37 



odonio^astci' ; G. najas ; and undeveloped and developed 

 forms of Hydronietra stagnornm. 



Mr. Fred Knock exhibited bred specimens of LibcUula 

 dcpressa, of which the nymphs came from Epping ; bred 

 specimens of Libellula qnadriuiaculaia, the nymphs from 

 the Black Pond, Esher, with typical and some very fine 

 varieties ^of var. prcenuhila and others in which the nodal 

 spots were much diffused laterally, and the costal margin 

 beautifull)' clouded right to the base as well as being suffused 

 with saffron. From a large number bred he had noted that 

 the nymphs come up to the surface about g p.m. and 

 remain all night, then from 7 to 8 a.m. search out suitable 

 stems up which they climb. In this matter they are most 

 fastidious, much preferring to crawl (if possible) over the 

 edge and then risk cracking their skulls by a fall of four feet, 

 so that they could crawl up and affix themselves to some 

 rough board, or better still the edge of a drawing board. The 

 time from leaving the water to full development was four 

 hours, the " rest " period being generally twenty minutes. 



He also exhibited larva of Thecla betulce from Epping, and 

 a female }Anax imperator (alive) with right posterior wing 

 abnormally small. 



Dr. Chapman exhibited a specimen of Cordidia cenea from 

 Reigate, and also an example of Trichmra cratcegi, var. aria, 

 from the Alps. Mr. Tutt remarked that it was a form 

 parallel in its life history to Lasiocampa querctls, var. calluncB, 

 in that it passes the first winter as a young larva, and the 

 second as a pupa, from which the imago emerges the follow- 

 ing June. Its habitat is high moorland districts. 



Mr. Harrison exhibited a series of Amphidasys hdularia, 

 consisting of twenty males, forty females, and six gynandrous 

 specimens, bred from a pair taken in the New Forest in 

 igoo. The parents were also exhibited, and were quite 

 normal. Altogether seven- gynandrous specimens were bred ; 

 the wings and antennae of four were male on the right side, 

 the remaining being male on the left side. The larvae were 

 started indoors, and then sleeved on birch till full-grown. 



JULY nth, 1901. 



Mr. W. J. Lucas, B.A., F.E.S., Vice-President, in the Chair. 



Mr. Kemp exhibited a short series of the Coleopteron 

 DytisciLs pnnctidatits, caught by Mr. F. Enock at Wisley. 

 He also exhibited the Odonata, Brachytron pratense, Calopteryx 



