xliv 



and the supply of nourishment to the plants thus prevented. He was of 

 opinion that Euacanthus was likely to have been the cause of the damage 

 complained of by Mr. M'Lachlan's correspondent. 



Mr. Pascoe exhibited an apparently new genus and species of AcridiidcB, 

 remarkable for its aquatic habits. It was seen in some numbers hopping 

 about on the surface of a pool near Para. 



The Kev. A. E. Eaton exhibited larvae, pupse, and cases of Hydroptila 

 (restricted) collected near Val d'llliery, Vallais, and Sixt, Haute Savoie. 

 The larvae at first roam at large, caseless ; when they become corpulent 

 they construct oval-cylindrical cases of fine mud. They abound on rocks 

 suffused with an extremely thin film of water resulting from the spray and 

 dribbling of trickling streamlets, especially in places exposed to the sun. 

 Mr. Eaton had found other undescribed species on the Rhine, in the Cantal 

 and in the Pyrenees. The only named species was described by Schneider 

 from Messina in ' Stet. Ent. Zeit.' (vi., p. 346, 1845), and was referred 

 with a query to Phrixocoma by Eaton in ' Trans. Ent. Soc.,' 1873 (p. 137, 

 pi. ii., fig. 2), under the supposition of its having 0.2.4 spines; but it is 

 actually a normal Hydroptila with 1.3.4 spines. 



Sir John Lubbock exhibited a specimen of Orchesella rufescens, taken 

 in Kent, being a species of Collemhula new to Britain. 



Mr. E. Boscher exhibited a coloured drawing showing the extreme forms 

 of two varieties of the caterpillar of Smerinthus ocellatus, found feeding 

 respectively on Salix viminalis (osier) and 8. triandra (French willow). 

 When the subject of the coloration of caterpillars was brought before the 

 Society last year (Proc. Ent. Soc, 1878, pp. iv — vii), several cases of 

 dimorphic Sphinx larvae had been mentioned ; but, so far as he was aware, 

 the present variety of S. ocellatus had not been recorded. The larvae 

 feeding on S. viminalis were remarkable on account of their possessing a 

 double row of brown spots along the side, and were most conspicuous on 

 account of their bright green colour against the dark foliage of the osier, 

 whilst those feeding on S. triandra were rather difficult to find, as they 

 assimilated in colour to the leaves of that plant. 



Mr. Wood-Mason communicated the following note: — 



" The specimens of Narycius [Cyp)honocephalus) smaragdulus, figured on 

 pi. i., fig. 3 ^, fig. 4 ?, of 'Trans. Ent. Soc.,' 1878, were obtained by 

 Mr. W. Davison at Vythrey, Wynaad, Southern India. A specimen of the 

 male has been received during my absence from Col. R. C. Beddome, who 

 obtained it on the slopes of the Nilgiris, Ootacamund." 



Papers read, dc. 

 Mr. J. S. Baly communicated a paper containing " Descriptions of 

 Phytophagous Coleoptera belonging to the Families ChrysontelidcB and 

 Galerucida:, from Peru-" 



