( H ) 



part of the prothorax, the lips of which channel are nearly 

 apposed, so that the channel communicates with the exterior 

 merely by a narrow slit, and constitutes a nearly cylindrical 

 chamber; this chamber is occupied by Acari ; (iii) two Bren- 

 thidae with deeply sulcated prothorax, in which Acari occur ; 

 the sulci in these two species not being " roofed in " as in 

 the preceding species : and (iv) an Anthribid beetle with a 

 crescentic sulcus on the prothorax. 



Mr. C. J. Gahan, on behalf of Mr. C. O. Waterhouse, 

 exhibited a living example of 1'haneroptera quadripunctata, 

 which species had been found in some numbers in a vinery 

 near Chester. It is a Southern European species, and is not 

 known as British. But a single specimen of an allied species 

 Phaneroptera falcata was once taken near Land's End by 

 Dr. Mason. 



Mr. W. J. Kaye brought for exhibition a long variable 

 series of Heliconius numata from the Potaro River, British 

 Guiana. These included a very large number of different 

 forms, from some with a narrow black bar across the hind- 

 wing, to others with almost the whole of the wing of a deep 

 black. The series clearly proved that these very variable 

 forms were only aberrations, and were not sub-species, at least 

 in this locality, as had been described by Riffarth, Weymer 

 and others. 



A pair of Heliconius silvana were also shown with two 

 rare aberrations, showing the black area of the hind-wing 

 divided ; and examples of Heliconius vetustus, it being 

 remarkable that although similar to numata it was neverthe- 

 less a distinct species. 



Mr. A. H. Jones exhibited a collection of Lepidoptera made 

 by him in Majorca during the first half of last June, and 

 remarked upon the almost total absence of Lepidopterous life 

 in the island. Only thirteen species of butterflies were 

 observed, all of the commonest kinds and without any indica- 

 tion of variation, with about six species of moths (all occurring 

 in Britain), including Agrotis saucia, Acidalia ochrata, and 

 A. degeneraria, the latter, interesting in point of colour, 

 being much redder. He also exhibited Melanargia lachesis, var. 

 canigidensis, from Vernet-les-Bains, showing on the under- 



