Xi 
collected near Thetford, in Norfolk, pointing out to me at the same time 
some curious galls on its leaves. They may be described as oblong, of the 
size of a grain of wheat, and as attached longitudinally to the blades of the 
Carex, sometimes in groups. When fresh they were of a paler green 
than the plant itself; in their present dry state they are coffee-brown, 
and remind one vividly, by size and colour, of the brown cocoons of certain 
Nemati. But this resemblance is only superficial; they form part and 
parcel of the plant, and derive, in their fresh state, their sap direct from 
its tissues. They are monothalamous. I potted the plant immediately on 
arrival, but notwithstanding my constant attention I have failed to rear the 
maker of these excrescences, so I record my observations so far, in the hope 
that other naturalists will be luckier than myself.” 
Papers read, de. 
Mr. C. O. Waterhouse communicated a paper ‘‘On a new genus and 
species of Lucanide (Apterocyclus honoluluensis) from the Sandwich 
Islands.” 
Mr. Wollaston communicated a memoir “ On additions to the Atlantic 
Coleoptera.” In this paper he recorded the additions to the combined fauna 
of the Madeiras, Salvages and Canaries, noticed since the publication of 
his ‘Coleoptera Atlantidum’ in 1865. The new species were thirty-three 
in number, but he had expunged two species from the list, leaving the total 
number at 1480, as against 1449 in 1865; sixteen of the additions he 
described as probably new to Science. The total number of species were 
distributed thus :—Madeiras 694, Salvages 27, Canaries 1013. Mr. Wol- 
laston proceeded further to notice certain changes in nomenclature that had 
become necessary; and alluded to the discoveries of Mr. Godman in the 
Azores, which, according to the list published by Mr. Crotch, seemed to 
affiliate this group with the more southern Atlantic archipelagos. The 
introductory portion of the paper terminated with an examination of the 
origin of the beetle-fauna of these islands, according to the theories of 
Mr. Murray, as enunciated in his treatise ‘On the geographical relations of 
the chief Coleopterous Faune,’ and of Mr. Wallace, as explained in his 
recent presidential Address. From observations made in situ, establishing 
a remarkably homogeneity of character in the fauna of the several groups, 
up to a certain nucleus, and then diminishing towards the south, Mr. Wol- 
laston adhered to his original idea of a former land-connection between the 
groups, afterwards broken by some gigantic catastrophe; and in this 
respect he favoured the views of Mr. Murray more than those of Mr. 
Wallace, who contended that the insect-population had been chiefly 
influenced by atmospheric phenomena, such as storms and hurricanes. He 
remarked, in support of his opinion, that storms were of very rare occurrence 
in that part of the Atlantic, the wind blowing as a moderate breeze almost 
