@)- xvi) 
them Mr. SHarp said that micromorphism was a not unusual 
phenomenon among Coleoptera and other orders; that it 
appeared to be due, neither to heredity, nor reversion, but to 
defective larval nutrition. Evidence of this was supplied by 
the fact that such micromorphic forms are most common in 
those groups whose larval food is specialised and liable to 
sudden diminution or termination. While the interest of the 
ease lies in the apparent capability of these organisms to 
respond to such a deficient supply of nutrition as in other 
animals would result in starvation or atrophy, by a completion 
of the normal outogeny perfected to the last specific character 
in miniature, and that this appears to be a special adaptation 
to meet the contingency of variable or limited food supply. 
Mr. H. St. Jonn Donistuorre also exhibited a number 
of similarly stunted specimens in further illustration of this 
characteristic. 
Mimicry 1n Lycanips.—Mr. Hamitron H. Druce exhibited 
a case of butterflies illustrating the interesting Lycenid genus 
Mimacrea, including two groups, the one mimicking the 
Danaine, the other the Acrzine butterflies. 
Papers. 
The Rev. G. A. CrawsHay, M.A., read a paper, illus- 
trated by lantern slides, on “The Life History of Tetropiwm 
gabrieli, Weise.” 
Dr. T. A. Coapman, M.D., F.Z.S., read a paper, illustrated 
by several exhibits, on ‘‘Some Teratological Specimens.” 
The following papers were also communicated :— 
“Entomology in North-West Spain,” by T. A. CHapmay, 
M.D., F.Z.8S., and G. C. Campion, F.Z.S. 
“The Larva of Collyris emarginatus, Dej.,” by Rosrrr 
SuetrorpD, M,A., F.L.S. 
“A Preliminary Revision of the Forficwlide and Cheliso- 
chidz,’ by Matcotm Burr, B.A., F.LS. 
‘Descriptions of some new Butterflies from ‘Tropical 
Africa,” by Hamitton H. Druce, F.Z.S. 
‘‘A Catalogue of the Australian and Tasmanian Byrrhide, 
with descriptions of new Species,” by Arruur M. Lexa, F.E.S. 
PROC. ENT. SOC. LOND., 1. 1907, B 
