1895.] ,75 



Hydroporus marginatux, Duft. — Supplementing my note in the Ent. Mo. Mag. 

 for May, it may be of interest to record that on Whit Monday in two hours I 

 collected upwards of thirty specimens of Hydroporus marginatus at Kamsbury, and 

 had not darkness set in ralher earlier than usual I could, no doubt, have taken many 

 more. As far as my experience goes, they frequent the very small carriers in the 

 water meadows, and only once have I taken them in flood refuse in numbers in the 

 main river. On May 2oth last I captured at Mickkham sixteen specimens of 

 Molorchus minor in the old locality. The insect was plentiful, and I could see it 

 upon the flowers in many cases quite out of reach. — R. Wylie Lloyd, St. Cuthbert's, 

 Thurleigh Road, Nightingale Lane, S.W. : June, 1895. 



Entomological Society of London: June 5(h, 1895. — Lord Walsingham, 

 F.R.S., Vice-President, in the Chair. 



Dr. Sharp exhibited, on behalf of Dr. Q-. D. Haviland, two species of 

 Calotermes from Borneo, the individuals being alive and apparently in good health ; 

 one of the two small communities (which were contained in glass tubes) consisted 

 of a few individuals of the inmature sexual forms and of a neoteinic queen: this 

 latter had increased somewhat in size during the eight months it had been in Dr. 

 Haviland's possession, but no eggs had been deposited, neither had any of the 

 inmature individuals developed into winged forms. The second community 

 exhibited consisted entirely of the inmature sexual forms, and this community had 

 produced numerous winged adults while it had been in Dr. Haviland's possession. 

 Specimens were also exhibited to illustrate the neoteinic forms that were produced 

 in Borneo after a community had been artificially orphaned. As regards these, 

 Dr. Sharp expressed the hope that Dr. Havihmd would shortly publish the very 

 valuable observations he had made. In the case of a species of fungus Termite, 

 Dr. Haviland had found that the community had replaced a king and queen by 

 normal, not by neoteinic forms. Professor Riley remarked that in many cases it 

 would be extremely difficult to artificially orphan a nest without destroying it ; he 

 also commented on the short time in which the queen ujipeared to have been 

 developed, and on the apparently rapid development of the wing pads, which 

 usually cannot take place except after several moults ; and he expressed his opinion 

 that further information on these points was much to be desired: he corroborated 

 the observation of Dr. Haviland with regard to the great variability in the nests of 

 different years (or even of the same year) of the number of queens, true or 

 neoteinic ; in one nest of Eutennes morio, he found one-fourth of the inhabibants to 

 be true kings and queens, although not fully developed. Mr. McLaehlan exhibited 

 examples of the female of Ptfrrhosoma minium, Harris, having the abdomen 

 incrusted with whitish mud through ovipositing in a ditch in which the water was 

 nearly all dried up. He had noticed the same thing in other species of Agrionidce. 

 Herr Jacoby exhibited four varieties of Smerinthus tilits. Mr. Enock exhibited 

 specimens of the thistle-gall fly, Trgpeta cardui, and also of Caraphractus cinctun, 

 Haliday (== Polynema nutans, Lubbock) : with regard to the latter insect, he said 

 that he had observed copulation to take place below ihe surface of the water; a 



