erg, -) 
CONTENTS. 
Sees 
PAGE 
Explanation of the Plates se do se Bic a Se. yan 
List of Fellows .. Sc ar ac a6 AC ys wade 
Additions to the isecanyi = =. ee ve vs ae ep 
MEMOIRS. 
I. A revision of the genus Ypthima, with especial reference 
to the characters afforded by the male genitalia. By 
Heyry J. Enwes, F.L.S., F.Z.S., President of the Ento- 
mological Society, and JAMES Epwarps, ID Sel de : 1 
II. The effects of temperature in the pupal stage on the 
colouring of Pieris napi, Vanessa atalanta, Chrysophanus 
phleas, and Eph ae ean By Freperic MERRIFIELD, 
F.E.S. 55 
III. On the pavlauenenic seneonitiat of ihe Bor heee piedueed 
by differences of temperature in Vanessa atalanta. An 
Appendix to the preceding paper. By Dr. FReprricx 
AUGUSTUS ae M.A., M.D., Fellow of Wadham Genes 
@xiford.\ ..: 69 
IV. Notes on Hydr optilide ‘belonging to ‘the Rarqneate fatins, 
with descriptions of new eae By KENNETH J. eae 
JA LIDUS Be Re ato 
V. Descriptions of new genera wand species of Nesiepital hyn. 
chota. By Witttam L. Distant, F.H.8.  .. ae 83 
VI. On some neglected points in the structure of the pupe of 
Heterocerous Lepidoptera, and their probable value in 
classification ; with some associated observations on larval 
prolegs. By Dr. THomas AncERNOoN CHapman, M.D., F.H.S. 97 
VII. Description of a new butterfly of the genus Calinaga from 
Siam. By James Cosmo Menvint, M.A.,F.L.8. .. op lal 
VIII. On some new or imperfectly-known species of South African 
butterflies. By Ronanp Tren, F.R.S., F.L.S., &. ae 123 
IX. Descriptions of some new genera and new species of Halti- 
cide. By Martin Jacosy, F.H.S.  .. sc : 145 
X. Two new species of Pulvinaria from Jamaica. By Tidbpote 
D. A. CockERELL, F.Z.S. ae : . 159 
XI. Notes on the Longicornia of Australia Se ‘Taanininia, Bart a 
with a list of the species collected by Mr. J. J. Walker, 
B.N., F.L.8., and CS am of new forms. By CuHaruEs 
J. Ganan, M.A., F.E.S. A eel Ga, 
XII. On stridulation in ants. By Dr. ne foyuai) M. ie ¥, R.S. 199 
XIII. Descriptions of new species of Chilian +a zo 
WIbi1aM BartiettT Canvert, F.E.S. .. 215 
XIV. On a new species of the genus Phalacr a Mahony. 
By Joun W. Suipp, of the Oxford University Museum. 
Communicated by Dr. D. Suarp, M.A., F.R.S. E 223 
XY. On species of Chrysopa observed in fhe Eastern Eonencee 
together with descriptions of, and notes on, new or little- 
known Palearctic forms of the Sonus By Roserrr 
McLacutan, F.R.§., &e. os ; es a ae OH 
