1892. J 



THE BRITISH NATURALIST. 



53 



129 known to be indigenous to the British Isles ; only four genera unrepresented. 

 The president exhibitird fine varieties of Ennomos angularia ; Dr. Elli.;, Pidvinana 

 camdlicola (a rars species A coccus from camellia trees) ; Mr. Collins, 4 specimens of 

 DeilcpJiila galii, bred by him from 22 larva taken on Epilobium angustifoliiiyA , at 

 Warrington in 1889, the specimens were small and were the only perfect ones bred, and 

 a variety of Noctua festiva, with distinct black transverse lines on a uniform grourd 

 colour ; Mr. Schill, Hydrous angustior from Milan, taken flying round electric light. Mr. 

 Stott, a collection of Local Hydradephaga, and by Mr. Pierce, Agrotis candelarum from 

 Saxony and its var. Aslnvorthii. — F. N. Pierce, Hon. Sec, 143 Smilhdoivn Lane 

 Liverpool. 



GUERNSEY NATURAL SCIENCE SOCIETY. 



February loth. — The usual monthly meeting was held on Wednesday, at the 

 Guille-Alles Library, the chair being taken by Mr. J. Whitehead, President of the 

 Society. There was a large attendance of members and visitors. Colonel J. G. 

 Clooete and Mr. A. C. Quick were elected members of the Society. I\Ir. W. A. Luff 

 exhibited specimens of the Winter Moth (Cheimatobia brumata) which this winter is 

 very plentiful in the island, though usually very scarce. Under the title of A 

 Glance at the Rocks of Alderney," Mr. C. De La Mare gave an account of a visit 

 made by him to the island of Alderney on the 25th June last, and exhibited various 

 specimens of the rocks which he collected on that occasion, describing their mode of 

 occurrence, &c. The specimens of sandstone or grit justified the Rev. E. Hill's 

 description quoted from his paper on Alderney, varying from pebbly sandstones to 

 fine mudstones. Specimens of granite and intrusive dykes of m.ica trap and green- 

 stone were also shown, the latter cutting the sandstone, and the effect of these 

 greenstone dykes on the adjoining sandstone was adverted to. Various raised beaches 

 were noticed, especially that in Plate Saline Bay, these beaches corresponding in 

 their main features with those of Guernsey, and in some localities containing flints 

 as in Guernsey. The present beach of Plate Saline Bay also abounds with flints, 

 mostly of small size. Mr. De La Mare exhibited a diagram prepared by him 

 showing the c .rrelatiim of the Channel Islands' rocks with those of France and 

 England. He stated that he considered the following points now fully established, 

 viz. : — ist. That the Alderney grit is identical with the rock on the opposite coast of 

 France known as the " Gvcs fehispathique." 2nd. That the Grcs feldspathique " 

 immediately underlies the Grcs Armoricain which is the oldest rock in North- 

 western France in which fossils have so far been traced. 3rd. That the G;v5 

 Arnioricain " corresponds with the " Arenig Rocks " of V^ales. From this it follows 

 that the Alderney grit cannot be of more recent age than the Arenig Rocks, which 

 are " Lower Silurian " according to the nomenclature adopted by the English and 

 French Geological Surveys. Mr. De La Mare's remarks were listened to with much 

 pleasure. A discussion followed in which several members took part, and a hearty 

 vote of thanks was accorded to Mr. De La Mare for his lucid and interestmg 

 treatment of a difficult subject. For the March meeting, Mr. E. D. Marquand has 

 kindly promised a paper on " The Language of Ants." — VV. Sh.'^kp. Hon. Sec. 



General Notes. 



LuPERiNA TESTACEA VAR. NicKERLii. — 111 the " Entomologist," Vol. 

 XXII., pp. 271 and 272, I made some remarks on a fovm of L. fcsfacni 

 known as L. iiickerlii, Freyer. At a meeting of the City of London 



