PROCEEDINGS OF SCIENTIFIC SOCIETIES. 467 
Mr. M‘Lachlan also exhibited examples of the larye of one of the 
Embide, found by Mr. Wood-Mason at Jubbulpore on his return to 
Calcutta, crawling on the ground in the open, and also occurring under 
loose bricks; the latter habit being quite in accordance with that most 
generally attributed to the family, although one species (Oligetoma Michaeli, 
M‘Lach.) had been found in a hot-house near London, in all its stages, and 
apparently injuring orchids. The species sent by Mr. Wood-Mason was 
probably Oligotoma Saundersi, Westwood. 
Mr. M‘Lachlan further called attention to the sculptured stones on the 
shores of Lake Léman, alluded to at two previous meetings, and which 
it had been suggested by Prof. Forel might be merely due to the action 
of trichopterous larve, apparently those of Tinodes weneri (larida, Curtis). 
Mr. M‘Lachlan had recently examined multitudes of these stones on the 
shores of Lake Neuchatel, and under peculiarly favourable conditions, 
because recent engineering works had lowered the level of the Lake, and 
exposed many interesting phenomena. ‘The stones, which (as in those of 
Lake Léman) were limestone, were very strongly sculptured, but in differing 
degrees, so as to lead one to suppose that all might not have been acted 
upon by the same agents, or that differences in the texture of the stone 
oceasioned variety in the sculpturing. He was doubtful as to the ability 
of any trichopterous larvz to occasion the sculpturing, and thought it more 
probable the result of the work of Mollusca, but there still remained much 
uncertainty as to its exact nature. 
Mr. Waterhouse, with reference to injury done to hops, stated that he 
had recently inspected a hop garden in Sussex, in which great mischief 
had been done by a species of Homopteron (Huacanthus interruptus), 
probably assisted by an Hemipteron (Lygus). These punctured the leaves 
in which holes were afterwards formed, so that the surface was destroyed, 
and the supply of nourishment to the plants thus prevented. He was of 
opinion that. Huacanthus 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 Acridiida, 
remarkable for its aquatic habits. It was seen in some numbers hopping 
about on the surface of a pool near Para. 
The Rev, A. K. Eaton exhibited larve, pups, and cases of Hydroptila 
(restricted) collected near Val d'Illiéry, Vallais, and Sixt, Haute Savoie. 
Sir John Lubbock exhibited a specimen of Orchesella rufescens, taken 
im, Kent, being a species of Colembola 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 Salia viminalis (osier) and S. triandra (French. willow). 
~ Mr. Wood-Mason communicated a note “ On the Specimens of Narycius 
(Cyphonocephalus) smaragdalus, figured on Pl. L., fig. 3 (male), fig. 4 (female), 
of Trans. Ent. Soc. 1878.” 
