IO 



HA RD WICKE' S SCIENCE- G OS SIP. 



gums. The root is also used medicinally ; there is 

 another species named S. areira, which is said to 

 cause swellings to those who sleep under its shade. 

 The leaves of this and other species are filled with a 

 resinous fluid, so that the least degree of unusual reple- 

 tion of the tissues causes it to be discharged. Thus 

 some of them fill the air with fragrance after rain ; 

 and 5". mollc expels the resin of its leaves with such 

 violence when immersed in water, that they move in 

 jerks, so as to have the appearance of spontaneous 

 movement. (" Botanical Register " t. 1580.) This I 

 have observed in 6". molle, S. areira, and one other 



species. 



J. T. Riches. 



OUR BRITISH SLUGS. 



IN answer to Mr. Cockerell's strictures, I must say, 

 firstly, that he gave me the list of British species ; 

 secondly, that he read over the manuscript previous 

 to its publication during a lecture, and pronounced it 

 "good;" and thirdly, that the additions he gives to 

 our fauna were described as such since the writing of 

 the article, and as such exempt my article from the 

 criticism in that respect. 



Mr. Brockton Tomlin I must thank for giving the 

 original description of T. haliotidea var. Campanyonii, 

 Drap. I could not lay hold of Campanyo's "Hist. 

 Nat. des Pyrenees Orientales," and consequently my 

 description was taken from the work of Moquin- 

 Tandon. 



To my paper, I wish, however, to supplement 

 several additions. They are as follows :— 



Limax arbomm, B.Ch. : (1) v. rosea, Boeck. 1870; 

 rosea, dorso brunneo-rufescente, carina pallide rosea, 

 fasciis nigris, clypeo sub lente maculis ovalibus dense 

 ornato. Belgian ; (2) v. colorata, Boeck. 1S70 ; aquosa, 

 subpellucida, carina alba subnigro-marginata, clypeo 

 ut in a fasciate abdomine utrinque brunneo-fasciato. 

 Also Belgian ; (3) v. tigrina, Weinl. ; pallide vire- 

 scenti-flavida, clypeo maculis nigris in seriebus 5 

 ornatis, corpore utrinque fasciis duobus abruptis. 

 "Wurtembergian ; (4) v. jlava, Weinl. ; viridiflava, 

 unicolor. Also Wurtembergian ; (5) v. heynemanni, 

 Beliz. ; alba, clypeo picto, dorso maculis parvis nigris, 

 rugis majoribus et carina alta notato. 



Limax cinereo-niger : (1) v. nigripes ; stabile, sole 

 black-edged; (2) v. oruata, Less.; "mero carena e 

 zona dorsale e 2 serie dei macchie bianche ; " (3) v. 

 strobeli ; "autcinerea, nigro-maculata." 



Limax /avis v. nmcronata, West. : luteo-brunneus, 

 lateribus pallidis solea alba, clypeo processu conico ; 

 long. 10 mm. Ronneby in Sweden. 



Limax maximns, v. calosoma, Eis and Stuxb. ; ob- 

 scure olivaceus, maculis pallidioribus clypeo atro, 

 marginibus pallidis. 



Limax tenellus : (1) v. xanlkia, Bourg. ; animal 

 uniformiter luteolo- vel subviridulo-aurantiacum, rugis 



dorsalibus argutis, elongatis, dorso convexo, ad cau- 

 dam acute carinato, clypeo valde, anteriori, maximo,. 

 eleganter striatulo ; long. 45 mm. German ; (2) v. 

 squammatina, Morel; aureo-virescens, lateribus caeru- 

 lescentibus, tentaculis nigris, quadro-fasciatus, lineis 

 lateralibus parallelis dorsalibus in unum convergenti- 

 bus. Lusitanian. 



Arioti ater: (1) v. melanocephala, F. Big. (Z. 

 Jlavus, Mull. (?), Nilss. ; A. flavus, Fer., Lehm.) ; 

 albido-virescens v. pallide thalassinus, capite et ten- 

 taculis atris ; (2) v. gatidefroyi, Mab. 1S70; dorso 

 griseo-rufescens v. flavidus, solea medio pallida, limbo 

 griseo atro-lineato ; (3) v. brunnea, Lehm. 1862 ;. 

 caffeatus v. ferrugineus, dorso obscuriore. German ; 

 (4) v. olivacea, Sehm. 1856 ; olivaceo-brunneus, ob- 

 scurius fasciatus, subtus cinereus sudore luteo. Ger- 

 man ; (5) v. sulcata, Morel, 1845; omnino niger,. 

 margine radiato, castaneo ; long. 15-16 cm. Lusi- 

 tanian ; (6) v. servainiana, Mab. 1870 ; corpus rufum, 

 postice attenuatum obtusum, squamis vix elevatis, 

 corpore ccntracto rectangularibus apud exempl. iru 

 spiritu conservata omnino deplanatis. French. 



I may just mention here that Seibert (Malak. Blatt. 

 1873, P- x 98 et sea.), from a long study, says that 

 A. jlavns is but a variety of Arion ater, and that the 

 v. melanocephala of the latter is but its young of a 

 greenish-white colour. This, however, in passing. 



Arion horte?isis : (1) v. pectophila, Mab. 1870; ater,, 

 fasciis lateribus obscurioribus, limbo rufo. French ;. 

 (2) v. anthracia, Bourg. 1866; gracilis, minor (long. 

 c. 30 mm.) uniformiter aterrimus, limbo paullo pal- 

 lidiori. Meridional France ; (3) v. distincta, Mab.. 

 1868 ; minor, griseo-flavidus. French ; (4) v. oresiceca y 

 Mab. 1870; flavescens, tentaculis nigris. French. 



Geomalcus maculosus, Allm. : (1) v. allemanni, 

 Heyn. ; ater vel obscure brunneus, albo-maculatus ; 

 (2) v. typica, Heyn. ; ater maculis flavidis ; (3) v. ver- 

 kriizeni, Heyn. (not verkrareni, as printed on p. 202 

 of last volume of Science-Gossip) ; griseus, albo- 

 maculatus. There is a good figure of this species in 

 Mai. Bl. xxi. t. 1, f. 1-6, to which the reader may 

 advantageously refer. I stated at the top of the first 

 column of p. 203 in this journal, last year, that Forbes 

 and Hanley surmised this slug would eventually prove 

 to be Asturian ; I find that Westerlund, in his now 

 publishing " Fauna Europsea" — a work of which by- 

 the-way I advise every Science-Gossiper who can 

 afford it to avail himself — that it is so. 



I have said nothing of the varieties that Mr. 

 Cockerell speaks of in his note in the November 

 number, as he alone must be responsible for his own 

 amendments. I give simply those he has left out. 



J. W. Williams, D.Sc. 



From Mr. Fred Enock we have received No. r> 

 of the "Entomological Sketches," which accompany 

 his well-known slides, and give full details of structure, 

 of the object mounted. 



