iv 
and the Graphipterus is very slight in the cabinet, yet they 
could not be distinguished when they sped through the low 
herbage under the glaring sun. 
Dr. C. J. Ganan remarked upon the great interest of the 
discovery of stridulatory organs in the female of Henucha, 
and the fact that they were not present in the male. The 
only other instance known to him in which these organs 
appeared to be confined to the female sex was that of Phonapate 
—a genus of beetles of the family Bostrichidae. In reference 
to Graphipterus variegatus Klug, he said that although stridu- 
lation in that species had been made known by Lefebvre in 
1832, and referred to by Lacordaire in his ‘* Genera des Coleo- 
ptéres,”’ their observations had escaped his notice until after 
the publication of his paper on the Stridulating Organs of 
Coleoptera, in the Society’s Transactions for 1900. He had 
also overlooked an interesting paper by Dr. K. Escherich on 
the Anatomy and Biology of Paussus turcicus Friv. (Zool. 
Jahrb. 1898), in which stridulatory organs present in that 
species are described and figured. Quite recently, when 
investigating the characters of some types of Paussidae, he 
had independently noticed the existence of stridulatory 
organs in the genus Paussus, and found them present In every 
species of that genus which he had examined, as well as in 
the allied genus Hylotorus Dalm. In both of these genera, 
there is on each side of the base of the abdomen.an areuate 
series of short, sharp ridges, while near the apex of each hind 
femur, on the dorsal side, is a small file-like area, which is 
scraped by the ridges on the abdomen when the leg is rotated, 
In the two known species of the Paussid genus, Platyrho- 
palopsis Desneux, he found stridulatory organs also present, 
but there the file consists of a series of fine, closely-placed, 
and somewhat radiating striae on each side of the metasternum, 
and the scraping of the file is effected by one or two small 
teeth or tubercles set on a protuberance near the base of the 
femur of the middle leg. A third species had been added to 
the genus by Canon Fowler; but this species was without 
stridulatory organs, and he was, therefore, not surprised to 
learn from Father Wasmann that, on quite other grounds, 
Fowler’s species had already been removed from the genus 
