutulum, which may ultimately prove to be a distinct 

 species. At Bedford Park there are three fairly 

 distinct colour varieties. They may be described as 

 follows : (A) ground colour pale yellow. (1) 

 without any markings = pallida ; (2) with brown 

 mottling on back and sides = typica. (B) ground 

 colour orange = aurea. In aurea the mottling is as in 

 the type form, and the orange of the sole is particularly 

 vivid. 



Various varieties are found abroad. The Rev. J. W. 

 Horsley has taken some at Gibraltar, which may be 

 called scutulum, sub-var. albida, for they were pure 

 white. 



Fig. 152. — Hyalina Drapar- 

 naldi, Clifton, Bristol. 



Fig. 153. — Hyalina nitidula 

 vai./asciata, West North- 

 down, Thanet. 



mens of these varieties for comparison before 

 admitting them into the British list. 



Vitrina fellucida. — Not a variable species. My 

 largest specimen is from Beckenham. 



Hyalina. — The species of this genus are placed 

 under Zonites by writers on British Conchology, but, 

 nevertheless, I would reject that generic name for 

 our British species in favour of Hyalina, Albers, and 

 for the following reasons. The type of the genus 

 Zonites is Z. algirus, L., a species totally unlike any 

 of our British species, inhabiting the south of France, 

 and ranging, it is said, to Constantinople. Kobelt 

 gives fourteen species of Zonites proper, none of 

 which are found in England, but have their home in 

 south-east Europe. On the Continent, and I 

 believe, in America, the so-called British Zonites 

 are all placed in Hyalina, except fulvus, which is 

 sometimes placed in a sub-genus Conulus. It is 

 obviously essential that we should, if possible, use 

 the same nomenclature as foreign conchologists, and 

 when there is a difference of opinion, that of the 

 majority should prevail, but as those who use Hyalina 

 abroad are many more than those who use Zonites in 

 Britain, it is hardly reasonable to expect them to 

 change their name to please us, and all that remains 

 is for us to adopt Hyalina. 



The late Dr. Gwyn Jeffreys once wrote to me on 

 this subject, he said : "I cannot accept the subgeneric 

 name Hyalina or Hyalinia. . . Zonites represented 

 by Z. algirus does not in the least differ from 

 Hyalina. . . By the rules of the British Association, 



